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-rw-r--r--sys/targets/targets.go2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/targets/targets.go b/sys/targets/targets.go
index 7255f7963..c61e679bc 100644
--- a/sys/targets/targets.go
+++ b/sys/targets/targets.go
@@ -862,7 +862,7 @@ func (target *Target) lazyInit() {
}
func checkFlagSupported(target *Target, flag string) bool {
- cmd := exec.Command(target.CCompiler, "-x", "c++", "-", "-o", "/dev/null", flag)
+ cmd := exec.Command(target.CCompiler, "-x", "c++", "-", "-o", "/dev/null", "-Werror", flag)
cmd.Stdin = strings.NewReader(simpleProg)
return cmd.Run() == nil
}