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Cross-Compiling-for-Debian-Based-Linux.md

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To build for a target architecture different than the host (e.g. using x64 to build for ARM), you'll need to do the following, in addition to the setup under How to Contribute:

One-Time Setup

  1. Install build toolchain and chroot/rootfs prerequisites:

    sudo apt-get install qemu qemu-user-static debootstrap gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf

  2. Create a chroot/rootfs for the target architecture:

    sudo qemu-debootstrap --arch=armhf --variant=minbase xenial rootfs

  3. Install libx11-dev on the chroot/rootfs:

    sudo chroot rootfs apt-get install -y libx11-dev

Build

Because cross-compiling isn't officially supported by the VSCode team, some workarounds are required to make the app build correctly:

  1. Point to the target toolchain on the build host:

    export CC=$(which arm-linux-gnueabihf-gcc)
export CXX="$(which arm-linux-gnueabihf-g++) -L$(pwd)/rootfs/usr/lib/arm-linux-gnueabihf/"

    note the -L linker argument pointing to the absolute path of libx11 on the chroot/rootfs

  2. Tell yarn you want to cross-compile native modules for ARM:

    export npm_config_arch=arm

  3. Build VSCode and create a .deb file (for easier installation on the target device) as usual:

    yarn
yarn run gulp vscode-linux-arm-min
yarn run gulp vscode-linux-arm-build-deb