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Add configure flag to enable gnu hash style by default.

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ld/
	* configure.ac: Add --enable-default-hash-style option.
	* ldmain.c (main): Set link_info.emit_hash to DEFAULT_EMIT_SYSV_HASH.
	Set link_info.emit_gnu_hash to DEFAULT_EMIT_GNU_HASH.
	* configure: Regenerate.
	* config.in: Regenerate.

gold/
	* configure.ac: Add --enable-default-hash-style option.
	* options.h (hash_style): Use DEFAULT_HASH_STYLE as default value.
	* configure: Regenerate.
	* config.in: Regenerate.
This commit is contained in:
Romain Geissler 2017-08-08 07:25:39 +09:30 committed by Alan Modra
parent 8f5e83fb73
commit 2760f24c49
10 changed files with 155 additions and 4 deletions
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8
gold/ChangeLog
View File

@ -1,3 +1,11 @@
2017-08-08 Romain Geissler <romain.geissler@gmail.com>
Alan Modra <amodra@gmail.com>
* configure.ac: Add --enable-default-hash-style option.
* options.h (hash_style): Use DEFAULT_HASH_STYLE as default value.
* configure: Regenerate.
* config.in: Regenerate.
2017-08-03 James Clarke <jrtc27@jrtc27.com>
* options.h (General_options): Set a non-NULL second help string

3
gold/config.in
View File

@ -10,6 +10,9 @@
/* Define if building universal (internal helper macro) */
#undef AC_APPLE_UNIVERSAL_BUILD
/* Set the default --hash-style value */
#undef DEFAULT_HASH_STYLE
/* Define to 1 if you want to enable -z relro in ELF linker by default. */
#undef DEFAULT_LD_Z_RELRO

27
gold/configure vendored
View File

@ -797,6 +797,7 @@ enable_threads
enable_plugins
enable_relro
enable_targets
enable_default_hash_style
with_lib_path
enable_dependency_tracking
enable_nls
@ -1447,6 +1448,8 @@ Optional Features:
--enable-plugins linker plugins
--enable-relro enable -z relro in ELF linker by default
--enable-targets alternative target configurations
--enable-default-hash-style={sysv,gnu,both}
use this default hash style
--disable-dependency-tracking speeds up one-time build
--enable-dependency-tracking do not reject slow dependency extractors
--disable-nls do not use Native Language Support
@ -3410,6 +3413,30 @@ if test -n "$enable_targets"; then
done
fi
# Decide which "--hash-style" to use by default
# Provide a configure time option to override our default.
# Check whether --enable-default-hash-style was given.
if test "${enable_default_hash_style+set}" = set; then :
enableval=$enable_default_hash_style; case "${enable_default_hash_style}" in
sysv | gnu | both) ;;
*) as_fn_error "bad value ${enable_default_hash_style} for enable-default-hash-style option" "$LINENO" 5 ;;
esac
else
case "${target}" in
# Enable gnu hash only on GNU targets, but not mips
mips*-*-*) enable_default_hash_style=sysv ;;
*-*-gnu* | *-*-linux* | *-*-nacl*) enable_default_hash_style=both ;;
*) enable_default_hash_style=sysv ;;
esac
fi
cat >>confdefs.h <<_ACEOF
#define DEFAULT_HASH_STYLE "${enable_default_hash_style}"
_ACEOF
# See which specific instantiations we need.
targetobjs=
all_targets=

20
gold/configure.ac
View File

@ -161,6 +161,26 @@ if test -n "$enable_targets"; then
done
fi
# Decide which "--hash-style" to use by default
# Provide a configure time option to override our default.
AC_ARG_ENABLE([default-hash-style],
AS_HELP_STRING([--enable-default-hash-style={sysv,gnu,both}],
[use this default hash style]),
[case "${enable_default_hash_style}" in
sysv | gnu | both) ;;
*) AC_MSG_ERROR([bad value ${enable_default_hash_style} for enable-default-hash-style option]) ;;
esac],
[case "${target}" in
# Enable gnu hash only on GNU targets, but not mips
mips*-*-*) enable_default_hash_style=sysv ;;
*-*-gnu* | *-*-linux* | *-*-nacl*) enable_default_hash_style=both ;;
*) enable_default_hash_style=sysv ;;
esac])
AC_DEFINE_UNQUOTED([DEFAULT_HASH_STYLE],
["${enable_default_hash_style}"],
[Set the default --hash-style value])
# See which specific instantiations we need.
targetobjs=
all_targets=

2
gold/options.h
View File

@ -925,7 +925,7 @@ class General_options
N_("Min fraction of empty buckets in dynamic hash"),
N_("FRACTION"));
DEFINE_enum(hash_style, options::TWO_DASHES, '\0', "sysv",
DEFINE_enum(hash_style, options::TWO_DASHES, '\0', DEFAULT_HASH_STYLE,
N_("Dynamic hash style"), N_("[sysv,gnu,both]"),
{"sysv", "gnu", "both"});

9
ld/ChangeLog
View File

@ -1,3 +1,12 @@
2017-08-08 Romain Geissler <romain.geissler@gmail.com>
Alan Modra <amodra@gmail.com>
* configure.ac: Add --enable-default-hash-style option.
* ldmain.c (main): Set link_info.emit_hash to DEFAULT_EMIT_SYSV_HASH.
Set link_info.emit_gnu_hash to DEFAULT_EMIT_GNU_HASH.
* configure: Regenerate.
* config.in: Regenerate.
2017-08-08 Alan Modra <amodra@gmail.com>
* testsuite/ld-aarch64/ifunc-1-local.d: Run ld with --hash-style=sysv.

6
ld/config.in
View File

@ -7,6 +7,12 @@
#endif
#define __CONFIG_H__ 1
/* Define to 1 if you want to emit gnu hash in the ELF linker by default. */
#undef DEFAULT_EMIT_GNU_HASH
/* Define to 1 if you want to emit sysv hash in the ELF linker by default. */
#undef DEFAULT_EMIT_SYSV_HASH
/* Define if you want compressed debug sections by default. */
#undef DEFAULT_FLAG_COMPRESS_DEBUG

47
ld/configure vendored
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@ -790,6 +790,7 @@ enable_got
enable_compressed_debug_sections
enable_new_dtags
enable_relro
enable_default_hash_style
enable_werror
enable_build_warnings
enable_nls
@ -1450,6 +1451,8 @@ Optional Features:
compress debug sections by default]
--enable-new-dtags set DT_RUNPATH instead of DT_RPATH by default]
--enable-relro enable -z relro in ELF linker by default
--enable-default-hash-style={sysv,gnu,both}
use this default hash style
--enable-werror treat compile warnings as errors
--enable-build-warnings enable build-time compiler warnings
--disable-nls do not use Native Language Support
@ -11722,7 +11725,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 11725 "configure"
#line 11728 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -11828,7 +11831,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 11831 "configure"
#line 11834 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -15564,6 +15567,34 @@ if test "${enable_relro+set}" = set; then :
esac
fi
# Decide which "--hash-style" to use by default
# Provide a configure time option to override our default.
# Check whether --enable-default-hash-style was given.
if test "${enable_default_hash_style+set}" = set; then :
enableval=$enable_default_hash_style; case "${enable_default_hash_style}" in
sysv | gnu | both) ;;
*) as_fn_error "bad value ${enable_default_hash_style} for enable-default-hash-style option" "$LINENO" 5 ;;
esac
else
case "${target}" in
# Enable gnu hash only on GNU targets, but not mips
mips*-*-*) enable_default_hash_style=sysv ;;
*-*-gnu* | *-*-linux* | *-*-nacl*) enable_default_hash_style=both ;;
*) enable_default_hash_style=sysv ;;
esac
fi
case "${enable_default_hash_style}" in
sysv | both) ac_default_emit_sysv_hash=1 ;;
*) ac_default_emit_sysv_hash=0 ;;
esac
case "${enable_default_hash_style}" in
gnu | both) ac_default_emit_gnu_hash=1 ;;
*) ac_default_emit_gnu_hash=0 ;;
esac
# Set the 'development' global.
. $srcdir/../bfd/development.sh
@ -17228,6 +17259,18 @@ _ACEOF
cat >>confdefs.h <<_ACEOF
#define DEFAULT_EMIT_SYSV_HASH $ac_default_emit_sysv_hash
_ACEOF
cat >>confdefs.h <<_ACEOF
#define DEFAULT_EMIT_GNU_HASH $ac_default_emit_gnu_hash
_ACEOF

34
ld/configure.ac
View File

@ -177,6 +177,32 @@ AC_ARG_ENABLE(relro,
no) ac_default_ld_z_relro=0 ;;
esac])dnl
# Decide which "--hash-style" to use by default
# Provide a configure time option to override our default.
AC_ARG_ENABLE([default-hash-style],
AS_HELP_STRING([--enable-default-hash-style={sysv,gnu,both}],
[use this default hash style]),
[case "${enable_default_hash_style}" in
sysv | gnu | both) ;;
*) AC_MSG_ERROR([bad value ${enable_default_hash_style} for enable-default-hash-style option]) ;;
esac],
[case "${target}" in
# Enable gnu hash only on GNU targets, but not mips
mips*-*-*) enable_default_hash_style=sysv ;;
*-*-gnu* | *-*-linux* | *-*-nacl*) enable_default_hash_style=both ;;
*) enable_default_hash_style=sysv ;;
esac])
case "${enable_default_hash_style}" in
sysv | both) ac_default_emit_sysv_hash=1 ;;
*) ac_default_emit_sysv_hash=0 ;;
esac
case "${enable_default_hash_style}" in
gnu | both) ac_default_emit_gnu_hash=1 ;;
*) ac_default_emit_gnu_hash=0 ;;
esac
AM_BINUTILS_WARNINGS
AM_LC_MESSAGES
@ -408,6 +434,14 @@ AC_DEFINE_UNQUOTED(DEFAULT_LD_Z_RELRO,
$ac_default_ld_z_relro,
[Define to 1 if you want to enable -z relro in ELF linker by default.])
AC_DEFINE_UNQUOTED([DEFAULT_EMIT_SYSV_HASH],
[$ac_default_emit_sysv_hash],
[Define to 1 if you want to emit sysv hash in the ELF linker by default.])
AC_DEFINE_UNQUOTED([DEFAULT_EMIT_GNU_HASH],
[$ac_default_emit_gnu_hash],
[Define to 1 if you want to emit gnu hash in the ELF linker by default.])
AC_SUBST(elf_list_options)
AC_SUBST(elf_shlib_list_options)
AC_SUBST(elf_plt_unwind_list_options)

3
ld/ldmain.c
View File

@ -273,7 +273,8 @@ main (int argc, char **argv)
link_info.keep_memory = TRUE;
link_info.combreloc = TRUE;
link_info.strip_discarded = TRUE;
link_info.emit_hash = TRUE;
link_info.emit_hash = DEFAULT_EMIT_SYSV_HASH;
link_info.emit_gnu_hash = DEFAULT_EMIT_GNU_HASH;
link_info.callbacks = &link_callbacks;
link_info.input_bfds_tail = &link_info.input_bfds;
/* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init