From 91f32a9fbae9c432fb9f19a465b9b8c8c3b15300 Mon Sep 17 00:00:00 2001
From: Luke Benstead <kazade@gmail.com>
Date: Thu, 8 Apr 2021 20:58:35 +0100
Subject: [PATCH] Refactor version file generation

---
 CMakeLists.txt     | 9 +++++++++
 GL/version.c.in    | 2 ++
 include/GL/glkos.h | 3 +++
 3 files changed, 14 insertions(+)
 create mode 100644 GL/version.c.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 41afb0f..241a723 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,8 +30,17 @@ set(
     GL/texture.c
     GL/util.c
     GL/yalloc/yalloc.c
+    ${CMAKE_CURRENT_BINARY_DIR}/version.c
 )
 
+execute_process(
+    COMMAND git describe --abbrev=4 --dirty --always --tags
+    OUTPUT_VARIABLE GLDC_VERSION
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+configure_file(GL/version.c.in ${CMAKE_CURRENT_BINARY_DIR}/version.c)
+
 if(PLATFORM_DREAMCAST)
     set(SOURCES ${SOURCES} GL/platforms/sh4.c)
 else()
diff --git a/GL/version.c.in b/GL/version.c.in
new file mode 100644
index 0000000..7e37b06
--- /dev/null
+++ b/GL/version.c.in
@@ -0,0 +1,2 @@
+
+const char* GLDC_VERSION = "@GLDC_VERSION@";
diff --git a/include/GL/glkos.h b/include/GL/glkos.h
index dd290bb..184ecaf 100644
--- a/include/GL/glkos.h
+++ b/include/GL/glkos.h
@@ -4,6 +4,9 @@
 
 __BEGIN_DECLS
 
+extern const char* GLDC_VERSION;
+
+
 /*
  * Dreamcast specific compressed + twiddled formats.
  * We use constants from the range 0xEEE0 onwards