configure fix

diff --git a/configure.in b/configure.in
index 8529c43afb77edb883b93997a52162ac448fd382..b50f25bf0b8ace1f3d13e3ed6dcd17a4fd8973db 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -13,7 +13,7 @@ if test -z "$mkdir_p"; then
        AC_SUBST(mkdir_p)
 fi
 
-if test -z "$CFLAGS"; then
+if test "$ac_env_CFLAGS_set" != set; then
        CFLAGS="-Wall -W -g -O2"
 fi
 CPPFLAGS="$CPPFLAGS -D_FILE_OFFSET_BITS=64 -D_REENTRANT -DFUSE_USE_VERSION=22"