1 # sched_h.m4 serial 6 2 dnl Copyright (C) 2008-2012 Free Software Foundation, Inc. 3 dnl This file is free software; the Free Software Foundation 4 dnl gives unlimited permission to copy and/or distribute it, 5 dnl with or without modifications, as long as this notice is preserved. 6 7 dnl Written by Bruno Haible. 8 9 AC_DEFUN([gl_SCHED_H], 10 [ 11 AC_COMPILE_IFELSE( 12 [AC_LANG_PROGRAM([[ 13 #include <sched.h> 14 struct sched_param a; 15 int b[] = { SCHED_FIFO, SCHED_RR, SCHED_OTHER }; 16 pid_t t1; 17 ]])], 18 [SCHED_H=''], 19 [SCHED_H='sched.h' 20 21 gl_CHECK_NEXT_HEADERS([sched.h]) 22 23 if test $ac_cv_header_sched_h = yes; then 24 HAVE_SCHED_H=1 25 else 26 HAVE_SCHED_H=0 27 fi 28 AC_SUBST([HAVE_SCHED_H]) 29 30 AC_CHECK_TYPE([struct sched_param], 31 [HAVE_STRUCT_SCHED_PARAM=1], [HAVE_STRUCT_SCHED_PARAM=0], 32 [#include <sched.h>]) 33 AC_SUBST([HAVE_STRUCT_SCHED_PARAM]) 34 35 dnl Ensure the type pid_t gets defined. 36 AC_REQUIRE([AC_TYPE_PID_T]) 37 ]) 38 AC_SUBST([SCHED_H]) 39 AM_CONDITIONAL([GL_GENERATE_SCHED_H], [test -n "$SCHED_H"]) 40 ]) 41
