Apple ld64 for Debian.
Sources are kept in separate submodules ld64, tapi and xar, each with branches of raw imports from Apple OSS and different branches with fixes on top. Changes in those repos are kept to an absolute minimum in order to keep forward-porting feasible.
This repo contains only the Makefile and custom headers required to bridge the gap between Darwin/BSD and Linux (headers ripped from Apple OSS go in the submodules).
The idea is to use the checkra1n SDK's "dev" targets for consistency (i.e. we're always cross-compiling). Builds are done against arm64 and x86_64 Debian 11. checkra1n itself is built for a wider range of targets, but for the toolchain we have more strict requirements.
The final outputs are one ld64 binary and one .deb package per architecture.
The targets arm64 and x86_64 build everything for just one architecture, all builds for both (the default).
The Makefile has a whole bunch of env vars that can be used to customise the build, but usually these three should suffice:
LLVM_CONFIGARM64_SDKX86_64_SDK
Example (assuming you've already cloned this repo):
git clone https://github.com/checkra1n/SDK.git /tmp/SDK
/tmp/SDK/make.sh all-linux-gnu-dev all
git submodule update --init
LLVM_CONFIG=path/to/llvm-config ARM64_SDK=/tmp/SDK/build/arm64-linux-gnu-dev X86_64_SDK=/tmp/SDK/build/x86_64-linux-gnu-dev make
Binaries are available for arm64 and x86_64, built against Debian 11 (should be compatible with Ubuntu 20.04 or newer).
Builds are done via Actions and uploaded to Releases as well as the checkra1n APT repo.
