Travis: Cross-compile a Win64 build

.travis.deps

@@ -9,7 +9,10 @@ echo -e 'deb http://ftp.us.debian.org/debian/ wheezy main\ndeb http://security.d
 sudo rm -r /etc/apt/sources.list.d
 curl https://ftp-master.debian.org/keys/archive-key-7.0.asc | sudo apt-key add -
 sudo apt-get update -qq
-sudo apt-get install -y build-essential autoconf automake libtool libcurl4-gnutls-dev libjansson-dev uthash-dev $EXTRA_DEPS
+if [ -z "$CROSS_BINPKGS" ]; then
+	DEV_DEPS='libcurl4-gnutls-dev libjansson-dev uthash-dev'
+fi
+sudo apt-get install -y build-essential autoconf automake libtool $DEV_DEPS $EXTRA_DEPS
 
 if [ -n "$UBUNTU_DEPS" ]; then
 	cat <<\EOF | sudo tee '/etc/apt/sources.list'
@@ -22,3 +25,11 @@ EOF
 	sudo apt-get update -qq
 	sudo apt-get install -y $UBUNTU_DEPS
 fi
+
+if [ -n "$CROSS_BINPKGS" ]; then
+	wget "https://github.com/luke-jr/cross-binpkgs/archive/${CROSS_BINPKGS}.zip"
+	unzip "${CROSS_BINPKGS}.zip"
+	for f in "cross-binpkgs-${CROSS_BINPKGS}"/*/*; do
+		sudo tar -C "/usr/${CROSS_BINPKGS}/" -xjvpf "$f"
+	done
+fi

.travis.script

@@ -1,11 +1,21 @@
 test "x$1" = "xI-am-okay-with-destroying-my-system" || exit 1
 set -ex
 
-export CC=$(which "$myCC")
+if [ -n "$CROSS_BINPKGS" ]; then
+	myCC="${CROSS_BINPKGS}-gcc"
+	CC_ARGS="-I/usr/${CROSS_BINPKGS}/usr/include"
+	export LDFLAGS="-L/usr/${CROSS_BINPKGS}/usr/lib -L/usr/${CROSS_BINPKGS}/usr/bin"
+	export PKG_CONFIG_PATH="/usr/${CROSS_BINPKGS}/usr/lib/pkgconfig/"
+	export PKG_CONFIG_SYSROOT_DIR="/usr/${CROSS_BINPKGS}"
+fi
+
+export CC="$(which "$myCC") $CC_ARGS"
 $CC --version
 
 ./autogen.sh
 ./configure $GLOBAL_CONFIGURE_ARGS $CONFIGURE_ARGS
 make CFLAGS="$GLOBAL_CFLAGS $BUILD_CFLAGS" $MAKEOPTS
-make check
-sudo make install
+if [ -z "$CROSS_BINPKGS" ]; then
+	make check
+	sudo make install
+fi

.travis.yml

@@ -15,6 +15,8 @@ matrix:
       env: myCC='clang' UBUNTU_DEPS='libhidapi-dev linux-libc-dev' EXTRA_DEPS='pkg-config libncursesw5-dev libudev-dev libusb-1.0-0-dev libevent-dev libmicrohttpd-dev libi2c-dev yasm libsensors4-dev' BUILD_CFLAGS='-Werror' CONFIGURE_ARGS='--enable-other-drivers --enable-scrypt --without-system-libbase58 --enable-tool'
     - compiler: ": pkgconf"
       env: myCC='clang' UBUNTU_DEPS='libhidapi-dev linux-libc-dev pkgconf' EXTRA_DEPS='libncursesw5-dev libudev-dev libusb-1.0-0-dev libevent-dev libmicrohttpd-dev libi2c-dev yasm libsensors4-dev' BUILD_CFLAGS='-Werror' CONFIGURE_ARGS='--enable-other-drivers --enable-scrypt --without-system-libbase58 --enable-tool'
+    - compiler: ": MinGW64"
+      env: UBUNTU_DEPS='gcc-mingw-w64-x86-64' EXTRA_DEPS='pkg-config yasm' CROSS_BINPKGS='x86_64-w64-mingw32' BUILD_CFLAGS='-Werror' CONFIGURE_ARGS='--enable-other-drivers --enable-scrypt --without-system-libbase58 --host=x86_64-w64-mingw32 --disable-knc --disable-bfsb --disable-jingtian --disable-metabank --disable-minergate'
     - compiler: ": Std SHA2"
       env: myCC='clang' UBUNTU_DEPS='libhidapi-dev linux-libc-dev' EXTRA_DEPS='pkg-config libncursesw5-dev libudev-dev libusb-1.0-0-dev libevent-dev libmicrohttpd-dev libi2c-dev yasm libsensors4-dev' CONFIGURE_ARGS=''
     - compiler: ": Std scrypt"