The fix for bug #78241 assumed that `time_t` would always be 64bit, but
actually is 32bit for x86. We therefore enforce 64bit arithmetic to
avoid wrapping.
- Checks and defines are not relevant for files that include it anymore
- Some code is not used anymore
- Defines are a bit duplicated in zend_portability.h and TSRM.h file
- MAXPATHLEN defs moved to zend_virtual_cwd.h
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.
`time_t` defaults to `_time64` (which is 64bit signed) even on x86, but
`Int32x32To64()` truncates it to signed 32bit. We replace the macro
with the "manual" calculation.
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
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
560ed89bfb which uses PHP's own implementation)
- strpncpy check removed, added via a8c9e893b6 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
On Mac thread_local and __thread are not ABI compatible, in addition, thread_local
comes with additional overhead, __thread seems to be the most suitable linkage to use
regardless of c++/c
If TSRM is shut down and started again (something that phpdbg does),
then tsrmls_id needs to be reloaded everywhere. As tsrmls_id
update is a rare operation, doing that shouldn't be a problem.
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
TSRM configuration header file was once created by separate autoconf
build system for TSRM and is with the current code not directly needed
like this anymore.
This was once part of TSRM but then got refactored into the windows
implementation win32/readdir.h directly. Instead of including such files
directly code should use zend_virtual_cwd.h which is already part of the
php.h file.
We're not checking the return value and the NTS version of this
generates warnings. If we want to handle lock failures, we should
do a hard abort inside tsrm_env_lock() itself.
The `<signal.h>` header file is part of the standard C89 headers [1] and
on current systems can be included unconditionally.
Since file requires at least C89 or greater, the `HAVE_SIGNAL_H` symbol
defined by Autoconf in Zend.m4 [2] can be ommitted and simplifed.
The bundled libmagic (file) also ommits the usage of HAVE_SIGNAL_H since
5.35 however current version in PHP is very modified 5.34 version and
will be refactored separately. Check for HAVE_SIGNAL_H is therefore
still done in the configure.ac.
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
The `<limits.h>` header file is part of the standard C89 headers [1]
and on current systems can be included unconditionally.
Since PHP requires at least C89 or greater, the `HAVE_LIMITS_H` symbol
defined by Autoconf in configure.ac [2] can be ommitted and simplifed
however due to bundled file library (libmagic) and timelib still using
it, the removal there was omitted and done only in Zend.m4 file.
Current bundled libraries libtime, oniguruma, and libmagic still include
partial `HAVE_LIMITS_H` usage and will be more refactored when this is
possible.
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
