Remove outdated Libtool hack for macs

This was once relevant for older versions of macs and autoconf 2.13.

Closes GH-4435

Remove duplicate socklen_t check

- Use Autoconf's default AC_CHECK_TYPES

Closes GH-4418

Remove unused build checks

- yp_get_default_domain was part of ext/yp
- functions checks produce HAVE_function_name symbols. These checks are
currently not used in php-src neither

Remove unused build checks

- yp_get_default_domain was part of ext/yp
- functions checks produce HAVE_function_name symbols. These checks are
currently not used in php-src neither in the extensions out there.
- Removed symbols because they are not used in the code:
- HAVE_GCVT
- HAVE_PUTENV
- HAVE_PUTENV
- HAVE_SETVBUF
- HAVE_TEMPNAM
- HAVE_SIN (sin is also defined in C89 standard)
- HAVE_SETSOCKOPT
- HAVE_LOCKF
- HAVE_ISASCII
- HAVE_YP_GET_DEFAULT_DOMAIN (and other yp extension related unused checks)
- HAVE_LINK
- HAVE_USLEEP is already defined in Windows configuration header
- HAVE_LIBBIND has not been used in php-src for a while anymore
- HAVE_GETHOSTNAME is duplicated in Windows configuration header

Closes GH-4417

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next is 7.2.22

Remove usage of PHP_AIX_LDFLAGS

These are currently not defined since their usage has been removed via
51ca2dba530883a8e07d6869e66ee6c5b3c978a6
and
53349d69ddf7a2ba128f0928fb3b37

Remove usage of PHP_AIX_LDFLAGS

These are currently not defined since their usage has been removed via
51ca2dba530883a8e07d6869e66ee6c5b3c978a6
and
53349d69ddf7a2ba128f0928fb3b376422611a3b

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Remove duplicate PTHREADS template define

The undef PTHREADS converts to define if thread safety is configured.
This step is already done by pthreads m4 macros from TSRM so this now

Remove duplicate PTHREADS template define

The undef PTHREADS converts to define if thread safety is configured.
This step is already done by pthreads m4 macros from TSRM so this now
removes duplicated PTHREADS defines from php_config.h.

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Remove PHP_MYSQL variable

PHP_MYSQL variable was once defined by the ext/mysql (--with-mysql).

Closes GH-4399

Remove php_multiple_shlib_versions_ok

Variable usage was removed via
913cec65517f11ebd972f920d1d320b853a175dd

Remove WARNING_LEVEL fix for QNX

Fix is no longer relevant since the environment variable WARNING_LEVEL
is no longer used to define the value of the -w option for cc.

Closes GH-

Remove WARNING_LEVEL fix for QNX

Fix is no longer relevant since the environment variable WARNING_LEVEL
is no longer used to define the value of the -w option for cc.

Closes GH-4398

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Remove unused tsrm_strtok_r() function

There is also a php_strtok_r() function, which is actually used,
but nothing uses the tsrm_strtok_r() variant...

Refactor undefining PACKAGE_* symbols

Instead of patching configuration headers template generated by
the given tools - autoheader, this moves patching these symbols to
the configure

Refactor undefining PACKAGE_* symbols

Instead of patching configuration headers template generated by
the given tools - autoheader, this moves patching these symbols to
the configure step before creating and invoking the config.status
and before the configuration header file is generated from the
patched template.

Closes GH-4374

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Align segments on huge page boundary only for x86

Closes GH-4387.

Remove APACHE symbol

The APACHE symbol was used in very early PHP versions to indicate the
Apache module usage. Since PHP 4 this is no longer used in the code.

Refactor genif.sh

Changes:
- Coding style fixes
- ${1+"$@"} replaced with "$@" [1]
- EXTRA_MODULE_PTRS variable is not used anymore
- awk tool defined via environment variabl

Refactor genif.sh

Changes:
- Coding style fixes
- ${1+"$@"} replaced with "$@" [1]
- EXTRA_MODULE_PTRS variable is not used anymore
- awk tool defined via environment variable
- srcdir determined automatically from the genif.sh location

[1] https://www.in-ulm.de/~mascheck/various/bourne_args/

Closes GH-4372

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Remove C89 checks for signal.h and strerror

These are part of the C89 and on today's systems not needed to be
checked anymore. This removes symbols HAVE_SIGNAL and HAVE_STRERROR.

Remove C89 checks for signal.h and strerror

These are part of the C89 and on today's systems not needed to be
checked anymore. This removes symbols HAVE_SIGNAL and HAVE_STRERROR.

- http://port70.net/~nsz/c/c89/c89-draft.html
- locale.h is also part of C89 but will be removed per request in PHP 8

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Remove some unused variables

- Variables php_abs_top_srcdir php_abs_top_builddir are no longer used.
- ZEND_EXT_TYPE is always zend_extension and variable is no longer used.

Clo

Remove some unused variables

- Variables php_abs_top_srcdir php_abs_top_builddir are no longer used.
- ZEND_EXT_TYPE is always zend_extension and variable is no longer used.

Closes GH-4378

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Remove PHP_DEBUG_MACRO

The macro is no longer used. The warning at the end of the configure
script therefore is also no longer used.

Remove some more Apache 1 left overs

- warning in configure.ac is relevant for the sapi/apache
- errors output redirected to /dev/null when checking Apache version

Move footer to the end of configure output

Remove PTHREADS_ASSIGN_VARS

This simplifies TSRM build steps a bit and avoids doing unnecessary
steps:
- The `PTHREADS_CHECK_COMPILE` can called inside the for loops only
since

Remove PTHREADS_ASSIGN_VARS

This simplifies TSRM build steps a bit and avoids doing unnecessary
steps:
- The `PTHREADS_CHECK_COMPILE` can called inside the for loops only
since this is only where the `$pthreads_checked` variable is used.
- Assigning variables can be then done only in the configure.ac
once.
- use `m4_include()` instead of the `sinclude()` in the middle of
the build steps.
- The `$threads_result` variable is not used in the code or in
extensions.

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Remove PHP_CHECK_CONFIGURE_OPTIONS

Instead of building a custom macro for checking configure options,
Autoconf 2.62+ already outputs a warning at the beginning and the end
of the out

Remove PHP_CHECK_CONFIGURE_OPTIONS

Instead of building a custom macro for checking configure options,
Autoconf 2.62+ already outputs a warning at the beginning and the end
of the output of configure script. It automatically detects correct
and wrong options better.

This is related also to bug #55634.

So now instead a better way is the default Autoconf approach:

This outputs a warning at the beginning and end of the configure output:

./configure --with-non-existing

This results in fatal error:

./configure --non-existing

configure: error: unrecognized option: `--non-existing'
Try `./configure --help' for more information

The `--enable-option-checking=fatal` results in fatal error for all non
existing options:

./configure --with-non-existing --enable-option-checking=fatal

configure: error: unrecognized options: --with-non-existing

Closes GH-4348

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Remove some old BeOS artefacts

- checking for beos systems is no longer relevant in configure.ac
- usage of undefined constant BETHREADS removed.

Closes GH-4346

Remove check for ApplicationServices/ApplicationServices.h

The symbol HAVE_APPLICATIONSERVICES_APPLICATIONSERVICES_H is not used
and check not needed.

Closes GH-4336

Remove TSRM_BASIC_CHECKS

This macro is not needed anymore. The AC_PROG_CC is done in the main
configure.ac file and the ranlib check is done by the bundled libtool
macros.

C

Remove TSRM_BASIC_CHECKS

This macro is not needed anymore. The AC_PROG_CC is done in the main
configure.ac file and the ranlib check is done by the bundled libtool
macros.

Closes GH-4339

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Remove not needed checks for functions

The following functions don't need to be checked anymore since the
they are not used across the code or the symbols aren't used anymore:
- cuse

Remove not needed checks for functions

The following functions don't need to be checked anymore since the
they are not used across the code or the symbols aren't used anymore:
- cuserid (not used)
- lrand48 (not used and removed via
6d6ef7aacc7f9b17709d2f93b70b359c75011f89)
- random (check is not used)
- srand48 (not used)
- srandom (not used)
- strdup (check is not used)

and the unused check symbols:
- HAVE_CUSERID
- HAVE_LRAND48
- HAVE_RANDOM
- HAVE_SRAND48
- HAVE_SRANDOM
- HAVE_STRDUP

Closes GH-4338

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