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-rw-r--r--lib/libc++/Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/libc++/Makefile b/lib/libc++/Makefile
index 6e95823..26877ee 100644
--- a/lib/libc++/Makefile
+++ b/lib/libc++/Makefile
@@ -53,7 +53,9 @@ cxxrt_${_S}:
WARNS= 0
CFLAGS+= -I${HDRDIR} -I${LIBCXXRTDIR} -nostdlib -DLIBCXXRT
+.if !defined(CXXFLAGS) || ${CXXFLAGS:M-std=*}" == ""
CXXFLAGS+= -std=c++0x
+.endif
DPADD= ${LIBCXXRT}
LDADD= -lcxxrt
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