# 
# config-host.in a configure sub script for GNU M2.
# 
# Copyright (C) 2005-2023 Free Software Foundation, Inc.
# Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
# 
# This file is part of GNU Modula-2.
# 
# GNU Modula-2 is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
# 
# GNU Modula-2 is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
# 
# Under Section 7 of GPL version 3, you are granted additional
# permissions described in the GCC Runtime Library Exception, version
# 3.1, as published by the Free Software Foundation.
# 
# You should have received a copy of the GNU General Public License and
# a copy of the GCC Runtime Library Exception along with this program;
# see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
# <http://www.gnu.org/licenses/>.
#
AC_INIT(ASCII.def, 1.9.5, gm2@nongnu.org)
AC_CONFIG_HEADER(gm2-libs-host.h:gm2-libs-host.h.in)

# Checks for programs.

# Checks for libraries.

# Checks for header files.
AC_HEADER_STDC
AC_HEADER_TIME
AC_HEADER_SYS_WAIT
AC_CHECK_HEADER([math.h],
	       [AC_DEFINE([HAVE_MATH_H], [1], [have math.h])])

AC_CHECK_HEADERS([limits.h stddef.h string.h strings.h stdlib.h \
		  time.h \
		  fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
		  sys/resource.h sys/param.h sys/times.h sys/stat.h \
                  sys/wait.h sys/ioctl.h errno.h sys/errno.h \
		  pwd.h direct.h dirent.h signal.h malloc.h langinfo.h \
                  pthread.h stdarg.h stdio.h sys/types.h termios.h \
                  netinet/in.h netdb.h])

# Checks for typedefs, structures, and compiler characteristics.

AC_HEADER_STAT
AC_STRUCT_TM
AC_FUNC_ALLOCA
AC_FUNC_SELECT_ARGTYPES

# Checks for library functions.

AC_CHECK_FUNCS(ctime)
AC_CHECK_FUNCS(rand)
AC_CHECK_FUNCS(fstat)
AC_CHECK_FUNCS(select)
AC_CHECK_FUNCS(strsignal)
AC_CHECK_FUNCS(strtod)
AC_CHECK_FUNCS(strtold)
AC_CHECK_FUNCS(cfmakeraw)

#
# library functions (used by gm2-libs and ulm-lib-gm2)
# the results of this configuration are process by
# tools-src/createUlmSys in order to produce the runtime system
# interface.
#
AC_CHECK_FUNCS(access)
AC_CHECK_FUNCS(brk)
AC_CHECK_FUNCS(close)
AC_CHECK_FUNCS(creat)
AC_CHECK_FUNCS(dup)
AC_CHECK_FUNCS(execve)
AC_CHECK_FUNCS(exit)
AC_CHECK_FUNCS(fcntl)
AC_CHECK_FUNCS(fstat)
AC_CHECK_FUNCS(getdents)
AC_CHECK_FUNCS(getgid)
AC_CHECK_FUNCS(getpid)
AC_CHECK_FUNCS(gettimeofday)
AC_CHECK_FUNCS(getuid)
AC_CHECK_FUNCS(ioctl)
AC_CHECK_FUNCS(kill)
AC_CHECK_FUNCS(link)
AC_CHECK_FUNCS(lseek)
AC_CHECK_FUNCS(open)
AC_CHECK_FUNCS(pause)
AC_CHECK_FUNCS(pipe)
AC_CHECK_FUNCS(read)
AC_CHECK_FUNCS(setitimer)
AC_CHECK_FUNCS(setgid)
AC_CHECK_FUNCS(setuid)
AC_CHECK_FUNCS(stat)
AC_CHECK_FUNCS(times)
AC_CHECK_FUNCS(unlink)
AC_CHECK_FUNCS(wait)
AC_CHECK_FUNCS(write)


dnl
dnl  now check for specific types
dnl

AC_CHECK_SIZEOF([long])

dnl this routine has been adopted from the GNU emacs20 distrubution
AC_MSG_CHECKING(for struct timeval)
AC_TRY_COMPILE([#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif], [static struct timeval x; x.tv_sec = x.tv_usec;],
  [AC_MSG_RESULT(yes)
   HAVE_TIMEVAL=yes
   AC_DEFINE([HAVE_TIMEVAL], [1], [struct timeval exists])],
  [AC_MSG_RESULT(no)
   HAVE_TIMEVAL=no]
   AC_DEFINE([HAVE_TIMEVAL], [1], [struct timeval exists]))


# AC_CHECK_TYPES(time_t)


dnl
dnl  now check for presence of libraries and functions within libraries.
dnl

AC_CHECK_LIB(m, exp10, [AC_DEFINE([HAVE_EXP10],[1],[Define to 1 if your system has 'exp10'.])])
AC_CHECK_LIB(m, exp10f, [AC_DEFINE([HAVE_EXP10F],[1],[Define to 1 if your system has 'exp10f'.])])
AC_CHECK_LIB(m, exp10l, [AC_DEFINE([HAVE_EXP10L],[1],[Define to 1 if your system has 'exp10l'.])])

AC_CHECK_LIB(m, signbit, [AC_DEFINE([HAVE_SIGNBIT],[1],[Define to 1 if your system has 'signbit'.])])
AC_CHECK_LIB(m, signbitf, [AC_DEFINE([HAVE_SIGNBITF],[1],[Define to 1 if your system has 'signbitf'.])])
AC_CHECK_LIB(m, signbitl, [AC_DEFINE([HAVE_SIGNBITL],[1],[Define to 1 if your system has 'signbitl'.])])

AC_OUTPUT