[27.x] Backports #32479

1. 
   fanquake commented at 1:31 pm on May 13, 2025: member

   Backports

   • #32070
   • #32187
   • #32286
   • #32439
2. test: Handle empty string returned by CLI as None in RPC tests

   Github-Pull: #32286
   Rebased-From: a4041c77f0e20d004524868e70ff12508832c9eb

   992c7cad46
3. refactor: Remove spurious virtual from final ~CZMQNotificationInterface

   Github-Pull: #32187
   Rebased-From: fa69c42fdf0aeec0546e951bc6132ab630edb9d4

   418bee8f9d
4. build: use make < 3.82 syntax for define directive

   From the GNU make 3.82 release announcement:
   
   * The 'define' make directive now allows a variable assignment operator
     after the variable name, to allow for simple, conditional, or appending
     multi-line variable assignment.
   
   macOS ships with 3.81. This caused the multiprocess config options
   to be ignored.
   
   Fixes #32068
   
   Co-authored-by: Ryan Ofsky <ryan@ofsky.org>
   
   Github-Pull: #32070
   Rebased-From: 9157d9e449870851ef455e077249ac46fc2df24c

   f52ab00f69
5. fanquake added this to the milestone 27.3 on May 13, 2025
6. 
   DrahtBot commented at 1:31 pm on May 13, 2025: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/32479.

   Reviews

   See the guideline for information on the review process. A summary of reviews will appear here.

   LLM Linter (✨ experimental)

   Possible typos and grammar issues:

   • accomodate -> accommodate [correct spelling]

   drahtbot_id_4_m

7. DrahtBot added the label Backport on May 13, 2025
8. 
   fanquake commented at 2:02 pm on May 13, 2025: member

   This is failing in the macOS CI. An issue with Boost Process:

    0 configure:34786: checking whether Boost.Process can be used
    1configure:34817: g++ -std=gnu++11 -std=c++20 -o conftest  -Wno-error=narrowing  -isystem /usr/local/include -DBOOST_MULTI_INDEX_DISABLE_SERIALIZATION  -pthread conftest.cpp  >&5
    2conftest.cpp:64:9: error: no type named 'opstream' in namespace 'boost::process'
    3    bp::opstream stdin_stream;
    4    ~~~~^
    5conftest.cpp:65:18: error: use of undeclared identifier 'stdout_stream'; did you mean 'stdin_stream'?
    6    bp::ipstream stdout_stream;
    7                 ^~~~~~~~~~~~~
    8                 stdin_stream
    9conftest.cpp:64:18: note: 'stdin_stream' declared here
   10    bp::opstream stdin_stream;
   11                 ^
   12conftest.cpp:65:17: error: expected ';' after expression
   13    bp::ipstream stdout_stream;
   

9. test: Add imports for util bpf_cflags

   This is required for the next commit.
   
   Github-Pull: #32336
   Rebased-From: fa0c1baaf89805182de56d6a2e8eed2265a94b40

   1fc7b9d260
10. scripted-diff: Use bpf_cflags

    -BEGIN VERIFY SCRIPT-
    
     ren() { sed --regexp-extended -i "s/$1/$2/g" $( git grep --extended-regexp -l "$1" ) ; }
    
     ren 'cflags=\["-Wno-error=implicit-function-declaration"\]' 'cflags=bpf_cflags()'
    
    -END VERIFY SCRIPT-
    
    Github-Pull: #32336
    Rebased-From: facb9b327b9da39ce1e09ed56199be9efb19b5b8

    882166642c
11. fanquake force-pushed on May 13, 2025
12. DrahtBot added the label CI failed on May 13, 2025
13. 
    fanquake commented at 4:54 pm on May 13, 2025: member

    This is failing in the macOS CI. An issue with Boost Process:

    Looks this is because Boost Process V1 compat was broken in Boost 1.88.0, https://github.com/boostorg/process/issues/480, which is the version being used in the macOS CI here, and --enable-external-signer is passed globally in the CI.

14. ci: remove --enable-external-signer

    Boost 1.88.0 (installed in the macOS CI) broke compat with Boost Process
    V1. As `--enable-external-signer` is set in the CI, this causes the
    macOS CI to fail. Remove `--enable-external-signer` from the CI.

    e0af7bffff
15. fanquake force-pushed on May 19, 2025
16. 
    fanquake commented at 12:56 pm on May 19, 2025: member

    I’ve added a commit to drop --enable-external-signer from the global CI config.
17. fanquake force-pushed on May 21, 2025
18. fanquake marked this as ready for review on May 21, 2025
19. 
    fanquake commented at 11:58 am on May 21, 2025: member

    Added a note to the release notes as well.
20. guix: accomodate migration to codeberg

    See https://guix.gnu.org/blog/2025/migrating-to-codeberg/.
    
    When interacting with the old repo you may now also see:
    ```bash
    warning: redirecting to https://codeberg.org/guix/guix/
    ```
    
    Github-Pull: #32439
    Rebased-From: d5ca4d4fd713a9f7e17e074a1e37dda99bbb09fc

    a328170e09
21. doc: update release notes for 27.x 2b20f189bc
22. fanquake force-pushed on May 29, 2025

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Backport CI failed

Milestone
27.3