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# sys_select_h.m4 serial 2
dnl Copyright (C) 2006-2007 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_HEADER_SYS_SELECT],
[
AC_CACHE_CHECK([whether <sys/select.h> is self-contained],
[gl_cv_header_sys_select_h_selfcontained],
[
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <sys/select.h>], [])],
[gl_cv_header_sys_select_h_selfcontained=yes],
[gl_cv_header_sys_select_h_selfcontained=no])
])
if test $gl_cv_header_sys_select_h_selfcontained = yes; then
SYS_SELECT_H=''
else
SYS_SELECT_H='sys/select.h'
AC_CHECK_HEADERS([sys/select.h])
gl_ABSOLUTE_HEADER([sys/select.h])
ABSOLUTE_SYS_SELECT_H=\"$gl_cv_absolute_sys_select_h\"
AC_SUBST([ABSOLUTE_SYS_SELECT_H])
if test $ac_cv_header_sys_select_h = yes; then
HAVE_SYS_SELECT_H=1
else
HAVE_SYS_SELECT_H=0
fi
AC_SUBST([HAVE_SYS_SELECT_H])
fi
AC_SUBST([SYS_SELECT_H])
])
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