From: Martin Wilck <mwilck@xxxxxxxx>
The test works only if the compiler actually errors out for an
unsupported warning option, which requires setting -Werror.
Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
---
Makefile.inc | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/Makefile.inc b/Makefile.inc
index 0c800ab3..d4d08fe9 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -81,7 +81,8 @@ INSTALL_PROGRAM = install
# Test if the C compiler supports the option.
# Evaluates to "option" if yes, and "fallback" otherwise.
TEST_CC_OPTION = $(shell \
- if echo 'int main(void){return 0;}' | $(CC) -o /dev/null -c "$(1)" -xc - >/dev/null 2>&1; \
+ if echo 'int main(void){return 0;}' | \
+ $(CC) -o /dev/null -c -Werror "$(1)" -xc - >/dev/null 2>&1; \
then \
echo "$(1)"; \
else \
--
2.23.0
--
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