mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
55 lines
1.8 KiB
Plaintext
55 lines
1.8 KiB
Plaintext
# nproc.m4 serial 5
|
|
dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
|
|
dnl This file is free software; the Free Software Foundation
|
|
dnl gives unlimited permission to copy and/or distribute it,
|
|
dnl with or without modifications, as long as this notice is preserved.
|
|
|
|
AC_DEFUN([gl_NPROC],
|
|
[
|
|
gl_PREREQ_NPROC
|
|
])
|
|
|
|
# Prerequisites of lib/nproc.c.
|
|
AC_DEFUN([gl_PREREQ_NPROC],
|
|
[
|
|
dnl Persuade glibc <sched.h> to declare CPU_SETSIZE, CPU_ISSET etc.
|
|
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
|
|
|
|
AC_CHECK_HEADERS([sys/pstat.h sys/sysmp.h sys/param.h],,,
|
|
[AC_INCLUDES_DEFAULT])
|
|
dnl <sys/sysctl.h> requires <sys/param.h> on OpenBSD 4.0.
|
|
AC_CHECK_HEADERS([sys/sysctl.h],,,
|
|
[AC_INCLUDES_DEFAULT
|
|
#if HAVE_SYS_PARAM_H
|
|
# include <sys/param.h>
|
|
#endif
|
|
])
|
|
|
|
AC_CHECK_FUNCS([sched_getaffinity sched_getaffinity_np \
|
|
pstat_getdynamic sysmp sysctl])
|
|
|
|
dnl Test whether sched_getaffinity has the expected declaration.
|
|
dnl glibc 2.3.[0-2]:
|
|
dnl int sched_getaffinity (pid_t, unsigned int, unsigned long int *);
|
|
dnl glibc 2.3.3:
|
|
dnl int sched_getaffinity (pid_t, cpu_set_t *);
|
|
dnl glibc >= 2.3.4:
|
|
dnl int sched_getaffinity (pid_t, size_t, cpu_set_t *);
|
|
if test $ac_cv_func_sched_getaffinity = yes; then
|
|
AC_CACHE_CHECK([for glibc compatible sched_getaffinity],
|
|
[gl_cv_func_sched_getaffinity3],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#include <errno.h>
|
|
#include <sched.h>]],
|
|
[[sched_getaffinity (0, 0, (cpu_set_t *) 0);]])],
|
|
[gl_cv_func_sched_getaffinity3=yes],
|
|
[gl_cv_func_sched_getaffinity3=no])
|
|
])
|
|
if test $gl_cv_func_sched_getaffinity3 = yes; then
|
|
AC_DEFINE([HAVE_SCHED_GETAFFINITY_LIKE_GLIBC], [1],
|
|
[Define to 1 if sched_getaffinity has a glibc compatible declaration.])
|
|
fi
|
|
fi
|
|
])
|