llvm lld flang wasi-runtimes 21.1.0-rc3 (pre-release) #234231
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Aug 21, 2025
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| @@ -6,8 +6,8 @@ class Llvm < Formula | |||
| head "https://github.com/llvm/llvm-project.git", branch: "main" | |||
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| stable do | |||
| url "https://github.com/llvm/llvm-project/releases/download/llvmorg-20.1.8/llvm-project-20.1.8.src.tar.xz" | |||
| sha256 "6898f963c8e938981e6c4a302e83ec5beb4630147c7311183cf61069af16333d" | |||
| url "https://github.com/llvm/llvm-project/releases/download/llvmorg-21.1.0-rc3/llvm-project-21.1.0-rc3.src.tar.xz" | |||
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Hitting OOM on arm64 Linux. Will try reducing parallel jobs.
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Halving jobs (4 -> 2) worked. Though run now takes ~5 hours while llvm@20 took ~2 hours and x86_64 takes ~3 hours. Some things I may try while we still have time before official release:
- Could try 3 jobs (
make_jobs - 1) and hope that falls within memory limit. - The OOM run1 lasted 2.5 hours so I think it almost finished and died on linking? Some options:
-DLLVM_PARALLEL_LINK_JOBS=1or-DLLVM_RAM_PER_LINK_JOB=10000(from LLVM docs)?- Lower memory flags for GNU ld or trying gold (though latter is deprecated)
Footnotes
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-DLLVM_RAM_PER_LINK_JOB=10000 (i.e. with 16GB runner then 1 link job) still hit OOM.
Will try 3 total jobs next and keep that if it works. If it fails, then will go back to 2 total jobs. Probably easier to tune this in a follow up PR.
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* drop pstl runtime - llvm/llvm-project@f8ed456 * reduce link jobs to work around OOM error on arm64 linux runner
* replace static with shared libraries on macOS * move post-installed symlink into bottle
Also link to LLVM libc++ when building with LLVM clang due to `std::__hash_memory` availability in newer header llvm/llvm-project@17d0569
Add SDKROOT to work around "fatal error: 'stdio.h' file not found"
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Trying out a pre-release run to see how many dependents are impacted. Can update to official release once available.
Planned LLVM 21.1.0 release date: Aug 26th
Formulae changes (beyond revision bump)
pstlruntime - llvm/llvm-project@f8ed456std::__hash_memoryavailability in newer header llvm/llvm-project@17d0569Rollups
TODO
llvm@20andlld@20- llvm@20 lld@20 20.1.8 (new formula) #234240llvm@20#234396llvm@20#234447llvm@20#234432llvm@20#234394flang- update for runtime, switch to shared libs on macOSllvm- OOM on arm64 linux