Glibc tests occansionally fail due to a timeout because:
1. The hardware is slower than the developers expected.
2. Some tests use multiple or even all CPU cores internally, for e.g.
with 8 active CPU cores we may end up running 8 tests (due to -j8)
each of them uses 8 cores in the worst case, resulting a severe
congestion.
We used to run "expect -c 'spawn ls'" for this in Binutils, but then we
thought expect test suite was enough as such a simple PTY test. However
expect test can fail due to some different reason, so add back a simple
test using Python pty module before building expect. Now we no longer
need to consider expect test critical (IIRC there was a report saying
one expect test failed for unknown reason but all other things OK).
$(realpath /dev/shm) will return the absolute path of the target of
/dev/shm, thus the command will work for both absolute symlink and
relative symlink.
It does no good: normally we have -v for chown so once it no longer has
an effect we can know, but in this case these chown commands will never
have no effect. And a huge amount of output with -v wastes the server
storage and bandwidth (for both the server and the people reading the
build logs).
Let's change our policy to match other "rolling release" distros and
ease the procedure to fix Glibc security vulnerabilities.
Squashed the commits in xry111/update-glibc branch to keep the history
clean.
Add more rationale about --enable-stack-protector, and remove the stale explanation of --with-headers
Update upstream fixes patch
To include fixes for CVE-2023-6246, CVE-2023-6779, and CVE-2023-6780.
"gcc(1)" is really not a file name.
Use <ulink> and link to the online man page on
https://man.archlinux.org/ so the user can refer to the man pages more
easily.
The change is done via a sed command and long lines are wrapped
manually.
