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install.texi (Configuration): Document --with-linker-hash-style. 

2011-05-11  Satoru Takabayashi  <satorux@google.com>
	    Paul Pluzhnikov  <ppluzhnikov@google.com>

	* gcc/doc/install.texi (Configuration): Document
	--with-linker-hash-style.
	* gcc/gcc.c (init_spec): Handle LINKER_HASH_STYLE.
	* gcc/config.in: Add LINKER_HASH_STYLE.
	* gcc/configure.ac: Add --with-linker-hash-style.
	* gcc/configure: Regenerate.


Co-Authored-By: Paul Pluzhnikov <ppluzhnikov@google.com>

From-SVN: r173668
This commit is contained in:
Satoru Takabayashi 2011-05-11 18:28:14 +00:00 committed by Paul Pluzhnikov
parent e5b00edff5
commit 79bec9233c
6 changed files with 92 additions and 3 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2011-05-11 Satoru Takabayashi <satorux@google.com>
Paul Pluzhnikov <ppluzhnikov@google.com>
* gcc/doc/install.texi (Configuration): Document
--with-linker-hash-style.
* gcc/gcc.c (init_spec): Handle LINKER_HASH_STYLE.
* gcc/config.in: Add LINKER_HASH_STYLE.
* gcc/configure.ac: Add --with-linker-hash-style.
* gcc/configure: Regenerate.
2011-05-11 Richard Guenther <rguenther@suse.de>
PR middle-end/48964

6
gcc/config.in
View File

@ -1580,6 +1580,12 @@
#endif
/* The linker hash style */
#ifndef USED_FOR_TARGET
#undef LINKER_HASH_STYLE
#endif
/* Define to the name of the LTO plugin DSO that must be passed to the
linker's -plugin=LIB option. */
#ifndef USED_FOR_TARGET

37
gcc/configure vendored
View File

@ -915,6 +915,7 @@ enable_version_specific_runtime_libs
with_slibdir
enable_plugin
enable_libquadmath_support
with_linker_hash_style
'
ac_precious_vars='build_alias
host_alias
@ -1665,6 +1666,8 @@ Optional Packages:
with the compiler
--with-system-zlib use installed libz
--with-slibdir=DIR shared libraries in DIR [LIBDIR]
--with-linker-hash-style={sysv,gnu,both}
specify the linker hash style
Some influential environment variables:
CC C compiler command
@ -17514,7 +17517,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 17517 "configure"
#line 17520 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -17620,7 +17623,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 17623 "configure"
#line 17626 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -26469,6 +26472,36 @@ $as_echo "#define ENABLE_LIBQUADMATH_SUPPORT 1" >>confdefs.h
fi
# Specify what hash style to use by default.
# Check whether --with-linker-hash-style was given.
if test "${with_linker_hash_style+set}" = set; then :
withval=$with_linker_hash_style; case x"$withval" in
xsysv)
LINKER_HASH_STYLE=sysv
;;
xgnu)
LINKER_HASH_STYLE=gnu
;;
xboth)
LINKER_HASH_STYLE=both
;;
*)
as_fn_error "$withval is an invalid option to --with-linker-hash-style" "$LINENO" 5
;;
esac
else
LINKER_HASH_STYLE=''
fi
if test x"${LINKER_HASH_STYLE}" != x; then
cat >>confdefs.h <<_ACEOF
#define LINKER_HASH_STYLE "$LINKER_HASH_STYLE"
_ACEOF
fi
# Configure the subdirectories
# AC_CONFIG_SUBDIRS($subdirs)

24
gcc/configure.ac
View File

@ -4942,6 +4942,30 @@ if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
fi
# Specify what hash style to use by default.
AC_ARG_WITH([linker-hash-style],
[AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
[specify the linker hash style])],
[case x"$withval" in
xsysv)
LINKER_HASH_STYLE=sysv
;;
xgnu)
LINKER_HASH_STYLE=gnu
;;
xboth)
LINKER_HASH_STYLE=both
;;
*)
AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
;;
esac],
[LINKER_HASH_STYLE=''])
if test x"${LINKER_HASH_STYLE}" != x; then
AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
[The linker hash style])
fi
# Configure the subdirectories
# AC_CONFIG_SUBDIRS($subdirs)

5
gcc/doc/install.texi
View File

@ -1659,6 +1659,11 @@ option), if the linker supports it. If you specify
support @option{--build-id} option, a warning is issued and the
@option{--enable-linker-build-id} option is ignored. The default is off.
@item --with-linker-hash-style=@var{choice}
Tells GCC to pass @option{--hash-style=@var{choice}} option to the
linker for all final links. @var{choice} can be one of
@samp{sysv}, @samp{gnu}, and @samp{both} where @samp{sysv} is the default.
@item --enable-gnu-unique-object
@itemx --disable-gnu-unique-object
Tells GCC to use the gnu_unique_object relocation for C++ template

13
gcc/gcc.c
View File

@ -1438,7 +1438,8 @@ init_spec (void)
}
#endif
#if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
#if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
defined LINKER_HASH_STYLE
# ifdef LINK_BUILDID_SPEC
/* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
@ -1446,6 +1447,16 @@ init_spec (void)
# ifdef LINK_EH_SPEC
/* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
# endif
# ifdef LINKER_HASH_STYLE
/* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
before. */
{
static const char hash_style[] = "--hash-style=";
obstack_grow (&obstack, hash_style, sizeof(hash_style) - 1);
obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof(LINKER_HASH_STYLE) - 1);
obstack_1grow (&obstack, ' ');
}
# endif
obstack_grow0 (&obstack, link_spec, strlen (link_spec));
link_spec = XOBFINISH (&obstack, const char *);