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-rw-r--r--Source/cmTargetIncludeDirectoriesCommand.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/Source/cmTargetIncludeDirectoriesCommand.h b/Source/cmTargetIncludeDirectoriesCommand.h
index a84ddd0..2968618 100644
--- a/Source/cmTargetIncludeDirectoriesCommand.h
+++ b/Source/cmTargetIncludeDirectoriesCommand.h
@@ -71,6 +71,14 @@ public:
"The following arguments specify include directories. Specified "
"include directories may be absolute paths or relative paths. "
"Repeated calls for the same <target> append items in the order called."
+ "If SYSTEM is specified, the compiler will be told the "
+ "directories are meant as system include directories on some "
+ "platforms (signalling this setting might achieve effects such as "
+ "the compiler skipping warnings, or these fixed-install system files "
+ "not being considered in dependency calculations - see compiler "
+ "docs). If SYSTEM is used together with PUBLIC or INTERFACE, the "
+ "INTERFACE_SYSTEM_INCLUDE_DIRECTORIES target property will be "
+ "populated with the specified directories."
"\n"
"Arguments to target_include_directories may use \"generator "
"expressions\" with the syntax \"$<...>\". "