Fix the feature of using a specific prefix for macros.

Modules/GenerateExportHeader.cmake

@@ -237,19 +237,19 @@ macro(_DO_GENERATE_EXPORT_HEADER TARGET_LIBRARY)
   string(TOLOWER ${BASE_NAME} BASE_NAME_LOWER)
 
   # Default options
-  set(EXPORT_MACRO_NAME "${PREFIX}${BASE_NAME_UPPER}_EXPORT")
-  set(NO_EXPORT_MACRO_NAME "${PREFIX}${BASE_NAME_UPPER}_NO_EXPORT")
+  set(EXPORT_MACRO_NAME "${_GEH_PREFIX_NAME}${BASE_NAME_UPPER}_EXPORT")
+  set(NO_EXPORT_MACRO_NAME "${_GEH_PREFIX_NAME}${BASE_NAME_UPPER}_NO_EXPORT")
   set(EXPORT_FILE_NAME "${CMAKE_CURRENT_BINARY_DIR}/${BASE_NAME_LOWER}_export.h")
-  set(DEPRECATED_MACRO_NAME "${PREFIX}${BASE_NAME_UPPER}_DEPRECATED")
-  set(STATIC_DEFINE "${PREFIX}${BASE_NAME_UPPER}_STATIC_DEFINE")
-  set(NO_DEPRECATED_MACRO_NAME "${BASE_NAME_UPPER}_NO_DEPRECATED")
+  set(DEPRECATED_MACRO_NAME "${_GEH_PREFIX_NAME}${BASE_NAME_UPPER}_DEPRECATED")
+  set(STATIC_DEFINE "${_GEH_PREFIX_NAME}${BASE_NAME_UPPER}_STATIC_DEFINE")
+  set(NO_DEPRECATED_MACRO_NAME "${_GEH_PREFIX_NAME}${BASE_NAME_UPPER}_NO_DEPRECATED")
 
   if(_GEH_UNPARSED_ARGUMENTS)
     message(FATAL_ERROR "Unknown keywords given to GENERATE_EXPORT_HEADER(): \"${_GEH_UNPARSED_ARGUMENTS}\"")
   endif()
 
   if(_GEH_EXPORT_MACRO_NAME)
-    set(EXPORT_MACRO_NAME ${PREFIX}${_GEH_EXPORT_MACRO_NAME})
+    set(EXPORT_MACRO_NAME ${_GEH_PREFIX_NAME}${_GEH_EXPORT_MACRO_NAME})
   endif()
   if(_GEH_EXPORT_FILE_NAME)
     if(IS_ABSOLUTE _GEH_EXPORT_FILE_NAME)
@@ -259,13 +259,13 @@ macro(_DO_GENERATE_EXPORT_HEADER TARGET_LIBRARY)
     endif()
   endif()
   if(_GEH_DEPRECATED_MACRO_NAME)
-    set(DEPRECATED_MACRO_NAME ${PREFIX}${_GEH_DEPRECATED_MACRO_NAME})
+    set(DEPRECATED_MACRO_NAME ${_GEH_PREFIX_NAME}${_GEH_DEPRECATED_MACRO_NAME})
   endif()
   if(_GEH_NO_EXPORT_MACRO_NAME)
-    set(NO_EXPORT_MACRO_NAME ${PREFIX}${_GEH_NO_EXPORT_MACRO_NAME})
+    set(NO_EXPORT_MACRO_NAME ${_GEH_PREFIX_NAME}${_GEH_NO_EXPORT_MACRO_NAME})
   endif()
   if(_GEH_STATIC_DEFINE)
-    set(STATIC_DEFINE ${PREFIX}${_GEH_STATIC_DEFINE})
+    set(STATIC_DEFINE ${_GEH_PREFIX_NAME}${_GEH_STATIC_DEFINE})
   endif()
 
   if (_GEH_DEFINE_NO_DEPRECATED)
@@ -273,10 +273,10 @@ macro(_DO_GENERATE_EXPORT_HEADER TARGET_LIBRARY)
   endif()
 
   if (_GEH_NO_DEPRECATED_MACRO_NAME)
-    set(NO_DEPRECATED_MACRO_NAME ${PREFIX}${_GEH_NO_DEPRECATED_MACRO_NAME})
+    set(NO_DEPRECATED_MACRO_NAME ${_GEH_PREFIX_NAME}${_GEH_NO_DEPRECATED_MACRO_NAME})
   endif()
 
-  set(INCLUDE_GUARD_NAME "${PREFIX}${EXPORT_MACRO_NAME}_H")
+  set(INCLUDE_GUARD_NAME "${EXPORT_MACRO_NAME}_H")
 
   get_target_property(EXPORT_IMPORT_CONDITION ${TARGET_LIBRARY} DEFINE_SYMBOL)