ARM.md

Self-serving an ARM build

Mozilla [announced the intent] to deprecate ARMv7 HF builds of geckodriver in September 2018. This does not mean you can no longer use geckodriver on ARM systems, and this document explains how you can self-service a build for ARMv7 HF.

Assuming you have already checked out central, the steps to cross-compile ARMv7 from a Linux host system is as follows:

1. If you don’t have Rust installed:

   # curl https://sh.rustup.rs -sSf | sh
   

2. Install cross-compiler toolchain:

   # apt install gcc-arm-linux-gnueabihf libc6-armhf-cross libc6-dev-armhf-cross
   

3. Createa a new shell, or to reuse the existing shell:

   source $HOME/.cargo/env
   

4. Install rustc target toolchain:

   % rustup target install armv7-unknown-linux-gnueabihf
   

5. Put this in testing/geckodriver/.cargo/config:

   [target.armv7-unknown-linux-gnueabihf]
   linker = "arm-linux-gnueabihf-gcc"
   

6. Build geckodriver from testing/geckodriver:

   % cd testing/geckodriver
   % cargo build --release --target armv7-unknown-linux-gnueabihf