Add macOS and MinGW build instructions to readme.md

readme.md

@@ -24,8 +24,8 @@ the game, including new versions, custom maps and much more.
 Originally written by Magnus Auvinen.
 
 
-Building on Linux
+Building on Linux or macOS
-=================
+==========================
 
 Installing dependencies
 -----------------------
@@ -39,6 +39,9 @@ Installing dependencies
     # Arch Linux (doesn't have pnglite in its repositories)
     sudo pacman -S --needed base-devel cmake freetype2 git glu python sdl2 wavpack
 
+    # macOS
+    sudo brew install cmake freetype sdl2
+
 
 Downloading repository
 ----------------------
@@ -108,6 +111,30 @@ For subsequent builds you only have to click the button with the green arrow
 again.
 
 
+Building on Windows with MinGW
+==============================
+
+Download and install MinGW with at least the following components:
+
+- mingw-developer-toolkit-bin
+- mingw32-base-bin
+- mingw32-gcc-g++-bin
+- msys-base-bin
+
+Also install [Git](https://git-scm.com/downloads) (for downloading the source
+code), [Python](https://www.python.org/downloads/) and
+[CMake](https://cmake.org/download/).
+
+Open CMake ("CMake (cmake-gui)" in the start menu). Click "Browse Source"
+(first line) and select the directory with the Teeworlds source code. Next,
+click "Browse Build" and create a subdirectory for the build (e.g. called
+"build"). Then click "Configure". Select "MinGW Makefiles" as the generator and
+click "Finish". Wait a bit (until the progress bar is full). Then click
+"Generate".
+
+You can now build Teeworlds by executing `mingw32-make` in the build directory.
+
+
 Building with bam, guides for all operating systems
 ===================================================