[31.x] More Backports #36221

1. 
   fanquake commented at 4:07 PM on September 10, 2026: member

   Backports:

   • #36218
2. build: avoid pipe2 on Darwin (for now)

   macOS 27 will support pipe2 at runtime, and Xcode 27 (and Command Line
   Tools) support it at compile time. This means a macOS < 27 system will
   detect support for pipe2, but then binaries will crash at runtime, as
   pipe2 is not available.
   
   Just avoid pipe2 on macOS for now, and continue using pipe. Note that
   the compilation also produces availability warnings, and this will need
   to be backported.
   
   Github-Pull: #36218
   Rebased-From: 9c7748315d3124d1abe6a4606743cd9274beee66

   233b120632
3. DrahtBot added the label Backport on Sep 10, 2026
4. 
   DrahtBot commented at 4:07 PM on September 10, 2026: contributor

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   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/36221.

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5. hebasto approved
6. 
   hebasto commented at 4:26 PM on September 10, 2026: member

   ACK 1cc9ed38e45d85f27c2a527c929738420eb3725a.

7. fanquake added this to the milestone 31.2 on Sep 10, 2026
8. doc: update release notes for v31.x 475a98e961
9. in doc/release-notes.md:91 in 1cc9ed38e4

     87 | @@ -88,6 +88,7 @@ Notable changes
     88 |  ### Build
     89 |  
     90 |  - #35769 depends, zeromq: Apply upstream patch
     91 | +- #36218 build: avoid pipe2 on Darwin (for now) - #36218
   

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   hebasto commented at 4:59 PM on September 10, 2026:

   Duplicated "#36218"?

10. fanquake force-pushed on Sep 11, 2026
11. hebasto approved
12. 
    hebasto commented at 9:51 AM on September 11, 2026: member

    re-ACK 475a98e9617c23b36a8fd02b315c0aaf03d5f88b.

13. fanquake merged this on Sep 11, 2026
14. fanquake closed this on Sep 11, 2026

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15. fanquake deleted the branch on Sep 11, 2026

Milestone
31.2