[*] basic in-house cpp linting

Signed-off-by: lizzie <lizzie@eden-emu.dev>

tools/cpp-lint.sh

@@ -0,0 +1,40 @@
+#!/bin/sh -ex
+
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# tools/../
+ROOTDIR=$(CDPATH='' cd -- "$(dirname -- "$0")/../" && pwd)
+
+die() {
+    echo "-- $*" >&2
+    exit 1
+}
+
+usage() {
+    cat <<EOF
+Usage: $0 [command]
+
+Dumb script that serves as a ad-hoc cpp-linter
+
+Commands:
+    once    Check for #pragma once prescence in header files
+
+EOF
+}
+
+while :; do
+	case "$1" in
+	once)
+        find "$ROOTDIR/src" -type f -name "*.h" -exec grep -L "#pragma once" {} +
+		break
+		;;
+	osdef)
+        find "$ROOTDIR/src" -type f -name "*.h" -exec grep -nw "ANDROID" {} +
+		break
+		;;
+	*) usage ;;
+	esac
+
+	shift
+done