add Makefile with build instructions and dependencies for SDL2 and SDL2_ttf

Author: arkenidar

Makefile

@@ -0,0 +1,12 @@
+# SDL2 Game GUI with buttons and text rendering
+
+# Requirements : compilation requires SDL2 and SDL2_ttf development libraries .
+
+# On Windows with MSYS2 + MinGW64: pacman -S mingw-w64-x86_64-SDL2 mingw-w64-x86_64-SDL2_ttf --needed
+# On Debian/Ubuntu: sudo apt install libsdl2-dev libsdl2-ttf-dev
+# On Fedora: sudo dnf install SDL2-devel SDL2_ttf-devel
+# On Arch Linux: sudo pacman -S sdl2 sdl2_ttf
+# On macOS: brew install sdl2 sdl2_ttf
+
+build:
+	g++ -o sdl-game-gui sdl-game-gui.cpp $(shell pkg-config --cflags --libs SDL2_ttf)