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-rw-r--r--Source/cmEnableLanguageCommand.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/Source/cmEnableLanguageCommand.h b/Source/cmEnableLanguageCommand.h
index e4bb2517a..ee963f920 100644
--- a/Source/cmEnableLanguageCommand.h
+++ b/Source/cmEnableLanguageCommand.h
@@ -65,7 +65,12 @@ public:
"any of the extra variables that are created by the project command. "
"Example languages are CXX, C, Fortran. "
"If OPTIONAL is used, use the CMAKE_<languageName>_COMPILER_WORKS "
- "variable to check whether the language has been enabled successfully.";
+ "variable to check whether the language has been enabled successfully."
+ "\n"
+ "This command must be called on file scope (not inside a function) and "
+ "the language enabled can only be used in the calling project or its "
+ "subdirectories added by add_subdirectory(). Also note that at present, "
+ "the OPTIONAL argument does not work.";
}
cmTypeMacro(cmEnableLanguageCommand, cmCommand);