The Makefile variable NATIVE defaults to 'on', in which case
-march=native is used. This disables it.
Index: Makefile
===================================================================
RCS file: /cvs/ports/math/ntl/Makefile,v
retrieving revision 1.40
diff -u -p -r1.40 Makefile
--- Makefile 21 Mar 2016 08:17:33 -0000 1.40
+++ Makefile 20 Apr 2016 03:49:47 -0000
@@ -3,6 +3,7 @@
COMMENT = Victor Shoup's Number Theory Library
DISTNAME = ntl-9.7.0
+REVISION = 0
SHARED_LIBS = ntl 8.0 # 0.0
CATEGORIES = math
@@ -25,7 +26,8 @@ CONFIGURE_STYLE = simple
CONFIGURE_ARGS = CXX="${CXX}" CXXFLAGS="${CXXFLAGS}" \
NTL_GMP_LIP=on GMP_PREFIX="${LOCALBASE}" \
LIBntl_VERSION=${LIBntl_VERSION} \
- SHARED=on DEF_PREFIX="${LOCALBASE}"
+ SHARED=on DEF_PREFIX="${LOCALBASE}" \
+ NATIVE=off
WRKBUILD = ${WRKSRC}/src
