BUG#3074: Unversioned symbols in shared library

libmysqlclient versioning when linked with GNU ld.

.bzrignore

@@ -1057,3 +1057,4 @@ vio/test-ssl
 vio/test-sslclient
 vio/test-sslserver
 vio/viotest-ssl
+libmysql/libmysql.ver

configure.in

@@ -11,7 +11,8 @@ AM_CONFIG_HEADER(config.h)
 PROTOCOL_VERSION=10
 DOT_FRM_VERSION=6
 # See the libtool docs for information on how to do shared lib versions.
-SHARED_LIB_VERSION=14:0:0
+SHARED_LIB_MAJOR_VERSION=14
+SHARED_LIB_VERSION=$SHARED_LIB_MAJOR_VERSION:0:0
 
 # ndb version
 NDB_VERSION_MAJOR=4
@@ -68,6 +69,7 @@ AC_DEFINE_UNQUOTED([PROTOCOL_VERSION], [$PROTOCOL_VERSION],
 AC_SUBST(DOT_FRM_VERSION)
 AC_DEFINE_UNQUOTED([DOT_FRM_VERSION], [$DOT_FRM_VERSION],
                    [Version of .frm files])
+AC_SUBST(SHARED_LIB_MAJOR_VERSION)
 AC_SUBST(SHARED_LIB_VERSION)
 AC_SUBST(AVAILABLE_LANGUAGES)
 AC_SUBST(AVAILABLE_LANGUAGES_ERRORS)
@@ -431,6 +433,13 @@ then
   fi
 fi
 
+# libmysqlclient versioning when linked with GNU ld.
+if $LD --version 2>/dev/null|grep -q GNU; then
+  LD_VERSION_SCRIPT="-Wl,--version-script=\$(top_srcdir)/libmysql/libmysql.ver"
+  AC_CONFIG_FILES(libmysql/libmysql.ver)
+fi
+AC_SUBST(LD_VERSION_SCRIPT)
+
 # Avoid bug in fcntl on some versions of linux
 AC_MSG_CHECKING("if we should use 'skip-locking' as default for $target_os")
 # Any wariation of Linux

libmysql/Makefile.shared

@@ -75,7 +75,7 @@ mysysobjects2 =		my_lib.lo
 mysysobjects =		$(mysysobjects1) $(mysysobjects2)
 target_libadd =		$(mysysobjects) $(mystringsobjects) $(dbugobjects) \
  $(sql_cmn_objects) $(vio_objects) $(sqlobjects)
-target_ldflags = -version-info @SHARED_LIB_VERSION@
+target_ldflags = -version-info @SHARED_LIB_VERSION@ @LD_VERSION_SCRIPT@ 
 vio_objects= vio.lo viosocket.lo viossl.lo viosslfactories.lo
 CLEANFILES =		$(target_libadd) $(SHLIBOBJS) \
 			$(target)

libmysql/libmysql.ver.in

@@ -0,0 +1 @@
+libmysqlclient_@SHARED_LIB_MAJOR_VERSION@ { global: *; };