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.
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
This patch however does not drop support for the BeOS compatible variant, Haiku, see Github PR #2697 which is currently a WiP
I intentionally left out some fragments for BeOS in the build system for that seems to be bundles
Note: AC_TRY_LINK interprets the source as part of a main function, ending up with int main() { /* ... */ int main() { /* ... */ } ; return 0; } here - Using AC_LINK_IFELSE with AC_LANG_SOURCE directly instead.
but allows us to build PHP with threading support and therefore we can
build as an Apache 2 module.
The locking is currently done using benaphores but this may be reviewed.
