Show the Git revision info in the title bar

CMakeLists.txt

@@ -41,6 +41,8 @@ endif()
 # Set where the binary files will be built.
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 
+include(SmwGitInfo)
+
 #-----------------------------------------------------------------------------
 #
 # Platform-specific settings

cmake/SmwGitInfo.cmake

@@ -0,0 +1,23 @@
+find_package(Git)
+if(GIT_FOUND)
+	execute_process(COMMAND
+	    "${GIT_EXECUTABLE}"
+	    --git-dir "${PROJECT_SOURCE_DIR}/.git"
+	    --work-tree "${PROJECT_SOURCE_DIR}"
+	    describe
+	    --always
+	    --dirty
+	    OUTPUT_STRIP_TRAILING_WHITESPACE
+	    OUTPUT_VARIABLE SMW_GIT_REVISION
+	)
+	execute_process(COMMAND
+	    "${GIT_EXECUTABLE}"
+	    --git-dir "${PROJECT_SOURCE_DIR}/.git"
+	    --work-tree "${PROJECT_SOURCE_DIR}"
+	    log -1
+	    --format=%cd
+	    --date=short
+	    OUTPUT_STRIP_TRAILING_WHITESPACE
+	    OUTPUT_VARIABLE SMW_GIT_DATE
+	)
+endif()

src/smw/CMakeLists.txt

@@ -182,6 +182,10 @@ add_subdirectory(gamemodes)
 add_subdirectory(ui)
 
 target_compile_features(smw PUBLIC cxx_std_14)
+target_compile_definitions(smw PRIVATE
+	GIT_REVISION="${SMW_GIT_REVISION}"
+	GIT_DATE="${SMW_GIT_DATE}"
+)
 
 if(NO_NETWORK)
 	target_compile_definitions(smw PRIVATE NETWORK_DISABLED)

src/smw/main.cpp

@@ -378,7 +378,7 @@ void main_game()
     //currently this only sets the title, not the icon.
     //setting the icon isn't implemented in sdl ->  i'll ask on the mailing list
     char title[128];
-    sprintf(title, "%s %s", TITLESTRING, VERSIONNUMBER);
+    sprintf(title, "%s %s %s %s", TITLESTRING, VERSIONNUMBER, GIT_REVISION, GIT_DATE);
     gfx_settitle(title);
     SDL_ShowCursor(SDL_DISABLE);