build/flags: Use auto-detection for all warning flags

1 files changed, 9 insertions, 0 deletions

diff --git a/build/flags/Wmissing-var-decls.c b/build/flags/Wmissing-var-decls.c
new file mode 100644
index 0000000..5c20cc6
--- /dev/null
+++ b/build/flags/Wmissing-var-decls.c
@@ -0,0 +1,9 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+/// _CFLAGS += -Wmissing-variable-declarations
+/// -Werror
+
+int main(void) {
+	return 0;
+}