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-rw-r--r--math/sage/Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/math/sage/Makefile b/math/sage/Makefile
index 67d0694d49cc..d51dd1c472cb 100644
--- a/math/sage/Makefile
+++ b/math/sage/Makefile
@@ -97,6 +97,10 @@ post-install:
.include <bsd.port.pre.mk>
+.if ${OSVERSION} < 701106
+BROKEN= POSIX semaphores are required, and the support only works in FreeBSD 7-STABLE and later
+.endif
+
MAKE_ENV+= MAKE="${MAKE} -j${MAKE_JOBS_NUMBER}"
.ifdef MAINTAINER_MODE