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dnl 
dnl   Copyright 2006-2012 Adrian Thurston <thurston@complang.org>
dnl

dnl   This file is part of Colm.
dnl  
dnl   Colm 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   Colm 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 Colm; if not, write to the Free Software
dnl   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
  
AC_INIT(colm, 0.6)
PUBDATE="June 2012"

AM_INIT_AUTOMAKE([foreign])

AC_SUBST(PUBDATE)
AC_CONFIG_HEADER([colm/config.h colm/defs.h])

dnl Choose defaults for the build_parsers and build_manual vars. If the dist
dnl file is present in the root then default to no, otherwise go for it.
AC_CHECK_FILES( [$srcdir/DIST], 
	[. $srcdir/DIST;], 
	[build_parsers=yes; build_manual=yes; ] )

dnl Set to true if the build system should generate parsers from ragel and kelbt
dnl sources. Set to false if generated files are included and not to be built
dnl (production).
AM_CONDITIONAL(BUILD_PARSERS, [test "x$build_parsers" = "xyes"])

dnl Set to true if the manual should be built.
AM_CONDITIONAL(BUILD_MANUAL, [test "x$build_manual" = "xyes"])

AC_CHECK_SIZEOF([long])

CFLAGS="$CFLAGS -Wall"
CXXFLAGS="$CFLAGS -Wall"

dnl Set to true if build system should generate parsers from ragel, kelbt, and
dnl gperf sources. Set to false if generated files are included and not to be
dnl built (production).
dnl AC_SUBST(BUILD_PARSERS,true)

dnl Checks for programs.
AC_PROG_CC

dnl Checks for programs.
AC_PROG_CXX

AC_PROG_LIBTOOL

dnl Set test on c++ compiler.
AC_LANG_CPLUSPLUS

dnl Check for definition of MAKE.
AC_PROG_MAKE_SET

AC_ARG_ENABLE(pool-malloc, 
		AC_HELP_STRING([--enable-pool-malloc], [allocate pool objects with malloc]), 
		AC_DEFINE([POOL_MALLOC], [1], [allocate pool objects with malloc]))

AC_ARG_ENABLE(debug,
		AC_HELP_STRING([--enable-debug], [enable debug statements]), 
		AC_DEFINE([DEBUG], [1], [enable debug statements]))

# Logging features
# AC_ARG_ENABLE(log, "turn on logging", AC_DEFINE(COLM_LOG))
# AC_ARG_ENABLE(log-bytecode, "turns on bytecode logging", AC_DEFINE(COLM_LOG_BYTECODE))
# AC_ARG_ENABLE(log-parse, "turns on parse logging", AC_DEFINE(COLM_LOG_PARSE))
# AC_ARG_ENABLE(log-match, "turns on match logging", AC_DEFINE(COLM_LOG_MATCH))
# AC_ARG_ENABLE(log-compile, "turns on compile logging", AC_DEFINE(COLM_LOG_COMPILE))

if test "x$build_parsers" = "xyes"; then

dnl Check for Ragel
AC_ARG_WITH(ragel,
	[AC_HELP_STRING([--with-ragel], [location of ragel install])],
	[
		# with value specified
		RAGEL="$withval/bin/ragel"
		AC_CHECK_FILES(
		    [$RAGEL],
		    [],
		    [AC_ERROR([ragel is required to build this package])]
		)
	],
	[
		AC_CHECK_PROG(RAGEL, ragel, ragel)
		if test -z "$RAGEL"; then
			echo
			echo "error: ragel is required to build the parsers"
			echo
			exit 1
		fi
	]
)

dnl Check for Kelbt
AC_ARG_WITH(kelbt,
	[AC_HELP_STRING([--with-kelbt], [location of kelbt install])],
	[
		# with value specified
		KELBT="$withval/bin/kelbt"
		AC_CHECK_FILES(
		    [$RAGEL],
		    [],
		    [AC_ERROR([kelbt is required to build this package])]
		)
	],
	[
		AC_CHECK_PROG(KELBT, kelbt, kelbt)
		if test -z "$KELBT"; then
			echo
			echo "error: kelbt is required to build the parsers"
			echo
			exit 1
		fi
	]
)

AC_SUBST(RAGEL)
AC_SUBST(KELBT)

fi # build_parsers

dnl write output files
AC_OUTPUT(Makefile colm/Makefile aapl/Makefile test/Makefile)

echo "configuration of colm complete"