bootstrap-zig

The purpose of this project is to start with minimum system dependencies and end with a fully operational Zig compiler for any target.

Version Information

This repository copies sources from upstream. Patches listed below. Use git to find and inspect the patch diffs.

• LLVM, LLD, Clang 13.0.1
• zlib 1.2.12
• Zig 0.10.0-dev.2073+59905a62f

For other versions, check the git tags of this repository.

Patches

• Remove unused test/ files in order to make tarball less bloated.
• LLD: add additional include directory to Zig's libunwind.
• zlib: delete unused files
• zlib: CMakeLists.txt: delete the ability to build a shared library

Host System Dependencies

• C++ compiler capable of building LLVM, Clang, and LLD from source (GCC 5.1+ or Clang)
• cmake 3.13.4 or later
• make
• POSIX system (bash, mkdir, cd)
• Python 3

Build Instructions

build -j1 <arch>-<os>-<abi> baseline

All parameters are required:

• -j1: Replace with your jobs parameter to make.
• <arch>-<os>-<abi>: Replace with one of the Supported Triples below, or use native for the <arch> value (e.g. native-linux-gnu) to use the native architecture.
• baseline: Replace with a -mcpu parameter of Zig. baseline means it will target a generic CPU for the target. native means it will target the native CPU. See the Zig documentation for more details.

If it succeeds, the output will be in out/zig-triple-mcpu/.

Supported Triples

If you try a "not tested" one and find a problem please file an issue, and a pull request linking to the issue in the table.

If you try a "not tested" one and find that it works, please file a pull request changing the status to "OK".

If you try an "OK" one and it does not work, please check if there is an existing issue, and if not, file an issue.

Note: Generally, for Linux targets, we prefer the musl libc builds over the glibc builds here, because musl builds end up producing a static binary, which is more portable across Linux distributions.

Other Notable Targets Known to Work

• arm-linux-musleabi with mcpu value of generic+v6kz. This produces a build of Zig that runs on the RPi 1 and RPi Zero.
  • If you want to produce a build for this CPU exactly, use arm1176jzf_s.