Try to fix libmysqlclient symlinks on per-OS basis.

libmysql/CMakeLists.txt

@@ -177,10 +177,18 @@ ENDIF()
 IF(NOT DISABLE_SHARED)
   MERGE_LIBRARIES(libmysql SHARED ${LIBS} EXPORTS ${CLIENT_API_FUNCTIONS})
   IF(UNIX)
+    # libtool compatability
+    IF(CMAKE_SYSTEM_NAME MATCHES "FreeBSD" OR APPLE)
+      SET(OS_SHARED_LIB_VERSION "${SHARED_LIB_MAJOR_VERSION}")
+    ELSEIF(CMAKE_SYSTEM_NAME MATCHES "HP-UX")
+      SET(OS_SHARED_LIB_VERSION "${SHARED_LIB_MAJOR_VERSION}.0")
+    ELSE()
+      SET(OS_SHARED_LIB_VERSION "${SHARED_LIB_MAJOR_VERSION}.0.0")
+    ENDIF()
     # Name of shared library is mysqlclient on Unix
     SET_TARGET_PROPERTIES(libmysql PROPERTIES 
       OUTPUT_NAME mysqlclient 
-      VERSION "${SHARED_LIB_MAJOR_VERSION}.0.0" 
+      VERSION "${OS_SHARED_LIB_VERSION}" 
       SOVERSION "${SHARED_LIB_MAJOR_VERSION}")
     IF(LINK_FLAG_NO_UNDEFINED)
       GET_TARGET_PROPERTY(libmysql_link_flags libmysql LINK_FLAGS)
@@ -196,8 +204,7 @@ IF(NOT DISABLE_SHARED)
     SET_TARGET_PROPERTIES(libmysql PROPERTIES CLEAN_DIRECT_OUTPUT 1)
 
     # Install 3 links to libmysqlclient.so (client_r)
-    FOREACH(ver "" "${SHARED_LIB_MAJOR_VERSION}"
-                "${SHARED_LIB_MAJOR_VERSION}.0.0")
+    FOREACH(ver "" "${SHARED_LIB_MAJOR_VERSION}" "${OS_SHARED_LIB_VERSION}")
        GET_VERSIONED_LIBNAME(
          "${CMAKE_SHARED_LIBRARY_PREFIX}mysqlclient_r"
          "${CMAKE_SHARED_LIBRARY_SUFFIX}"