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# sched_h.m4 serial 11
dnl Copyright (C) 2008-2018 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.
dnl Written by Bruno Haible.
AC_DEFUN([gl_SCHED_H],
[
AC_REQUIRE([AC_CANONICAL_HOST])
AC_CHECK_HEADERS_ONCE([sys/cdefs.h])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[
#include <sched.h>
struct sched_param a;
int b[] = { SCHED_FIFO, SCHED_RR, SCHED_OTHER };
pid_t t1;
]])],
[SCHED_H=''],
[SCHED_H='sched.h'
AC_CHECK_HEADERS([sched.h], [], [],
[[#if HAVE_SYS_CDEFS_H
#include <sys/cdefs.h>
#endif
]])
gl_NEXT_HEADERS([sched.h])
if test "$ac_cv_header_sched_h" = yes; then
HAVE_SCHED_H=1
else
HAVE_SCHED_H=0
fi
AC_SUBST([HAVE_SCHED_H])
if test "$HAVE_SCHED_H" = 1; then
AC_CHECK_TYPE([struct sched_param],
[HAVE_STRUCT_SCHED_PARAM=1], [HAVE_STRUCT_SCHED_PARAM=0],
[[#if HAVE_SYS_CDEFS_H
#include <sys/cdefs.h>
#endif
#include <sched.h>
]])
else
HAVE_STRUCT_SCHED_PARAM=0
case "$host_os" in
os2*)
dnl On OS/2 kLIBC, struct sched_param is in spawn.h.
AC_CHECK_TYPE([struct sched_param],
[HAVE_STRUCT_SCHED_PARAM=1], [],
[#include <spawn.h>])
;;
vms)
dnl On OpenVMS 7.2 or newer, struct sched_param is in pthread.h.
AC_CHECK_TYPE([struct sched_param],
[HAVE_STRUCT_SCHED_PARAM=1], [],
[#include <pthread.h>])
;;
esac
fi
AC_SUBST([HAVE_STRUCT_SCHED_PARAM])
if test "$ac_cv_header_sys_cdefs_h" = yes; then
HAVE_SYS_CDEFS_H=1
else
HAVE_SYS_CDEFS_H=0
fi
AC_SUBST([HAVE_SYS_CDEFS_H])
dnl Ensure the type pid_t gets defined.
AC_REQUIRE([AC_TYPE_PID_T])
])
AC_SUBST([SCHED_H])
AM_CONDITIONAL([GL_GENERATE_SCHED_H], [test -n "$SCHED_H"])
])
|
