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This patch adds initial support for musl-libc.
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},${CT_ARCH_ARM_EABI}" in
*glibc,y) CT_TARGET_SYS=gnueabi;;
uClibc,y) CT_TARGET_SYS=uclibcgnueabi;;
+ musl,y) CT_TARGET_SYS=musleabi;;
*,y) CT_TARGET_SYS=eabi;;
esac
diff --git a/scripts/build/libc/musl.sh b/scripts/build/libc/musl.sh
new file mode 100644
index 0000000..536267c
--- /dev/null
+++ b/scripts/build/libc/musl.sh
@@ -0,0 +1,128 @@
+# This file adds functions to build the musl C library
+# Copyright 2013 Timo TerÃÂs
+# Licensed under the GPL v2. See COPYING in the root of this package
+
+do_libc_get() {
+ local libc_src
+
+ libc_src="http://www.musl-libc.org/releases";
+
+ if [ "${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
--
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