V8 started to depend on LLVM's libm
Nobody has claimed this yet.
Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 45/100
- Issue type
- Bug
- Clarity
- Mostly clear
- Activity status
- Quiet
- Tech stack
- cpp
- Domain
- build-system
Research direction
Start with the failing V8 build action and deps/v8/src/base/ieee754.cc, where the missing third_party/llvm-libc/src/shared/math.h include is reported. Review the linked Chromium change that introduced LLVM's libm dependency and inspect how this mirror obtains V8 sources. Done means the affected build completes without the missing-header error.
Written by the indexing model from the issue text.
Description
https://github.com/nodejs/node-v8/actions/runs/25719364307/job/75516558363
v8/out/Release/obj.target/v8_libbase/deps/v8/src/base/numbers/bignum-dtoa.o
../deps/v8/src/base/ieee754.cc:36:10: fatal error: 'third_party/llvm-libc/src/shared/math.h' file not found
36 | #include "third_party/llvm-libc/src/shared/math.h"
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
Broken since May 9. Caused by https://chromium-review.googlesource.com/c/v8/v8/+/7828379 which started using LLVM's libm in V8
- Dominant language
- Shell
- Stars
- 466
- Forks
- 75
- PR merge metrics
- No merged PRs in 30d
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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