1 files changed, 27 insertions, 0 deletions
diff --git a/build-aux/lint-h b/build-aux/lint-h
new file mode 100755
index 0000000..26ac13d
--- /dev/null
+++ b/build-aux/lint-h
@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# build-aux/lint-h - Lint checks for C header files
+#
+# Copyright (C) 2024-2025  Luke T. Shumaker <lukeshu@lukeshu.com>
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+RED=$(tput setaf 1)
+RESET=$(tput sgr0)
+
+err() {
+	printf "${RED}%s${RESET}: %s\n" "$1" "$2" >&2
+	r=1
+}
+
+r=0
+for filename in "$@"; do
+	dscname=$(./build-aux/get-dscname "$filename")
+	guard=${dscname//'/'/'_'}
+	guard=${guard//'.'/'_'}
+	guard="_${guard^^}_"
+	if ! { grep -Fxq "#ifndef ${guard}"      "$filename" &&
+	       grep -Fxq "#define ${guard}"      "$filename" &&
+	       grep -Fxq "#endif /* ${guard} */" "$filename"; }; then
+		err "$filename" "does not have ${guard} guard"
+	fi
+done
+exit $r