2011-09-26 Benjamin Kosnik <bkoz@redhat.com

[pf3gnuchains/gcc-fork.git] / libstdc++-v3 / acinclude.m4

diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index ccfb2ce..1b9d025 100644 (file)
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -3054,10 +3054,15 @@ dnl
 dnl Add version tags to symbols in shared library (or not), additionally
 dnl marking other symbols as private/local (or not).
 dnl
+dnl Sets libtool_VERSION, and determines shared library SONAME.
+dnl
+dnl  This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
+dnl
 dnl --enable-symvers=style adds a version script to the linker call when
 dnl       creating the shared library.  The choice of version script is
 dnl       controlled by 'style'.
 dnl --disable-symvers does not.
+dnl
 dnl  +  Usage:  GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
 dnl       Where DEFAULT is either 'yes' or 'no'.  Passing `yes' tries to
 dnl       choose a default style based on linker characteristics.  Passing
@@ -3194,7 +3199,10 @@ changequote([,])dnl
   fi
 fi
 
-# Everything parsed; figure out what file to use.
+# For libtool versioning info, format is CURRENT:REVISION:AGE
+libtool_VERSION=6:17:0
+
+# Everything parsed; figure out what files and settings to use.
 case $enable_symvers in
   no)
     SYMVER_FILE=config/abi/pre/none.ver
@@ -3205,6 +3213,7 @@ case $enable_symvers in
              [Define to use GNU versioning in the shared library.])
     ;;
   gnu-versioned-namespace)
+    libtool_VERSION=7:0:0
     SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver
     AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1,
              [Define to use GNU namespace versioning in the shared library.])