--libdir option default value

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Description

For years we use (for RPM build)

--libdir=/usr/lib64/php

excepted for embed SAPI which need the default path

--libdir=/usr/lib64

Since 0c07b0d this should not be necessary thanks to orig_libdir used for embded

orig_libdir=$libdir
AS_CASE([$libdir],
  ['${exec_prefix}/lib'], [libdir=$libdir/php])

AS_CASE([$(eval echo $datadir)],
  ['${prefix}/share'], [datadir=$datadir/php])

But the test does not work because of quote.

A proper test is probably (no quote + using php_libdir for lib64 case)

AS_CASE([$libdir],
  [${prefix}/${PHP_LIBDIR}], [libdir=$libdir/php])

Same issue with datadir, but this is only used for fpm/status.html page, other use datarootdir. Perhaps we can drop this check (to avoid change)

Help welcome on this

PHP Version

In PHP-8.4

Operating System

Linux

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ping @adsr for 0c07b0d
ping @petk for db9a7aa

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Fix proposal in PR #18596 only to master to avoid file placement in stable release
(in some build, FPM status page will move from /usr/share/fpm to /usr/share/php/fpm)