dnl configure.in
dnl
dnl Process this file with autoconf to produce a configure script.
dnl
dnl Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton
### 
### This file is part of Octave.
### 
### Octave 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 2, or (at your option) any
### later version.
### 
### Octave 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.
### 
### You should have received a copy of the GNU General Public License
### along with Octave; see the file COPYING.  If not, write to the Free
### Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

AC_REVISION()
AC_PREREQ(2.0)
AC_INIT(info.c)
AC_CONFIG_HEADER(config.h)

AC_CANONICAL_HOST
if test -z "$host"; then
  host=unknown
fi
canonical_host_type=$host
if test "$host" = unknown; then
  AC_MSG_WARN([configuring Info for unknown system type
])
fi

### some defaults

AC_PREFIX_DEFAULT(/usr/local)

### See which C compiler to use (we expect to find gcc).

AC_PROG_CC
AC_PROG_CPP
AC_PROG_GCC_TRADITIONAL

### Special checks for odd OS specific things.

AC_ISC_POSIX
AC_MINIX
AC_AIX
AC_CHECK_LIB(sun, getpwnam)

### Does the C compiler handle alloca() and const correctly?

AC_ALLOCA
AC_C_CONST

### Checks for header files.

AC_HEADER_STDC
AC_CHECK_HEADERS(pwd.h string.h unistd.h sys/time.h sys/fcntl.h)
AC_CHECK_HEADERS(sys/ttold.h sys/ptem.h)
AC_TIME_WITH_SYS_TIME

### Use sgtty on Ultrix so that using DEC Migrate to convert a Mips
### binary to an Alpha binary will work.  Also on Alpha/OSF to avoid
### a readline bug.

case "$canonical_host_type" in
  mips-dec-ultrix* | alpha-dec-osf*)
    AC_CHECK_HEADER(sgtty.h, [AC_DEFINE(HAVE_SGTTY_H, 1)], [])

    if test "$ac_cv_header_sgtty_h" = no; then
      AC_CHECK_HEADERS(termios.h termio.h sgtty.h, [break], [])
    fi
  ;;
  *)
    AC_CHECK_HEADERS(termios.h termio.h sgtty.h, [break], [])
  ;;
esac

if test "$ac_cv_header_termios_h" = yes \
    || test "$ac_cv_header_termio_h" = yes \
    || test "$ac_cv_header_sgtty_h" = yes; then
  true
else
  AC_MSG_ERROR([I couldn't find termios.h, termio.h, or sgtty.h!])
fi

### Checks for functions.

AC_CHECK_FUNCS(setvbuf getcwd bzero bcopy rindex stricmp strnicmp strerror)

### Checks for OS specific cruft.

AC_FUNC_SETVBUF_REVERSED

TERMLIBS=""
for termlib in termcap terminfo curses termlib ; do
  AC_CHECK_LIB(${termlib}, main, [TERMLIBS="${TERMLIBS} -l${termlib}"])
  case "${TERMLIBS}" in
    *-l${termlib}*)
      AC_MSG_RESULT([defining TERMLIBS to be $TERMLIBS])
      break
    ;;
  esac
done
AC_SUBST(TERMLIBS)

### Checks for other programs.

AC_PROG_RANLIB

AC_PROG_INSTALL

### Do the substitutions.

AC_OUTPUT([Makefile])