random extension macOs handling update.

Not such as fix but taking more precautions.
Indeed, the arc4random has two little flaws in this platform,
one already caught upfront by the e

random extension macOs handling update.

Not such as fix but taking more precautions.
Indeed, the arc4random has two little flaws in this platform,
one already caught upfront by the extension (ie size 0), also
internal use of ccrng_generate which can silently fail in few rare
cases.

Closes #7824.

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Fixed build in separate directory

Implement php_handle_avif() using libavifinfo

See #80828 and the internals@ mailing list discussion at
https://externals.io/message/116543

Use libavifinfo's AvifInfoGetFeaturesS

Implement php_handle_avif() using libavifinfo

See #80828 and the internals@ mailing list discussion at
https://externals.io/message/116543

Use libavifinfo's AvifInfoGetFeaturesStream() in php_handle_avif() to
get the width, height, bit depth and channel count from an AVIF
payload. Implement stream reading/skipping functions and data struct.
Use libavifinfo's AvifInfoIdentifyStream() in php_is_image_avif().

Update the expected features read from "test1pix.avif" in
getimagesize.phpt.

Closes GH-7711.

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only check crypt algo if we use external libcrypt

Add --with-external-libcrypt build option
display an error message if some algo not available in external libcrypt

add note in UPGRADING

Add --with-external-libcrypt build option
display an error message if some algo not available in external libcrypt

Fix bug #81491: Ensure HAVE_ARGON2LIB is set when compiling using libargon2

Closes GH-7538.

Better support for cross-compilation

Use pkg-config for libargon2

We already tried this in PHP 7.4, but ran into issues, because
alpine did not support pkg-config for libargon2 (or had a broken
pc file, not sure). The A

Use pkg-config for libargon2

We already tried this in PHP 7.4, but ran into issues, because
alpine did not support pkg-config for libargon2 (or had a broken
pc file, not sure). The Alpine issue has been resolved in the
meantime, so let's give this another try.

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Fix -Wimplicit-function-declaration in configure

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

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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Move __alignof__ support check into main configure.ac.

Fix crypt_r detection

And force use of our own php_crypt_r implementation to keep
previous behavior despite that.

Simplify `_crypt_extended_init_r`, and fix redundant initialization on Win32/Solaris

Looking at the history of this function, the original implementation had a bug where
it would return

Simplify `_crypt_extended_init_r`, and fix redundant initialization on Win32/Solaris

Looking at the history of this function, the original implementation had a bug where
it would return from the middle of the function without unlocking the mutex first.
The author attempted to fix this by incrementing the `initialized` flag atomically,
which is not necessary, since the section which modifies the flag is protected by a
mutex.

Coincidentally, at the same time that all this unnecessary 'atomic' machinery was
introduced, the code was also changed so that it didn't return without unlocking the
mutex. So it looks like the bug was fixed by accident.

It's not necessary to declare the flag as `volatile` either, since it is protected
by a mutex.

Further, the 'fixed' implementation was also wrong in another respect: on Windows
and Solaris, the `initialized` flag was not even declared as `static`!! So the
initialization of the static tables for S-boxes, P-boxes, etc. was repeated on
each call to `php_crypt`, completely defeating the purpose of this function.

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Drop wchar header check as always defined since C95

Remove convert_cyr_string() function

Remove configure checks for asinh, acosh, atanh, log1p, hypot

Port various autoconf bits to C99 compilers

C99 no longer has implicit function declarations and implicit ints.
Current GCC versions enable them as an extension, but this will
change

Port various autoconf bits to C99 compilers

C99 no longer has implicit function declarations and implicit ints.
Current GCC versions enable them as an extension, but this will
change in a future GCC version.

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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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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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Revert "ext/standard: Use PKG_CHECK_MODULES to detect the Argon2 library"

This reverts commit bdcef51bcb367323f2eea4808f34a1b3e58bd3d8.

It seems that pkg-config support for libargon

Revert "ext/standard: Use PKG_CHECK_MODULES to detect the Argon2 library"

This reverts commit bdcef51bcb367323f2eea4808f34a1b3e58bd3d8.

It seems that pkg-config support for libargon2 is still flaky:
* No pc file on Alpine.
* Custom builds of released libargon2 versions create a broken
pc file. This is fixed in master, but not released.

Go back to the old detection code for now.

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Revert option rename

Let's keep this at --with-password-argon2 to avoid churn, I don't
think we have a strong motivation to rename this one.

ext/standard: Use PKG_CHECK_MODULES to detect the Argon2 library

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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