configure: warn on bad env variable use, don't error

Use XC_CHECK_BUILD_FLAGS instead XC_CHECK_USER_FLAGS.

diff --git a/m4/xc-cc-check.m4 b/m4/xc-cc-check.m4
index cd55405..777decf 100644 (file)
--- a/m4/xc-cc-check.m4
+++ b/m4/xc-cc-check.m4
@@ -59,7 +59,7 @@ dnl Private macro.
 
 AC_DEFUN([_XC_PROG_CC], [
   AC_REQUIRE([_XC_PROG_CC_PREAMBLE])dnl
-  AC_REQUIRE([XC_CHECK_USER_FLAGS])dnl
+  AC_REQUIRE([XC_CHECK_BUILD_FLAGS])dnl
   AC_REQUIRE([AC_PROG_INSTALL])dnl
   AC_REQUIRE([AC_PROG_CC])dnl
   AC_REQUIRE([AM_PROG_CC_C_O])dnl