diff --git a/util/xcompile/xcompile b/util/xcompile/xcompile
index 1af02ad28a..d2509dbc36 100755
--- a/util/xcompile/xcompile
+++ b/util/xcompile/xcompile
@@ -172,9 +172,9 @@ detect_special_flags() {
 
 detect_compiler_runtime() {
 	test -z "$CLANG" || \
-	CC_RT_CLANG="`${CLANG} ${CFLAGS} -print-librt-file-name 2>/dev/null`"
+	CC_RT_CLANG="`${CLANG} ${CFLAGS_CLANG} -print-librt-file-name 2>/dev/null`"
 	test -z "$GCC" || \
-	CC_RT_GCC="`${GCC} ${CFLAGS} -print-libgcc-file-name`"
+	CC_RT_GCC="`${GCC} ${CFLAGS_GCC} -print-libgcc-file-name`"
 }
 
 report_arch_toolchain() {