Cross libgccjit compilers for use with rustc_codegen_gcc

Dependencies

This requires the git version of crosstool-ng, at least if you want to build for m68k, since it’s not released in the 1.26.0 version.

Build instructions

1. Install crosstool-ng.

2. Move to the directory containing the crosstool-ng config of your choice: cd m68k-unknown-linux-gnu

3. Generate the config from the default config: ct-ng defconfig. This will generate a .config file used in the next step.

4. Build the compiler: ct-ng build.

5. The compiler will be in $HOME/x-tools/m68k-unknown-linux-gnu/bin.