From 5c5de0e30e04204ab042a62e035a488163517094 Mon Sep 17 00:00:00 2001
From: Jelle Raaijmakers <jelle@ladybird.org>
Date: Wed, 8 Oct 2025 12:40:18 +0200
Subject: [PATCH] Meta: Add COMMIT file to cpack archives

This new file in the root of the archives contains the git commit hash,
to be used by e.g. the js-benchmarks webhook to determine which commit
was used to build the utilities.
---
 Utilities/CMakeLists.txt | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Utilities/CMakeLists.txt b/Utilities/CMakeLists.txt
index 2afb4d2c5f..dedc30e88f 100644
--- a/Utilities/CMakeLists.txt
+++ b/Utilities/CMakeLists.txt
@@ -39,9 +39,28 @@ if (ASSERT_FAIL_HAS_INT OR EMSCRIPTEN)
     target_compile_definitions(test262-runner PRIVATE ASSERT_FAIL_HAS_INT)
 endif()
 
+# Determine the Git commit hash (fallback to 'unknown' if not a Git repo)
+execute_process(
+    COMMAND git rev-parse HEAD
+    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+    OUTPUT_VARIABLE GIT_COMMIT_HASH
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+    ERROR_QUIET
+)
+if (NOT GIT_COMMIT_HASH)
+    set(GIT_COMMIT_HASH "unknown")
+endif()
+
+# Write it to the build directory
+set(GIT_COMMIT_FILE "${CMAKE_BINARY_DIR}/COMMIT")
+file(WRITE "${GIT_COMMIT_FILE}" "${GIT_COMMIT_HASH}\n")
+
 if (NOT CMAKE_SKIP_INSTALL_RULES)
     install(TARGETS js COMPONENT js)
+    install(FILES "${GIT_COMMIT_FILE}" COMPONENT js DESTINATION .)
+
     install(TARGETS wasm COMPONENT wasm)
+    install(FILES "${GIT_COMMIT_FILE}" COMPONENT wasm DESTINATION .)
 
     set(CPACK_GENERATOR "TGZ")
     set(CPACK_STRIP_FILES TRUE)