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Cross-compiling means to build executables for a different OS or machine, and is accomplished with the target=... argument to scons. If you're using a normal cross-compiling build of gcc, then you will want to pass the target triple. Otherwise the gcc/cc etc in your $PATH should be appropriate for the target and you can write e.g. target=win32.

Unix to Windows[edit]

mxe is an awesome tool to set up a cross-compiler from Unix to Windows with a single command. It automatically downloads and builds a mingw-w64 build of gcc, and can also build a large array of common libraries and packages.

Install toolchain:

# Build gcc cross-compiling toolchain
cd /place/mxe/here
git clone
cd mxe
# libffi is an extra dependency FB uses by default; add CFLAGS=-DDISABLE_FFI to the 'make' line below to skip it.
make gcc libffi

# Build FB cross-compiling toolchain
# This assumes you already have a copy of FB installed somewhere; it augments it with libraries to target Windows.
cd /path/to/fbc/source/
make TARGET=i686-w64-mingw32.static prefix=/path/to/fbc/install rtlib gfxlib2 install-rtlib install-gfxlib2


# Assuming fbc is already in your PATH. You don't need a separate fbc install to target Windows!
scons target=i686-w64-mingw32.static -j4  # other arguments as desired

Although mxe can compile SDL and SDL_mixer, you don't need to, since we include the .dlls along with the source, and FB has translations of the include files. If you do want to re-compile SDL_mixer.dll, see Windows compiling requirements#SDL_mixer.dll for details.

Unix to Android[edit]

See Compiling for Android.