Autotools: Sync CS in extensions (#15343)

- Redundant double quotes removed
- AS_* macros used
- Few nits adjusted here and there

Sync HAVE_<extension> help texts (#15167)

This syncs all help texts of extension preprocessor macros to the same
style "Define to 1 if the PHP extension '<ext>' is available.".
[skip

Sync HAVE_<extension> help texts (#15167)

This syncs all help texts of extension preprocessor macros to the same
style "Define to 1 if the PHP extension '<ext>' is available.".
[skip ci]

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Autotools: Normalize and quote all PHP_NEW_EXTENSION arguments (#15144)

This adds Autoconf quote characters to all PHP_NEW_EXTENSION arguments
and syncs the CS across the php-src Autotoo

Autotools: Normalize and quote all PHP_NEW_EXTENSION arguments (#15144)

This adds Autoconf quote characters to all PHP_NEW_EXTENSION arguments
and syncs the CS across the php-src Autotools build system.

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Use preprocessor to check for AI_V4MAPPED, AI_ALL and AI_IDN (#13513)

The preprocessor macros defined in some header can be checked, using
Autoconf's AC_COMPILE_IFELSE, or with simpler A

Use preprocessor to check for AI_V4MAPPED, AI_ALL and AI_IDN (#13513)

The preprocessor macros defined in some header can be checked, using
Autoconf's AC_COMPILE_IFELSE, or with simpler AC_CHECK_DECL(S), or even
better and simpler directly in the C code.

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Check socket extension functions in a single Autoconf macro

Check for struct ucred with AC_CHECK_TYPES (#13510)

The AC_CHECK_TYPES can be used to check for the struct ucred. By
default it defines the symbol HAVE_STRUCT_UCRED instead of
ANC_CR

Check for struct ucred with AC_CHECK_TYPES (#13510)

The AC_CHECK_TYPES can be used to check for the struct ucred. By
default it defines the symbol HAVE_STRUCT_UCRED instead of
ANC_CREDS_UCRED.

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Check for struct cmsgcred with AC_CHECK_TYPES (#13507)

The AC_CHECK_TYPES can be used to check for the struct cmsgcred. By
default it defines the symbol HAVE_STRUCT_CMSGCRED instead of

Check for struct cmsgcred with AC_CHECK_TYPES (#13507)

The AC_CHECK_TYPES can be used to check for the struct cmsgcred. By
default it defines the symbol HAVE_STRUCT_CMSGCRED instead of
ANC_CREDS_CMSGCRED.

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Check sockaddr_storage.ss_family with AC_CHECK_MEMBERS (#13407)

This simplifies the check. On AIX 6 and newer, the ss_family is
available, if compiled without defining COMPAT_43 (BSD 4.3

Check sockaddr_storage.ss_family with AC_CHECK_MEMBERS (#13407)

This simplifies the check. On AIX 6 and newer, the ss_family is
available, if compiled without defining COMPAT_43 (BSD 4.3
compatibility).

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Sync headers installation

This syncs the installed sapi and extension headers on *nix and Windows
systems by installing only what is intended outside of php-src.

- ext/gd: witho

Sync headers installation

This syncs the installed sapi and extension headers on *nix and Windows
systems by installing only what is intended outside of php-src.

- ext/gd: without gd_arginfo.h and gd_compat.h
- ext/hash: php_hash_joaat.h and php_hash_fnv.h added also on Windows
installation; xxhash/xxhash.h added on both installations as it is
included in php_hash_xxhash.h; Include path for xxhash.h changed to
relative so the php_hash_xxhash.h can be included outside of php-src;
Redundant include flags removed
- ext/iconv: without iconv_arginfo.h
- ext/mysqli: mysqli_mysqlnd.h was missing on Windows
- ext/phar: php_phar.h was missing on Windows
- ext/sodium: php_libsodium.h was missing on *nix
- ext/xml: without xml_arginfo.h
- sapi/cli: cli.h was missing on Windows

Closes GH-13210
Closes GH-13213

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ext/sockets: Clean header checks (#12607)

- Unused header checks removed:
HAVE_NETINET_TCP_H and HAVE_SYS_UN_H are not used in the code.
- Duplicate linux/filter.h check removed:

ext/sockets: Clean header checks (#12607)

- Unused header checks removed:
HAVE_NETINET_TCP_H and HAVE_SYS_UN_H are not used in the code.
- Duplicate linux/filter.h check removed:
HAVE_LINUX_FILTER_H is already defined in ext/sockets.

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socket add socket_atmark support.

checks whether the socket belongs to the out-of-band mark, thus allows to be
processed accordingly (using the MSG_OOB flag on send/recv).

Clos

socket add socket_atmark support.

checks whether the socket belongs to the out-of-band mark, thus allows to be
processed accordingly (using the MSG_OOB flag on send/recv).

Closes #9846.

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socket module add SO_ATTACH_REUSEPORT_CPBF for Linux.

to be used in conjunction with SO_REUSPORT, giving a greater control
over how we bind a socket instead of the round robin workflow,

socket module add SO_ATTACH_REUSEPORT_CPBF for Linux.

to be used in conjunction with SO_REUSPORT, giving a greater control
over how we bind a socket instead of the round robin workflow, we do
instead attach to the processor id as :
- we assign the processor_id to A in the BPF filter.
- then returns A.

in other words, a more modern version of SO_INCOMING_CPU (ie can have a per
worker notion we do not use here).
Closes #8062

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Fix GH-7978: sockets extension compilation errors

We fix the `ucred` detection when custom `CFLAGS` are in use.

Closes GH-7981.

socket: ancillary credentials build fix for non linux systems.

for systems using SO_PASSCRED sockopt flag but not using ucred struct.

Remove unused MISSING_MSGHDR_MSGFLAGS

Closes GH-4426

Remove unused check for struct cmsghdr

The result of this check is to whether to define the HAVE_CMSGHDR symbol
or not. The HAVE_CMSGHDR is never used in the code and it has been
rem

Remove unused check for struct cmsghdr

The result of this check is to whether to define the HAVE_CMSGHDR symbol
or not. The HAVE_CMSGHDR is never used in the code and it has been
removed via 90289924c031c5b0b2aa1f99ecf317640c926a62.

Closes GH-4337

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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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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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Add AS_HELP_STRING to *nix build configure options

The Autoconf's default AS_HELP_STRING macro can properly format help
strings [1] so watching out if columns are aligned manually is not

Add AS_HELP_STRING to *nix build configure options

The Autoconf's default AS_HELP_STRING macro can properly format help
strings [1] so watching out if columns are aligned manually is not
anymore.

[1] https://www.gnu.org/software/autoconf/manual/autoconf.html#Pretty-Help-Strings

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Merge branch 'PHP-7.3'

Merge branch 'PHP-7.2' into PHP-7.3

Define __APPLE_USE_RFC_3542 for new ipv6 constants

Remove not needed checking for <errno.h>

Header `<errno.h>` is part of the standard C89 headers [1] and on
current systems checking is not need anymore since PHP requires at
least C8

Remove not needed checking for <errno.h>

Header `<errno.h>` is part of the standard C89 headers [1] and on
current systems checking is not need anymore since PHP requires at
least C89. This is noted also by Autoconf itself in the docs and
code [2].

The Autoconf check defined the `HAVE_ERRNO_H` symbol when building PHP
with sockets extension or fpm sapi. This symbol is not utilized across
the PHP source code except in the current version of bundled GD library
which has worked ok so far also with sockets extension or fpm sapi
disabled anyway.

Refs:
[1] https://port70.net/~nsz/c/c89/c89-draft.html#4.1.2
[2] https://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/headers.m4

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Replace obsolete AC_TRY_FOO with AC_FOO_IFELSE

Autoconf 2.50 released in 2001 made several macros obsolete including
the AC_TRY_RUN, AC_TRY_COMPILE and AC_TRY_LINK:
http://git.savann

Replace obsolete AC_TRY_FOO with AC_FOO_IFELSE

Autoconf 2.50 released in 2001 made several macros obsolete including
the AC_TRY_RUN, AC_TRY_COMPILE and AC_TRY_LINK:
http://git.savannah.gnu.org/cgit/autoconf.git/tree/ChangeLog.2

These macros should be replaced with the current AC_FOO_IFELSE instead:
- AC_TRY_RUN with AC_RUN_IFELSE and AC_LANG_SOURCE
- AC_TRY_LINK with AC_LINK_IFELSE and AC_LANG_PROGRAM
- AC_TRY_COMPILE with AC_COMPILE_IFELSE and AC_LANG_PROGRAM

PHP 5.4 to 7.1 require Autoconf 2.59+ version, PHP 7.2 and above require
2.64+ version, and the PHP 7.2 phpize script requires 2.59+ version which
are all greater than above mentioned 2.50 version therefore systems
should be well supported by now.

This patch was created with the help of autoupdate script:
autoupdate <file>

Reference docs:
- https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Obsolete-Macros.html
- https://www.gnu.org/software/autoconf/manual/autoconf-2.59/autoconf.pdf

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