Only export symbols explicitly listed in Version_script.in when the

linker supports it (GNU ld on linux or solaris) to avoid conflicts
from internal symbols, most specifically the ogg implementation.


git-svn-id: https://svn.xiph.org/trunk/Tremor@13291 0101bb08-14d6-0310-b084-bc0e0c8e3800

Version_script.in

+#
+# Export file for libvorbisidec
+#
+# Only the symbols listed in the global section will be callable from
+# applications linking to libvorbisidec.
+#
+
+@PACKAGE@.so.1
+{
+	global:
+		ov_clear;
+		ov_open;
+		ov_open_callbacks;
+		ov_test;
+		ov_test_callbacks;
+		ov_test_open;
+		ov_bitrate;
+		ov_bitrate_instant;
+		ov_streams;
+		ov_seekable;
+		ov_serialnumber;
+		ov_raw_total;
+		ov_pcm_total;
+		ov_time_total;
+		ov_raw_seek;
+		ov_pcm_seek;
+		ov_pcm_seek_page;
+		ov_time_seek;
+		ov_time_seek_page;
+		ov_raw_tell;
+		ov_pcm_tell;
+		ov_time_tell;
+		ov_info;
+		ov_comment;
+		ov_read;
+
+		vorbis_info_init;
+		vorbis_info_clear;
+		vorbis_info_blocksize;
+		vorbis_comment_init;
+		vorbis_comment_add;
+		vorbis_comment_add_tag;
+		vorbis_comment_query;
+		vorbis_comment_query_count;
+		vorbis_comment_clear;
+
+	local:
+		*;
+};

configure.in

@@ -71,6 +71,24 @@ fi
 CFLAGS="$CFLAGS $cflags_save -D_REENTRANT"
 LDFLAGS="$LDFLAGS $ldflags_save"
 
+
+# Test whenever ld supports -version-script
+AC_PROG_LD
+AC_PROG_LD_GNU
+if test "x$lt_cv_prog_gnu_ld" = "xyes"; then
+   SHLIB_VERSION_ARG="Wl,--version-script=Version_script"
+
+   dnl Set extra linker options
+   case "$target_os" in
+  linux* | solaris* )
+    SHLIB_VERSION_ARG="-Wl,--version-script=Version_script"
+    ;;
+  *)
+    ;;
+   esac
+   LDFLAGS="$LDFLAGS $SHLIB_VERSION_ARG"
+fi
+
 dnl --------------------------------------------------
 dnl Options 
 dnl --------------------------------------------------
@@ -110,4 +128,4 @@ AC_SUBST(LIBS)
 AC_SUBST(DEBUG)
 AC_SUBST(PROFILE)
 
-AC_OUTPUT(Makefile)
+AC_OUTPUT(Makefile Version_script)