Enable ifunc checks on FreeBSD 12+

[Freaky]

This was disabled in 2019 due to problems reported in FreeBSD 11. The original report (PHP bug 77284) includes a comment that FreeBSD 12 worked - which also happens to be the first version ifunc use appeared in libc.

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A similar patch is currently in FreeBSD ports lang/php83, but backporting to earlier versions will only be done if nothing crops up.

[Freaky]

This was requested in #12273.

[Freaky]

(I also welcome guidance if there's a better way of doing this!)

[5u623l20]

With my hat of the php maintainer in the FreeBSD ports tree @Freaky I think you can also safely remove the comment about FreeBSD 12. As of now any FreeBSD versions prior to 12 are not supported as they have reached EOL and in fact 12 will reach EOL in end of this year.

[devnexen]

With my hat of the php maintainer in the FreeBSD ports tree @Freaky I think you can also safely remove the comment about FreeBSD 12.

While this makes no sense in the freebsd ports context indeed, however in our side it does since as mentioned in the ticket we have at least a FreeBSD 9.2 user, it's fair to assume there is other FreeBSD pre-12 users around, EOL or not.

[devnexen]

ping @petk :)

[petk]

Thanks for the fix, @Freaky. Sounds good to me to merge this with version for now. We can remove this in the future. No worries about the FreeBSD versions less than 12 not being supported anymore upstream. We still have some UNIX System V here and there in this build system noted :D But it's being cleaned on the regular basis.

[devnexen]

Thank you !