27d9763b1b fix: add `linux64_multiprocess` `BUILD_TARGET` to matrix, mend C(XX) (Kittywhiskers Van Gogh)
26cc5a1c90 ci: use underscore to separate variant name from target triple (Kittywhiskers Van Gogh)
d0131a5259 trivial: sort `BUILD_TARGET` on GitHub and in `matrix.sh` alphabetically (Kittywhiskers Van Gogh)
4f1b5c165b merge bitcoin#28954: Reduce use of bash -c (Kittywhiskers Van Gogh)
a49162ffae merge bitcoin#27314: Fix handling of `CXX=clang++` when building `qt` package (Kittywhiskers Van Gogh)
Pull request description:
## Additional Information
* [bitcoin#27314](https://github.com/bitcoin/bitcoin/pull/27314) has been backported in this PR as [bitcoin#25838](https://github.com/bitcoin/bitcoin/pull/25838) (backported in [dash#6384](https://github.com/dashpay/dash/pull/6384)) broke Clang depends builds.
* [bitcoin#28954](https://github.com/bitcoin/bitcoin/pull/28954) has been backported to fix a problem associated with multiprocess runs ([build](https://gitlab.com/dashpay/dash/-/jobs/8396677312#L2921)).
* Support for multiprocess builds were enabled _proper_ in [dash#6143](https://github.com/dashpay/dash/pull/6143) but unfortunately, the configuration params for multiprocess builds were not processed by CI as the build variant was not added to `matrix.sh` ([source](6a51ab271d/ci/dash/matrix.sh)). This is evident by comparing two variants with Boost::Process enablement (`--with-boost-process`), `linux64_fuzz` ([source](6a51ab271d/ci/test/00_setup_env_native_fuzz.sh (L19))) and `linux64_multiprocess` ([source](6a51ab271d/ci/test/00_setup_env_native_multiprocess.sh (L13))).
Looking at a `develop` (6a51ab271d) build, the fuzz build has it enabled ([source](https://gitlab.com/dashpay/dash/-/jobs/8394892905#L737)) while the multiprocess build doesn't ([source](https://gitlab.com/dashpay/dash/-/jobs/8394892909#L1524)) despite both scripts having the enablement argument.
## Breaking Changes
None expected.
## Checklist:
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas **(note: N/A)**
- [x] I have added or updated relevant unit/integration/functional/e2e tests **(note: N/A)**
- [x] I have made corresponding changes to the documentation **(note: N/A)**
- [x] I have assigned this pull request to a milestone _(for repository code-owners and collaborators only)_
ACKs for top commit:
PastaPastaPasta:
utACK 27d9763b1b
UdjinM6:
utACK 27d9763b1b
Tree-SHA512: 3e2fb72d4211875a162d3aecb994c5bd43b2f6d9fea0804d7e00a38a034672730f9351ceb9256ace38e32f7ef81527c8a034a870e5099a277dfd06f9fa54b480
a9cfd39390