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| author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-01-20 10:55:18 +0000 |
|---|---|---|
| committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-01-20 10:55:18 +0000 |
| commit | 70e9163c9c18e995515598085cb824e554eb7ae7 (patch) | |
| tree | a42dc8b2a6c031354bf31472de888bfc8a060132 /m4/nproc.m4 | |
| parent | cbf5993c43f49281173f185863577d86bfac6eae (diff) | |
| download | coreutils-tarball-master.tar.gz | |
coreutils-8.25HEADcoreutils-8.25master
Diffstat (limited to 'm4/nproc.m4')
| -rw-r--r-- | m4/nproc.m4 | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/m4/nproc.m4 b/m4/nproc.m4 new file mode 100644 index 0000000..fead234 --- /dev/null +++ b/m4/nproc.m4 @@ -0,0 +1,53 @@ +# nproc.m4 serial 4 +dnl Copyright (C) 2009-2016 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 <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 +]) |