detect gcc/g++ 5.4

diff --git a/m4/boost.m4 b/m4/boost.m4
index 31e2233efdffa1da0f17d545d182ad756536e145..12b7ad6a0f14ed0b5ff091bb1e8d214bb57d657b 100644 (file)
--- a/m4/boost.m4
+++ b/m4/boost.m4
@@ -1424,6 +1424,8 @@ if test x$boost_cv_inc_path != xno; then
     _BOOST_gcc_test(6, 1) \
     _BOOST_mingw_test(6, 0) \
     _BOOST_gcc_test(6, 0) \
+    _BOOST_mingw_test(5, 4) \
+    _BOOST_gcc_test(5, 4) \
     _BOOST_mingw_test(5, 3) \
     _BOOST_gcc_test(5, 3) \
     _BOOST_mingw_test(5, 2) \