Cross compilation

Cross compiling the daemon for other architectures (arm)

The following steps are for compile OpenSnitch on Debian testing for armhf. You may run into incompabilities on other distros (like Debian sid).

$ sudo dpkg --add-architecture armhf
$ sudo apt update
$ sudo apt install libnetfilter-queue-dev:armhf libmnl-dev:armhf
$ sudo apt install gcc-8-arm-linux-gnueabihf gcc-8-arm-linux-gnueabihf-base gcc-8-plugin-dev-arm-linux-gnueabi gcc-arm-linux-gnueabi

$ export CC=arm-linux-gnueabi-gcc
$ export CGO_LDFLAGS="-L/usr/lib/arm-linux-gnueabihf/"
$ GOOS=linux GOARM=7 GOARCH=arm CGO_ENABLED=1 PKG_CONFIG_PATH="/usr/lib/arm-linux-gnueabihf/pkgconfig/"  go build -o opensnitchd-arm -x .

arm64

Discussion regarding running the daemon on arm64: #18

$ sudo dpkg --add-architecture arm64
$ sudo apt update
$ sudo apt install libnetfilter-queue-dev:arm64 libmnl-dev:arm64
$ apt install gccgo-aarch64-linux-gnu
$ export CC=aarch64-linux-gnu-gcc
$ export CGO_LDFLAGS="-L/usr/lib/aarch64-linux-gnu/"
$ GOOS=linux GOARCH=arm64 CGO_ENABLED=1 PKG_CONFIG_PATH="/usr/lib/aarch64-linux-gnu/pkgconfig/"  go build -o opensnitchd-arm64 .

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