Building XRoar for Windows

What’s needed to cross-compile for Windows under Debian Linux (generally “testing”).

Debian packages

g++-mingw-w64
gcc-mingw-w64
mingw-w64-tools

AFAICT that’s it - the rest should come as dependencies. You might also want to install wine to try out the end result.

Other packages

In general, create a subdirectory like “build-w32” or “build-w64”, change into it and run the configure line documented. Then make, make install.

Note all these are configured to build static libraries only (so they end up in the final binary), and that I tend to disable features that aren’t required. For this reason, you may want to maintain this environment separately in a chroot/container/VM.

SDL2

Cross-platform development library
https://github.com/libsdl-org/SDL
http://libsdl.org/


../configure --prefix=/usr/i686-w64-mingw32 --host=i686-w64-mingw32 \
    --enable-static --disable-shared \
    CFLAGS="-Ofast -g" CPPFLAGS="-D__USE_MINGW_ANSI_STDIO=1"

../configure --prefix=/usr/x86_64-w64-mingw32 --host=x86_64-w64-mingw32 \
    --enable-static --disable-shared \
    CFLAGS="-Ofast -g" CPPFLAGS="-D__USE_MINGW_ANSI_STDIO=1"

libsndfile

Audio file support
https://github.com/erikd/libsndfile.git
http://libsndfile.github.io/libsndfile/

../configure --prefix=/usr/i686-w64-mingw32 --host=i686-w64-mingw32 \
    --enable-static --disable-shared --disable-external-libs \
    CFLAGS="-Ofast -g" CPPFLAGS="-D__USE_MINGW_ANSI_STDIO=1" \
    ac_cv_func_malloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yes

../configure --prefix=/usr/x86_64-w64-mingw32 --host=x86_64-w64-mingw32 \
    --enable-static --disable-shared --disable-external-libs \
    CFLAGS="-Ofast -g" CPPFLAGS="-D__USE_MINGW_ANSI_STDIO=1" \
    ac_cv_func_malloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yes

tre

POSIX regex matching library
https://github.com/laurikari/tre/

../configure --prefix=/usr/i686-w64-mingw32 --host=i686-w64-mingw32 \
    --enable-static --disable-shared \
    --disable-agrep --disable-approx \
    CFLAGS="-Ofast -g" CPPFLAGS="-D__USE_MINGW_ANSI_STDIO=1"

../configure --prefix /usr/x86_64-w64-mingw32 --host=x86_64-w64-mingw32 \
    --enable-static --disable-shared \
    --disable-agrep --disable-approx \
    CFLAGS="-Ofast -g" CPPFLAGS="-D__USE_MINGW_ANSI_STDIO=1"

Building XRoar

I have scripts to do all this for me, but here’s the configure lines I end up using. Note that I explicitly disable all the stuff not needed under Windows. Also, this is a link-time-optimised build: if you’re debugging, you might want to change CFLAGS/LDFLAGS.

ac_cv_func_malloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yes ../configure \
    --host=i686-w64-mingw32 --prefix=/usr/i686-w64-mingw32 \
    --with-sdl-prefix="/usr/i686-w64-mingw32" \
    --enable-filereq-cli --without-gtk2 --without-gtkgl --without-alsa \
    --without-oss --without-pulse --without-joydev \
    CFLAGS="-std=c11 -Ofast -flto=auto -D__USE_MINGW_ANSI_STDIO=1" \
    LDFLAGS="-std=c11 -Ofast -flto=auto -D__USE_MINGW_ANSI_STDIO=1"

ac_cv_func_malloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yes ./configure \
    --host=x86_64-w64-mingw32 --prefix=/usr/x86_64-w64-mingw32 \
    --with-sdl-prefix="/usr/x86_64-w64-mingw32" \
    --enable-filereq-cli --without-gtk2 --without-gtkgl --without-alsa \
    --without-oss --without-pulse --without-joydev \
    CFLAGS="-std=c11 -Ofast -flto=auto -D__USE_MINGW_ANSI_STDIO=1" \
    LDFLAGS="-std=c11 -Ofast -flto=auto -D__USE_MINGW_ANSI_STDIO=1"