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-rw-r--r--lib/libc++experimental/Makefile4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/libc++experimental/Makefile b/lib/libc++experimental/Makefile
index 53c33018b535..8d1e4b58bbe2 100644
--- a/lib/libc++experimental/Makefile
+++ b/lib/libc++experimental/Makefile
@@ -20,6 +20,8 @@ CXXFLAGS+= -nostdinc++
CXXFLAGS+= -nostdlib
CXXFLAGS+= -D_LIBCPP_BUILDING_LIBRARY
CXXFLAGS+= -DLIBCXXRT
-CXXSTD= c++14
+.if empty(CXXFLAGS:M-std=*)
+CXXFLAGS+= -std=c++14
+.endif
.include <bsd.lib.mk>