From f2a49073bbb2337f73a53347eacba3cd7abb900c Mon Sep 17 00:00:00 2001
From: Alibek Omarov <a1ba.omarov@gmail.com>
Date: Tue, 2 Apr 2024 19:45:17 +0300
Subject: [PATCH] Query git and set XASH_BUILD_COMMIT and XASH_BUILD_BRANCH
 macros

---
 CMakeLists.txt | 18 ++++++++++++++++++
 wscript        |  6 +++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 15f8ba2d..e26d2c25 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -88,6 +88,24 @@ endif()
 # MAIN BUILD CODE \
 ###################\
 
+execute_process(COMMAND "git" "describe" "--dirty" "--always"
+	WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        OUTPUT_VARIABLE GIT_VERSION
+        OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+execute_process(COMMAND "git" "rev-parse" "--abbrev-ref" "HEAD"
+	WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        OUTPUT_VARIABLE GIT_BRANCH
+        OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+if(GIT_VERSION)
+	add_definitions(-DXASH_BUILD_COMMIT="${GIT_VERSION}")
+endif()
+
+if(GIT_BRANCH)
+	add_definitions(-DXASH_BUILD_BRANCH="${GIT_BRANCH}")
+endif()
+
 file(STRINGS "mod_options.txt" MOD_OPTIONS_STRINGS REGEX "^([A-Za-z0-9_-]+)=([A-Za-z0-9_-]+)\ \#\ (.*)$")
 foreach(LINE IN LISTS MOD_OPTIONS_STRINGS)
 	# file() itself doesn't populate CMAKE_MATCH_<n>, so
diff --git a/wscript b/wscript
index eae81555..41b6cb15 100644
--- a/wscript
+++ b/wscript
@@ -55,7 +55,11 @@ def configure(conf):
 	if conf.env.COMPILER_CC == 'msvc':
 		conf.load('msvc_pdb')
 
-	conf.load('msvs msdev subproject clang_compilation_database strip_on_install enforce_pic')
+	conf.load('msvs msdev subproject clang_compilation_database strip_on_install enforce_pic gitversion')
+	if conf.env.GIT_VERSION:
+		conf.define('XASH_BUILD_COMMIT', conf.env.GIT_VERSION)
+	if conf.env.GIT_BRANCH:
+		conf.define('XASH_BUILD_BRANCH', conf.env.GIT_BRANCH)
 
 	enforce_pic = True # modern defaults
 	conf.check_pic(enforce_pic)