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Cross-compiling with MXE (http://mxe.cc)
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.
1. See the MXE website 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 in usr/.
You need to `make gcc' for basic compiler and then 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
freetype
gcc
gcc-gmp
gcc-mpc
gcc-mpfr
gettext
glew
jpeg
libiconv
libpng
libtool
mingwrt
openal
portaudio
sdl
sdl_image
sdl_ttf
tiff
w32api
xz
zlib
4. Now `cd' to colobot directory. 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 .'
The new CMake files in colobot should detect that MXE is being used and they will
modify flags, paths, etc. You should not run into any problems.
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 should `strip bin/colobot.exe'.
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