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[PATCH v3 1/2] binutils, ld: work with --disable-libctf
- From: Nick Alcock <nick dot alcock at oracle dot com>
- To: binutils at sourceware dot org, gdb-patches at sourceware dot org
- Cc: Nick Alcock <nick dot alcock at oracle dot com>
- Date: Wed, 16 Oct 2019 20:09:47 +0100
- Subject: [PATCH v3 1/2] binutils, ld: work with --disable-libctf
This unfortunately means conditionalizing out all the libctf code, but
the result is not too unbearably ugly, if a bit repetitive. I have
stubbed out code in the !ENABLE_LIBCTF path to avoid extra redundant
ifdefs where it seems that might be helpful. (The stubs are not too
disruptive, but I've tried to keep them on one line where possible to
avoid filling up the screen with stubs that nobody would care about.
If this is too much of a coding style violation I can change it.)
Changes since v2: use GCC_ENABLE rather than repeating all the
AC_ARG_ENABLE stuff over and over again.
ld/
* configure.ac [--enable-libctf]: New, default yes.
Set ENABLE_LIBCTF accordingly.
* Makefile.am [!ENABLE_LIBCTF]: Empty LIBCTF.
* configure: Regenerate.
* config.in: Regenerate.
* Makefile.in: Regenerate.
* aclocal.m4: Regenerate.
* ldlang.c (ctf_output): Conditionalize on ENABLE_LIBCTF.
(ldlang_open_ctf): Likewise.
(lang_merge_ctf): Likewise.
(ldlang_ctf_apply_strsym): Likewise.
(lang_write_ctf): Likewise.
(ldlang_write_ctf_late): Likewise.
(ldlang_open_ctf) [!ENABLE_LIBCTF]: Warn about the presence of CTF
sections.
(lang_merge_ctf) [!ENABLE_LIBCTF]: New stub.
(ldlang_ctf_apply_strsym) [!ENABLE_LIBCTF]: Likewise.
(lang_write_ctf) [!ENABLE_LIBCTF]: Likewise.
(ldlang_write_ctf_late) [!ENABLE_LIBCTF]: Likewise.
* ldelfgen.c (ldelf_emit_ctf_early): Conditionalize on
ENABLE_LIBCTF.
(struct ctf_strsym_iter_cb_arg): Likewise.
(ldelf_ctf_strtab_iter_cb): Likewise.
(ldelf_ctf_symbols_iter_cb): Likewise.
(ldelf_examine_strtab_for_ctf): Likewise.
(ldelf_emit_ctf_early) [!ENABLE_LIBCTF]: New stub.
(ldelf_examine_strtab_for_ctf) [!ENABLE_LIBCTF]: New stub.
binutils/
* configure.ac [--enable-libctf]: New, default yes.
Set ENABLE_LIBCTF accordingly.
* Makefile.am [!ENABLE_LIBCTF]: Empty LIBCTF and LIBCTF_NOBFD.
* configure: Regenerate.
* config.in: Regenerate.
* Makefile.in: Regenerate.
* aclocal.m4: Regenerate.
* objdump.c (usage): Conditionalize portions on ENABLE_LIBCTF.
(option_values): Likewise.
(long_options): Likewise.
(main): Likewise.
(dump_ctf_indent_lines): Conditionalize out when !ENABLE_LIBCTF.
(make_ctfsect): Likewise.
(dump_ctf_archive_member): Likewise.
(dump_ctf) [ENABLE_LIBCTF]: Likewise.
(dump_ctf) [!ENABLE_LIBCTF]: New empty stub.
* readelf.c (options): Conditionalize portions on ENABLE_LIBCTF.
(usage): Likewise.
(process_section_contents): Likewise.
(shdr_to_ctf_sect): Conditionalize out when !ENABLE_LIBCTF.
(dump_ctf_indent_lines): Likewise.
(dump_section_as_ctf) [ENABLE_LIBCTF]: Likewise.
---
binutils/Makefile.am | 5 +++++
binutils/Makefile.in | 9 +++++++--
binutils/aclocal.m4 | 1 +
binutils/config.in | 3 +++
binutils/configure | 39 +++++++++++++++++++++++++++++++++++--
binutils/configure.ac | 6 ++++++
binutils/doc/Makefile.in | 1 +
binutils/objdump.c | 27 +++++++++++++++++++++++---
binutils/readelf.c | 8 ++++++++
ld/Makefile.am | 4 ++++
ld/Makefile.in | 5 ++++-
ld/aclocal.m4 | 1 +
ld/config.in | 3 +++
ld/configure | 42 ++++++++++++++++++++++++++++++++++++++--
ld/configure.ac | 9 +++++++++
ld/ldelfgen.c | 14 ++++++++++++++
ld/ldlang.c | 35 +++++++++++++++++++++++++++++++++
17 files changed, 202 insertions(+), 10 deletions(-)
diff --git a/binutils/Makefile.am b/binutils/Makefile.am
index 4c90a0bef3..40e4e6d35d 100644
--- a/binutils/Makefile.am
+++ b/binutils/Makefile.am
@@ -162,8 +162,13 @@ BFDLIB = ../bfd/libbfd.la
OPCODES = ../opcodes/libopcodes.la
+if ENABLE_LIBCTF
LIBCTF = ../libctf/libctf.la
LIBCTF_NOBFD = ../libctf/libctf-nobfd.la
+else
+LIBCTF =
+LIBCTF_NOBFD =
+endif
LIBIBERTY = ../libiberty/libiberty.a
diff --git a/binutils/Makefile.in b/binutils/Makefile.in
index be96d2db0e..d8da0feda0 100644
--- a/binutils/Makefile.in
+++ b/binutils/Makefile.in
@@ -122,6 +122,7 @@ ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/../bfd/acinclude.m4 \
$(top_srcdir)/../bfd/warning.m4 $(top_srcdir)/../config/acx.m4 \
$(top_srcdir)/../config/depstand.m4 \
+ $(top_srcdir)/../config/enable.m4 \
$(top_srcdir)/../config/gettext-sister.m4 \
$(top_srcdir)/../config/iconv.m4 \
$(top_srcdir)/../config/largefile.m4 \
@@ -220,6 +221,7 @@ objcopy_LDADD = $(LDADD)
am_objdump_OBJECTS = objdump.$(OBJEXT) dwarf.$(OBJEXT) prdbg.$(OBJEXT) \
$(am__objects_3) $(am__objects_1) $(am__objects_2)
objdump_OBJECTS = $(am_objdump_OBJECTS)
+@ENABLE_LIBCTF_TRUE@am__DEPENDENCIES_2 = ../libctf/libctf.la
am_ranlib_OBJECTS = ar.$(OBJEXT) is-ranlib.$(OBJEXT) arparse.$(OBJEXT) \
arlex.$(OBJEXT) arsup.$(OBJEXT) rename.$(OBJEXT) \
binemul.$(OBJEXT) emul_$(EMULATION).$(OBJEXT) $(am__objects_1)
@@ -227,6 +229,7 @@ ranlib_OBJECTS = $(am_ranlib_OBJECTS)
am_readelf_OBJECTS = readelf.$(OBJEXT) version.$(OBJEXT) \
unwind-ia64.$(OBJEXT) dwarf.$(OBJEXT) $(am__objects_2)
readelf_OBJECTS = $(am_readelf_OBJECTS)
+@ENABLE_LIBCTF_TRUE@am__DEPENDENCIES_3 = ../libctf/libctf-nobfd.la
am_size_OBJECTS = size.$(OBJEXT) $(am__objects_1)
size_OBJECTS = $(am_size_OBJECTS)
size_LDADD = $(LDADD)
@@ -655,8 +658,10 @@ BULIBS = bucomm.c version.c filemode.c
ELFLIBS = elfcomm.c
BFDLIB = ../bfd/libbfd.la
OPCODES = ../opcodes/libopcodes.la
-LIBCTF = ../libctf/libctf.la
-LIBCTF_NOBFD = ../libctf/libctf-nobfd.la
+@ENABLE_LIBCTF_FALSE@LIBCTF =
+@ENABLE_LIBCTF_TRUE@LIBCTF = ../libctf/libctf.la
+@ENABLE_LIBCTF_FALSE@LIBCTF_NOBFD =
+@ENABLE_LIBCTF_TRUE@LIBCTF_NOBFD = ../libctf/libctf-nobfd.la
LIBIBERTY = ../libiberty/libiberty.a
POTFILES = $(CFILES) $(DEBUG_SRCS) $(HFILES)
EXPECT = expect
diff --git a/binutils/aclocal.m4 b/binutils/aclocal.m4
index 4fa32fffd8..8bf2e9e242 100644
--- a/binutils/aclocal.m4
+++ b/binutils/aclocal.m4
@@ -1189,6 +1189,7 @@ m4_include([../bfd/acinclude.m4])
m4_include([../bfd/warning.m4])
m4_include([../config/acx.m4])
m4_include([../config/depstand.m4])
+m4_include([../config/enable.m4])
m4_include([../config/gettext-sister.m4])
m4_include([../config/iconv.m4])
m4_include([../config/largefile.m4])
diff --git a/binutils/config.in b/binutils/config.in
index 72ead4eb61..a3bb053bc6 100644
--- a/binutils/config.in
+++ b/binutils/config.in
@@ -21,6 +21,9 @@
/* Should strings use -a behavior by default? */
#undef DEFAULT_STRINGS_ALL
+/* Handle .ctf type-info sections */
+#undef ENABLE_LIBCTF
+
/* Define to 1 if translation of program messages to the user's native
language is requested. */
#undef ENABLE_NLS
diff --git a/binutils/configure b/binutils/configure
index 50f8d5b1a2..dba33d312f 100755
--- a/binutils/configure
+++ b/binutils/configure
@@ -684,6 +684,8 @@ WARN_WRITE_STRINGS
NO_WERROR
WARN_CFLAGS_FOR_BUILD
WARN_CFLAGS
+ENABLE_LIBCTF_FALSE
+ENABLE_LIBCTF_TRUE
OTOOL64
OTOOL
LIPO
@@ -813,6 +815,7 @@ enable_largefile
enable_targets
enable_deterministic_archives
enable_default_strings_all
+enable_libctf
enable_werror
enable_build_warnings
enable_nls
@@ -1469,6 +1472,7 @@ Optional Features:
ar and ranlib default to -D behavior
--disable-default-strings-all
strings defaults to --data behavior
+ --enable-libctf Handle .ctf type-info sections [default=yes]
--enable-werror treat compile warnings as errors
--enable-build-warnings enable build-time compiler warnings
--disable-nls do not use Native Language Support
@@ -11523,7 +11527,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11526 "configure"
+#line 11530 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -11629,7 +11633,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11632 "configure"
+#line 11636 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -12241,6 +12245,33 @@ cat >>confdefs.h <<_ACEOF
_ACEOF
+ # Check whether --enable-libctf was given.
+if test "${enable_libctf+set}" = set; then :
+ enableval=$enable_libctf;
+ case "$enableval" in
+ yes|no) ;;
+ *) as_fn_error $? "Argument to enable/disable libctf must be yes or no" "$LINENO" 5 ;;
+ esac
+
+else
+ enable_libctf=yes
+fi
+
+
+if test "${enable_libctf}" = yes; then
+
+$as_echo "#define ENABLE_LIBCTF 1" >>confdefs.h
+
+fi
+ if test "${enable_libctf}" = yes; then
+ ENABLE_LIBCTF_TRUE=
+ ENABLE_LIBCTF_FALSE='#'
+else
+ ENABLE_LIBCTF_TRUE='#'
+ ENABLE_LIBCTF_FALSE=
+fi
+
+
# Set the 'development' global.
. $srcdir/../bfd/development.sh
@@ -15308,6 +15339,10 @@ else
am__EXEEXT_FALSE=
fi
+if test -z "${ENABLE_LIBCTF_TRUE}" && test -z "${ENABLE_LIBCTF_FALSE}"; then
+ as_fn_error $? "conditional \"ENABLE_LIBCTF\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
as_fn_error $? "conditional \"MAINTAINER_MODE\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
diff --git a/binutils/configure.ac b/binutils/configure.ac
index b1cd4552f2..a043bc3be4 100644
--- a/binutils/configure.ac
+++ b/binutils/configure.ac
@@ -66,6 +66,12 @@ fi], [default_strings_all=1])
AC_DEFINE_UNQUOTED(DEFAULT_STRINGS_ALL, $default_strings_all,
[Should strings use -a behavior by default?])
+GCC_ENABLE([libctf], [yes], [], [Handle .ctf type-info sections])
+if test "${enable_libctf}" = yes; then
+ AC_DEFINE(ENABLE_LIBCTF, 1, [Handle .ctf type-info sections])
+fi
+AM_CONDITIONAL(ENABLE_LIBCTF, test "${enable_libctf}" = yes)
+
AM_BINUTILS_WARNINGS
AC_CONFIG_HEADERS(config.h:config.in)
diff --git a/binutils/doc/Makefile.in b/binutils/doc/Makefile.in
index 3023c7bdd3..361dff8ab1 100644
--- a/binutils/doc/Makefile.in
+++ b/binutils/doc/Makefile.in
@@ -111,6 +111,7 @@ ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/../bfd/acinclude.m4 \
$(top_srcdir)/../bfd/warning.m4 $(top_srcdir)/../config/acx.m4 \
$(top_srcdir)/../config/depstand.m4 \
+ $(top_srcdir)/../config/enable.m4 \
$(top_srcdir)/../config/gettext-sister.m4 \
$(top_srcdir)/../config/iconv.m4 \
$(top_srcdir)/../config/largefile.m4 \
diff --git a/binutils/objdump.c b/binutils/objdump.c
index a2a0645685..d3da551e60 100644
--- a/binutils/objdump.c
+++ b/binutils/objdump.c
@@ -229,7 +229,13 @@ usage (FILE *stream, int status)
=gdb_index,=trace_info,=trace_abbrev,=trace_aranges,\n\
=addr,=cu_index,=links,=follow-links]\n\
Display DWARF info in the file\n\
+"));
+#ifdef ENABLE_LIBCTF
+ fprintf (stream, _("\
--ctf=SECTION Display CTF info from SECTION\n\
+"));
+#endif
+ fprintf (stream, _("\
-t, --syms Display the contents of the symbol table(s)\n\
-T, --dynamic-syms Display the contents of the dynamic symbol table\n\
-r, --reloc Display the relocation entries in the file\n\
@@ -278,8 +284,11 @@ usage (FILE *stream, int status)
--dwarf-start=N Display DIEs starting with N, at the same depth\n\
or deeper\n\
--dwarf-check Make additional dwarf internal consistency checks.\
- \n\
+ \n"));
+#ifdef ENABLE_LIBCTF
+ fprintf (stream, _("\
--ctf-parent=SECTION Use SECTION as the CTF parent\n\n"));
+#endif
list_supported_targets (program_name, stream);
list_supported_architectures (program_name, stream);
@@ -315,9 +324,11 @@ enum option_values
OPTION_RECURSE_LIMIT,
OPTION_NO_RECURSE_LIMIT,
OPTION_INLINES,
- OPTION_SOURCE_COMMENT,
- OPTION_CTF,
+ OPTION_SOURCE_COMMENT
+#ifdef ENABLE_LIBCTF
+ ,OPTION_CTF,
OPTION_CTF_PARENT
+#endif
};
static struct option long_options[]=
@@ -361,8 +372,10 @@ static struct option long_options[]=
{"special-syms", no_argument, &dump_special_syms, 1},
{"include", required_argument, NULL, 'I'},
{"dwarf", optional_argument, NULL, OPTION_DWARF},
+#ifdef ENABLE_LIBCTF
{"ctf", required_argument, NULL, OPTION_CTF},
{"ctf-parent", required_argument, NULL, OPTION_CTF_PARENT},
+#endif
{"stabs", no_argument, NULL, 'G'},
{"start-address", required_argument, NULL, OPTION_START_ADDRESS},
{"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
@@ -3245,6 +3258,7 @@ dump_bfd_header (bfd *abfd)
}
+#ifdef ENABLE_LIBCTF
/* Formatting callback function passed to ctf_dump. Returns either the pointer
it is passed, or a pointer to newly-allocated storage, in which case
dump_ctf() will free it when it no longer needs it. */
@@ -3386,6 +3400,11 @@ dump_ctf (bfd *abfd, const char *sect_name, const char *parent_name)
free (parentdata);
free (ctfdata);
}
+#else
+static void
+dump_ctf (bfd *abfd ATTRIBUTE_UNUSED, const char *sect_name ATTRIBUTE_UNUSED,
+ const char *parent_name ATTRIBUTE_UNUSED) {}
+#endif
static void
@@ -4548,6 +4567,7 @@ main (int argc, char **argv)
case OPTION_DWARF_CHECK:
dwarf_check = TRUE;
break;
+#ifdef ENABLE_LIBCTF
case OPTION_CTF:
dump_ctf_section_info = TRUE;
dump_ctf_section_name = xstrdup (optarg);
@@ -4556,6 +4576,7 @@ main (int argc, char **argv)
case OPTION_CTF_PARENT:
dump_ctf_parent_name = xstrdup (optarg);
break;
+#endif
case 'G':
dump_stab_section_info = TRUE;
seenflag = TRUE;
diff --git a/binutils/readelf.c b/binutils/readelf.c
index de77237e0e..9bc2ff913e 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -4465,11 +4465,13 @@ static struct option options[] =
{"dwarf-start", required_argument, 0, OPTION_DWARF_START},
{"dwarf-check", no_argument, 0, OPTION_DWARF_CHECK},
+#ifdef ENABLE_LIBCTF
{"ctf", required_argument, 0, OPTION_CTF_DUMP},
{"ctf-symbols", required_argument, 0, OPTION_CTF_SYMBOLS},
{"ctf-strings", required_argument, 0, OPTION_CTF_STRINGS},
{"ctf-parent", required_argument, 0, OPTION_CTF_PARENT},
+#endif
{"version", no_argument, 0, 'v'},
{"wide", no_argument, 0, 'W'},
@@ -4520,6 +4522,7 @@ usage (FILE * stream)
--dwarf-depth=N Do not display DIEs at depth N or greater\n\
--dwarf-start=N Display DIEs starting with N, at the same depth\n\
or deeper\n"));
+#ifdef ENABLE_LIBCTF
fprintf (stream, _("\
--ctf=<number|name> Display CTF info from section <number|name>\n\
--ctf-parent=<number|name>\n\
@@ -4528,6 +4531,7 @@ usage (FILE * stream)
Use section <number|name> as the CTF external symtab\n\n\
--ctf-strings=<number|name>\n\
Use section <number|name> as the CTF external strtab\n\n"));
+#endif
#ifdef SUPPORT_DISASSEMBLY
fprintf (stream, _("\
@@ -13891,6 +13895,7 @@ dump_section_as_bytes (Elf_Internal_Shdr * section,
return TRUE;
}
+#ifdef ENABLE_LIBCTF
static ctf_sect_t *
shdr_to_ctf_sect (ctf_sect_t *buf, Elf_Internal_Shdr *shdr, Filedata *filedata)
{
@@ -14051,6 +14056,7 @@ dump_section_as_ctf (Elf_Internal_Shdr * section, Filedata * filedata)
free (strdata);
return ret;
}
+#endif
static bfd_boolean
load_specific_debug_section (enum dwarf_section_display_enum debug,
@@ -14390,11 +14396,13 @@ process_section_contents (Filedata * filedata)
res = FALSE;
}
+#ifdef ENABLE_LIBCTF
if (dump & CTF_DUMP)
{
if (! dump_section_as_ctf (section, filedata))
res = FALSE;
}
+#endif
}
/* Check to see if the user requested a
diff --git a/ld/Makefile.am b/ld/Makefile.am
index 2790838994..74cff8c1a6 100644
--- a/ld/Makefile.am
+++ b/ld/Makefile.am
@@ -157,7 +157,11 @@ AM_CPPFLAGS = -I. -I$(srcdir) -I../bfd -I$(BFDDIR) -I$(INCDIR) @zlibinc@ \
BFDLIB = ../bfd/libbfd.la
LIBIBERTY = ../libiberty/libiberty.a
+if ENABLE_LIBCTF
LIBCTF = ../libctf/libctf.la
+else
+LIBCTF =
+endif
# These all start with e so 'make clean' can find them.
ALL_EMULATION_SOURCES = \
diff --git a/ld/Makefile.in b/ld/Makefile.in
index 395bef155c..d0df0ec47d 100644
--- a/ld/Makefile.in
+++ b/ld/Makefile.in
@@ -113,6 +113,7 @@ ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/../bfd/acinclude.m4 \
$(top_srcdir)/../bfd/warning.m4 $(top_srcdir)/../config/acx.m4 \
$(top_srcdir)/../config/depstand.m4 \
+ $(top_srcdir)/../config/enable.m4 \
$(top_srcdir)/../config/gettext-sister.m4 \
$(top_srcdir)/../config/largefile.m4 \
$(top_srcdir)/../config/lcmessage.m4 \
@@ -189,6 +190,7 @@ am_ld_new_OBJECTS = ldgram.$(OBJEXT) ldlex-wrapper.$(OBJEXT) \
$(am__objects_1) ldbuildid.$(OBJEXT)
ld_new_OBJECTS = $(am_ld_new_OBJECTS)
am__DEPENDENCIES_1 =
+@ENABLE_LIBCTF_TRUE@am__DEPENDENCIES_2 = ../libctf/libctf.la
AM_V_P = $(am__v_P_@AM_V@)
am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
am__v_P_0 = false
@@ -647,7 +649,8 @@ AM_CPPFLAGS = -I. -I$(srcdir) -I../bfd -I$(BFDDIR) -I$(INCDIR) @zlibinc@ \
BFDLIB = ../bfd/libbfd.la
LIBIBERTY = ../libiberty/libiberty.a
-LIBCTF = ../libctf/libctf.la
+@ENABLE_LIBCTF_FALSE@LIBCTF =
+@ENABLE_LIBCTF_TRUE@LIBCTF = ../libctf/libctf.la
# These all start with e so 'make clean' can find them.
ALL_EMULATION_SOURCES = \
diff --git a/ld/aclocal.m4 b/ld/aclocal.m4
index 7df8bf68f1..f6e87a228a 100644
--- a/ld/aclocal.m4
+++ b/ld/aclocal.m4
@@ -1189,6 +1189,7 @@ m4_include([../bfd/acinclude.m4])
m4_include([../bfd/warning.m4])
m4_include([../config/acx.m4])
m4_include([../config/depstand.m4])
+m4_include([../config/enable.m4])
m4_include([../config/gettext-sister.m4])
m4_include([../config/largefile.m4])
m4_include([../config/lcmessage.m4])
diff --git a/ld/config.in b/ld/config.in
index d93c9b0830..c302b2e250 100644
--- a/ld/config.in
+++ b/ld/config.in
@@ -27,6 +27,9 @@
*/
#undef DEFAULT_NEW_DTAGS
+/* Handle .ctf type-info sections */
+#undef ENABLE_LIBCTF
+
/* Define to 1 if translation of program messages to the user's native
language is requested. */
#undef ENABLE_NLS
diff --git a/ld/configure b/ld/configure
index 2e5e10dbf3..a262d0a0f0 100755
--- a/ld/configure
+++ b/ld/configure
@@ -680,6 +680,8 @@ WARN_WRITE_STRINGS
NO_WERROR
WARN_CFLAGS_FOR_BUILD
WARN_CFLAGS
+ENABLE_LIBCTF_FALSE
+ENABLE_LIBCTF_TRUE
installed_linker
install_as_default
TARGET_SYSTEM_ROOT_DEFINE
@@ -833,6 +835,7 @@ enable_new_dtags
enable_relro
enable_separate_code
enable_default_hash_style
+enable_libctf
enable_werror
enable_build_warnings
enable_nls
@@ -1501,6 +1504,7 @@ Optional Features:
--enable-separate-code enable -z separate-code in ELF linker by default
--enable-default-hash-style={sysv,gnu,both}
use this default hash style
+ --enable-libctf Handle .ctf type-info sections [default=yes]
--enable-werror treat compile warnings as errors
--enable-build-warnings enable build-time compiler warnings
--disable-nls do not use Native Language Support
@@ -12032,7 +12036,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 12035 "configure"
+#line 12039 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -12138,7 +12142,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 12141 "configure"
+#line 12145 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -15915,6 +15919,33 @@ case "${enable_default_hash_style}" in
*) ac_default_emit_gnu_hash=0 ;;
esac
+ # Check whether --enable-libctf was given.
+if test "${enable_libctf+set}" = set; then :
+ enableval=$enable_libctf;
+ case "$enableval" in
+ yes|no) ;;
+ *) as_fn_error $? "Argument to enable/disable libctf must be yes or no" "$LINENO" 5 ;;
+ esac
+
+else
+ enable_libctf=yes
+fi
+
+
+if test "${enable_libctf}" = yes; then
+
+$as_echo "#define ENABLE_LIBCTF 1" >>confdefs.h
+
+fi
+ if test "${enable_libctf}" = yes; then
+ ENABLE_LIBCTF_TRUE=
+ ENABLE_LIBCTF_FALSE='#'
+else
+ ENABLE_LIBCTF_TRUE='#'
+ ENABLE_LIBCTF_FALSE=
+fi
+
+
# Set the 'development' global.
. $srcdir/../bfd/development.sh
@@ -17673,6 +17704,9 @@ else
TESTBFDLIB="../bfd/.libs/libbfd.a"
TESTCTFLIB="../libctf/.libs/libctf.a"
fi
+if test "${enable_libctf}" = no; then
+ TESTCTFLIB=
+fi
@@ -17845,6 +17879,10 @@ if test -z "${am__fastdepCXX_TRUE}" && test -z "${am__fastdepCXX_FALSE}"; then
as_fn_error $? "conditional \"am__fastdepCXX\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
+if test -z "${ENABLE_LIBCTF_TRUE}" && test -z "${ENABLE_LIBCTF_FALSE}"; then
+ as_fn_error $? "conditional \"ENABLE_LIBCTF\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
as_fn_error $? "conditional \"MAINTAINER_MODE\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
diff --git a/ld/configure.ac b/ld/configure.ac
index bdc167769e..0ef93dd9d8 100644
--- a/ld/configure.ac
+++ b/ld/configure.ac
@@ -212,6 +212,12 @@ case "${enable_default_hash_style}" in
*) ac_default_emit_gnu_hash=0 ;;
esac
+GCC_ENABLE([libctf], [yes], [], [Handle .ctf type-info sections])
+if test "${enable_libctf}" = yes; then
+ AC_DEFINE(ENABLE_LIBCTF, 1, [Handle .ctf type-info sections])
+fi
+AM_CONDITIONAL(ENABLE_LIBCTF, test "${enable_libctf}" = yes)
+
AM_BINUTILS_WARNINGS
AM_LC_MESSAGES
@@ -496,6 +502,9 @@ else
TESTBFDLIB="../bfd/.libs/libbfd.a"
TESTCTFLIB="../libctf/.libs/libctf.a"
fi
+if test "${enable_libctf}" = no; then
+ TESTCTFLIB=
+fi
AC_SUBST(TESTBFDLIB)
AC_SUBST(TESTCTFLIB)
diff --git a/ld/ldelfgen.c b/ld/ldelfgen.c
index 682872f9dc..d5de1eb10c 100644
--- a/ld/ldelfgen.c
+++ b/ld/ldelfgen.c
@@ -75,6 +75,7 @@ ldelf_map_segments (bfd_boolean need_layout)
einfo (_("%F%P: looping in map_segments"));
}
+#ifdef ENABLE_LIBCTF
/* We want to emit CTF early if and only if we are not targetting ELF with this
invocation. */
@@ -184,3 +185,16 @@ ldelf_examine_strtab_for_ctf
"cost: %s\n"), ctf_errmsg (ctf_errno (ctf_output)));
}
}
+#else
+extern int ldelf_emit_ctf_early (void)
+{
+ return 0;
+}
+
+extern void ldelf_examine_strtab_for_ctf
+ (struct ctf_file *ctf_output ATTRIBUTE_UNUSED,
+ struct elf_sym_strtab *syms ATTRIBUTE_UNUSED,
+ bfd_size_type symcount ATTRIBUTE_UNUSED,
+ struct elf_strtab_hash *symstrtab ATTRIBUTE_UNUSED)
+{}
+#endif
diff --git a/ld/ldlang.c b/ld/ldlang.c
index df7f659486..ebf90f6f20 100644
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -129,7 +129,9 @@ bfd_boolean delete_output_file_on_failure = FALSE;
struct lang_phdr *lang_phdr_list;
struct lang_nocrossrefs *nocrossref_list;
struct asneeded_minfo **asneeded_list_tail;
+#ifdef ENABLE_LIBCTF
static ctf_file_t *ctf_output;
+#endif
/* Functions that traverse the linker script and might evaluate
DEFINED() need to increment this at the start of the traversal. */
@@ -3605,6 +3607,7 @@ open_input_bfds (lang_statement_union_type *s, enum open_bfd_mode mode)
einfo ("%F");
}
+#ifdef ENABLE_LIBCTF
/* Open the CTF sections in the input files with libctf: if any were opened,
create a fake input file that we'll write the merged CTF data to later
on. */
@@ -3784,6 +3787,38 @@ ldlang_write_ctf_late (void)
lang_write_ctf (1);
}
+#else
+static void
+ldlang_open_ctf (void)
+{
+ LANG_FOR_EACH_INPUT_STATEMENT (file)
+ {
+ asection *sect;
+
+ /* If built without CTF, warn and delete all CTF sections from the output.
+ (The alternative would be to simply concatenate them, which does not
+ yield a valid CTF section.) */
+
+ if ((sect = bfd_get_section_by_name (file->the_bfd, ".ctf")) != NULL)
+ {
+ einfo (_("%P: warning: CTF section in `%pI' not linkable: "
+ "%P was built without support for CTF\n"), file);
+ sect->size = 0;
+ sect->flags |= SEC_EXCLUDE;
+ }
+ }
+}
+
+static void lang_merge_ctf (void) {}
+void
+ldlang_ctf_apply_strsym (struct elf_sym_strtab *syms ATTRIBUTE_UNUSED,
+ bfd_size_type symcount ATTRIBUTE_UNUSED,
+ struct elf_strtab_hash *symstrtab ATTRIBUTE_UNUSED)
+{
+}
+static void lang_write_ctf (int late ATTRIBUTE_UNUSED) {}
+void ldlang_write_ctf_late (void) {}
+#endif
/* Add the supplied name to the symbol table as an undefined reference.
This is a two step process as the symbol table doesn't even exist at
--
2.23.0.239.g28aa4420fd