-# All files contain sccsid strings. To compile a library that does
-# not include these strings one must add -Dlint to DEFS below.
+# All files contain sccsid strings, but these are not compiled into
+# library objects by default, as a space-saving measure. To produce
+# a library that contains these strings in every object except
+# system call stubs, add -DLIBC_SCCS to DEFS below; to put these
+# strings into system call stubs, use -DSYSLIBC_SCCS.