fix 1f52a03082b2816826bc5bd8c241f5d016d15395

diff --git a/acinclude.m4 b/acinclude.m4
index dd815c9db0f3f3272535dcc635e6c93d55272006..db146aaf2fd6920a30c55968013651df4378553d 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -2699,7 +2699,7 @@ EOF
     break
    fi
    for var in CFLAGS CXXFLAGS CPPFLAGS LDFLAGS EXTRA_LDFLAGS_PROGRAM LIBS CC CXX; do
-    if test `expr $CURRENT_ARG : ".*${var}.*"` != 0;
+    if test `expr "X$CURRENT_ARG" : "X.*${var}.*"` != 0;
        then
       continue 2
        fi