Created attachment 158498 [details]
The full output of `cmake -B build && cmake --build build` on my macOS system

SUMMARY

KCoreAddons uses the `SOCK_CLOEXEC` flag, which is Linux-specific and not available on macOS, causing compilation for macOS to fail with `use of undeclared identifier: 'SOCK_CLOEXEC'` in src/lib/util/ksignalhandler.cpp.


STEPS TO REPRODUCE
1. Clone https://invent.kde.org/frameworks/kcoreaddons
2. Run `cmake -B build`
3. Run `cmake --build build`

OBSERVED RESULT
Build fails with:
/Users/qyriad/code/builds/kcoreaddons/src/lib/util/ksignalhandler.cpp:37:45: error: use of undeclared identifier 'SOCK_CLOEXEC'
    if (::socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, KSignalHandlerPrivate::signalFd)) {



EXPECTED RESULT
Build completes successfully without error.

SOFTWARE/OS VERSIONS
macOS: 13.3.1 (x86_64)
KDE Frameworks Version: master, or 5.105.0
Qt Version: Qt6 and Qt5 both have the same result