Replaced an ugly hack to selectively disable warnings

in contributed sources with just a hack made possible
by bsd.sys.mk,v 1.33.  This is better because it just
nulls out the warning flags rather than adding gcc(1)
specific -w option to CFLAGS.

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/libc/Makefile b/lib/libc/Makefile
index ef7abce6d7da..e39540644c38 100644
--- a/lib/libc/Makefile
+++ b/lib/libc/Makefile
@@ -97,3 +97,6 @@ libkern.${MACHINE_ARCH}:: ${KMSRCS}
 .endif
 
 .include <bsd.lib.mk>
+
+# Disable warnings in contributed sources.
+CWARNFLAGS:=	${.IMPSRC:Ngdtoa_*.c:C/^.+$/${CWARNFLAGS}/}