Upstream-Status: Inappropriate [Backport]
From d70e14fe2c9c3fc20d9bc1dca7cfcc3d6bb1301e Mon Sep 17 00:00:00 2001
From: ro <ro@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 28 Mar 2011 17:09:27 +0000
Subject: [PATCH 017/200] 	libgfortran:
 	backport from mainline:
 	2011-03-21  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 	PR bootstrap/48135
 	* configure.ac (gfortran_use_symver): Handle --disable-symvers.
 	* configure: Regenerate.

	libgomp:
	backport from mainline:
	2011-03-21  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
	PR bootstrap/48135
	* acinclude.m4 (enable_symvers): Handle --disable-symvers.
	* configure: Regenerate.

	libjava:
	backport from mainline:
	2011-03-21  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
	PR bootstrap/48135
	* configure.ac (libjava_cv_anon_version_script): Handle
	--disable-symvers.
	* configure: Regenerate.

	libquadmath:
	backport from mainline:
	2011-03-21  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
	PR bootstrap/48135
	* configure.ac (quadmath_use_symver): Handle --disable-symvers.
	* configure: Regenerate.

	libssp:
	backport from mainline:
	2011-03-21  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
	PR bootstrap/48135
	* configure.ac (ssp_use_symver): Handle --disable-symvers.
	* configure: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@171617 138bc75d-0d04-0410-961f-82ee72b054a4

index 13a079f..5a81735 100755
--- a/libgfortran/configure
+++ b/libgfortran/configure
@@ -757,6 +757,7 @@ enable_intermodule
 enable_maintainer_mode
 enable_multilib
 enable_dependency_tracking
+enable_symvers
 enable_shared
 enable_static
 with_pic
@@ -1406,6 +1407,7 @@ Optional Features:
   --enable-multilib       build many library versions (default)
   --disable-dependency-tracking  speeds up one-time build
   --enable-dependency-tracking   do not reject slow dependency extractors
+  --disable-symvers       disable symbol versioning for libgfortran
   --enable-shared[=PKGS]  build shared libraries [default=yes]
   --enable-static[=PKGS]  build static libraries [default=yes]
   --enable-fast-install[=PKGS]
@@ -5564,14 +5566,22 @@ fi
 # Check for symbol versioning (copied from libssp).
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether symbol versioning is supported" >&5
 $as_echo_n "checking whether symbol versioning is supported... " >&6; }
-save_LDFLAGS="$LDFLAGS"
-LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
-cat > conftest.map <<EOF
+# Check whether --enable-symvers was given.
+if test "${enable_symvers+set}" = set; then :
+  enableval=$enable_symvers; gfortran_use_symver=$enableval
+else
+  gfortran_use_symver=yes
+fi
+
+if test "x$gfortran_use_symver" = xyes; then
+  save_LDFLAGS="$LDFLAGS"
+  LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
+  cat > conftest.map <<EOF
 FOO_1.0 {
   global: *foo*; bar; local: *;
 };
 EOF
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
 fi
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -5592,18 +5602,18 @@ else
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-if test x$gfortran_use_symver = xno; then
-  case "$target_os" in
-    solaris2*)
-      LDFLAGS="$save_LDFLAGS"
-      LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
-      # Sun ld cannot handle wildcards and treats all entries as undefined.
-      cat > conftest.map <<EOF
+  if test x$gfortran_use_symver = xno; then
+    case "$target_os" in
+      solaris2*)
+        LDFLAGS="$save_LDFLAGS"
+        LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
+        # Sun ld cannot handle wildcards and treats all entries as undefined.
+        cat > conftest.map <<EOF
 FOO_1.0 {
   global: foo; local: *;
 };
 EOF
-      if test x$gcc_no_link = xyes; then
+        if test x$gcc_no_link = xyes; then
   as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
 fi
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -5624,10 +5634,11 @@ else
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-      ;;
-  esac
+        ;;
+    esac
+  fi
+  LDFLAGS="$save_LDFLAGS"
 fi
-LDFLAGS="$save_LDFLAGS"
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gfortran_use_symver" >&5
 $as_echo "$gfortran_use_symver" >&6; }
  if test "x$gfortran_use_symver" != xno; then
@@ -12101,7 +12112,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12104 "configure"
+#line 12115 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12207,7 +12218,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12210 "configure"
+#line 12221 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
diff --git a/libgfortran/configure.ac b/libgfortran/configure.ac
index 66468db..e265ccd 100644
--- a/libgfortran/configure.ac
+++ b/libgfortran/configure.ac
@@ -144,30 +144,37 @@ AC_SUBST(CFLAGS)
 
 # Check for symbol versioning (copied from libssp).
 AC_MSG_CHECKING([whether symbol versioning is supported])
-save_LDFLAGS="$LDFLAGS"
-LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
-cat > conftest.map <<EOF
+AC_ARG_ENABLE(symvers,
+AS_HELP_STRING([--disable-symvers],
+  [disable symbol versioning for libgfortran]),
+gfortran_use_symver=$enableval,
+gfortran_use_symver=yes)
+if test "x$gfortran_use_symver" = xyes; then
+  save_LDFLAGS="$LDFLAGS"
+  LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
+  cat > conftest.map <<EOF
 FOO_1.0 {
   global: *foo*; bar; local: *;
 };
 EOF
-AC_TRY_LINK([int foo;],[],[gfortran_use_symver=gnu],[gfortran_use_symver=no])
-if test x$gfortran_use_symver = xno; then
-  case "$target_os" in
-    solaris2*)
-      LDFLAGS="$save_LDFLAGS"
-      LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
-      # Sun ld cannot handle wildcards and treats all entries as undefined.
-      cat > conftest.map <<EOF
+  AC_TRY_LINK([int foo;],[],[gfortran_use_symver=gnu],[gfortran_use_symver=no])
+  if test x$gfortran_use_symver = xno; then
+    case "$target_os" in
+      solaris2*)
+        LDFLAGS="$save_LDFLAGS"
+        LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
+        # Sun ld cannot handle wildcards and treats all entries as undefined.
+        cat > conftest.map <<EOF
 FOO_1.0 {
   global: foo; local: *;
 };
 EOF
-      AC_TRY_LINK([int foo;],[],[gfortran_use_symver=sun],[gfortran_use_symver=no])
-      ;;
-  esac
+        AC_TRY_LINK([int foo;],[],[gfortran_use_symver=sun],[gfortran_use_symver=no])
+        ;;
+    esac
+  fi
+  LDFLAGS="$save_LDFLAGS"
 fi
-LDFLAGS="$save_LDFLAGS"
 AC_MSG_RESULT($gfortran_use_symver)
 AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno])
 AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu])
index eb876b9..4a4b62f 100644
--- a/libgomp/acinclude.m4
+++ b/libgomp/acinclude.m4
@@ -228,20 +228,24 @@ LIBGOMP_ENABLE(symvers,yes,[=STYLE],
 # If we never went through the LIBGOMP_CHECK_LINKER_FEATURES macro, then we
 # don't know enough about $LD to do tricks...
 AC_REQUIRE([LIBGOMP_CHECK_LINKER_FEATURES])
-# FIXME  The following test is too strict, in theory.
-if test $enable_shared = no || test "x$LD" = x; then
-  enable_symvers=no
-else
-  if test $with_gnu_ld = yes ; then
-    enable_symvers=gnu
+
+# Turn a 'yes' into a suitable default.
+if test x$enable_symvers = xyes ; then
+  # FIXME  The following test is too strict, in theory.
+  if test $enable_shared = no || test "x$LD" = x; then
+    enable_symvers=no
   else
-    case ${target_os} in
-      # Sun symbol versioning exists since Solaris 2.5.
-      solaris2.[[5-9]]* | solaris2.1[[0-9]]*)
-        enable_symvers=sun ;;
-      *)
-        enable_symvers=no ;;
-    esac
+    if test $with_gnu_ld = yes ; then
+      enable_symvers=gnu
+    else
+      case ${target_os} in
+        # Sun symbol versioning exists since Solaris 2.5.
+        solaris2.[[5-9]]* | solaris2.1[[0-9]]*)
+          enable_symvers=sun ;;
+        *)
+          enable_symvers=no ;;
+      esac
+    fi
   fi
 fi
 
diff --git a/libgomp/configure b/libgomp/configure
index 3368c0e..50dc29a 100755
--- a/libgomp/configure
+++ b/libgomp/configure
@@ -15780,20 +15780,24 @@ fi
 # If we never went through the LIBGOMP_CHECK_LINKER_FEATURES macro, then we
 # don't know enough about $LD to do tricks...
 
-# FIXME  The following test is too strict, in theory.
-if test $enable_shared = no || test "x$LD" = x; then
-  enable_symvers=no
-else
-  if test $with_gnu_ld = yes ; then
-    enable_symvers=gnu
+
+# Turn a 'yes' into a suitable default.
+if test x$enable_symvers = xyes ; then
+  # FIXME  The following test is too strict, in theory.
+  if test $enable_shared = no || test "x$LD" = x; then
+    enable_symvers=no
   else
-    case ${target_os} in
-      # Sun symbol versioning exists since Solaris 2.5.
-      solaris2.[5-9]* | solaris2.1[0-9]*)
-        enable_symvers=sun ;;
-      *)
-        enable_symvers=no ;;
-    esac
+    if test $with_gnu_ld = yes ; then
+      enable_symvers=gnu
+    else
+      case ${target_os} in
+        # Sun symbol versioning exists since Solaris 2.5.
+        solaris2.[5-9]* | solaris2.1[0-9]*)
+          enable_symvers=sun ;;
+        *)
+          enable_symvers=no ;;
+      esac
+    fi
   fi
 fi
 
index f79e53b..2a57e13 100755
--- a/libjava/configure
+++ b/libjava/configure
@@ -959,6 +959,7 @@ enable_rpath
 with_libiconv_prefix
 enable_tls
 with_system_libunwind
+enable_symvers
 with_python_dir
 enable_aot_compile_rpm
 enable_java_home
@@ -1648,6 +1649,7 @@ Optional Features:
   --enable-java-gc=TYPE   choose garbage collector (default is boehm)
   --disable-rpath         do not hardcode runtime library paths
   --enable-tls            Use thread-local storage [default=yes]
+  --disable-symvers       disable symbol versioning for libjava
   --enable-aot-compile-rpm
                           enable installation of aot-compile-rpm [default=no]
   --enable-java-home      create a standard JDK-style directory layout in the
@@ -13344,7 +13346,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 13347 "configure"
+#line 13349 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13450,7 +13452,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 13453 "configure"
+#line 13455 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -19443,7 +19445,7 @@ if test "${enable_sjlj_exceptions+set}" = set; then :
   enableval=$enable_sjlj_exceptions; :
 else
   cat > conftest.$ac_ext << EOF
-#line 19446 "configure"
+#line 19448 "configure"
 struct S { ~S(); };
 void bar();
 void foo()
@@ -24530,12 +24532,24 @@ $as_echo_n "checking whether ld supports anonymous version scripts... " >&6; }
 if test "${libjava_cv_anon_version_script+set}" = set; then :
   $as_echo_n "(cached) " >&6
 else
-  save_CFLAGS="$CFLAGS"; save_LDFLAGS="$LDFLAGS"
-   libjava_cv_anon_version_script=no
-   CFLAGS="$CFLAGS -fPIC";
-   LDFLAGS="$LDFLAGS -shared -Wl,--version-script,conftest.map"
-   echo '{ global: globalsymb*; local: *; };' > conftest.map
-   if test x$gcc_no_link = xyes; then
+  # Check whether --enable-symvers was given.
+if test "${enable_symvers+set}" = set; then :
+  enableval=$enable_symvers; case "$enableval" in
+         yes) libjava_cv_anon_version_script=yes ;;
+         no)  libjava_cv_anon_version_script=no ;;
+         *)   as_fn_error "Unknown argument to enable/disable symvers" "$LINENO" 5;;
+        esac
+else
+  libjava_cv_anon_version_script=yes
+
+fi
+
+   if test x$libjava_cv_anon_version_script = xyes; then
+     save_CFLAGS="$CFLAGS"; save_LDFLAGS="$LDFLAGS"
+     CFLAGS="$CFLAGS -fPIC";
+     LDFLAGS="$LDFLAGS -shared -Wl,--version-script,conftest.map"
+     echo '{ global: globalsymb*; local: *; };' > conftest.map
+     if test x$gcc_no_link = xyes; then
   as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
 fi
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -24551,17 +24565,19 @@ main ()
 _ACEOF
 if ac_fn_c_try_link "$LINENO"; then :
   libjava_cv_anon_version_script=gnu
+else
+  libjava_cv_anon_version_script=no
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-   if test x$libjava_cv_anon_version_script = xno; then
-     case "$target_os" in
-       solaris2*)
-         LDFLAGS="$save_LDFLAGS"
-         LDFLAGS="$LDFLAGS -shared -Wl,-M,conftest.map"
-         # Sun ld doesn't understand wildcards here.
-         echo '{ global: globalsymbol; local: *; };' > conftest.map
-         if test x$gcc_no_link = xyes; then
+     if test x$libjava_cv_anon_version_script = xno; then
+       case "$target_os" in
+         solaris2*)
+           LDFLAGS="$save_LDFLAGS"
+           LDFLAGS="$LDFLAGS -shared -Wl,-M,conftest.map"
+           # Sun ld doesn't understand wildcards here.
+           echo '{ global: globalsymbol; local: *; };' > conftest.map
+           if test x$gcc_no_link = xyes; then
   as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
 fi
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -24580,10 +24596,11 @@ if ac_fn_c_try_link "$LINENO"; then :
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-         ;;
-     esac
+           ;;
+       esac
+     fi
+     CFLAGS="$save_CFLAGS"; LDFLAGS="$save_LDFLAGS"
    fi
-   CFLAGS="$save_CFLAGS"; LDFLAGS="$save_LDFLAGS"
 
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libjava_cv_anon_version_script" >&5
diff --git a/libjava/configure.ac b/libjava/configure.ac
index 8187eec..c5bb1a0 100644
--- a/libjava/configure.ac
+++ b/libjava/configure.ac
@@ -1800,26 +1800,38 @@ GCC_CHECK_UNWIND_GETIPINFO
 # See if linker supports anonymous version scripts.
 AC_CACHE_CHECK([whether ld supports anonymous version scripts],
   [libjava_cv_anon_version_script],
-  [save_CFLAGS="$CFLAGS"; save_LDFLAGS="$LDFLAGS"
-   libjava_cv_anon_version_script=no
-   CFLAGS="$CFLAGS -fPIC";
-   LDFLAGS="$LDFLAGS -shared -Wl,--version-script,conftest.map"
-   echo '{ global: globalsymb*; local: *; };' > conftest.map
-   AC_TRY_LINK(void globalsymbol (void) {} void localsymbol (void) {},,
-	       [libjava_cv_anon_version_script=gnu], [])
-   if test x$libjava_cv_anon_version_script = xno; then
-     case "$target_os" in
-       solaris2*)
-         LDFLAGS="$save_LDFLAGS"
-         LDFLAGS="$LDFLAGS -shared -Wl,-M,conftest.map"
-         # Sun ld doesn't understand wildcards here.
-         echo '{ global: globalsymbol; local: *; };' > conftest.map
-         AC_TRY_LINK(void globalsymbol (void) {} void localsymbol (void) {},,
-	 	     [libjava_cv_anon_version_script=sun], [])
-         ;;
-     esac
+  [AC_ARG_ENABLE(symvers,
+     AS_HELP_STRING([--disable-symvers],
+		    [disable symbol versioning for libjava]),
+       [case "$enableval" in
+         yes) libjava_cv_anon_version_script=yes ;;
+         no)  libjava_cv_anon_version_script=no ;;
+         *)   AC_MSG_ERROR([Unknown argument to enable/disable symvers]);;
+        esac],
+       [libjava_cv_anon_version_script=yes]
+   )
+   if test x$libjava_cv_anon_version_script = xyes; then
+     save_CFLAGS="$CFLAGS"; save_LDFLAGS="$LDFLAGS"
+     CFLAGS="$CFLAGS -fPIC";
+     LDFLAGS="$LDFLAGS -shared -Wl,--version-script,conftest.map"
+     echo '{ global: globalsymb*; local: *; };' > conftest.map
+     AC_TRY_LINK(void globalsymbol (void) {} void localsymbol (void) {},,
+	         [libjava_cv_anon_version_script=gnu],
+		 [libjava_cv_anon_version_script=no])
+     if test x$libjava_cv_anon_version_script = xno; then
+       case "$target_os" in
+         solaris2*)
+           LDFLAGS="$save_LDFLAGS"
+           LDFLAGS="$LDFLAGS -shared -Wl,-M,conftest.map"
+           # Sun ld doesn't understand wildcards here.
+           echo '{ global: globalsymbol; local: *; };' > conftest.map
+           AC_TRY_LINK(void globalsymbol (void) {} void localsymbol (void) {},,
+	 	       [libjava_cv_anon_version_script=sun], [])
+           ;;
+       esac
+     fi
+     CFLAGS="$save_CFLAGS"; LDFLAGS="$save_LDFLAGS"
    fi
-   CFLAGS="$save_CFLAGS"; LDFLAGS="$save_LDFLAGS"
   ])
 AM_CONDITIONAL(ANONVERSCRIPT, test "$libjava_cv_anon_version_script" != no)
 AM_CONDITIONAL(ANONVERSCRIPT_GNU, test "$libjava_cv_anon_version_script" = gnu)
index 8735ac5..7f78ea1 100755
--- a/libquadmath/configure
+++ b/libquadmath/configure
@@ -747,6 +747,7 @@ with_gnu_ld
 enable_libtool_lock
 enable_maintainer_mode
 enable_multilib
+enable_symvers
 enable_generated_files_in_srcdir
 '
       ac_precious_vars='build_alias
@@ -1391,6 +1392,7 @@ Optional Features:
   --enable-maintainer-mode  enable make rules and dependencies not useful
 			  (and sometimes confusing) to the casual installer
   --enable-multilib       build many library versions (default)
+  --disable-symvers       disable symbol versioning for libquadmath
   --enable-generated-files-in-srcdir
                           put copies of generated files in source dir intended
                           for creating source tarballs for users without
@@ -10511,7 +10513,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10514 "configure"
+#line 10516 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10617,7 +10619,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10620 "configure"
+#line 10622 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12339,19 +12341,27 @@ CFLAGS="$saved_CFLAGS"
 # Check for symbol versioning (copied from libssp).
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether symbol versioning is supported" >&5
 $as_echo_n "checking whether symbol versioning is supported... " >&6; }
-if test x$gcc_no_link = xyes; then
-  # If we cannot link, we cannot build shared libraries, so do not use
-  # symbol versioning.
-  quadmath_use_symver=no
+# Check whether --enable-symvers was given.
+if test "${enable_symvers+set}" = set; then :
+  enableval=$enable_symvers; quadmath_use_symver=$enableval
 else
-  save_LDFLAGS="$LDFLAGS"
-  LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
-  cat > conftest.map <<EOF
+  quadmath_use_symver=yes
+fi
+
+if test "x$quadmath_use_symver" = xyes; then
+  if test x$gcc_no_link = xyes; then
+    # If we cannot link, we cannot build shared libraries, so do not use
+    # symbol versioning.
+    quadmath_use_symver=no
+  else
+    save_LDFLAGS="$LDFLAGS"
+    LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
+    cat > conftest.map <<EOF
 FOO_1.0 {
   global: *foo*; bar; local: *;
 };
 EOF
-  if test x$gcc_no_link = xyes; then
+    if test x$gcc_no_link = xyes; then
   as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
 fi
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12372,18 +12382,18 @@ else
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-  if test x$quadmath_use_symver = xno; then
-    case "$target_os" in
-      solaris2*)
-        LDFLAGS="$save_LDFLAGS"
-        LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
-        # Sun ld cannot handle wildcards and treats all entries as undefined.
-        cat > conftest.map <<EOF
+    if test x$quadmath_use_symver = xno; then
+      case "$target_os" in
+        solaris2*)
+          LDFLAGS="$save_LDFLAGS"
+          LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
+          # Sun ld cannot handle wildcards and treats all entries as undefined.
+          cat > conftest.map <<EOF
 FOO_1.0 {
   global: foo; local: *;
 };
 EOF
-        if test x$gcc_no_link = xyes; then
+          if test x$gcc_no_link = xyes; then
   as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
 fi
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12404,10 +12414,11 @@ else
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-        ;;
-    esac
+          ;;
+      esac
+    fi
+    LDFLAGS="$save_LDFLAGS"
   fi
-  LDFLAGS="$save_LDFLAGS"
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $quadmath_use_symver" >&5
 $as_echo "$quadmath_use_symver" >&6; }
diff --git a/libquadmath/configure.ac b/libquadmath/configure.ac
index 8559c1d..512b9f8 100644
--- a/libquadmath/configure.ac
+++ b/libquadmath/configure.ac
@@ -164,35 +164,42 @@ CFLAGS="$saved_CFLAGS"
 
 # Check for symbol versioning (copied from libssp).
 AC_MSG_CHECKING([whether symbol versioning is supported])
-if test x$gcc_no_link = xyes; then
-  # If we cannot link, we cannot build shared libraries, so do not use
-  # symbol versioning.
-  quadmath_use_symver=no
-else
-  save_LDFLAGS="$LDFLAGS"
-  LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
-  cat > conftest.map <<EOF
+AC_ARG_ENABLE(symvers,
+AS_HELP_STRING([--disable-symvers],
+  [disable symbol versioning for libquadmath]),
+quadmath_use_symver=$enableval,
+quadmath_use_symver=yes)
+if test "x$quadmath_use_symver" = xyes; then
+  if test x$gcc_no_link = xyes; then
+    # If we cannot link, we cannot build shared libraries, so do not use
+    # symbol versioning.
+    quadmath_use_symver=no
+  else
+    save_LDFLAGS="$LDFLAGS"
+    LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
+    cat > conftest.map <<EOF
 FOO_1.0 {
   global: *foo*; bar; local: *;
 };
 EOF
-  AC_TRY_LINK([int foo;],[],[quadmath_use_symver=gnu],[quadmath_use_symver=no])
-  if test x$quadmath_use_symver = xno; then
-    case "$target_os" in
-      solaris2*)
-        LDFLAGS="$save_LDFLAGS"
-        LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
-        # Sun ld cannot handle wildcards and treats all entries as undefined.
-        cat > conftest.map <<EOF
+    AC_TRY_LINK([int foo;],[],[quadmath_use_symver=gnu],[quadmath_use_symver=no])
+    if test x$quadmath_use_symver = xno; then
+      case "$target_os" in
+        solaris2*)
+          LDFLAGS="$save_LDFLAGS"
+          LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
+          # Sun ld cannot handle wildcards and treats all entries as undefined.
+          cat > conftest.map <<EOF
 FOO_1.0 {
   global: foo; local: *;
 };
 EOF
-        AC_TRY_LINK([int foo;],[],[quadmath_use_symver=sun],[quadmath_use_symver=no])
-        ;;
-    esac
+          AC_TRY_LINK([int foo;],[],[quadmath_use_symver=sun],[quadmath_use_symver=no])
+          ;;
+      esac
+    fi
+    LDFLAGS="$save_LDFLAGS"
   fi
-  LDFLAGS="$save_LDFLAGS"
 fi
 AC_MSG_RESULT($quadmath_use_symver)
 AM_CONDITIONAL(LIBQUAD_USE_SYMVER, [test "x$quadmath_use_symver" != xno])
index 85a6a0a..b1edcb4 100755
--- a/libssp/configure
+++ b/libssp/configure
@@ -734,6 +734,7 @@ enable_version_specific_runtime_libs
 enable_maintainer_mode
 enable_multilib
 enable_dependency_tracking
+enable_symvers
 enable_shared
 enable_static
 with_pic
@@ -1372,6 +1373,7 @@ Optional Features:
   --enable-multilib       build many library versions (default)
   --disable-dependency-tracking  speeds up one-time build
   --enable-dependency-tracking   do not reject slow dependency extractors
+  --disable-symvers       disable symbol versioning for libssp
   --enable-shared[=PKGS]  build shared libraries [default=yes]
   --enable-static[=PKGS]  build static libraries [default=yes]
   --enable-fast-install[=PKGS]
@@ -4098,19 +4100,27 @@ fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether symbol versioning is supported" >&5
 $as_echo_n "checking whether symbol versioning is supported... " >&6; }
-if test x$gcc_no_link = xyes; then
-  # If we cannot link, we cannot build shared libraries, so do not use
-  # symbol versioning.
-  ssp_use_symver=no
+# Check whether --enable-symvers was given.
+if test "${enable_symvers+set}" = set; then :
+  enableval=$enable_symvers; ssp_use_symver=$enableval
 else
-  save_LDFLAGS="$LDFLAGS"
-  LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
-  cat > conftest.map <<EOF
+  ssp_use_symver=yes
+fi
+
+if test "x$ssp_use_symver" = xyes; then
+  if test x$gcc_no_link = xyes; then
+    # If we cannot link, we cannot build shared libraries, so do not use
+    # symbol versioning.
+    ssp_use_symver=no
+  else
+    save_LDFLAGS="$LDFLAGS"
+    LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
+    cat > conftest.map <<EOF
 FOO_1.0 {
   global: *foo*; bar; local: *;
 };
 EOF
-  if test x$gcc_no_link = xyes; then
+    if test x$gcc_no_link = xyes; then
   as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
 fi
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -4131,18 +4141,18 @@ else
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-  if test x$ssp_use_symver = xno; then
-    case "$target_os" in
-      solaris2*)
-        LDFLAGS="$save_LDFLAGS"
-        LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
-        # Sun ld cannot handle wildcards and treats all entries as undefined.
-        cat > conftest.map <<EOF
+    if test x$ssp_use_symver = xno; then
+      case "$target_os" in
+        solaris2*)
+          LDFLAGS="$save_LDFLAGS"
+          LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
+          # Sun ld cannot handle wildcards and treats all entries as undefined.
+          cat > conftest.map <<EOF
 FOO_1.0 {
   global: foo; local: *;
 };
 EOF
-        if test x$gcc_no_link = xyes; then
+          if test x$gcc_no_link = xyes; then
   as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
 fi
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -4163,10 +4173,11 @@ else
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-    	;;
-    esac
+	  ;;
+      esac
+    fi
+    LDFLAGS="$save_LDFLAGS"
   fi
-  LDFLAGS="$save_LDFLAGS"
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ssp_use_symver" >&5
 $as_echo "$ssp_use_symver" >&6; }
@@ -10639,7 +10650,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10642 "configure"
+#line 10653 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10745,7 +10756,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10748 "configure"
+#line 10759 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
diff --git a/libssp/configure.ac b/libssp/configure.ac
index ee48f4d..0eee36c 100644
--- a/libssp/configure.ac
+++ b/libssp/configure.ac
@@ -72,35 +72,42 @@ if test x$ssp_hidden = xyes; then
 fi
 
 AC_MSG_CHECKING([whether symbol versioning is supported])
-if test x$gcc_no_link = xyes; then
-  # If we cannot link, we cannot build shared libraries, so do not use
-  # symbol versioning.
-  ssp_use_symver=no
-else
-  save_LDFLAGS="$LDFLAGS"
-  LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
-  cat > conftest.map <<EOF
+AC_ARG_ENABLE(symvers,
+AS_HELP_STRING([--disable-symvers],
+  [disable symbol versioning for libssp]),
+ssp_use_symver=$enableval,
+ssp_use_symver=yes)
+if test "x$ssp_use_symver" = xyes; then
+  if test x$gcc_no_link = xyes; then
+    # If we cannot link, we cannot build shared libraries, so do not use
+    # symbol versioning.
+    ssp_use_symver=no
+  else
+    save_LDFLAGS="$LDFLAGS"
+    LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
+    cat > conftest.map <<EOF
 FOO_1.0 {
   global: *foo*; bar; local: *;
 };
 EOF
-  AC_TRY_LINK([int foo;],[],[ssp_use_symver=gnu],[ssp_use_symver=no])
-  if test x$ssp_use_symver = xno; then
-    case "$target_os" in
-      solaris2*)
-        LDFLAGS="$save_LDFLAGS"
-        LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
-        # Sun ld cannot handle wildcards and treats all entries as undefined.
-        cat > conftest.map <<EOF
+    AC_TRY_LINK([int foo;],[],[ssp_use_symver=gnu],[ssp_use_symver=no])
+    if test x$ssp_use_symver = xno; then
+      case "$target_os" in
+        solaris2*)
+          LDFLAGS="$save_LDFLAGS"
+          LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
+          # Sun ld cannot handle wildcards and treats all entries as undefined.
+          cat > conftest.map <<EOF
 FOO_1.0 {
   global: foo; local: *;
 };
 EOF
-        AC_TRY_LINK([int foo;],[],[ssp_use_symver=sun],[ssp_use_symver=no])
-    	;;
-    esac
+          AC_TRY_LINK([int foo;],[],[ssp_use_symver=sun],[ssp_use_symver=no])
+	  ;;
+      esac
+    fi
+    LDFLAGS="$save_LDFLAGS"
   fi
-  LDFLAGS="$save_LDFLAGS"
 fi
 AC_MSG_RESULT($ssp_use_symver)
 AM_CONDITIONAL(LIBSSP_USE_SYMVER, [test "x$ssp_use_symver" != xno])
-- 
1.7.0.4