# nproc.m4 serial 4 dnl Copyright (C) 2009-2015 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 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 requires on OpenBSD 4.0. AC_CHECK_HEADERS([sys/sysctl.h],,, [AC_INCLUDES_DEFAULT #if HAVE_SYS_PARAM_H # include #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 ]], [[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 ])