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+# Cross-compiling with MXE
+
+MXE works for any BSD-compatible system (including Linux).
+It is a complete package with cross-compiler to Win32 (a MinGW variant)
+and includes scripts to automatically download and build many 3rd party
+libraries and tools.
+
+To cross-compile Colobot using MXE:
+
+1. See the MXE website (http://mxe.cc) for list of required packages and make sure
+   you have them installed.
+
+2. Download MXE and unpack it in the directory, where you want to keep it
+   permanently. During the build, MXE will write that path to many files,
+   so moving that directory can be tricky.
+
+3. `cd` to the MXE root directory.
+   It already contains a universal Makefile for everything.
+   Usage is simply `make name_of_package`.
+   It will automatically check for dependencies, etc.
+   The packages will be installed in the MXE directory under `usr/`.
+
+   You need to `make gcc` first for basic compiler and then do the same
+   for some additional libraries. In the end, you should have the following
+   packages installed (this is the final listing of `usr/installed/`):
+    * binutils
+    * boost
+    * bzip2
+    * check-requirements
+    * expat
+    * flac
+    * flac
+    * freetype
+    * gcc
+    * gcc-gmp
+    * gcc-mpc
+    * gcc-mpfr
+    * gettext
+    * glew
+    * jpeg
+    * libiconv
+    * libpng
+    * libsndfile
+    * libtool
+    * mingwrt
+    * ogg
+    * openal
+    * portaudio
+    * sdl
+    * sdl_image
+    * sdl_ttf
+    * tiff
+    * vorbis
+    * w32api
+    * xz
+    * zlib
+
+4. Now `cd` to directory with colobot sources. To cross-compile a CMake project,
+   you have to specify a CMake toolchain file. MXE has such file in MXE's directory:
+   `usr/i686-pc-mingw32/share/cmake/mxe-conf.cmake`
+   Toolchain file is specified thus:`cmake -DCMAKE_TOOLCHAIN_FILE=/path/to/mxe-conf.cmake .`
+   CMake files in Colobot should detect that MXE is being used and they will
+   modify flags, paths, etc. as required. You should not run into any problems.
+   *Note:* you may also want to use a separate out-of-source build directory for MXE.
+
+5. `make` should now compile the game with the resulting exe in `bin/colobot.exe`.
+   The exe is linked against all libraries *statically*, so there are no dependencies
+   on external DLLs. However, the resulting binary will be huge with all these libraries,
+   so you might want to do: `strip bin/colobot.exe`.