--- /dev/null
+Upstream-Status: Backport
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+commit 3cb9bbfa927aa187048534f9069202c017a78e38
+Author: ppluzhnikov <ppluzhnikov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed May 11 18:28:14 2011 +0000
+
+ 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.
+
+
+
+ git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@173668 138bc75d-0d04-0410-961f-82ee72b054a4
+
+Index: gcc-4_6-branch/gcc/config.in
+===================================================================
+--- gcc-4_6-branch.orig/gcc/config.in 2011-09-09 08:26:10.000000000 -0700
++++ gcc-4_6-branch/gcc/config.in 2011-09-09 08:27:14.142981164 -0700
+@@ -1583,6 +1583,12 @@
+ #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
+Index: gcc-4_6-branch/gcc/configure
+===================================================================
+--- gcc-4_6-branch.orig/gcc/configure 2011-09-09 08:26:15.000000000 -0700
++++ gcc-4_6-branch/gcc/configure 2011-09-09 08:27:42.793023181 -0700
+@@ -915,6 +915,7 @@
+ enable_poison_system_directories
+ enable_plugin
+ enable_libquadmath_support
++with_linker_hash_style
+ '
+ ac_precious_vars='build_alias
+ host_alias
+@@ -1667,6 +1668,8 @@
+ 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
+@@ -17511,7 +17514,7 @@
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<_LT_EOF
+-#line 17514 "configure"
++#line 17517 "configure"
+ #include "confdefs.h"
+
+ #if HAVE_DLFCN_H
+@@ -17617,7 +17620,7 @@
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<_LT_EOF
+-#line 17620 "configure"
++#line 17623 "configure"
+ #include "confdefs.h"
+
+ #if HAVE_DLFCN_H
+@@ -26434,6 +26437,36 @@
+ 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)
+
+Index: gcc-4_6-branch/gcc/configure.ac
+===================================================================
+--- gcc-4_6-branch.orig/gcc/configure.ac 2011-09-09 08:26:15.000000000 -0700
++++ gcc-4_6-branch/gcc/configure.ac 2011-09-09 08:27:14.162981193 -0700
+@@ -4907,6 +4907,30 @@
+ 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)
+
+Index: gcc-4_6-branch/gcc/doc/install.texi
+===================================================================
+--- gcc-4_6-branch.orig/gcc/doc/install.texi 2011-06-24 08:13:00.000000000 -0700
++++ gcc-4_6-branch/gcc/doc/install.texi 2011-09-09 08:27:14.172981215 -0700
+@@ -1665,6 +1665,11 @@
+ 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
+Index: gcc-4_6-branch/gcc/gcc.c
+===================================================================
+--- gcc-4_6-branch.orig/gcc/gcc.c 2011-09-09 08:26:14.000000000 -0700
++++ gcc-4_6-branch/gcc/gcc.c 2011-09-09 08:27:14.172981215 -0700
+@@ -1427,7 +1427,8 @@
+ }
+ #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);
+@@ -1436,6 +1437,16 @@
+ /* 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 *);
+ #endif