Prep for 8.0.4

PHP-7.4 is now 7.4.17-dev

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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Next is 8.0.3

Update NEWS and version

Merge branch 'PHP-8.0'

* PHP-8.0:
Revert fix for bug 76813 and re2c version bump

Revert fix for bug 76813 and re2c version bump

CentOS 7 ships with re2c 0.13.5 by default, so we should not have
bumped the required re2c version to 0.13.7. However, 0.13.5 does not

Revert fix for bug 76813 and re2c version bump

CentOS 7 ships with re2c 0.13.5 by default, so we should not have
bumped the required re2c version to 0.13.7. However, 0.13.5 does not
support default rules, so we cannot use them to fix bug 76813.

This reverts commit 420184ad529443182c9a348a55b1c9216005c613 and
5e15c9c41f8318a8392c2e2c78544f218736549c.

Closes GH-6593.

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rename COMPILER and ARCHITECTURE macro (too generic)

Merge branch 'PHP-8.0'

* PHP-8.0:
Bump minimum re2c version to 0.13.7

Bump minimum re2c version to 0.13.7

Closes GH-6516.

Prepare for PHP 8.0.2

This was missing from f1f78ac875fcfbf1347eb81eac06c11343c4a664.

Remove very old -no-cpp-precomp compatibility flag on Mac

Closes GH-6501.

Merge branch 'PHP-8.0'

* PHP-8.0:
Fixed bug #80377

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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8.0 branch should be prepping for 8.0.1

Update version in 7.4 branch

Prepare for PHP 8.1

Closes GH-6305.

Merge branch 'PHP-7.4'

* PHP-7.4:
Fix -Wimplicit-function-declaration in configure

Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
Fix -Wimplicit-function-declaration in configure

Fix -Wimplicit-function-declaration in configure

As this is an error with xcode 12, see bug #80171.

Add system ID entropy API

The `zend_system_id` is a (true global) system ID that fingerprints a process state. When extensions add engine hooks during MINIT/startup, entropy is added the sys

Add system ID entropy API

The `zend_system_id` is a (true global) system ID that fingerprints a process state. When extensions add engine hooks during MINIT/startup, entropy is added the system ID for each hook. This allows extensions to identify that changes have been made to the engine since the last PHP process restart.

Closes GH-5871

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7.3.24 is next

decbin/decoct/dechex optimization.

X86: Fast CRC32 computation using PCLMULQDQ instruction

Based on:
"Fast CRC Computation for Generic Polynomials Using PCLMULQDQ Instruction"
V. Gopal, E. Ozturk, et al., 2009, http:/

X86: Fast CRC32 computation using PCLMULQDQ instruction

Based on:
"Fast CRC Computation for Generic Polynomials Using PCLMULQDQ Instruction"
V. Gopal, E. Ozturk, et al., 2009, http://intel.ly/2ySEwL0

Signed-off-by: Frank Du <frank.du@intel.com>

Closes GH-6018

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Add zend_observer API

Closes GH-5857.

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>
Co-authored-by: Sammy Powers <sammyk@datadoghq.com>