zy-kkk opened a new pull request, #69136:
URL: https://github.com/apache/doris/pull/69136
### What problem does this PR solve?
Issue Number: N/A
Related PR: N/A
Problem Summary: With the macOS 27 SDK, math.h requests only INFINITY and
NAN from float.h. The libc++ wrapper include guard then prevents later includes
from defining DBL_EPSILON and other floating-point macros. This breaks S2
headers in BE unity builds and Boost headers on branch-4.1. Force the full
float.h header into macOS C++ compilations before both source headers and the
PCH, including builds with PCH disabled.
### Release note
None
### Check List (For Author)
- Test: Manual compiler probes reproduce the missing macros with LLVM 20 and
22 on SDK 27 and restore them with early float.h; SDK 26.5 passes. The original
master unity TU reproduces all three DBL_EPSILON errors. BE CMake
configure/generate and build hygiene checks pass. The build entry point
subsequently stops at Maven repository permissions. Full BE build and fixed
master unity TU validation are pending.
- Behavior changed: Yes, macOS C++ compilations include float.h first.
- Does this need documentation: No.
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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