Conversation
Since the zig build system we've been building gmp for the x86_64 macos build with ADX instructions that were introduced in the Intel Broadwell microarchitecture. This caused illegal instruction exceptions on some older Intel macs such as my mid 2015 macbook that's running a Haswell with no ADX support. This commit "downgrades" the x86_64 macos build to be compatible with Haswell, this should cover almost all users for now.
joemfb
approved these changes
Sep 26, 2025
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Since the zig build system we've been building gmp for the x86_64 macos build with ADX instructions that were introduced in the Intel Broadwell microarchitecture. This caused illegal instruction exceptions on some older Intel macs such as my mid 2015 macbook that's running a Haswell with no ADX support. This commit "downgrades" the x86_64 macos build to be compatible with Haswell, this should cover almost all users for now.