fixed some empty descriptions

Templates/CXXCMakeSystemConfig.cmake.in

@@ -13,45 +13,49 @@ SET(CMAKE_CXX_SHLIB_RUNTIME_SEP_TMP "@CMAKE_CXX_SHLIB_RUNTIME_SEP@")
 
 # if no CXX versions of these exist, then use the c versions
 IF( CMAKE_CXX_SHLIB_CFLAGS_TMP )
-   SET(CMAKE_CXX_SHLIB_CFLAGS "${CMAKE_CXX_SHLIB_CFLAGS_TMP}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_CFLAGS "${CMAKE_CXX_SHLIB_CFLAGS_TMP}" CACHE STRING 
+	"Flag used for building shared library objects.")
 ELSE( CMAKE_CXX_SHLIB_CFLAGS_TMP )
-   SET(CMAKE_CXX_SHLIB_CFLAGS "${CMAKE_SHLIB_CFLAGS}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_CFLAGS "${CMAKE_SHLIB_CFLAGS}" CACHE STRING 
+	"Flag used for building shared library objects.")
 ENDIF(  CMAKE_CXX_SHLIB_CFLAGS_TMP )
 
 IF(  CMAKE_CXX_SHLIB_BUILD_FLAGS_TMP )
-   SET(CMAKE_CXX_SHLIB_BUILD_FLAGS "${CMAKE_CXX_SHLIB_BUILD_FLAGS_TMP}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_BUILD_FLAGS "${CMAKE_CXX_SHLIB_BUILD_FLAGS_TMP}" CACHE STRING "Flag used by CXX to build a shared library.")
 ELSE(  CMAKE_CXX_SHLIB_BUILD_FLAGS_TMP )
-   SET(CMAKE_CXX_SHLIB_BUILD_FLAGS "${CMAKE_SHLIB_BUILD_FLAGS}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_BUILD_FLAGS "${CMAKE_SHLIB_BUILD_FLAGS}" CACHE STRING "Flag used by CXX to build a shared library.")
 ENDIF(  CMAKE_CXX_SHLIB_BUILD_FLAGS_TMP )
 
 IF(  CMAKE_CXX_SHLIB_LINK_FLAGS_TMP )
-   SET(CMAKE_CXX_SHLIB_LINK_FLAGS "${CMAKE_CXX_SHLIB_LINK_FLAGS_TMP}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_LINK_FLAGS "${CMAKE_CXX_SHLIB_LINK_FLAGS_TMP}" CACHE STRING "Flags used to link a shared library.")
 ELSE(  CMAKE_CXX_SHLIB_LINK_FLAGS_TMP )
-   SET(CMAKE_CXX_SHLIB_LINK_FLAGS "${CMAKE_SHLIB_LINK_FLAGS}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_LINK_FLAGS "${CMAKE_SHLIB_LINK_FLAGS}" CACHE STRING 
+	"Flags used to link a shared library.")
 ENDIF(  CMAKE_CXX_SHLIB_LINK_FLAGS_TMP )
 
 IF(  CMAKE_CXX_MODULE_BUILD_FLAGS_TMP )
-   SET(CMAKE_CXX_MODULE_BUILD_FLAGS "${CMAKE_CXX_MODULE_BUILD_FLAGS_TMP}" CACHE STRING "" )
+   SET(CMAKE_CXX_MODULE_BUILD_FLAGS "${CMAKE_CXX_MODULE_BUILD_FLAGS_TMP}" CACHE STRING "Flag used by CXX to build a shared library.")
 ELSE(  CMAKE_CXX_MODULE_BUILD_FLAGS_TMP )
-   SET(CMAKE_CXX_MODULE_BUILD_FLAGS "${CMAKE_MODULE_BUILD_FLAGS}" CACHE STRING "" )
+   SET(CMAKE_CXX_MODULE_BUILD_FLAGS "${CMAKE_MODULE_BUILD_FLAGS}" CACHE STRING "Flag used by CXX to build a shared library.")
 ENDIF(  CMAKE_CXX_MODULE_BUILD_FLAGS_TMP )
 
 IF(  CMAKE_CXX_MODULE_LINK_FLAGS_TMP )
-   SET(CMAKE_CXX_MODULE_LINK_FLAGS "${CMAKE_CXX_MODULE_LINK_FLAGS_TMP}" CACHE STRING "")
+   SET(CMAKE_CXX_MODULE_LINK_FLAGS "${CMAKE_CXX_MODULE_LINK_FLAGS_TMP}" CACHE STRING "Flags used to link a shared library.")
 ELSE(  CMAKE_CXX_MODULE_LINK_FLAGS_TMP )
-   SET(CMAKE_CXX_MODULE_LINK_FLAGS "${CMAKE_MODULE_LINK_FLAGS}" CACHE STRING "")
+   SET(CMAKE_CXX_MODULE_LINK_FLAGS "${CMAKE_MODULE_LINK_FLAGS}" CACHE STRING 
+	"Flags used to link a shared library.")
 ENDIF(  CMAKE_CXX_MODULE_LINK_FLAGS_TMP )
 
 IF(  CMAKE_CXX_SHLIB_RUNTIME_FLAG_TMP )
-   SET(CMAKE_CXX_SHLIB_RUNTIME_FLAG "${CMAKE_CXX_SHLIB_RUNTIME_FLAG_TMP}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_RUNTIME_FLAG "${CMAKE_CXX_SHLIB_RUNTIME_FLAG_TMP}" CACHE STRING "Flag used to specify run-time search paths.")
 ELSE(  CMAKE_CXX_SHLIB_RUNTIME_FLAG_TMP )
-   SET(CMAKE_CXX_SHLIB_RUNTIME_FLAG "${CMAKE_SHLIB_RUNTIME_FLAG}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_RUNTIME_FLAG "${CMAKE_SHLIB_RUNTIME_FLAG}" CACHE STRING "Flag used to specify run-time search paths.")
 ENDIF(  CMAKE_CXX_SHLIB_RUNTIME_FLAG_TMP )
 
 IF(  CMAKE_CXX_SHLIB_RUNTIME_SEP_TMP )
-   SET(CMAKE_CXX_SHLIB_RUNTIME_SEP "${CMAKE_CXX_SHLIB_RUNTIME_SEP_TMP}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_RUNTIME_SEP "${CMAKE_CXX_SHLIB_RUNTIME_SEP_TMP}" CACHE STRING "If null, each runtime path is a separate option. Otherwise, they are all joined, separated by this.")
 ELSE(  CMAKE_CXX_SHLIB_RUNTIME_SEP_TMP )
-   SET(CMAKE_CXX_SHLIB_RUNTIME_SEP "${CMAKE_SHLIB_RUNTIME_SEP}" CACHE STRING "")
+   SET(CMAKE_CXX_SHLIB_RUNTIME_SEP "${CMAKE_SHLIB_RUNTIME_SEP}" CACHE STRING "If null, each runtime path is a separate option. Otherwise, they are all joined, separated by this.")
 ENDIF(  CMAKE_CXX_SHLIB_RUNTIME_SEP_TMP )
 
 SET(CMAKE_CXX_LINK_SHARED "@CMAKE_CXX_LINK_SHARED@" CACHE STRING