The branch is recommended for (and has been tested on) powerpc, i686, x86_64 and aarch64 Darwin from Darwin9 (Mac OSX 10.5) through Darwin22 (macOS 13)
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 general GCC 12.3 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-12-branch/issues
The current release is GCC-12.3-darwin-r0. (May 2023)
This release includes:
- All upstream fixes since 12.2.
- All fixes from GCC-12.1-darwin-r1
- A fix for handling non-bootstrap builds with clang (issue #18).
- Some local fixes for building and testing D.
- Some fixes for handling newer SDKs with unguarded blocks use and Apple-local deprecations of some Posix interfaces.
- libsanitizer is disabled on Darwin22+ pending a solution to locating dyld in the shared cache.
The current release is GCC-12.2-darwin-r0. (August 2022)
This release includes:
- All upstream fixes since 12.1.
- Improves the build to omit runpaths from the runtime libraries.
- A fix for PR106435 which improves the handling of cross-TU global initializers for thread-local variables.
- Fixes for builds and testing (include Ada) on Darwin8 (MacOSX 10.4, Tiger).
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.
GCC-12.1-darwin-r0. (May 2022)
Test results : #1 (comment)
Thanks to:
- 'FX' (https://github.com/fxcoudert) for the main part of the
__float128support, 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.