Move optimizer into core

This only moves the files, adjusts the build system, exports APIs
and does minor fixups to make sure the code builds.

This does not yet try to make the

Move optimizer into core

This only moves the files, adjusts the build system, exports APIs
and does minor fixups to make sure the code builds.

This does not yet try to make the optimizer usable independently
of opcache.

Closes GH-6642.

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Fixed bug #80377

Make sure the $PHP_THREAD_SAFETY variable is always available
when configuring extensions. It was previously available for
phpized extensions, but for in-tree builds

Fixed bug #80377

Make sure the $PHP_THREAD_SAFETY variable is always available
when configuring extensions. It was previously available for
phpized extensions, but for in-tree builds it was being set
too late.

Then, use $PHP_THREAD_SAFETY instead of $enable_zts to check for
ZTS in bundled extensions, which makes sure these checks also
work for phpize builds.

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Revert "Fixed bug #80377"

This reverts commit fc26ad9b1220fdfd7db15ecaff5e7c38283c55b6.

Fixed bug #80377

Use $PHP_THREAD_SAFETY instead of $enable_zts to check for ZTS.
This variable is also available for phpize builds, while enable_zts
is only present for in-tree build

Fixed bug #80377

Use $PHP_THREAD_SAFETY instead of $enable_zts to check for ZTS.
This variable is also available for phpize builds, while enable_zts
is only present for in-tree builds.

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Check for shm_open() in libroot to support Haiku

Resides on libroot (system runtime) on this platform.

Closes GH-5892.

Fail in `./configure` when no opcache shm backends exist

This can be seen when the `./configure` step fails to detect `HAVE_SHM_*`,
e.g. due to missing a necessary dependency to compile

Fail in `./configure` when no opcache shm backends exist

This can be seen when the `./configure` step fails to detect `HAVE_SHM_*`,
e.g. due to missing a necessary dependency to compile the test scripts.
(Run `./configure`, run `yum install libtool-ltdl-devel` for missing dependencies,
then run `make`, and php can end up built with 0 shared memory opcache caches)

Give a clearer error message than `unknown`
Searching for `opcache "Fatal Error Unable to allocate shared memory segment of"
"unknown: No such file or directory"` reveals issues such as
https://github.com/termux/termux-packages/issues/2234

Closes GH-5615

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Fixed bug #79255 (PHP cannot be compiled with enable JIT)

Revert "Fixed bug #79255 (PHP cannot be compiled with enable JIT)"

This reverts commit de6984edd5ce7fa2b2f365b5ae770507ef42022d.

Reverting to unbreak 32-bit CI.

Fixed bug #79255 (PHP cannot be compiled with enable JIT)

Merge branch 'PHP-7.4'

* PHP-7.4:
add librt for opcache

add librt for opcache

Optimizer cleanup

- all rules from pass2 moved to pass1
- all JMP unrelated rules from pass3 moved to pass1
- pass3 keeps only JMP optimization rules
- pass2.c is removed
- p

Optimizer cleanup

- all rules from pass2 moved to pass1
- all JMP unrelated rules from pass3 moved to pass1
- pass3 keeps only JMP optimization rules
- pass2.c is removed
- pass1_5.c remaned to pass1.c ("_5" was related to PHP 5)

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Merge branch 'PHP-7.4'

* PHP-7.4:
Update changelog
Remove unused HAVE_SHM_MMAP_ZERO and HAVE_SHM_MMAP_FILE

Remove unused HAVE_SHM_MMAP_ZERO and HAVE_SHM_MMAP_FILE

Closes GH-4424

Merge branch 'PHP-7.4'

* PHP-7.4:
Sync functions checks

Sync functions checks

Removed unused checks:
- mbsinit check removed, HAVE_MBSINIT removed (not used in php-src)
- mempcpy check removed, HAVE_MEMPCPY removed (not used in php-src an

Sync functions checks

Removed unused checks:
- mbsinit check removed, HAVE_MBSINIT removed (not used in php-src)
- mempcpy check removed, HAVE_MEMPCPY removed (not used in php-src anymore since
560ed89bfbb56526251e9bd2fbcb27e5932641d8 which uses PHP's own implementation)
- strpncpy check removed, added via a8c9e893b6911c785f698d724b2ff61e7aebb737 and
not used.
- setpgid check removed since HAVE_SETPGID is not used

Moved to a central configure.ac:
- fpclass
- mbrlen moved to configure.ac (since the HAVE_MBRLEN is used accross the php-src)
- sigprocmask
- getcwd
- getwd
- glob
- strfmon
- nice

Duplicated checks removed:
- gethostname
- getlogin
- getpwuid_r
- socketpair

- mprotect check simplified

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Merge branch 'PHP-7.4'

* PHP-7.4:
Clean headers checks

Clean headers checks

Some headers were checked multiple times in the main configure.ac file
and in the bundled extensions or SAPIs themselves. Also many of these
checks are then used

Clean headers checks

Some headers were checked multiple times in the main configure.ac file
and in the bundled extensions or SAPIs themselves. Also many of these
checks are then used accross other extensions or SAPIs so a central
configure.ac makes most sense for these checks.

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Attempt to fix JIT on Mac OSX ZTS build

Merge branch 'PHP-7.4'

* PHP-7.4:
Normalize comments in *nix build system m4 files

Normalize comments in *nix build system m4 files

Normalization include:
- Use dnl for everything that can be ommitted when configure is built in
favor of the shell comment characte

Normalize comments in *nix build system m4 files

Normalization include:
- Use dnl for everything that can be ommitted when configure is built in
favor of the shell comment character # which is visible in the output.
- Line length normalized to 80 columns
- Dots for most of the one line sentences
- Macro definitions include similar pattern header comments now

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Merge branch 'PHP-7.4'

* PHP-7.4:
Little detection change proposal.

Little detection change proposal.

As pointed out, the further path is called by open rather than shm_open.

Don't build JIT if the host architecture doesn't support it

Also display in phpinfo() whether JIT is unavailable/disabled/enabled.

Add AS_HELP_STRING to Opcache JIT option