PHP_ARG_ENABLE([pcntl],
  [whether to enable pcntl support],
  [AS_HELP_STRING([--enable-pcntl],
    [Enable pcntl support (CLI/CGI only)])])

if test "$PHP_PCNTL" != "no"; then
  for function in fork sigaction waitpid; do
    AC_CHECK_FUNC([$function],,
      [AC_MSG_FAILURE([ext/pcntl: required function $function() not found.])])
  done

  AC_CHECK_FUNCS(m4_normalize([
    forkx
    getcpuid
    getpriority
    pidfd_open
    pset_bind
    pthread_set_qos_class_self_np
    rfork
    sched_setaffinity
    setpriority
    sigwaitinfo
    sigtimedwait
    unshare
    wait3
    wait4
    waitid
  ]))

  AC_CHECK_FUNCS([WIFCONTINUED],,
    [AC_CHECK_DECL([WIFCONTINUED], [AC_DEFINE([HAVE_WIFCONTINUED], [1])],,
      [#include <sys/wait.h>])])

  AC_CHECK_DECLS(m4_normalize([
      WCONTINUED,
      WEXITED,
      WSTOPPED,
      WNOWAIT,
      P_ALL,
      P_PIDFD,
      P_UID,
      P_JAILID
    ]),,,
    [#include <sys/wait.h>])

  dnl if unsupported, -1 means automatically ENOSYS in this context
  AC_CACHE_CHECK([if sched_getcpu is supported], [php_cv_func_sched_getcpu],
  [AC_RUN_IFELSE([AC_LANG_SOURCE([
#include <sched.h>
int main(void) {
  if (sched_getcpu() == -1) {
      return 1;
  }
  return 0;
}
  ])],
  [php_cv_func_sched_getcpu=yes],
  [php_cv_func_sched_getcpu=no],
  [php_cv_func_sched_getcpu=no])])
  AS_VAR_IF([php_cv_func_sched_getcpu], [yes],
    [AC_DEFINE([HAVE_SCHED_GETCPU], [1],
      [Define to 1 if the 'sched_getcpu' function is properly supported.])])

  AC_CHECK_TYPE([siginfo_t], [PCNTL_CFLAGS="-DHAVE_STRUCT_SIGINFO_T"],,
    [#include <signal.h>])

  PHP_NEW_EXTENSION([pcntl],
    [pcntl.c php_signal.c],
    [$ext_shared],
    [cli],
    [$PCNTL_CFLAGS -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1])
fi