--- a/configure.in	Mon Sep 19 06:18:13 2011
+++ b/configure.in	Mon Sep 19 06:19:08 2011
@@ -58,7 +58,9 @@
 # not 64 bit clean in cross-compile
 AC_CHECK_SIZEOF(void *, 4)
 
-CFLAGS="-g -Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes  -Wmissing-prototypes -Wnested-externs  -Wshadow -Wpointer-arith -Wno-cast-qual -Wcast-align -Wwrite-strings"
+if [ "x$GCC" = xyes ]; then
+  CFLAGS="-g -Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes  -Wmissing-prototypes -Wnested-externs  -Wshadow -Wpointer-arith -Wno-cast-qual -Wcast-align -Wwrite-strings"
+fi
 
 if test "x$enable_maintainer_mode" = "xyes"; then
 DEBUG_FLAGS='-debug'