ENH: Adding SYSTEM option to INCLUDE_DIRECTORIES command. This addresses bug #3462.

1 files changed, 5 insertions, 2 deletions

diff --git a/Source/cmIncludeDirectoryCommand.h b/Source/cmIncludeDirectoryCommand.h
index a22bc0e13b..9247bbbaa4 100644
--- a/Source/cmIncludeDirectoryCommand.h
+++ b/Source/cmIncludeDirectoryCommand.h
@@ -61,13 +61,16 @@ public:
   virtual const char* GetFullDocumentation()
     {
     return
-      "  INCLUDE_DIRECTORIES([AFTER|BEFORE] dir1 dir2 ...)\n"
+      "  INCLUDE_DIRECTORIES([AFTER|BEFORE] [SYSTEM] dir1 dir2 ...)\n"
       "Add the given directories to those searched by the compiler for "
       "include files. By default the directories are appended onto "
       "the current list of directories. This default behavior can be "
       "changed by setting CMAKE_INCLUDE_DIRECTORIES_BEFORE to ON. "
       "By using BEFORE or AFTER you can select between appending and "
-      "prepending, independent from the default. ";
+      "prepending, independent from the default. "
+      "If the SYSTEM option is given the compiler will be told that the "
+      "directories are meant as system include directories on some "
+      "platforms.";
     }
   
   cmTypeMacro(cmIncludeDirectoryCommand, cmCommand);