dnl -*-autoconf-*-
dnl
dnl Configuration script for distorted-utils
dnl
dnl (c) 2008 Mark Wooding
dnl

dnl ----- Licensing notice --------------------------------------------------
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software Foundation,
dnl Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

dnl--------------------------------------------------------------------------
dnl Initialization.

mdw_AUTO_VERSION
AC_INIT([distorted-utils], AUTO_VERSION, [mdw@distorted.org.uk])
AC_CONFIG_SRCDIR([shadowfix.in])
AC_CONFIG_AUX_DIR([config])
AM_INIT_AUTOMAKE([foreign])
mdw_SILENT_RULES

AC_ARG_WITH([logdir],
	AS_HELP_STRING([--with-logdir=DIR],
		       [Write log files here.]),
	[logdir=$withval],
	[logdir=/var/log
	 for i in /var/log /var/adm; do
	   if test -d $i; then logdir=$i; break; fi
	 done])
AC_SUBST(logdir)

AC_CANONICAL_HOST

dnl--------------------------------------------------------------------------
dnl C programming environment.

## Compiler.
AC_PROG_CC
AX_CFLAGS_WARN_ALL
AC_PROG_CXX
AX_CXXFLAGS_WARN_ALL

## Libraries.
OLIBS=$LIBS
AC_SEARCH_LIBS([floor], [m])
AC_SUBST([MATH_LIBS], [$LIBS])
LIBS=$OLIBS

AC_CHECK_LIB([cdb], [cdb_seek], [have_cdb=yes], [have_cdb=no])
AM_CONDITIONAL([HAVE_LIBCDB], [test $have_cdb = yes])

## Packages.
PKG_CHECK_MODULES([mLib], [mLib >= 2.0.4], [have_mLib=yes], [have_mLib=no])
AM_CONDITIONAL([HAVE_MLIB], [test $have_mLib = yes])

PKG_CHECK_MODULES([catacomb], [catacomb >= 2.1.1],
		  [have_catacomb=yes], [have_catacomb=no])
AM_CONDITIONAL([HAVE_CATACOMB], [test $have_catacomb = yes])

## Functions.
AC_CHECK_FUNC([prlimit], [have_prlimit=yes], [have_prlimit=no])
AM_CONDITIONAL([HAVE_PRLIMIT], [test $have_prlimit = yes])

## Processor type.
case "$host_cpu" in i?86 | x86_64) x86=yes;; *) x86=no;; esac
AM_CONDITIONAL([X86], [test $x86 = yes -a $GCC = yes])

dnl--------------------------------------------------------------------------
dnl Python, Perl and other scripting languages.

## Python.
AM_PATH_PYTHON([2.4], [have_python=yes], [have_python=no])
AM_CONDITIONAL([HAVE_PYTHON], [test $have_python = yes])

AC_PYTHON_MODULE([cdb])
AM_CONDITIONAL([HAVE_PYMOD_CDB], [test $HAVE_PYMOD_CDB = yes])

## Perl.
AC_ARG_VAR([PERL], [Path to your favourite Perl binary.])
AC_PATH_PROGS([PERL], [perl perl5], [false])
AX_PROG_PERL_VERSION([5.004], [have_perl=yes], [have_perl=no])
AM_CONDITIONAL([HAVE_PERL], [test $have_perl = yes])

AC_ARG_WITH([perlmoddir],
	AS_HELP_STRING([--with-perlmoddir=DIR],
		       [Install Perl modules here.]),
	[perlmoddir=$withval],
	[perlmoddir='${libdir}/site_perl'])
AC_SUBST([perlmoddir])

## Tcl.
have_tcl=yes
AC_ARG_VAR([TCLSH], [Path to your favourite tclsh binary.])
AC_PATH_PROG([TCLSH], [tclsh], [false])

AC_MSG_CHECKING([Tcl version])
case "$TCLSH" in false) have_tcl=no ;; esac
case "$have_tcl" in
  yes)
    tclver=$(echo "puts \$tcl_version" | tclsh -)
    tclver_hack=$(echo "$tclver" | sed 's/\.//')
    if test "$tclver_hack" -ge 83; then
      AC_MSG_RESULT([$tclver])
    else
      have_tcl=no
      AC_MSG_RESULT([too old ($tclver)])
    fi
esac
AM_CONDITIONAL([HAVE_TCLSH], [test $have_tcl = yes])

## Bash.
case "$BASH" in /bin/sh) unset BASH ;; esac
AC_ARG_VAR([BASH], [Path to the Bourne Again Shell.])
AC_PATH_PROG([BASH], [bash], [false])
AC_MSG_CHECKING([bash version])
bashver=$("$BASH" -c 'echo $BASH_VERSION')
if "$BASH" 2>/dev/null -c '[[[ ${BASH_VERSINFO[0]} -ge 3 ]]]'; then
  have_bash=yes
  AC_MSG_RESULT([$bashver])
else
  have_bash=no
  AC_MSG_RESULT([too old ($bashver)])
fi
AM_CONDITIONAL([HAVE_BASH], [test $have_bash = yes])

dnl--------------------------------------------------------------------------
dnl Output.

AC_CONFIG_FILES([Makefile])
AC_OUTPUT

dnl ----- That's all, folks -------------------------------------------------