diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index 4ec92adc539c3d77a50a6e9fd6d110c76d810cf4..b629d30dab976b76536232093c8560b050578a75 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,9 @@
+2012-05-31  Benjamin Kosnik  <bkoz@redhat.com>
+
+        PR libstdc++/51007
+        * configure.ac: Allow gnu, gnu* variants for --enable-symvers argument.
+        * configure: Regenerated.
+
 2012-05-31  Tobias Burnus  <burnus@net-b.de>
 
 	Revert:
diff --git a/libgfortran/configure b/libgfortran/configure
index ca33870e9f630f3435b6c281df999258c439b859..3c1ca430a329e02edd60c146a100ad3d0fe0bebb 100755
--- a/libgfortran/configure
+++ b/libgfortran/configure
@@ -5781,7 +5781,7 @@ else
   gfortran_use_symver=yes
 fi
 
-if test "x$gfortran_use_symver" = xyes; then
+if test "x$gfortran_use_symver" != xno; then
   save_LDFLAGS="$LDFLAGS"
   LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
   cat > conftest.map <<EOF
diff --git a/libgfortran/configure.ac b/libgfortran/configure.ac
index fc58a5c24b95232825fe8561d8031264900ab793..97b337e33ec6419b5a43ef9b55613974d7a815c9 100644
--- a/libgfortran/configure.ac
+++ b/libgfortran/configure.ac
@@ -157,7 +157,7 @@ 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
+if test "x$gfortran_use_symver" != xno; then
   save_LDFLAGS="$LDFLAGS"
   LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
   cat > conftest.map <<EOF
diff --git a/libquadmath/ChangeLog b/libquadmath/ChangeLog
index 4c25e88132719c996765faec05017c514c01ca4c..b5e92149e507e67e51cc27e68c20a4521ab2f96a 100644
--- a/libquadmath/ChangeLog
+++ b/libquadmath/ChangeLog
@@ -1,3 +1,9 @@
+2012-05-29  Benjamin Kosnik  <bkoz@redhat.com>
+
+	PR libstdc++/51007
+	* configure.ac: Allow gnu, gnu* variants for --enable-symvers argument.
+	* configure: Regenerated.
+	
 2012-05-16  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* configure: Regenerated.
diff --git a/libquadmath/configure b/libquadmath/configure
index e5c3de65164b9e98bca0468ee66f845082ac7b24..8beb1a6255aad0a39d1fbf369f7072ebd5c4c107 100755
--- a/libquadmath/configure
+++ b/libquadmath/configure
@@ -12355,7 +12355,7 @@ else
   quadmath_use_symver=yes
 fi
 
-if test "x$quadmath_use_symver" = xyes; then
+if test "x$quadmath_use_symver" != xno; then
   if test x$gcc_no_link = xyes; then
     # If we cannot link, we cannot build shared libraries, so do not use
     # symbol versioning.
diff --git a/libquadmath/configure.ac b/libquadmath/configure.ac
index 512b9f81391550aca9eef376f2c37e57d6cf0207..d3bfb040cd044c69369fe55da04f0e0c8243cc08 100644
--- a/libquadmath/configure.ac
+++ b/libquadmath/configure.ac
@@ -169,7 +169,7 @@ AS_HELP_STRING([--disable-symvers],
   [disable symbol versioning for libquadmath]),
 quadmath_use_symver=$enableval,
 quadmath_use_symver=yes)
-if test "x$quadmath_use_symver" = xyes; then
+if test "x$quadmath_use_symver" != xno; then
   if test x$gcc_no_link = xyes; then
     # If we cannot link, we cannot build shared libraries, so do not use
     # symbol versioning.
diff --git a/libssp/ChangeLog b/libssp/ChangeLog
index 16d4bf6a8b89cb9f7304c00a8838f1abe3dd363f..eed64ba47f8ba80702b5e13e3fbf355f789bd1c2 100644
--- a/libssp/ChangeLog
+++ b/libssp/ChangeLog
@@ -1,3 +1,9 @@
+2012-05-29  Benjamin Kosnik  <bkoz@redhat.com>
+
+        PR libstdc++/51007
+        * configure.ac: Allow gnu, gnu* variants for --enable-symvers argument.
+        * configure: Regenerated.
+
 2012-05-16  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* configure: Regenerated.
diff --git a/libssp/configure b/libssp/configure
index eba09f01103f1ae049c58c819c6622a322ea5bd7..84b37124e30407eef4c913ddb4bb2ba151a0c8c2 100755
--- a/libssp/configure
+++ b/libssp/configure
@@ -4107,7 +4107,7 @@ else
   ssp_use_symver=yes
 fi
 
-if test "x$ssp_use_symver" = xyes; then
+if test "x$ssp_use_symver" != xno; then
   if test x$gcc_no_link = xyes; then
     # If we cannot link, we cannot build shared libraries, so do not use
     # symbol versioning.
diff --git a/libssp/configure.ac b/libssp/configure.ac
index 0eee36ce014aa1680c0652451598f8be2b4895aa..93dfa8da470423a939529d94151a3a8d10a022a7 100644
--- a/libssp/configure.ac
+++ b/libssp/configure.ac
@@ -77,7 +77,7 @@ AS_HELP_STRING([--disable-symvers],
   [disable symbol versioning for libssp]),
 ssp_use_symver=$enableval,
 ssp_use_symver=yes)
-if test "x$ssp_use_symver" = xyes; then
+if test "x$ssp_use_symver" != xno; then
   if test x$gcc_no_link = xyes; then
     # If we cannot link, we cannot build shared libraries, so do not use
     # symbol versioning.