The branch is recommended for (and has been tested on) powerpc, i686, x86_64 and aarch64 Darwin from Darwin9 (Mac OSX 10.5) through Darwin21 (macOS 12) (for architectures relevant to each version). The branch has also been tested to build cross-compilers between x86_64 and aarch64 and on aarch64-linux-gnu without regressions.
The branch contains a number of back-ports from GCC master that are required for Arm64 support and recommended for other Darwin architectures. Some of these are not suitable for application to the upstream branch and therefore will only be available on the Darwin-specific branch.
The support for Aarch64 (Arm64) remains experimental but is adequate now for many programs (and self-bootstrap).
Please see README for general information on the GCC sources.
Please see the GCC 11.3 release documentation for the implementation status of core language features.
Please see gcc/config/aarch64/darwinpcs.md for a description of the macOS AArch64 (Arm64) ABI support.
Please report issues for this branch to: https://github.com/iains/gcc-11-branch/issues
The current release is GCC-12.1-darwin-r1. (June 2022)
This release:
- Fixes a critical bug in the Arm64 port (related to Issue #3, which is unfixed in Xcode toolchains in common use).
- Adds a new configure option
--with-darwin-extra-rpath=which allows a distribution to prepend a run path to the list automatically added by the compiler. This is to allow for cases where the distribution refers to installed libraries using symlinks from outside the installation paths. - Resolves a potential issue with library references where a minor GCC version is replaced by the next and the old version is deleted.
- Amends some of the system version processing to handle changes expected in macOS 13+.
- Improves interoperability with clang in mixed code projects.
Thanks to contributors and testers.
Release GCC-11.3-darwin-r1 (May 2022).
- Fix missing __float128 support in libgfortran.
Release GCC-11.3-darwin-r0 (May 2022).
Test results : iains#1 (comment)
Thanks to:
'FX' (https://github.com/fxcoudert) for the main part of the __float128 support, many test fixes and help in testing this release more widely.
Andrew Burgess (while at Embecosm) for the work on heap based trampolines.
Maxim Blinov (Embecosm) for work on modifications to GCC's function lowering code to enable better support of the Darwin Arm64 ABI.
Iain Sandoe, May 2022