[PATCH 4/4] [libc/musl] Add musl-libc support
Bryan Hundven
bryanhundven@gmail.com
Fri Aug 8 21:28:00 GMT 2014
Yann, list,
On Fri, Aug 8, 2014 at 2:21 PM, Yann E. MORIN <yann.morin.1998@free.fr> wrote:
> Bryan, All,
>
> On 2014-07-31 19:01 -0700, Bryan Hundven spake thusly:
>> This patch adds initial support for musl-libc.
>
> Applied, with those changes discussed on IRC:
> - gcc musl patch has issues, so removed; we can add it back later,
> - do_get_arch() is dead code for now, dropped.
Perfect! (as discussed on irc)
Hopefully soon the musl gcc stuff will go upstream:
http://www.openwall.com/lists/musl/2014/08/05/10
do_get_arch will be back in a future patch, after 2-pass gcc support.
> Thank you! :-)
Cheers,
> Regards,
> Yann E. MORIN.
-Bryan
>> Musl-libc versions currently supported:
>> * 1.0.3 (Stable)
>> * 1.1.3 (Previous Mainline)
>> * 1.1.4 (Mainline)
>>
>> Futher improvements are needed.
>> * gcc-4.9.x has issues (Might be fixed in musl-1.1.4).
>> * Multilib support is needed.
>> * Checks to make sure paths are correct.
>> * Move to 2-step gcc build. 3-step build is not necessary.
>>
>> Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
>> ---
>> config/libc/musl.in | 49 ++
>> patches/experimental/gcc/4.6.0/0001-musl.patch | 304 +++++++++
>> patches/experimental/gcc/4.8.0/0001-musl.patch | 401 +++++++++++
>> patches/experimental/gcc/4.8.1/0001-musl.patch | 626 +++++++++++++++++
>> patches/experimental/gcc/4.8.2/0001-musl.patch | 750 +++++++++++++++++++++
>> patches/experimental/gcc/4.8.3/0001-musl.patch | 736 ++++++++++++++++++++
>> patches/experimental/gcc/4.9.0/0001-musl.patch | 706 +++++++++++++++++++
>> .../musl/1.0.3/0001-fix_linker_regression.patch | 64 ++
>> .../1.0.3/0002-fix_mips_linker_regression.patch | 88 +++
>> .../musl/1.1.3/0001-fix_linker_regression.patch | 64 ++
>> .../1.1.3/0002-fix_mips_linker_regression.patch | 88 +++
>> scripts/build/arch/arm.sh | 1 +
>> scripts/build/libc/musl.sh | 128 ++++
>> scripts/functions | 1 +
>> 14 files changed, 4006 insertions(+)
>> create mode 100644 config/libc/musl.in
>> create mode 100644 patches/experimental/gcc/4.6.0/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.8.0/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.8.1/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.8.2/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.8.3/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.9.0/0001-musl.patch
>> create mode 100644 patches/musl/1.0.3/0001-fix_linker_regression.patch
>> create mode 100644 patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
>> create mode 100644 patches/musl/1.1.3/0001-fix_linker_regression.patch
>> create mode 100644 patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
>> create mode 100644 scripts/build/libc/musl.sh
>>
>> diff --git a/config/libc/musl.in b/config/libc/musl.in
>> new file mode 100644
>> index 0000000..7bab480
>> --- /dev/null
>> +++ b/config/libc/musl.in
>> @@ -0,0 +1,49 @@
>> +# musl options
>> +
>> +## depends on ! WINDOWS && ! BARE_METAL
>> +##
>> +## select LIBC_SUPPORT_THREADS_NATIVE
>> +## select CC_CORE_PASSES_NEEDED
>> +##
>> +## help Musl is a new standard library to power a new generation of Linux-based
>> +## help devices. musl is lightweight, fast, simple, free, and strives to be
>> +## help correct in the sense of standards-conformance and safety.
>> +
>> +config THREADS
>> + default "musl"
>> +
>> +choice
>> + bool
>> + prompt "musl version"
>> +# Don't remove next line
>> +# CT_INSERT_VERSION_BELOW
>> +
>> +config LIBC_MUSL_V_1_1_4
>> + bool
>> + prompt "1.1.4 (Mainline)"
>> + depends on EXPERIMENTAL
>> +
>> +config LIBC_MUSL_V_1_1_3
>> + bool
>> + prompt "1.1.3"
>> + depends on EXPERIMENTAL
>> +
>> +config LIBC_MUSL_V_1_0_3
>> + bool
>> + prompt "1.0.3 (Stable)"
>> +
>> +config LIBC_MUSL_V_CUSTOM
>> + bool
>> + prompt "Custom musl"
>> + depends on EXPERIMENTAL
>> +
>> +endchoice
>> +
>> +config LIBC_VERSION
>> + string
>> +# Don't remove next line
>> +# CT_INSERT_VERSION_STRING_BELOW
>> + default "1.1.4" if LIBC_MUSL_V_1_1_4
>> + default "1.1.3" if LIBC_MUSL_V_1_1_3
>> + default "1.0.3" if LIBC_MUSL_V_1_0_3
>> + default "custom" if LIBC_MUSL_V_CUSTOM
>> diff --git a/patches/experimental/gcc/4.6.0/0001-musl.patch b/patches/experimental/gcc/4.6.0/0001-musl.patch
>> new file mode 100644
>> index 0000000..b0b6c4b
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.6.0/0001-musl.patch
>> @@ -0,0 +1,304 @@
>> +diff --git a/patches/experimental/gcc/4.6.0/0001-musl.patch b/patches/experimental/gcc/4.6.0/0001-musl.patch
>> +new file mode 100644
>> +index 0000000..cee9948
>> +--- /dev/null
>> ++++ b/patches/experimental/gcc/4.6.0/0001-musl.patch
>> +@@ -0,0 +1,231 @@
>> ++diff --git a/config.sub b/config.sub
>> ++--- a/config.sub
>> +++++ b/config.sub
>> ++@@ -125,6 +125,7 @@ esac
>> ++ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
>> ++ case $maybe_os in
>> ++ nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
>> +++ linux-musl* | \
>> ++ linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
>> ++ knetbsd*-gnu* | netbsd*-gnu* | \
>> ++ kopensolaris*-gnu* | \
>> ++@@ -1310,6 +1311,7 @@ case $os in
>> ++ | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
>> ++ | -mingw32* | -linux-gnu* | -linux-android* \
>> ++ | -linux-newlib* | -linux-uclibc* \
>> +++ | -linux-musl* \
>> ++ | -uxpv* | -beos* | -mpeix* | -udk* \
>> ++ | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
>> ++ | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
>> ++diff --git a/gcc/config.gcc b/gcc/config.gcc
>> ++--- a/gcc/config.gcc
>> +++++ b/gcc/config.gcc
>> ++@@ -478,7 +478,7 @@ case ${target} in
>> ++ esac
>> ++
>> ++ # Common C libraries.
>> ++-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> +++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> ++
>> ++ # Common parts for widely ported systems.
>> ++ case ${target} in
>> ++@@ -591,6 +591,9 @@ case ${target} in
>> ++ *-*-*uclibc*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> ++ ;;
>> +++ *-*-*musl*)
>> +++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> +++ ;;
>> ++ *)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> ++ ;;
>> ++diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
>> ++--- a/gcc/config/arm/linux-eabi.h
>> +++++ b/gcc/config/arm/linux-eabi.h
>> ++@@ -64,6 +64,10 @@
>> ++ #undef GLIBC_DYNAMIC_LINKER
>> ++ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
>> ++
>> +++/* musl has no "classic" (i.e. broken) mode */
>> +++#undef MUSL_DYNAMIC_LINKER
>> +++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.so.1"
>> +++
>> ++ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> ++ use the GNU/Linux version, not the generic BPABI version. */
>> ++ #undef LINK_SPEC
>> ++diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h
>> ++--- a/gcc/config/i386/linux.h
>> +++++ b/gcc/config/i386/linux.h
>> ++@@ -93,6 +93,7 @@ along with GCC; see the file COPYING3. If not see
>> ++ /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
>> ++ #define LINK_EMULATION "elf_i386"
>> ++ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> +++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> ++
>> ++ #undef ASM_SPEC
>> ++ #define ASM_SPEC \
>> ++diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
>> ++--- a/gcc/config/i386/linux64.h
>> +++++ b/gcc/config/i386/linux64.h
>> ++@@ -65,6 +65,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
>> ++ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> ++ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> ++
>> +++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> +++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> +++
>> ++ #if TARGET_64BIT_DEFAULT
>> ++ #define SPEC_32 "m32"
>> ++ #define SPEC_64 "!m32"
>> ++diff --git a/gcc/config/linux.h b/gcc/config/linux.h
>> ++--- a/gcc/config/linux.h
>> +++++ b/gcc/config/linux.h
>> ++@@ -33,10 +33,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
>> ++ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> ++ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> ++ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> +++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> ++ #else
>> ++ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> ++ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> ++ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> +++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> ++ #endif
>> ++
>> ++ #define LINUX_TARGET_OS_CPP_BUILTINS() \
>> ++@@ -54,18 +56,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
>> ++ uClibc or Bionic is the default C library and whether
>> ++ -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> ++
>> ++-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> ++- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> +++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> +++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> ++
>> ++ #if DEFAULT_LIBC == LIBC_GLIBC
>> ++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> ++- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> +++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> ++ #elif DEFAULT_LIBC == LIBC_UCLIBC
>> ++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> ++- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> +++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> ++ #elif DEFAULT_LIBC == LIBC_BIONIC
>> ++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> ++- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> +++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> +++#elif DEFAULT_LIBC == LIBC_MUSL
>> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> +++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> ++ #else
>> ++ #error "Unsupported DEFAULT_LIBC"
>> ++ #endif /* DEFAULT_LIBC */
>> ++@@ -83,13 +88,13 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
>> ++
>> ++ #define LINUX_DYNAMIC_LINKER \
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> ++- BIONIC_DYNAMIC_LINKER)
>> +++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> ++ #define LINUX_DYNAMIC_LINKER32 \
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> ++- BIONIC_DYNAMIC_LINKER32)
>> +++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> ++ #define LINUX_DYNAMIC_LINKER64 \
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> ++- BIONIC_DYNAMIC_LINKER64)
>> +++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> ++
>> ++ /* Determine whether the entire c99 runtime
>> ++ is present in the runtime library. */
>> ++diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
>> ++--- a/gcc/config/linux.opt
>> +++++ b/gcc/config/linux.opt
>> ++@@ -30,3 +30,7 @@ Use GNU C library
>> ++ muclibc
>> ++ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> ++ Use uClibc C library
>> +++
>> +++mmusl
>> +++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> +++Use musl C library
>> ++diff --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
>> ++--- a/gcc/config/mips/linux.h
>> +++++ b/gcc/config/mips/linux.h
>> ++@@ -63,6 +63,8 @@ along with GCC; see the file COPYING3. If not see
>> ++
>> ++ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> +++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
>> +++
>> ++ /* Borrowed from sparc/linux.h */
>> ++ #undef LINK_SPEC
>> ++ #define LINK_SPEC \
>> ++diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
>> ++--- a/gcc/ginclude/stddef.h
>> +++++ b/gcc/ginclude/stddef.h
>> ++@@ -184,6 +184,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
>> ++ #ifndef _GCC_SIZE_T
>> ++ #ifndef _SIZET_
>> ++ #ifndef __size_t
>> +++#ifndef __DEFINED_size_t /* musl */
>> ++ #define __size_t__ /* BeOS */
>> ++ #define __SIZE_T__ /* Cray Unicos/Mk */
>> ++ #define _SIZE_T
>> ++@@ -200,6 +201,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
>> ++ #define ___int_size_t_h
>> ++ #define _GCC_SIZE_T
>> ++ #define _SIZET_
>> +++#define __DEFINED_size_t /* musl */
>> ++ #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
>> ++ /* __size_t is a typedef on FreeBSD 5!, must not trash it. */
>> ++ #else
>> ++@@ -214,6 +216,7 @@ typedef __SIZE_TYPE__ size_t;
>> ++ typedef long ssize_t;
>> ++ #endif /* __BEOS__ */
>> ++ #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> +++#endif /* __DEFINED_size_t */
>> ++ #endif /* __size_t */
>> ++ #endif /* _SIZET_ */
>> ++ #endif /* _GCC_SIZE_T */
>> ++diff --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
>> ++--- a/libgomp/config/posix/time.c
>> +++++ b/libgomp/config/posix/time.c
>> ++@@ -28,6 +28,8 @@
>> ++ The following implementation uses the most simple POSIX routines.
>> ++ If present, POSIX 4 clocks should be used instead. */
>> ++
>> +++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> +++
>> ++ #include "libgomp.h"
>> ++ #include <unistd.h>
>> ++ #if TIME_WITH_SYS_TIME
>> ++diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
>> ++--- a/libstdc++-v3/configure.host
>> +++++ b/libstdc++-v3/configure.host
>> ++@@ -237,6 +237,13 @@ case "${host_os}" in
>> ++ os_include_dir="os/bsd/freebsd"
>> ++ ;;
>> ++ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> +++ # check for musl by target
>> +++ case "${host_os}" in
>> +++ *-musl*)
>> +++ os_include_dir="os/generic"
>> +++ ;;
>> +++ *)
>> +++
>> ++ if [ "$uclibc" = "yes" ]; then
>> ++ os_include_dir="os/uclibc"
>> ++ elif [ "$bionic" = "yes" ]; then
>> ++@@ -245,6 +252,9 @@ case "${host_os}" in
>> ++ os_include_dir="os/gnu-linux"
>> ++ fi
>> ++ ;;
>> +++
>> +++ esac
>> +++ ;;
>> ++ hpux*)
>> ++ os_include_dir="os/hpux"
>> ++ ;;
>> +diff --git a/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch b/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch
>> +new file mode 100644
>> +index 0000000..e28232d
>> +--- /dev/null
>> ++++ b/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch
>> +@@ -0,0 +1,12 @@
>> ++--- musl-1.1.3.orig/include/signal.h 2014-07-27 20:24:56.194773074 +0300
>> +++++ musl-1.1.3/include/signal.h 2014-07-27 21:27:32.108772419 +0300
>> ++@@ -246,6 +246,9 @@ typedef int sig_atomic_t;
>> ++ void (*signal(int, void (*)(int)))(int);
>> ++ int raise(int);
>> ++
>> +++#define __SIGRTMIN 32
>> +++#define __SIGRTMAX (_NSIG - 1)
>> +++
>> ++ #ifdef __cplusplus
>> ++ }
>> ++ #endif
>> +diff --git a/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch b/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch
>> +new file mode 100644
>> +index 0000000..a166cb5
>> +--- /dev/null
>> ++++ b/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch
>> +@@ -0,0 +1,43 @@
>> ++diff -Nupr musl-1.1.3.orig/include/ctype.h musl-1.1.3/include/ctype.h
>> ++--- musl-1.1.3.orig/include/ctype.h 2014-07-30 10:06:03.630712195 +0300
>> +++++ musl-1.1.3/include/ctype.h 2014-07-30 10:06:51.238713586 +0300
>> ++@@ -7,6 +7,39 @@ extern "C" {
>> ++
>> ++ #include <features.h>
>> ++
>> +++#ifndef _ISbit
>> +++/* These are all the characteristics of characters.
>> +++ If there get to be more than 16 distinct characteristics,
>> +++ many things must be changed that use `unsigned short int's.
>> +++
>> +++ The characteristics are stored always in network byte order (big
>> +++ endian). We define the bit value interpretations here dependent on the
>> +++ machine's byte order. */
>> +++
>> +++# include <endian.h>
>> +++# if __BYTE_ORDER == __BIG_ENDIAN
>> +++# define _ISbit(bit) (1 << (bit))
>> +++# else /* __BYTE_ORDER == __LITTLE_ENDIAN */
>> +++# define _ISbit(bit) ((bit) < 8 ? ((1 << (bit)) << 8) : ((1 << (bit)) >> 8))
>> +++# endif
>> +++
>> +++enum
>> +++{
>> +++ _ISupper = _ISbit (0), /* UPPERCASE. */
>> +++ _ISlower = _ISbit (1), /* lowercase. */
>> +++ _ISalpha = _ISbit (2), /* Alphabetic. */
>> +++ _ISdigit = _ISbit (3), /* Numeric. */
>> +++ _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
>> +++ _ISspace = _ISbit (5), /* Whitespace. */
>> +++ _ISprint = _ISbit (6), /* Printing. */
>> +++ _ISgraph = _ISbit (7), /* Graphical. */
>> +++ _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
>> +++ _IScntrl = _ISbit (9), /* Control character. */
>> +++ _ISpunct = _ISbit (10), /* Punctuation. */
>> +++ _ISalnum = _ISbit (11) /* Alphanumeric. */
>> +++};
>> +++#endif /* ! _ISbit */
>> +++
>> ++ int isalnum(int);
>> ++ int isalpha(int);
>> ++ int isblank(int);
>> diff --git a/patches/experimental/gcc/4.8.0/0001-musl.patch b/patches/experimental/gcc/4.8.0/0001-musl.patch
>> new file mode 100644
>> index 0000000..e250298
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.8.0/0001-musl.patch
>> @@ -0,0 +1,401 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.0-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r 6b1b8174ce29 gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Fri Mar 29 16:41:20 2013 -0400
>> ++++ b/gcc/config/arm/linux-eabi.h Fri Mar 29 16:41:23 2013 -0400
>> +@@ -77,6 +77,10 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* musl has no "classic" (i.e. broken) mode */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r 6b1b8174ce29 libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Fri Mar 29 16:41:20 2013 -0400
>> ++++ b/libitm/config/arm/hwcap.cc Fri Mar 29 16:41:23 2013 -0400
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent 2b29df135cf04fe23c38301f6d0fc5796366aecf
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r 2b29df135cf0 gcc/config.gcc
>> +--- a/gcc/config.gcc Fri Mar 29 16:41:11 2013 -0400
>> ++++ b/gcc/config.gcc Fri Mar 29 16:41:14 2013 -0400
>> +@@ -549,7 +549,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # Common parts for widely ported systems.
>> + case ${target} in
>> +@@ -652,6 +652,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r 2b29df135cf0 gcc/config/linux.h
>> +--- a/gcc/config/linux.h Fri Mar 29 16:41:11 2013 -0400
>> ++++ b/gcc/config/linux.h Fri Mar 29 16:41:14 2013 -0400
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,16 +89,16 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Determine whether the entire c99 runtime
>> + is present in the runtime library. */
>> +diff -r 2b29df135cf0 gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Fri Mar 29 16:41:11 2013 -0400
>> ++++ b/gcc/config/linux.opt Fri Mar 29 16:41:14 2013 -0400
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r 2b29df135cf0 gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Fri Mar 29 16:41:11 2013 -0400
>> ++++ b/gcc/ginclude/stddef.h Fri Mar 29 16:41:14 2013 -0400
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent 2b94537ce2496c88e7e797c617e5b95e8d7e4785
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r 2b94537ce249 libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Fri Mar 29 16:41:14 2013 -0400
>> ++++ b/libgomp/config/posix/time.c Fri Mar 29 16:41:17 2013 -0400
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +# HG changeset patch
>> +# Parent f50bb54f331f73405131a30b4f353cfda1c70304
>> +Use the generic implementation of libstdc++ primitives when we're on musl, not the glibc one.
>> +
>> +diff -r f50bb54f331f libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Fri Mar 29 16:38:52 2013 -0400
>> ++++ b/libstdc++-v3/configure.host Fri Mar 29 16:41:10 2013 -0400
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent 62831d7bf931658019ba16092c48375177d014b1
>> +Support for mips-linux-musl.
>> +
>> +diff -r 62831d7bf931 gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Fri Mar 29 16:41:23 2013 -0400
>> ++++ b/gcc/config/mips/linux.h Fri Mar 29 16:41:25 2013 -0400
>> +@@ -18,3 +18,5 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
>> +# HG changeset patch
>> +# Parent 2ffe76b215fdb082cbbc262536077627757fa9bf
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 2ffe76b215fd gcc/config.gcc
>> +--- a/gcc/config.gcc Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config.gcc Fri Mar 29 16:41:28 2013 -0400
>> +@@ -2112,6 +2112,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 2ffe76b215fd gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -364,17 +364,21 @@
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> +
>> + #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
>> +diff -r 2ffe76b215fd gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -551,6 +551,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler and set correct endian mode. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu) \
>> +@@ -611,7 +614,8 @@
>> + %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
>> + %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
>> + %{mcall-i960-old: --oformat elf32-powerpcle} \
>> +- }}}}"
>> ++ }}}} \
>> ++%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -789,15 +793,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -923,6 +930,7 @@
>> + { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
>> + { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +diff -r 2ffe76b215fd libgcc/config/rs6000/linux-unwind.h
>> +--- a/libgcc/config/rs6000/linux-unwind.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/libgcc/config/rs6000/linux-unwind.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -258,6 +258,7 @@
>> +
>> + return _URC_NO_REASON;
>> + }
>> ++#endif
>> +
>> + #define MD_FROB_UPDATE_CONTEXT frob_update_context
>> +
>> +# HG changeset patch
>> +# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r 3ea10cd626cb gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/gcc/config/i386/linux.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r 3ea10cd626cb gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/gcc/config/i386/linux64.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> diff --git a/patches/experimental/gcc/4.8.1/0001-musl.patch b/patches/experimental/gcc/4.8.1/0001-musl.patch
>> new file mode 100644
>> index 0000000..2c1c0d3
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.8.1/0001-musl.patch
>> @@ -0,0 +1,626 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.1-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r f50bb54f331f libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Fri Mar 29 16:38:52 2013 -0400
>> ++++ b/libstdc++-v3/configure.host Fri Mar 29 16:41:10 2013 -0400
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent 572f7b4d1c50cefde3aa2c43d06040fc308ad989
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r 572f7b4d1c50 gcc/config.gcc
>> +--- a/gcc/config.gcc Sun Sep 08 22:58:18 2013 -0400
>> ++++ b/gcc/config.gcc Mon Sep 09 12:48:34 2013 -0400
>> +@@ -549,7 +549,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # Common parts for widely ported systems.
>> + case ${target} in
>> +@@ -652,6 +652,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r 572f7b4d1c50 gcc/config/linux.h
>> +--- a/gcc/config/linux.h Sun Sep 08 22:58:18 2013 -0400
>> ++++ b/gcc/config/linux.h Mon Sep 09 12:48:34 2013 -0400
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,21 +89,21 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Determine whether the entire c99 runtime
>> + is present in the runtime library. */
>> + #undef TARGET_C99_FUNCTIONS
>> +-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
>> ++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
>> +
>> + /* Whether we have sincos that follows the GNU extension. */
>> + #undef TARGET_HAS_SINCOS
>> +@@ -107,3 +112,74 @@
>> + /* Whether we have Bionic libc runtime */
>> + #undef TARGET_HAS_BIONIC
>> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
>> ++
>> ++/* musl avoids problematic includes by rearranging the include directories.
>> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
>> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
>> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
>> ++
>> ++#ifdef LOCAL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++#endif
>> ++
>> ++#ifdef PREFIX_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
>> ++#endif
>> ++
>> ++#ifdef CROSS_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#ifdef TOOL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
>> ++#endif
>> ++
>> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#endif
>> ++
>> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
>> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#else
>> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
>> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#undef INCLUDE_DEFAULTS
>> ++#define INCLUDE_DEFAULTS \
>> ++ { \
>> ++ INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
>> ++ { 0, 0, 0, 0, 0, 0 } \
>> ++ }
>> ++#endif
>> +diff -r 572f7b4d1c50 gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Sun Sep 08 22:58:18 2013 -0400
>> ++++ b/gcc/config/linux.opt Mon Sep 09 12:48:34 2013 -0400
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r 572f7b4d1c50 gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Sun Sep 08 22:58:18 2013 -0400
>> ++++ b/gcc/ginclude/stddef.h Mon Sep 09 12:48:34 2013 -0400
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent 2b94537ce2496c88e7e797c617e5b95e8d7e4785
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r 2b94537ce249 libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Fri Mar 29 16:41:14 2013 -0400
>> ++++ b/libgomp/config/posix/time.c Fri Mar 29 16:41:17 2013 -0400
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +diff -r 7cba4201a2ae libgcc/unwind-dw2-fde-dip.c
>> +--- a/libgcc/unwind-dw2-fde-dip.c Sat Jul 27 22:53:05 2013 -0400
>> ++++ b/libgcc/unwind-dw2-fde-dip.c Sat Jul 27 22:57:08 2013 -0400
>> +@@ -46,33 +46,13 @@
>> + #include "unwind-compat.h"
>> + #include "gthr.h"
>> +
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
>> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
>> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
>> + # define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__BIONIC__)
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
>> +-# define ElfW __ElfN
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__OpenBSD__)
>> +-# define ElfW(type) Elf_##type
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(TARGET_DL_ITERATE_PHDR) \
>> +- && defined(__sun__) && defined(__svr4__)
>> +-# define USE_PT_GNU_EH_FRAME
>> ++# ifdef __OpenBSD__
>> ++# define ElfW(type) Elf_##typ
>> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
>> ++# define ElfW __ElfN
>> ++# endif
>> + #endif
>> +
>> + #if defined(USE_PT_GNU_EH_FRAME)
>> +diff -r 75d9c38318a7 gcc/configure
>> +--- a/gcc/configure Tue Sep 24 06:52:49 2013 -0400
>> ++++ b/gcc/configure Tue Sep 24 06:54:33 2013 -0400
>> +@@ -26736,6 +26736,9 @@
>> + else
>> + gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -26769,6 +26772,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
>> +@@ -26851,6 +26855,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> +
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +diff -r 75d9c38318a7 gcc/configure.ac
>> +--- a/gcc/configure.ac Tue Sep 24 06:52:49 2013 -0400
>> ++++ b/gcc/configure.ac Tue Sep 24 06:54:33 2013 -0400
>> +@@ -4719,6 +4719,9 @@
>> + gcc_cv_libc_provides_ssp,
>> + [gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + [# glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -4752,6 +4755,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
>> +@@ -4817,6 +4821,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +# HG changeset patch
>> +# Parent 94e435662aff38e86c9ca0dff4bbf451e0190b34
>> +Get rid of ever-broken fixincludes on musl.
>> +
>> +
>> +diff -r 94e435662aff -r e27957848dc8 fixincludes/mkfixinc.sh
>> +--- a/fixincludes/mkfixinc.sh Sat Jul 27 23:37:20 2013 -0400
>> ++++ b/fixincludes/mkfixinc.sh Sat Jul 27 23:43:03 2013 -0400
>> +@@ -19,7 +19,8 @@
>> + powerpc-*-eabi* | \
>> + powerpc-*-rtems* | \
>> + powerpcle-*-eabisim* | \
>> +- powerpcle-*-eabi* )
>> ++ powerpcle-*-eabi* | \
>> ++ *-musl* )
>> + # IF there is no include fixing,
>> + # THEN create a no-op fixer and exit
>> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
>> +# HG changeset patch
>> +# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r 3ea10cd626cb gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/gcc/config/i386/linux.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r 3ea10cd626cb gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/gcc/config/i386/linux64.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> +# HG changeset patch
>> +# Parent c3eb69047e35491fda9cd9ab1ee2ace1299c793c
>> +Support for arm-linux-musl.
>> +
>> +diff -r c3eb69047e35 gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Thu Sep 19 07:11:38 2013 -0400
>> ++++ b/gcc/config/arm/linux-eabi.h Thu Sep 19 08:56:47 2013 -0400
>> +@@ -77,6 +77,23 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* For ARM musl currently supports four dynamic linkers:
>> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
>> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
>> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
>> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
>> ++ musl does not support the legacy OABI mode.
>> ++ All the dynamic linkers live in /lib.
>> ++ We default to soft-float, EL. */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#if TARGET_BIG_ENDIAN_DEFAULT
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER \
>> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r c3eb69047e35 libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Thu Sep 19 07:11:38 2013 -0400
>> ++++ b/libitm/config/arm/hwcap.cc Thu Sep 19 08:56:47 2013 -0400
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent 4618ad6f036f1e944a5262ae5875dcdf62c41f8b
>> +Support for mips-linux-musl.
>> +
>> +diff -r 4618ad6f036f gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Thu Sep 19 08:56:47 2013 -0400
>> ++++ b/gcc/config/mips/linux.h Thu Sep 19 09:08:11 2013 -0400
>> +@@ -18,3 +18,10 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +# HG changeset patch
>> +# Parent 2ffe76b215fdb082cbbc262536077627757fa9bf
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 2ffe76b215fd gcc/config.gcc
>> +--- a/gcc/config.gcc Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config.gcc Fri Mar 29 16:41:28 2013 -0400
>> +@@ -2112,6 +2112,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 2ffe76b215fd gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -364,17 +364,21 @@
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> +
>> + #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
>> +diff -r 2ffe76b215fd gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -551,6 +551,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler and set correct endian mode. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu) \
>> +@@ -611,7 +614,8 @@
>> + %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
>> + %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
>> + %{mcall-i960-old: --oformat elf32-powerpcle} \
>> +- }}}}"
>> ++ }}}} \
>> ++%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -789,15 +793,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -923,6 +930,7 @@
>> + { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
>> + { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +--- a/gcc/config/aarch64/aarch64-linux.h 2013-01-10 21:38:27.000000000 +0100
>> ++++ b/gcc/config/aarch64/aarch64-linux.h 2013-09-12 21:39:34.004829498 +0200
>> +@@ -21,7 +21,11 @@
>> + #ifndef GCC_AARCH64_LINUX_H
>> + #define GCC_AARCH64_LINUX_H
>> +
>> ++/* The AArch64 port currently supports two dynamic linkers:
>> ++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
>> ++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
>> +
>> + #define LINUX_TARGET_LINK_SPEC "%{h*} \
>> + %{static:-Bstatic} \
>> diff --git a/patches/experimental/gcc/4.8.2/0001-musl.patch b/patches/experimental/gcc/4.8.2/0001-musl.patch
>> new file mode 100644
>> index 0000000..3ff2e30
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.8.2/0001-musl.patch
>> @@ -0,0 +1,750 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.2-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r df1a439b9058 libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Tue Dec 31 14:52:24 2013 -0500
>> ++++ b/libstdc++-v3/configure.host Tue Dec 31 14:54:49 2013 -0500
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent e5b4564f249f8634194bdabef4b3057d0e54ee97
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r e5b4564f249f gcc/config.gcc
>> +--- a/gcc/config.gcc Tue Dec 31 14:54:49 2013 -0500
>> ++++ b/gcc/config.gcc Tue Dec 31 14:54:52 2013 -0500
>> +@@ -550,7 +550,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # Common parts for widely ported systems.
>> + case ${target} in
>> +@@ -653,6 +653,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r e5b4564f249f gcc/config/linux.h
>> +--- a/gcc/config/linux.h Tue Dec 31 14:54:49 2013 -0500
>> ++++ b/gcc/config/linux.h Tue Dec 31 14:54:52 2013 -0500
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,21 +89,21 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Determine whether the entire c99 runtime
>> + is present in the runtime library. */
>> + #undef TARGET_C99_FUNCTIONS
>> +-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
>> ++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
>> +
>> + /* Whether we have sincos that follows the GNU extension. */
>> + #undef TARGET_HAS_SINCOS
>> +@@ -107,3 +112,74 @@
>> + /* Whether we have Bionic libc runtime */
>> + #undef TARGET_HAS_BIONIC
>> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
>> ++
>> ++/* musl avoids problematic includes by rearranging the include directories.
>> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
>> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
>> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
>> ++
>> ++#ifdef LOCAL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++#endif
>> ++
>> ++#ifdef PREFIX_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
>> ++#endif
>> ++
>> ++#ifdef CROSS_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#ifdef TOOL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
>> ++#endif
>> ++
>> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#endif
>> ++
>> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
>> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#else
>> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
>> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#undef INCLUDE_DEFAULTS
>> ++#define INCLUDE_DEFAULTS \
>> ++ { \
>> ++ INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
>> ++ { 0, 0, 0, 0, 0, 0 } \
>> ++ }
>> ++#endif
>> +diff -r e5b4564f249f gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Tue Dec 31 14:54:49 2013 -0500
>> ++++ b/gcc/config/linux.opt Tue Dec 31 14:54:52 2013 -0500
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r e5b4564f249f gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Tue Dec 31 14:54:49 2013 -0500
>> ++++ b/gcc/ginclude/stddef.h Tue Dec 31 14:54:52 2013 -0500
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent e08e44e39f5edde422f444487422046147d5821e
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r e08e44e39f5e libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Tue Dec 31 14:54:52 2013 -0500
>> ++++ b/libgomp/config/posix/time.c Tue Dec 31 14:54:55 2013 -0500
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +diff -r 809c85574bfe libgcc/unwind-dw2-fde-dip.c
>> +--- a/libgcc/unwind-dw2-fde-dip.c Tue Dec 31 14:54:55 2013 -0500
>> ++++ b/libgcc/unwind-dw2-fde-dip.c Tue Dec 31 14:54:58 2013 -0500
>> +@@ -46,33 +46,13 @@
>> + #include "unwind-compat.h"
>> + #include "gthr.h"
>> +
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
>> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
>> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
>> + # define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__BIONIC__)
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
>> +-# define ElfW __ElfN
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__OpenBSD__)
>> +-# define ElfW(type) Elf_##type
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(TARGET_DL_ITERATE_PHDR) \
>> +- && defined(__sun__) && defined(__svr4__)
>> +-# define USE_PT_GNU_EH_FRAME
>> ++# ifdef __OpenBSD__
>> ++# define ElfW(type) Elf_##type
>> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
>> ++# define ElfW __ElfN
>> ++# endif
>> + #endif
>> +
>> + #if defined(USE_PT_GNU_EH_FRAME)
>> +diff -r 03604918697c gcc/configure
>> +--- a/gcc/configure Tue Dec 31 14:54:58 2013 -0500
>> ++++ b/gcc/configure Tue Dec 31 14:55:01 2013 -0500
>> +@@ -26739,6 +26739,9 @@
>> + else
>> + gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -26772,6 +26775,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
>> +@@ -26854,6 +26858,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> +
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +diff -r 03604918697c gcc/configure.ac
>> +--- a/gcc/configure.ac Tue Dec 31 14:54:58 2013 -0500
>> ++++ b/gcc/configure.ac Tue Dec 31 14:55:01 2013 -0500
>> +@@ -4722,6 +4722,9 @@
>> + gcc_cv_libc_provides_ssp,
>> + [gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + [# glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -4755,6 +4758,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
>> +@@ -4820,6 +4824,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +# HG changeset patch
>> +# Parent 600a8a422ccaf5627ad1f5a138e7398df2b9e9d8
>> +Get rid of ever-broken fixincludes on musl.
>> +
>> +diff -r 600a8a422cca fixincludes/mkfixinc.sh
>> +--- a/fixincludes/mkfixinc.sh Tue Dec 31 14:55:01 2013 -0500
>> ++++ b/fixincludes/mkfixinc.sh Tue Dec 31 14:55:04 2013 -0500
>> +@@ -19,7 +19,8 @@
>> + powerpc-*-eabi* | \
>> + powerpc-*-rtems* | \
>> + powerpcle-*-eabisim* | \
>> +- powerpcle-*-eabi* )
>> ++ powerpcle-*-eabi* | \
>> ++ *-musl* )
>> + # IF there is no include fixing,
>> + # THEN create a no-op fixer and exit
>> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
>> +# HG changeset patch
>> +# Parent 4696c3bf3d913eca88e9385ea9717541dfe1e033
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r 4696c3bf3d91 gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Tue Dec 31 14:55:04 2013 -0500
>> ++++ b/gcc/config/i386/linux.h Tue Dec 31 14:55:08 2013 -0500
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r 4696c3bf3d91 gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Tue Dec 31 14:55:04 2013 -0500
>> ++++ b/gcc/config/i386/linux64.h Tue Dec 31 14:55:08 2013 -0500
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r 4696c3bf3d91 libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Tue Dec 31 14:55:04 2013 -0500
>> ++++ b/libitm/config/linux/x86/tls.h Tue Dec 31 14:55:08 2013 -0500
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> +# HG changeset patch
>> +# Parent 6738fd6f6fcc2a72f2ba527bda3325642af26885
>> +Support for arm-linux-musl.
>> +
>> +diff -r 6738fd6f6fcc gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Tue Dec 31 14:55:08 2013 -0500
>> ++++ b/gcc/config/arm/linux-eabi.h Tue Dec 31 14:55:11 2013 -0500
>> +@@ -77,6 +77,23 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* For ARM musl currently supports four dynamic linkers:
>> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
>> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
>> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
>> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
>> ++ musl does not support the legacy OABI mode.
>> ++ All the dynamic linkers live in /lib.
>> ++ We default to soft-float, EL. */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#if TARGET_BIG_ENDIAN_DEFAULT
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER \
>> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r 6738fd6f6fcc libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Tue Dec 31 14:55:08 2013 -0500
>> ++++ b/libitm/config/arm/hwcap.cc Tue Dec 31 14:55:11 2013 -0500
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent 7d7383f638705a01fdc18e0e7e0c9cdb6387fc5d
>> +Support for mips-linux-musl.
>> +
>> +diff -r 7d7383f63870 gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Tue Dec 31 14:55:11 2013 -0500
>> ++++ b/gcc/config/mips/linux.h Tue Dec 31 14:55:14 2013 -0500
>> +@@ -18,3 +18,10 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +# HG changeset patch
>> +# Parent 89df6d7e91c686da676ce27ef9b9d10522810c26
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 89df6d7e91c6 gcc/config.gcc
>> +--- a/gcc/config.gcc Tue Dec 31 14:55:14 2013 -0500
>> ++++ b/gcc/config.gcc Tue Dec 31 14:55:17 2013 -0500
>> +@@ -2117,6 +2117,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 89df6d7e91c6 gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Tue Dec 31 14:55:14 2013 -0500
>> ++++ b/gcc/config/rs6000/linux64.h Tue Dec 31 14:55:17 2013 -0500
>> +@@ -354,17 +354,21 @@
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> + #undef DEFAULT_ASM_ENDIAN
>> + #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
>> +diff -r 89df6d7e91c6 gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Tue Dec 31 14:55:14 2013 -0500
>> ++++ b/gcc/config/rs6000/secureplt.h Tue Dec 31 14:55:17 2013 -0500
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 89df6d7e91c6 gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Tue Dec 31 14:55:14 2013 -0500
>> ++++ b/gcc/config/rs6000/sysv4.h Tue Dec 31 14:55:17 2013 -0500
>> +@@ -550,6 +550,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler and set correct endian mode. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu)" \
>> +@@ -600,7 +603,8 @@
>> +
>> + /* Override the default target of the linker. */
>> + #define LINK_TARGET_SPEC \
>> +- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
>> ++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
>> ++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -778,15 +782,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -912,6 +919,7 @@
>> + { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
>> + { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +diff -r d7ce17b2f2d6 gcc/config/aarch64/aarch64-linux.h
>> +--- a/gcc/config/aarch64/aarch64-linux.h Tue Dec 31 14:55:17 2013 -0500
>> ++++ b/gcc/config/aarch64/aarch64-linux.h Tue Dec 31 14:55:20 2013 -0500
>> +@@ -21,7 +21,11 @@
>> + #ifndef GCC_AARCH64_LINUX_H
>> + #define GCC_AARCH64_LINUX_H
>> +
>> ++/* The AArch64 port currently supports two dynamic linkers:
>> ++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
>> ++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
>> +
>> + #define CPP_SPEC "%{pthread:-D_REENTRANT}"
>> +
>> +# HG changeset patch
>> +# Parent f2601e4063d0d58d8ab04185e8baefd560d09496
>> +Microblaze support (again).
>> +
>> +
>> +diff -r f2601e4063d0 -r 0736dfe1aa0d gcc/config/microblaze/linux.h
>> +--- a/gcc/config/microblaze/linux.h Tue Dec 31 14:55:20 2013 -0500
>> ++++ b/gcc/config/microblaze/linux.h Tue Dec 31 15:09:52 2013 -0500
>> +@@ -25,7 +25,22 @@
>> + #undef TLS_NEEDS_GOT
>> + #define TLS_NEEDS_GOT 1
>> +
>> +-#define DYNAMIC_LINKER "/lib/ld.so.1"
>> ++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
>> ++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
>> ++#else
>> ++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
>> ++#endif
>> ++
>> ++
>> + #undef SUBTARGET_EXTRA_SPECS
>> + #define SUBTARGET_EXTRA_SPECS \
>> + { "dynamic_linker", DYNAMIC_LINKER }
>> +From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
>> +From: David Holsgrove <david.holsgrove@xilinx.com>
>> +Date: Fri, 28 Sep 2012 16:32:03 +1000
>> +Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
>> + microblaze.h
>> +
>> +Fixes warnings like;
>> +
>> +warning: format '%zX' expects argument of type 'size_t',
>> +but argument 3 has type 'unsigned int' [-Wformat]
>> +
>> +Changelog
>> +
>> +2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
>> +
>> + * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
>> + and PTRDIFF_TYPE.
>> +
>> +Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
>> +---
>> + gcc/config/microblaze/microblaze.h | 6 ++++++
>> + 1 file changed, 6 insertions(+)
>> +
>> +diff --git a/gcc/config/microblaze/microblaze.h b/gcc/config/microblaze/microblaze.h
>> +index 19cdfed..e772a3f 100644
>> +--- a/gcc/config/microblaze/microblaze.h
>> ++++ b/gcc/config/microblaze/microblaze.h
>> +@@ -213,6 +213,12 @@ extern enum pipeline_type microblaze_pipe;
>> + #define STRICT_ALIGNMENT 1
>> + #define PCC_BITFIELD_TYPE_MATTERS 1
>> +
>> ++#undef SIZE_TYPE
>> ++#define SIZE_TYPE "unsigned int"
>> ++
>> ++#undef PTRDIFF_TYPE
>> ++#define PTRDIFF_TYPE "int"
>> ++
>> + #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
>> + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
>> + && (ALIGN) < BITS_PER_WORD \
>> +--
>> +1.7.9.5
>> +
>> +--- gcc-4.8.2.org/gcc/config/sh/linux.h
>> ++++ gcc-4.8.2/gcc/config/sh/linux.h
>> +@@ -43,7 +43,14 @@
>> +
>> + #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
>> +
>> ++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
>> ++#define MUSL_DYNAMIC_LINKER_E "eb"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E
>> ++#endif
>> ++
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +
>> + #undef SUBTARGET_LINK_EMUL_SUFFIX
>> + #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
>> +--- gcc-4.8.2.org/gcc/config/sh/sh.c
>> ++++ gcc-4.8.2/gcc/config/sh/sh.c
>> +@@ -22,8 +22,17 @@
>> + /* FIXME: This is a temporary hack, so that we can include <algorithm>
>> + below. <algorithm> will try to include <cstdlib> which will reference
>> + malloc & co, which are poisoned by "system.h". The proper solution is
>> +- to include <cstdlib> in "system.h" instead of <stdlib.h>. */
>> ++ to include <cstdlib> in "system.h" instead of <stdlib.h>.
>> ++ It's also a temporary hack as the inclusion of sstream will cause inclusion
>> ++ of libc's pthread.h (istream->ios->ios_base->atomicity->gth->gthr-default)
>> ++ which in turn includes sched.h, which defines the CPU_ALLOC, which uses
>> ++ the poisoned calloc. the proper fix would be to shield the poison pragmas
>> ++ with some define that is only set when gcc developers do testing.
>> ++*/
>> + #include <cstdlib>
>> ++#include <sstream>
>> ++#include <vector>
>> ++#include <algorithm>
>> +
>> + #include "config.h"
>> + #include "system.h"
>> +@@ -59,10 +68,6 @@
>> + #include "alloc-pool.h"
>> + #include "tm-constrs.h"
>> + #include "opts.h"
>> +-
>> +-#include <sstream>
>> +-#include <vector>
>> +-#include <algorithm>
>> +
>> + int code_for_indirect_jump_scratch = CODE_FOR_indirect_jump_scratch;
>> +
>> diff --git a/patches/experimental/gcc/4.8.3/0001-musl.patch b/patches/experimental/gcc/4.8.3/0001-musl.patch
>> new file mode 100644
>> index 0000000..3e23402
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.8.3/0001-musl.patch
>> @@ -0,0 +1,736 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.3-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r 3265a3936a0f libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Tue May 27 17:11:50 2014 -0400
>> ++++ b/libstdc++-v3/configure.host Tue May 27 17:18:49 2014 -0400
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent feba6705f7e390f69e474a7c761a0eb7add7d414
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r feba6705f7e3 gcc/config.gcc
>> +--- a/gcc/config.gcc Tue May 27 17:18:49 2014 -0400
>> ++++ b/gcc/config.gcc Tue May 27 17:18:52 2014 -0400
>> +@@ -550,7 +550,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # Common parts for widely ported systems.
>> + case ${target} in
>> +@@ -653,6 +653,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r feba6705f7e3 gcc/config/linux.h
>> +--- a/gcc/config/linux.h Tue May 27 17:18:49 2014 -0400
>> ++++ b/gcc/config/linux.h Tue May 27 17:18:52 2014 -0400
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,21 +89,21 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Determine whether the entire c99 runtime
>> + is present in the runtime library. */
>> + #undef TARGET_C99_FUNCTIONS
>> +-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
>> ++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
>> +
>> + /* Whether we have sincos that follows the GNU extension. */
>> + #undef TARGET_HAS_SINCOS
>> +@@ -107,3 +112,74 @@
>> + /* Whether we have Bionic libc runtime */
>> + #undef TARGET_HAS_BIONIC
>> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
>> ++
>> ++/* musl avoids problematic includes by rearranging the include directories.
>> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
>> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
>> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
>> ++
>> ++#ifdef LOCAL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++#endif
>> ++
>> ++#ifdef PREFIX_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
>> ++#endif
>> ++
>> ++#ifdef CROSS_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#ifdef TOOL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
>> ++#endif
>> ++
>> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#endif
>> ++
>> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
>> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#else
>> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
>> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#undef INCLUDE_DEFAULTS
>> ++#define INCLUDE_DEFAULTS \
>> ++ { \
>> ++ INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
>> ++ { 0, 0, 0, 0, 0, 0 } \
>> ++ }
>> ++#endif
>> +diff -r feba6705f7e3 gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Tue May 27 17:18:49 2014 -0400
>> ++++ b/gcc/config/linux.opt Tue May 27 17:18:52 2014 -0400
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r feba6705f7e3 gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Tue May 27 17:18:49 2014 -0400
>> ++++ b/gcc/ginclude/stddef.h Tue May 27 17:18:52 2014 -0400
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent 77fd601051c4644b37838a8e5305c6971feab94f
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r 77fd601051c4 libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Tue May 27 17:18:52 2014 -0400
>> ++++ b/libgomp/config/posix/time.c Tue May 27 17:18:55 2014 -0400
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +diff -r abebeb8818d8 libgcc/unwind-dw2-fde-dip.c
>> +--- a/libgcc/unwind-dw2-fde-dip.c Tue May 27 17:18:55 2014 -0400
>> ++++ b/libgcc/unwind-dw2-fde-dip.c Tue May 27 17:18:58 2014 -0400
>> +@@ -46,33 +46,13 @@
>> + #include "unwind-compat.h"
>> + #include "gthr.h"
>> +
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
>> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
>> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
>> + # define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__BIONIC__)
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
>> +-# define ElfW __ElfN
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__OpenBSD__)
>> +-# define ElfW(type) Elf_##type
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(TARGET_DL_ITERATE_PHDR) \
>> +- && defined(__sun__) && defined(__svr4__)
>> +-# define USE_PT_GNU_EH_FRAME
>> ++# ifdef __OpenBSD__
>> ++# define ElfW(type) Elf_##type
>> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
>> ++# define ElfW __ElfN
>> ++# endif
>> + #endif
>> +
>> + #if defined(USE_PT_GNU_EH_FRAME)
>> +diff -r 68e6894cdeea gcc/configure
>> +--- a/gcc/configure Tue May 27 17:18:58 2014 -0400
>> ++++ b/gcc/configure Tue May 27 17:19:01 2014 -0400
>> +@@ -26821,6 +26821,9 @@
>> + else
>> + gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -26854,6 +26857,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
>> +@@ -26936,6 +26940,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> +
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +diff -r 68e6894cdeea gcc/configure.ac
>> +--- a/gcc/configure.ac Tue May 27 17:18:58 2014 -0400
>> ++++ b/gcc/configure.ac Tue May 27 17:19:01 2014 -0400
>> +@@ -4750,6 +4750,9 @@
>> + gcc_cv_libc_provides_ssp,
>> + [gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + [# glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -4783,6 +4786,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
>> +@@ -4848,6 +4852,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +# HG changeset patch
>> +# Parent 5e0be25b469181f67d89382c7da201510c229f90
>> +Get rid of ever-broken fixincludes on musl.
>> +
>> +diff -r 5e0be25b4691 fixincludes/mkfixinc.sh
>> +--- a/fixincludes/mkfixinc.sh Tue May 27 17:19:01 2014 -0400
>> ++++ b/fixincludes/mkfixinc.sh Tue May 27 17:19:04 2014 -0400
>> +@@ -19,7 +19,8 @@
>> + powerpc-*-eabi* | \
>> + powerpc-*-rtems* | \
>> + powerpcle-*-eabisim* | \
>> +- powerpcle-*-eabi* )
>> ++ powerpcle-*-eabi* | \
>> ++ *-musl* )
>> + # IF there is no include fixing,
>> + # THEN create a no-op fixer and exit
>> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
>> +# HG changeset patch
>> +# Parent dd2004fbd61c182919b800cec63806060b4228e5
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r dd2004fbd61c gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Tue May 27 17:19:04 2014 -0400
>> ++++ b/gcc/config/i386/linux.h Tue May 27 17:19:07 2014 -0400
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r dd2004fbd61c gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Tue May 27 17:19:04 2014 -0400
>> ++++ b/gcc/config/i386/linux64.h Tue May 27 17:19:07 2014 -0400
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r dd2004fbd61c libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Tue May 27 17:19:04 2014 -0400
>> ++++ b/libitm/config/linux/x86/tls.h Tue May 27 17:19:07 2014 -0400
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> +# HG changeset patch
>> +# Parent 42eeea84a212601568b5a6d17eb28cfba4b45e1d
>> +Support for arm-linux-musl.
>> +
>> +diff -r 42eeea84a212 gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Tue May 27 17:19:07 2014 -0400
>> ++++ b/gcc/config/arm/linux-eabi.h Tue May 27 17:19:11 2014 -0400
>> +@@ -77,6 +77,23 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* For ARM musl currently supports four dynamic linkers:
>> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
>> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
>> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
>> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
>> ++ musl does not support the legacy OABI mode.
>> ++ All the dynamic linkers live in /lib.
>> ++ We default to soft-float, EL. */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#if TARGET_BIG_ENDIAN_DEFAULT
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER \
>> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r 42eeea84a212 libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Tue May 27 17:19:07 2014 -0400
>> ++++ b/libitm/config/arm/hwcap.cc Tue May 27 17:19:11 2014 -0400
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent fae0f2a79418e010ac48deb6dc84b16524158f4d
>> +Support for mips-linux-musl.
>> +
>> +diff -r fae0f2a79418 gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Tue May 27 17:19:10 2014 -0400
>> ++++ b/gcc/config/mips/linux.h Tue May 27 17:19:14 2014 -0400
>> +@@ -18,3 +18,10 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +# HG changeset patch
>> +# Parent 5f732d28ac6e18a515050808509c12a97a63af48
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 5f732d28ac6e gcc/config.gcc
>> +--- a/gcc/config.gcc Tue May 27 17:19:13 2014 -0400
>> ++++ b/gcc/config.gcc Tue May 27 17:19:17 2014 -0400
>> +@@ -2138,6 +2138,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 5f732d28ac6e gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Tue May 27 17:19:13 2014 -0400
>> ++++ b/gcc/config/rs6000/linux64.h Tue May 27 17:19:17 2014 -0400
>> +@@ -374,17 +374,21 @@
>> + #endif
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> + #undef DEFAULT_ASM_ENDIAN
>> + #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
>> +diff -r 5f732d28ac6e gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Tue May 27 17:19:13 2014 -0400
>> ++++ b/gcc/config/rs6000/secureplt.h Tue May 27 17:19:17 2014 -0400
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 5f732d28ac6e gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Tue May 27 17:19:13 2014 -0400
>> ++++ b/gcc/config/rs6000/sysv4.h Tue May 27 17:19:17 2014 -0400
>> +@@ -537,6 +537,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu)" \
>> +@@ -585,7 +588,8 @@
>> +
>> + /* Override the default target of the linker. */
>> + #define LINK_TARGET_SPEC \
>> +- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
>> ++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
>> ++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -763,15 +767,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -894,6 +901,7 @@
>> + { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
>> + { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +diff -r 4d2277f95a50 gcc/config/aarch64/aarch64-linux.h
>> +--- a/gcc/config/aarch64/aarch64-linux.h Tue May 27 17:19:17 2014 -0400
>> ++++ b/gcc/config/aarch64/aarch64-linux.h Tue May 27 17:19:20 2014 -0400
>> +@@ -21,7 +21,11 @@
>> + #ifndef GCC_AARCH64_LINUX_H
>> + #define GCC_AARCH64_LINUX_H
>> +
>> ++/* The AArch64 port currently supports two dynamic linkers:
>> ++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
>> ++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
>> +
>> + #define CPP_SPEC "%{pthread:-D_REENTRANT}"
>> +
>> +# HG changeset patch
>> +# Parent 11f8f95e9940bff12445f189dae33a4a8074ed1a
>> +Microblaze support (again).
>> +
>> +diff -r 11f8f95e9940 gcc/config/microblaze/linux.h
>> +--- a/gcc/config/microblaze/linux.h Tue May 27 17:19:20 2014 -0400
>> ++++ b/gcc/config/microblaze/linux.h Tue May 27 17:19:23 2014 -0400
>> +@@ -25,7 +25,22 @@
>> + #undef TLS_NEEDS_GOT
>> + #define TLS_NEEDS_GOT 1
>> +
>> +-#define DYNAMIC_LINKER "/lib/ld.so.1"
>> ++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
>> ++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
>> ++#else
>> ++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
>> ++#endif
>> ++
>> ++
>> + #undef SUBTARGET_EXTRA_SPECS
>> + #define SUBTARGET_EXTRA_SPECS \
>> + { "dynamic_linker", DYNAMIC_LINKER }
>> +From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
>> +From: David Holsgrove <david.holsgrove@xilinx.com>
>> +Date: Fri, 28 Sep 2012 16:32:03 +1000
>> +Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
>> + microblaze.h
>> +
>> +Fixes warnings like;
>> +
>> +warning: format '%zX' expects argument of type 'size_t',
>> +but argument 3 has type 'unsigned int' [-Wformat]
>> +
>> +Changelog
>> +
>> +2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
>> +
>> + * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
>> + and PTRDIFF_TYPE.
>> +
>> +Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
>> +---
>> + gcc/config/microblaze/microblaze.h | 6 ++++++
>> + 1 file changed, 6 insertions(+)
>> +
>> +diff -r 2af2905d4b10 gcc/config/microblaze/microblaze.h
>> +--- a/gcc/config/microblaze/microblaze.h Tue May 27 17:19:22 2014 -0400
>> ++++ b/gcc/config/microblaze/microblaze.h Tue May 27 17:19:26 2014 -0400
>> +@@ -219,6 +219,12 @@
>> + #undef PTRDIFF_TYPE
>> + #define PTRDIFF_TYPE "int"
>> +
>> ++#undef SIZE_TYPE
>> ++#define SIZE_TYPE "unsigned int"
>> ++
>> ++#undef PTRDIFF_TYPE
>> ++#define PTRDIFF_TYPE "int"
>> ++
>> + #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
>> + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
>> + && (ALIGN) < BITS_PER_WORD \
>> +diff -Nur gcc-4.8.3.orig/gcc/config/microblaze/microblaze.md gcc-4.8.3/gcc/config/microblaze/microblaze.md
>> +--- gcc-4.8.3.orig/gcc/config/microblaze/microblaze.md 2014-02-23 19:59:26.000000000 +0100
>> ++++ gcc-4.8.3/gcc/config/microblaze/microblaze.md 2014-05-31 20:39:29.978608468 +0200
>> +@@ -1119,18 +1119,6 @@
>> + }
>> + )
>> +
>> +-;;Load and store reverse
>> +-(define_insn "movsi4_rev"
>> +- [(set (match_operand:SI 0 "reg_or_mem_operand" "=r,Q")
>> +- (bswap:SI (match_operand:SF 1 "reg_or_mem_operand" "Q,r")))]
>> +- "TARGET_REORDER"
>> +- "@
>> +- lwr\t%0,%y1,r0
>> +- swr\t%1,%y0,r0"
>> +- [(set_attr "type" "load,store")
>> +- (set_attr "mode" "SI")
>> +- (set_attr "length" "4,4")])
>> +-
>> + ;; 32-bit floating point moves
>> +
>> + (define_expand "movsf"
>> +diff -r 596e2430c627 gcc/config/sh/linux.h
>> +--- a/gcc/config/sh/linux.h Fri Sep 28 16:32:03 2012 +1000
>> ++++ b/gcc/config/sh/linux.h Tue May 27 17:19:29 2014 -0400
>> +@@ -43,7 +43,14 @@
>> +
>> + #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
>> +
>> ++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
>> ++#define MUSL_DYNAMIC_LINKER_E "eb"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E
>> ++#endif
>> ++
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +
>> + #undef SUBTARGET_LINK_EMUL_SUFFIX
>> + #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
>> diff --git a/patches/experimental/gcc/4.9.0/0001-musl.patch b/patches/experimental/gcc/4.9.0/0001-musl.patch
>> new file mode 100644
>> index 0000000..de6f532
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.9.0/0001-musl.patch
>> @@ -0,0 +1,706 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.9.0-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r 2f9df662aaab libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Tue May 20 11:00:21 2014 -0400
>> ++++ b/libstdc++-v3/configure.host Tue May 20 11:05:42 2014 -0400
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent b6f4ce05a3155dbcbc06d72aebdb67e2f8abc094
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r b6f4ce05a315 gcc/config.gcc
>> +--- a/gcc/config.gcc Tue May 20 11:05:42 2014 -0400
>> ++++ b/gcc/config.gcc Tue May 20 11:05:45 2014 -0400
>> +@@ -594,7 +594,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # 32-bit x86 processors supported by --with-arch=. Each processor
>> + # MUST be separated by exactly one space.
>> +@@ -719,6 +719,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r b6f4ce05a315 gcc/config/linux.h
>> +--- a/gcc/config/linux.h Tue May 20 11:05:42 2014 -0400
>> ++++ b/gcc/config/linux.h Tue May 20 11:05:45 2014 -0400
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,21 +89,92 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Whether we have Bionic libc runtime */
>> + #undef TARGET_HAS_BIONIC
>> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
>> +
>> ++/* musl avoids problematic includes by rearranging the include directories.
>> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
>> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
>> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
>> ++
>> ++#ifdef LOCAL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++#endif
>> ++
>> ++#ifdef PREFIX_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
>> ++#endif
>> ++
>> ++#ifdef CROSS_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#ifdef TOOL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
>> ++#endif
>> ++
>> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#endif
>> ++
>> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
>> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#else
>> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
>> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#undef INCLUDE_DEFAULTS
>> ++#define INCLUDE_DEFAULTS \
>> ++ { \
>> ++ INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
>> ++ { 0, 0, 0, 0, 0, 0 } \
>> ++ }
>> ++#endif
>> ++
>> + #if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
>> + /* This is a *uclinux* target. We don't define below macros to normal linux
>> + versions, because doing so would require *uclinux* targets to include
>> +diff -r b6f4ce05a315 gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Tue May 20 11:05:42 2014 -0400
>> ++++ b/gcc/config/linux.opt Tue May 20 11:05:45 2014 -0400
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r b6f4ce05a315 gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Tue May 20 11:05:42 2014 -0400
>> ++++ b/gcc/ginclude/stddef.h Tue May 20 11:05:45 2014 -0400
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent 65d595ef9fc3cdbbde4894d927593f1b0f5bbcb7
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r 65d595ef9fc3 libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Tue May 20 11:05:45 2014 -0400
>> ++++ b/libgomp/config/posix/time.c Tue May 20 11:05:48 2014 -0400
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +diff -r 95f4f1d7668b libgcc/unwind-dw2-fde-dip.c
>> +--- a/libgcc/unwind-dw2-fde-dip.c Tue May 20 11:05:48 2014 -0400
>> ++++ b/libgcc/unwind-dw2-fde-dip.c Tue May 20 11:05:52 2014 -0400
>> +@@ -46,33 +46,13 @@
>> + #include "unwind-compat.h"
>> + #include "gthr.h"
>> +
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
>> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
>> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
>> + # define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__BIONIC__)
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
>> +-# define ElfW __ElfN
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__OpenBSD__)
>> +-# define ElfW(type) Elf_##type
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(TARGET_DL_ITERATE_PHDR) \
>> +- && defined(__sun__) && defined(__svr4__)
>> +-# define USE_PT_GNU_EH_FRAME
>> ++# ifdef __OpenBSD__
>> ++# define ElfW(type) Elf_##type
>> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
>> ++# define ElfW __ElfN
>> ++# endif
>> + #endif
>> +
>> + #if defined(USE_PT_GNU_EH_FRAME)
>> +diff -r ff03fa61c6b3 gcc/configure
>> +--- a/gcc/configure Tue May 20 11:05:51 2014 -0400
>> ++++ b/gcc/configure Tue May 20 11:05:55 2014 -0400
>> +@@ -27300,6 +27300,9 @@
>> + else
>> + gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -27332,6 +27335,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
>> +@@ -27421,6 +27425,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> +
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +diff -r ff03fa61c6b3 gcc/configure.ac
>> +--- a/gcc/configure.ac Tue May 20 11:05:51 2014 -0400
>> ++++ b/gcc/configure.ac Tue May 20 11:05:55 2014 -0400
>> +@@ -5001,6 +5001,9 @@
>> + gcc_cv_libc_provides_ssp,
>> + [gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -5027,6 +5030,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
>> +@@ -5093,6 +5097,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +# HG changeset patch
>> +# Parent 26f591b9e77e3df3d0f772b840bd9c13ec24bd4c
>> +Get rid of ever-broken fixincludes on musl.
>> +
>> +diff -r 26f591b9e77e fixincludes/mkfixinc.sh
>> +--- a/fixincludes/mkfixinc.sh Tue May 20 11:05:55 2014 -0400
>> ++++ b/fixincludes/mkfixinc.sh Tue May 20 11:05:58 2014 -0400
>> +@@ -19,7 +19,8 @@
>> + powerpc-*-eabi* | \
>> + powerpc-*-rtems* | \
>> + powerpcle-*-eabisim* | \
>> +- powerpcle-*-eabi* )
>> ++ powerpcle-*-eabi* | \
>> ++ *-musl* )
>> + # IF there is no include fixing,
>> + # THEN create a no-op fixer and exit
>> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
>> +# HG changeset patch
>> +# Parent bc117c35705fcc39396c19af046101411f251161
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r bc117c35705f gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Tue May 20 11:05:58 2014 -0400
>> ++++ b/gcc/config/i386/linux.h Tue May 20 11:06:01 2014 -0400
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r bc117c35705f gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Tue May 20 11:05:58 2014 -0400
>> ++++ b/gcc/config/i386/linux64.h Tue May 20 11:06:01 2014 -0400
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r bc117c35705f libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Tue May 20 11:05:58 2014 -0400
>> ++++ b/libitm/config/linux/x86/tls.h Tue May 20 11:06:01 2014 -0400
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> +# HG changeset patch
>> +# Parent 933c4f064622eb96a0b2ab213abd0cddbd977d1a
>> +Support for arm-linux-musl.
>> +
>> +diff -r 933c4f064622 gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Tue May 20 11:06:01 2014 -0400
>> ++++ b/gcc/config/arm/linux-eabi.h Tue May 20 11:06:04 2014 -0400
>> +@@ -77,6 +77,23 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* For ARM musl currently supports four dynamic linkers:
>> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
>> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
>> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
>> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
>> ++ musl does not support the legacy OABI mode.
>> ++ All the dynamic linkers live in /lib.
>> ++ We default to soft-float, EL. */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#if TARGET_BIG_ENDIAN_DEFAULT
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER \
>> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r 933c4f064622 libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Tue May 20 11:06:01 2014 -0400
>> ++++ b/libitm/config/arm/hwcap.cc Tue May 20 11:06:04 2014 -0400
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent 03fe896f3acaa911e935a8e999d15c7542ee73d1
>> +Support for mips-linux-musl.
>> +
>> +diff -r 03fe896f3aca gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Tue May 20 11:06:04 2014 -0400
>> ++++ b/gcc/config/mips/linux.h Tue May 20 11:06:08 2014 -0400
>> +@@ -23,3 +23,10 @@
>> + #undef UCLIBC_DYNAMIC_LINKER
>> + #define UCLIBC_DYNAMIC_LINKER \
>> + "%{mnan=2008:/lib/ld-uClibc-mipsn8.so.0;:/lib/ld-uClibc.so.0}"
>> ++
>> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +# HG changeset patch
>> +# Parent 6097333f2ab47a4ce37ccfb18b0f07a0cdcfec49
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 6097333f2ab4 gcc/config.gcc
>> +--- a/gcc/config.gcc Tue May 20 11:06:08 2014 -0400
>> ++++ b/gcc/config.gcc Tue May 20 11:06:11 2014 -0400
>> +@@ -2326,6 +2326,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 6097333f2ab4 gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Tue May 20 11:06:08 2014 -0400
>> ++++ b/gcc/config/rs6000/linux64.h Tue May 20 11:06:11 2014 -0400
>> +@@ -375,17 +375,21 @@
>> + #endif
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> + #undef DEFAULT_ASM_ENDIAN
>> + #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
>> +diff -r 6097333f2ab4 gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Tue May 20 11:06:08 2014 -0400
>> ++++ b/gcc/config/rs6000/secureplt.h Tue May 20 11:06:11 2014 -0400
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 6097333f2ab4 gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Tue May 20 11:06:08 2014 -0400
>> ++++ b/gcc/config/rs6000/sysv4.h Tue May 20 11:06:11 2014 -0400
>> +@@ -537,6 +537,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu)" \
>> +@@ -585,7 +588,8 @@
>> +
>> + /* Override the default target of the linker. */
>> + #define LINK_TARGET_SPEC \
>> +- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
>> ++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
>> ++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -763,15 +767,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -894,6 +901,7 @@
>> + { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
>> + { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +diff -r 813971b9f083 gcc/config/aarch64/aarch64-linux.h
>> +--- a/gcc/config/aarch64/aarch64-linux.h Tue May 20 11:06:11 2014 -0400
>> ++++ b/gcc/config/aarch64/aarch64-linux.h Tue May 20 11:06:14 2014 -0400
>> +@@ -23,6 +23,8 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}.so.1"
>> +
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
>> ++
>> + #define CPP_SPEC "%{pthread:-D_REENTRANT}"
>> +
>> + #define LINUX_TARGET_LINK_SPEC "%{h*} \
>> +# HG changeset patch
>> +# Parent 4a62a6813db995fe195d47ff73234d455975ac30
>> +Microblaze support (again).
>> +
>> +diff -r 4a62a6813db9 gcc/config/microblaze/linux.h
>> +--- a/gcc/config/microblaze/linux.h Tue May 20 11:06:14 2014 -0400
>> ++++ b/gcc/config/microblaze/linux.h Tue May 20 11:06:17 2014 -0400
>> +@@ -25,7 +25,22 @@
>> + #undef TLS_NEEDS_GOT
>> + #define TLS_NEEDS_GOT 1
>> +
>> +-#define DYNAMIC_LINKER "/lib/ld.so.1"
>> ++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
>> ++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
>> ++#else
>> ++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
>> ++#endif
>> ++
>> ++
>> + #undef SUBTARGET_EXTRA_SPECS
>> + #define SUBTARGET_EXTRA_SPECS \
>> + { "dynamic_linker", DYNAMIC_LINKER }
>> +From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
>> +From: David Holsgrove <david.holsgrove@xilinx.com>
>> +Date: Fri, 28 Sep 2012 16:32:03 +1000
>> +Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
>> + microblaze.h
>> +
>> +Fixes warnings like;
>> +
>> +warning: format '%zX' expects argument of type 'size_t',
>> +but argument 3 has type 'unsigned int' [-Wformat]
>> +
>> +Changelog
>> +
>> +2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
>> +
>> + * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
>> + and PTRDIFF_TYPE.
>> +
>> +Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
>> +---
>> + gcc/config/microblaze/microblaze.h | 6 ++++++
>> + 1 file changed, 6 insertions(+)
>> +
>> +diff -r 20d1c995f5de gcc/config/microblaze/microblaze.h
>> +--- a/gcc/config/microblaze/microblaze.h Tue May 20 11:06:17 2014 -0400
>> ++++ b/gcc/config/microblaze/microblaze.h Tue May 20 11:06:20 2014 -0400
>> +@@ -218,6 +218,12 @@
>> + #undef PTRDIFF_TYPE
>> + #define PTRDIFF_TYPE "int"
>> +
>> ++#undef SIZE_TYPE
>> ++#define SIZE_TYPE "unsigned int"
>> ++
>> ++#undef PTRDIFF_TYPE
>> ++#define PTRDIFF_TYPE "int"
>> ++
>> + #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
>> + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
>> + && (ALIGN) < BITS_PER_WORD \
>> +diff -r 2f999fc929da gcc/config/sh/linux.h
>> +--- a/gcc/config/sh/linux.h Fri Sep 28 16:32:03 2012 +1000
>> ++++ b/gcc/config/sh/linux.h Tue May 20 11:06:23 2014 -0400
>> +@@ -43,7 +43,14 @@
>> +
>> + #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
>> +
>> ++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
>> ++#define MUSL_DYNAMIC_LINKER_E "eb"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E
>> ++#endif
>> ++
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +
>> + #undef SUBTARGET_LINK_EMUL_SUFFIX
>> + #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
>> diff --git a/patches/musl/1.0.3/0001-fix_linker_regression.patch b/patches/musl/1.0.3/0001-fix_linker_regression.patch
>> new file mode 100644
>> index 0000000..801cb00
>> --- /dev/null
>> +++ b/patches/musl/1.0.3/0001-fix_linker_regression.patch
>> @@ -0,0 +1,64 @@
>> +From 9a4ad02214a859e93d2c980e4535378a6a74e3a6 Mon Sep 17 00:00:00 2001
>> +From: Rich Felker <dalias@aerifal.cx>
>> +Date: Mon, 30 Jun 2014 01:52:54 +0000
>> +Subject: fix regression in dynamic linker error reporting
>> +
>> +due to a mistake when refactoring the error printing for the dynamic
>> +linker (commit 7c73cacd09a51a87484db5689864743e4984a84d), all messages
>> +were suppressed and replaced by blank lines.
>> +---
>> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
>> +index bc4f2f6..a08300d 100644
>> +--- a/src/ldso/dynlink.c
>> ++++ b/src/ldso/dynlink.c
>> +@@ -290,8 +290,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + if (!astype) continue;
>> + type = remap_rel(astype);
>> + if (!type) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: unsupported relocation type %d",
>> ++ error("Error relocating %s: unsupported relocation type %d",
>> + dso->name, astype);
>> + continue;
>> + }
>> +@@ -304,8 +303,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + def = find_sym(ctx, name, type==REL_PLT);
>> + if (!def.sym && (sym->st_shndx != SHN_UNDEF
>> + || sym->st_info>>4 != STB_WEAK)) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: %s: symbol not found",
>> ++ error("Error relocating %s: %s: symbol not found",
>> + dso->name, name);
>> + continue;
>> + }
>> +@@ -366,7 +364,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + if (stride<3) addend = reloc_addr[1];
>> + if (runtime && def.dso->tls_id >= static_tls_cnt) {
>> + struct td_index *new = malloc(sizeof *new);
>> +- if (!new) error(errbuf, sizeof errbuf,
>> ++ if (!new) error(
>> + "Error relocating %s: cannot allocate TLSDESC for %s",
>> + dso->name, sym ? name : "(local)" );
>> + new->next = dso->td_index;
>> +@@ -839,8 +837,7 @@ static void load_deps(struct dso *p)
>> + if (p->dynv[i] != DT_NEEDED) continue;
>> + dep = load_library(p->strings + p->dynv[i+1], p);
>> + if (!dep) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error loading shared library %s: %m (needed by %s)",
>> ++ error("Error loading shared library %s: %m (needed by %s)",
>> + p->strings + p->dynv[i+1], p->name);
>> + continue;
>> + }
>> +@@ -890,8 +887,7 @@ static void reloc_all(struct dso *p)
>> +
>> + if (p->relro_start != p->relro_end &&
>> + mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ) < 0) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: RELRO protection failed: %m",
>> ++ error("Error relocating %s: RELRO protection failed: %m",
>> + p->name);
>> + }
>> +
>> +--
>> +cgit v0.9.0.3-65-g4555
>> diff --git a/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch b/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
>> new file mode 100644
>> index 0000000..4891b4f
>> --- /dev/null
>> +++ b/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
>> @@ -0,0 +1,88 @@
>> +From 2d8cc92a7cb4a3256ed07d86843388ffd8a882b1 Mon Sep 17 00:00:00 2001
>> +From: Rich Felker <dalias@aerifal.cx>
>> +Date: Mon, 30 Jun 2014 05:18:14 +0000
>> +Subject: fix regression in mips dynamic linker
>> +
>> +this issue caused the address of functions in shared libraries to
>> +resolve to their PLT thunks in the main program rather than their
>> +correct addresses. it was observed causing crashes, though the
>> +mechanism of the crash was not thoroughly investigated. since the
>> +issue is very subtle, it calls for some explanation:
>> +
>> +on all well-behaved archs, GOT entries that belong to the PLT use a
>> +special relocation type, typically called JMP_SLOT, so that the
>> +dynamic linker can avoid having the jump destinations for the PLT
>> +resolve to PLT thunks themselves (they also provide a definition for
>> +the symbol, which must be used whenever the address of the function is
>> +taken so that all DSOs see the same address).
>> +
>> +however, the traditional mips PIC ABI lacked such a JMP_SLOT
>> +relocation type, presumably because, due to the way PIC works, the
>> +address of the PLT thunk was never needed and could always be ignored.
>> +
>> +prior to commit adf94c19666e687a728bbf398f9a88ea4ea19996, the mips
>> +version of reloc.h contained a hack that caused all symbol lookups to
>> +be treated like JMP_SLOT, inhibiting undefined symbols from ever being
>> +used to resolve symbolic relocations. this hack goes all the way back
>> +to commit babf820180368f00742ec65b2050a82380d7c542, when the mips
>> +dynamic linker was first made usable.
>> +
>> +during the recent refactoring to eliminate arch-specific relocation
>> +processing (commit adf94c19666e687a728bbf398f9a88ea4ea19996), this
>> +hack was overlooked and no equivalent functionality was provided in
>> +the new code.
>> +
>> +fixing the problem is not as simple as adding back an equivalent hack,
>> +since there is now also a "non-PIC ABI" that can be used for the main
>> +executable, which actually does use a PLT. the closest thing to
>> +official documentation I could find for this ABI is nonpic.txt,
>> +attached to Message-ID: 20080701202236.GA1534@caradoc.them.org, which
>> +can be found in the gcc mailing list archives and elsewhere. per this
>> +document, undefined symbols corresponding to PLT thunks have the
>> +STO_MIPS_PLT bit set in the symbol's st_other field. thus, I have
>> +added an arch-specific rule for mips, applied at the find_sym level
>> +rather than the relocation level, to reject undefined symbols with the
>> +STO_MIPS_PLT bit clear.
>> +
>> +the previous hack of treating all mips relocations as JMP_SLOT-like,
>> +rather than rejecting the unwanted symbols in find_sym, probably also
>> +caused dlsym to wrongly return PLT thunks in place of the correct
>> +address of a function under at least some conditions. this should now
>> +be fixed, at least for global-scope symbol lookups.
>> +---
>> +diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
>> +index 91fa097..4b81d32 100644
>> +--- a/arch/mips/reloc.h
>> ++++ b/arch/mips/reloc.h
>> +@@ -86,3 +86,4 @@ static void do_arch_relocs(struct dso *this, struct dso *head)
>> +
>> + #define NEED_ARCH_RELOCS 1
>> + #define DYNAMIC_IS_RO 1
>> ++#define ARCH_SYM_REJECT_UND(s) (!((s)->st_other & STO_MIPS_PLT))
>> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
>> +index a08300d..55124ff 100644
>> +--- a/src/ldso/dynlink.c
>> ++++ b/src/ldso/dynlink.c
>> +@@ -233,6 +233,10 @@ static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
>> + #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
>> + #define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
>> +
>> ++#ifndef ARCH_SYM_REJECT_UND
>> ++#define ARCH_SYM_REJECT_UND(s) 0
>> ++#endif
>> ++
>> + static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
>> + {
>> + uint32_t h = 0, gh = 0;
>> +@@ -249,7 +253,8 @@ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
>> + }
>> + if (!sym) continue;
>> + if (!sym->st_shndx)
>> +- if (need_def || (sym->st_info&0xf) == STT_TLS)
>> ++ if (need_def || (sym->st_info&0xf) == STT_TLS
>> ++ || ARCH_SYM_REJECT_UND(sym))
>> + continue;
>> + if (!sym->st_value)
>> + if ((sym->st_info&0xf) != STT_TLS)
>> +--
>> +cgit v0.9.0.3-65-g4555
>> diff --git a/patches/musl/1.1.3/0001-fix_linker_regression.patch b/patches/musl/1.1.3/0001-fix_linker_regression.patch
>> new file mode 100644
>> index 0000000..801cb00
>> --- /dev/null
>> +++ b/patches/musl/1.1.3/0001-fix_linker_regression.patch
>> @@ -0,0 +1,64 @@
>> +From 9a4ad02214a859e93d2c980e4535378a6a74e3a6 Mon Sep 17 00:00:00 2001
>> +From: Rich Felker <dalias@aerifal.cx>
>> +Date: Mon, 30 Jun 2014 01:52:54 +0000
>> +Subject: fix regression in dynamic linker error reporting
>> +
>> +due to a mistake when refactoring the error printing for the dynamic
>> +linker (commit 7c73cacd09a51a87484db5689864743e4984a84d), all messages
>> +were suppressed and replaced by blank lines.
>> +---
>> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
>> +index bc4f2f6..a08300d 100644
>> +--- a/src/ldso/dynlink.c
>> ++++ b/src/ldso/dynlink.c
>> +@@ -290,8 +290,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + if (!astype) continue;
>> + type = remap_rel(astype);
>> + if (!type) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: unsupported relocation type %d",
>> ++ error("Error relocating %s: unsupported relocation type %d",
>> + dso->name, astype);
>> + continue;
>> + }
>> +@@ -304,8 +303,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + def = find_sym(ctx, name, type==REL_PLT);
>> + if (!def.sym && (sym->st_shndx != SHN_UNDEF
>> + || sym->st_info>>4 != STB_WEAK)) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: %s: symbol not found",
>> ++ error("Error relocating %s: %s: symbol not found",
>> + dso->name, name);
>> + continue;
>> + }
>> +@@ -366,7 +364,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + if (stride<3) addend = reloc_addr[1];
>> + if (runtime && def.dso->tls_id >= static_tls_cnt) {
>> + struct td_index *new = malloc(sizeof *new);
>> +- if (!new) error(errbuf, sizeof errbuf,
>> ++ if (!new) error(
>> + "Error relocating %s: cannot allocate TLSDESC for %s",
>> + dso->name, sym ? name : "(local)" );
>> + new->next = dso->td_index;
>> +@@ -839,8 +837,7 @@ static void load_deps(struct dso *p)
>> + if (p->dynv[i] != DT_NEEDED) continue;
>> + dep = load_library(p->strings + p->dynv[i+1], p);
>> + if (!dep) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error loading shared library %s: %m (needed by %s)",
>> ++ error("Error loading shared library %s: %m (needed by %s)",
>> + p->strings + p->dynv[i+1], p->name);
>> + continue;
>> + }
>> +@@ -890,8 +887,7 @@ static void reloc_all(struct dso *p)
>> +
>> + if (p->relro_start != p->relro_end &&
>> + mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ) < 0) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: RELRO protection failed: %m",
>> ++ error("Error relocating %s: RELRO protection failed: %m",
>> + p->name);
>> + }
>> +
>> +--
>> +cgit v0.9.0.3-65-g4555
>> diff --git a/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch b/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
>> new file mode 100644
>> index 0000000..4891b4f
>> --- /dev/null
>> +++ b/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
>> @@ -0,0 +1,88 @@
>> +From 2d8cc92a7cb4a3256ed07d86843388ffd8a882b1 Mon Sep 17 00:00:00 2001
>> +From: Rich Felker <dalias@aerifal.cx>
>> +Date: Mon, 30 Jun 2014 05:18:14 +0000
>> +Subject: fix regression in mips dynamic linker
>> +
>> +this issue caused the address of functions in shared libraries to
>> +resolve to their PLT thunks in the main program rather than their
>> +correct addresses. it was observed causing crashes, though the
>> +mechanism of the crash was not thoroughly investigated. since the
>> +issue is very subtle, it calls for some explanation:
>> +
>> +on all well-behaved archs, GOT entries that belong to the PLT use a
>> +special relocation type, typically called JMP_SLOT, so that the
>> +dynamic linker can avoid having the jump destinations for the PLT
>> +resolve to PLT thunks themselves (they also provide a definition for
>> +the symbol, which must be used whenever the address of the function is
>> +taken so that all DSOs see the same address).
>> +
>> +however, the traditional mips PIC ABI lacked such a JMP_SLOT
>> +relocation type, presumably because, due to the way PIC works, the
>> +address of the PLT thunk was never needed and could always be ignored.
>> +
>> +prior to commit adf94c19666e687a728bbf398f9a88ea4ea19996, the mips
>> +version of reloc.h contained a hack that caused all symbol lookups to
>> +be treated like JMP_SLOT, inhibiting undefined symbols from ever being
>> +used to resolve symbolic relocations. this hack goes all the way back
>> +to commit babf820180368f00742ec65b2050a82380d7c542, when the mips
>> +dynamic linker was first made usable.
>> +
>> +during the recent refactoring to eliminate arch-specific relocation
>> +processing (commit adf94c19666e687a728bbf398f9a88ea4ea19996), this
>> +hack was overlooked and no equivalent functionality was provided in
>> +the new code.
>> +
>> +fixing the problem is not as simple as adding back an equivalent hack,
>> +since there is now also a "non-PIC ABI" that can be used for the main
>> +executable, which actually does use a PLT. the closest thing to
>> +official documentation I could find for this ABI is nonpic.txt,
>> +attached to Message-ID: 20080701202236.GA1534@caradoc.them.org, which
>> +can be found in the gcc mailing list archives and elsewhere. per this
>> +document, undefined symbols corresponding to PLT thunks have the
>> +STO_MIPS_PLT bit set in the symbol's st_other field. thus, I have
>> +added an arch-specific rule for mips, applied at the find_sym level
>> +rather than the relocation level, to reject undefined symbols with the
>> +STO_MIPS_PLT bit clear.
>> +
>> +the previous hack of treating all mips relocations as JMP_SLOT-like,
>> +rather than rejecting the unwanted symbols in find_sym, probably also
>> +caused dlsym to wrongly return PLT thunks in place of the correct
>> +address of a function under at least some conditions. this should now
>> +be fixed, at least for global-scope symbol lookups.
>> +---
>> +diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
>> +index 91fa097..4b81d32 100644
>> +--- a/arch/mips/reloc.h
>> ++++ b/arch/mips/reloc.h
>> +@@ -86,3 +86,4 @@ static void do_arch_relocs(struct dso *this, struct dso *head)
>> +
>> + #define NEED_ARCH_RELOCS 1
>> + #define DYNAMIC_IS_RO 1
>> ++#define ARCH_SYM_REJECT_UND(s) (!((s)->st_other & STO_MIPS_PLT))
>> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
>> +index a08300d..55124ff 100644
>> +--- a/src/ldso/dynlink.c
>> ++++ b/src/ldso/dynlink.c
>> +@@ -233,6 +233,10 @@ static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
>> + #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
>> + #define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
>> +
>> ++#ifndef ARCH_SYM_REJECT_UND
>> ++#define ARCH_SYM_REJECT_UND(s) 0
>> ++#endif
>> ++
>> + static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
>> + {
>> + uint32_t h = 0, gh = 0;
>> +@@ -249,7 +253,8 @@ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
>> + }
>> + if (!sym) continue;
>> + if (!sym->st_shndx)
>> +- if (need_def || (sym->st_info&0xf) == STT_TLS)
>> ++ if (need_def || (sym->st_info&0xf) == STT_TLS
>> ++ || ARCH_SYM_REJECT_UND(sym))
>> + continue;
>> + if (!sym->st_value)
>> + if ((sym->st_info&0xf) != STT_TLS)
>> +--
>> +cgit v0.9.0.3-65-g4555
>> diff --git a/scripts/build/arch/arm.sh b/scripts/build/arch/arm.sh
>> index 430bdde..5f6ce2f 100644
>> --- a/scripts/build/arch/arm.sh
>> +++ b/scripts/build/arch/arm.sh
>> @@ -17,6 +17,7 @@ CT_DoArchTupleValues() {
>> case "${CT_LIBC},${CT_ARCH_ARM_EABI}" in
>> *glibc,y) CT_TARGET_SYS=gnueabi;;
>> uClibc,y) CT_TARGET_SYS=uclibcgnueabi;;
>> + musl,y) CT_TARGET_SYS=musleabi;;
>> *,y) CT_TARGET_SYS=eabi;;
>> esac
>>
>> diff --git a/scripts/build/libc/musl.sh b/scripts/build/libc/musl.sh
>> new file mode 100644
>> index 0000000..536267c
>> --- /dev/null
>> +++ b/scripts/build/libc/musl.sh
>> @@ -0,0 +1,128 @@
>> +# This file adds functions to build the musl C library
>> +# Copyright 2013 Timo Teräs
>> +# Licensed under the GPL v2. See COPYING in the root of this package
>> +
>> +do_libc_get() {
>> + local libc_src
>> +
>> + libc_src="http://www.musl-libc.org/releases"
>> +
>> + if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
>> + CT_GetCustom "musl" "${CT_LIBC_VERSION}" \
>> + "${CT_LIBC_MUSL_CUSTOM_LOCATION}"
>> + else # ! custom location
>> + CT_GetFile "musl-${CT_LIBC_VERSION}" "${libc_src}"
>> + fi # ! custom location
>> +}
>> +
>> +do_libc_extract() {
>> + # If using custom directory location, nothing to do.
>> + if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
>> + # Abort if the custom directory is not found.
>> + if ! [ -d "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" ]; then
>> + CT_Abort "Directory not found: ${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}"
>> + fi
>> +
>> + return 0
>> + fi
>> +
>> + CT_Extract "musl-${CT_LIBC_VERSION}"
>> + CT_Patch "musl" "${CT_LIBC_VERSION}"
>> +}
>> +
>> +do_libc_check_config() {
>> + :
>> +}
>> +
>> +do_libc_configure() {
>> + CT_DoLog EXTRA "Configuring C library"
>> + local -a extra_cflags
>> +
>> + # From buildroot:
>> + # gcc constant folding bug with weak aliases workaround
>> + # See http://www.openwall.com/lists/musl/2014/05/15/1
>> + if [ "${CT_CC_GCC_4_9_or_later}" = "y" ]; then
>> + extra_cflags+=("-fno-toplevel-reorder")
>> + fi
>> +
>> + # NOTE: musl handles the build/host/target a little bit differently
>> + # then one would expect:
>> + # build : not used
>> + # host : the machine building musl
>> + # target : the machine musl runs on
>> + CT_DoExecLog CFG \
>> + CFLAGS="${extra_cflags[@]}" \
>> + CROSS_COMPILE="${CT_TARGET}-" \
>> + ./configure \
>> + --host="${CT_TARGET}" \
>> + --target="${CT_TARGET}" \
>> + --prefix="/usr" \
>> + --disable-gcc-wrapper
>> +}
>> +
>> +do_get_arch() {
>> + local ARCH=""
>> +
>> + # musl can be installed without gcc if arch is known
>> + case "${CT_TARGET}" in
>> + arm*) ARCH=arm ;;
>> + i?86*) ARCH=i386 ;;
>> + x86_64*) ARCH=x86_64 ;;
>> + mips-*|mipsel-*) ARCH=mips ;;
>> + microblaze-*) ARCH=microblaze ;;
>> + powerpc-*) ARCH=powerpc ;;
>> + sh-*|sh[34]-*) ARCH=sh ;;
>> + x32-*) ARCH=x32 ;;
>> + *) ARCH="" ;;
>> + esac
>> +
>> + echo "${ARCH}"
>> +}
>> +
>> +do_libc_start_files() {
>> + #local ARCH="$(do_get_arch)"
>> + CT_DoStep INFO "Installing C library headers"
>> +
>> + # Simply copy files until musl has the ability to build out-of-tree
>> + CT_DoLog EXTRA "Copying sources to build directory"
>> + CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
>> + "${CT_BUILD_DIR}/build-libc-headers"
>> + cd "${CT_BUILD_DIR}/build-libc-headers"
>> +
>> + do_libc_configure
>> +
>> + CT_DoLog EXTRA "Installing headers"
>> + #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" install-headers
>> + CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install-headers
>> +
>> + #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" \
>> + CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" \
>> + crt/crt1.o crt/crti.o crt/crtn.o
>> + CT_DoExecLog ALL cp -av crt/crt*.o "${CT_SYSROOT_DIR}/usr/lib"
>> + CT_DoExecLog ALL ${CT_TARGET}-gcc -nostdlib \
>> + -nostartfiles -shared -x c /dev/null -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
>> + CT_EndStep
>> +}
>> +
>> +do_libc() {
>> + #local ARCH="$(do_get_arch)"
>> + CT_DoStep INFO "Installing C library"
>> +
>> + # Simply copy files until musl has the ability to build out-of-tree
>> + CT_DoLog EXTRA "Copying sources to build directory"
>> + CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
>> + "${CT_BUILD_DIR}/build-libc"
>> + cd "${CT_BUILD_DIR}/build-libc"
>> +
>> + do_libc_configure
>> +
>> + CT_DoLog EXTRA "Building C library"
>> + #CT_DoExecLog ALL make ARCH="${ARCH}" ${JOBSFLAGS}
>> + CT_DoExecLog ALL make ${JOBSFLAGS}
>> +
>> + CT_DoLog EXTRA "Installing C library"
>> + #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" install
>> + CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install
>> +
>> + CT_EndStep
>> +}
>> diff --git a/scripts/functions b/scripts/functions
>> index 2e4d4fa..eae3b95 100644
>> --- a/scripts/functions
>> +++ b/scripts/functions
>> @@ -1182,6 +1182,7 @@ CT_DoBuildTargetTuple() {
>> case "${CT_LIBC}" in
>> *glibc) CT_TARGET_SYS=gnu;;
>> uClibc) CT_TARGET_SYS=uclibc;;
>> + musl) CT_TARGET_SYS=musl;;
>> *) CT_TARGET_SYS=elf;;
>> esac
>>
>> --
>> 2.0.1
>>
>
> --
> .-----------------.--------------------.------------------.--------------------.
> | Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
> | +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ |
> | +33 223 225 172 `------------.-------: X AGAINST | \e/ There is no |
> | http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. |
> '------------------------------^-------^------------------^--------------------'
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