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-rw-r--r--sys/conf/kmod.mk4
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/conf/kmod.mk b/sys/conf/kmod.mk
index 92a2dde..c753254 100644
--- a/sys/conf/kmod.mk
+++ b/sys/conf/kmod.mk
@@ -70,8 +70,8 @@ OBJCOPY?= objcopy
.if ${CC} == "icc"
CFLAGS:= ${CFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
.else
-. if ${CFLAGS:M-O[23s]} != ""
-CFLAGS+= -fno-strict-aliasing
+. if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
+CFLAGS+= -fno-strict-aliasing
. endif
WERROR?= -Werror
.endif
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