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-rw-r--r--Source/cmAddLibraryCommand.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/Source/cmAddLibraryCommand.h b/Source/cmAddLibraryCommand.h
index e5f27cb51..59354b0f5 100644
--- a/Source/cmAddLibraryCommand.h
+++ b/Source/cmAddLibraryCommand.h
@@ -138,6 +138,19 @@ public:
"Some native build systems may not like targets that have only "
"object files, so consider adding at least one real source file "
"to any target that references $<TARGET_OBJECTS:objlib>."
+ "\n"
+ "The signature\n"
+ " add_library(<name> ALIAS <target>)\n"
+ "creates an alias, such that <name> can be used to refer to <target> "
+ "in subsequent commands. The <name> does not appear in the generated "
+ "buildsystem as a make target. The <target> may not be an IMPORTED "
+ "target or an ALIAS. Alias targets can be used as linkable targets, "
+ "targets to read properties from. They can also be tested for "
+ "existance with the "
+ "regular if(TARGET) subcommand. The <name> may not be used to modify "
+ "properties of <target>, that is, it may not be used as the operand of "
+ "set_property, set_target_properties, target_link_libraries etc. An "
+ "ALIAS target may not be installed of exported."
;
}