get version info from project file

CMakeLists.txt

@@ -1,5 +1,8 @@
 cmake_minimum_required(VERSION "3.15" FATAL_ERROR)
-project(tmx2gba VERSION "0.3")
+project(tmx2gba
+	VERSION      "0.7"
+	DESCRIPTION  "Simple CLI utility for converting Tiled (.tmx) maps to GBA-friendly charmaps."
+	HOMEPAGE_URL "https://github.com/ScrelliCopter/tmx2gba")
 
 # Options
 option(TMX2GBA_DKP_INSTALL "Install into DEVKITPRO prefix" OFF)

src/CMakeLists.txt

@@ -6,6 +6,10 @@ add_executable(tmx2gba
 	swriter.hpp swriter.cpp
 	tmx2gba.cpp)
 
+configure_file(config.h.in config.h @ONLY)
+target_sources(tmx2gba PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+target_include_directories(tmx2gba PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+
 set_target_properties(tmx2gba PROPERTIES CXX_STANDARD 20)
 
 # Enable strong warnings

src/config.h.in

@@ -0,0 +1,6 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#define TMX2GBA_VERSION "@PROJECT_VERSION@"
+
+#endif//CONFIG_H

src/tmx2gba.cpp

@@ -5,13 +5,12 @@
 #include "convert.hpp"
 #include "headerwriter.hpp"
 #include "swriter.hpp"
+#include "config.h"
 #include <iostream>
 #include <map>
 #include <algorithm>
 
 
-static const char* versionStr = "tmx2gba version 0.3, (c) 2015-2022 a dinosaur";
-
 struct Arguments
 {
 	std::string inPath, outPath;
@@ -148,7 +147,7 @@ int main(int argc, char** argv)
 	}
 	if (p.showVersion)
 	{
-		std::cout << versionStr << std::endl;
+		std::cout << "tmx2gba version " << TMX2GBA_VERSION << ", (c) 2015-2024 a dinosaur" << std::endl;
 		return 0;
 	}