creates a header file with upto date git info

git_build_info.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+# --- Date / time (no spaces/colons) ---
+DATESTAMP=$(date +"%Y%m%d_%H%M%S")
+
+# --- Git info (with fallbacks if not a git repo) ---
+if git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
+    GITHASH=$(git rev-parse --short HEAD 2>/dev/null || echo "no-git")
+    BRANCH=$(git rev-parse --abbrev-ref HEAD 2>/dev/null || echo "no-branch")
+    REPO_PATH=$(git rev-parse --show-toplevel 2>/dev/null || echo ".")
+    REPO_NAME=$(basename "$REPO_PATH")
+    REMOTE_URL=$(git remote get-url origin 2>/dev/null || echo "no-remote")
+else
+    GITHASH="no-git"
+    BRANCH="no-branch"
+    REPO_NAME="no-repo"
+    REMOTE_URL="unknown"
+fi
+
+# --- Host and user ---
+HOSTNAME=$(hostname)
+USER_NAME=${USER:-unknown}
+
+# --- Where to put the header (CubeIDE default) ---
+OUT_DIR="." # "Core/Inc"
+OUT_FILE="${OUT_DIR}/build_info.h"
+
+mkdir -p "$OUT_DIR"
+
+cat <<EOF > "$OUT_FILE"
+/* Auto-generated: DO NOT EDIT */
+#ifndef BUILD_INFO_H
+#define BUILD_INFO_H
+
+#define BUILD_DATE       "${DATESTAMP}"
+#define BUILD_GIT_HASH   "${GITHASH}"
+#define BUILD_BRANCH     "${BRANCH}"
+#define BUILD_REPO       "${REPO_NAME}"
+#define BUILD_HOST       "${HOSTNAME}"
+#define BUILD_USER       "${USER_NAME}"
+#define REMOTE_URL       "${REMOTE_URL}"
+
+#endif /* BUILD_INFO_H */
+EOF
+
+echo "Generated ${OUT_FILE}"
+cat ${OUT_FILE}