glibc-2.23.90-9.fc25 removed the type union wait from its API. This
used to be a BSD compatibility extension, but it has long since been
removed from the BSDs. It was never part of the POSIX process
interfaces, and its implementation relies on GCC extensions.
If your package is portable to anything else than GNU/Linux (which
includes Android) and has a configure check for union wait, the
configure check will fail and the package will automatically switch to
the POSIX APIs (like it does everywhere else).
If your package fails to compile, you need to replace “union wait” with
“int”. If code uses members of union wait, you need to switch that to
the status accessor macros such as WIFEXITED, WEXISTATUS, and so.
Please let me know if you need help with that.
I expect that very few packages will be affected. We only know about
tcsh so far, and a patch is available.
The ABI is unchanged, existing binaries continue to work.
Florian
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