#! /bin/sh

# ----------------------------------------------------------------------------
# "THE BEER-WARE LICENSE" (Revision 42):
# Joerg Wunsch wrote this file.  As long as you retain this notice you
# can do whatever you want with this stuff. If we meet some day, and you think
# this stuff is worth it, you can buy me a beer in return.
# ----------------------------------------------------------------------------

# Script to cross-compile a MinGW32 executable under unixish host.
# Run this script from within the tools/ subdirectory.
# Override MINGW32_PREFIX and LIBUSB_PREFIX from the commandline
# when invoking the script, like
#
# env LIBUSB_PREFIX="$HOME/dos/ProgramFiles/LibUSB-Win32" ./build-mingw32.sh
#
# The LibUSB-Win32 package is shipped as a self-installing
# executable; it can be unpacked using Wine, and typically
# extracts into the Wine environment.
#
# libelf can be cross-compiled, and installed into the MinGW32
# target environment if desired.

MINGW32_PREFIX=${MINGW32_PREFIX:-/usr/local/mingw32}
LIBUSB_PREFIX=${LIBUSB_PREFIX:-/WINDOWS/ProgramFiles/LibUSB-Win32}

for CC in mingw32-gcc i686-w64-mingw32-gcc i586-mingw32msvc-gcc
do
    touch foo.c
    if ${CC} -c foo.c 2> /dev/null
    then
	rm -f foo.*
	break
    fi
done
tgt=$(expr "$CC" : "\(.*\)-gcc")

BUILDDIR=build-mingw32
mkdir -p ${BUILDDIR} || { echo "Cannot create build dir $BUILDDIR"; exit 1; }

cd ${BUILDDIR} || { echo "Cannot chdir to $BUILDDIR"; exit 1; }

LDFLAGS="-L${MINGW32_PREFIX}/lib -L${LIBUSB_PREFIX}/lib/gcc -L/tmp/libftdi1-1.3git_devkit_mingw32_13Dec2015/lib"
CPPFLAGS="-I${MINGW32_PREFIX}/include -I${LIBUSB_PREFIX}/include -I/tmp/libftdi1-1.3git_devkit_mingw32_13Dec2015/include"

env \
    CC="${CC}" \
    CPPFLAGS="${CPPFLAGS}" \
    LDFLAGS="${LDFLAGS}" \
    ../../configure \
    --host=$(../../config.guess) \
    --target=${tgt}

${MAKE:-make} all