#!/usr/bin/perl -I%PREFIX%/share/bsdbuild
#
# Copyright (c) 2001-2007 Hypertriton, Inc. <http://hypertriton.com/>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistribution of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Neither the name of CubeSoft Communications, nor the names of its
#    contributors may be used to endorse or promote products derived from
#    this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
use BSDBuild::Core;
use Getopt::Long;

our $EmulOS = undef;
our $EmulOSRel = undef;
our $EmulArch = undef;

sub mdefine
{
	my ($def, $val) = @_;
	
	if ($val =~ /^"(.+)"$/) { $val = $1; }
	MkDefine($def, $val);
	MkSaveMK($def);
}

sub hdefine
{
	my ($def, $val) = @_;

	if ($val =~ /^"(.+)"$/) { $val = $1; }
	MkDefine($def, $val);
	MkSaveDefine($def);
}

sub hundef
{
	my $def = shift;
	MkSaveUndef($def);
}

sub c_define
{
	my $def = shift;

	MkDefine('CFLAGS', '$CFLAGS -D'.$def);
	MkDefine('CXXFLAGS', '$CXXFLAGS -D'.$def);
	MkSaveMK('CFLAGS');
	MkSaveMK('CXXFLAGS');
	PmDefineBool($def);
}

sub c_incdir
{
	my $dir = shift;
	
	MkDefine('CFLAGS', '$CFLAGS -I'.$dir);
	MkDefine('CXXFLAGS', '$CXXFLAGS -I'.$dir);
	MkSaveMK('CFLAGS');
	MkSaveMK('CXXFLAGS');

	$dir =~ s/\$SRC/\./g;
	PmIncludePath($dir);
}

sub c_libdir
{
	my $def = shift;

	MkDefine('LIBS', '$LIBS -L'.$def);
	MkSaveMK('LIBS');

	$dir =~ s/\$SRC/\./g;
	PmLibPath($dir);
}

sub c_extra_warnings
{
	PmBuildFlag('extra-warnings');
}

sub c_fatal_warnings
{
	PmBuildFlag('extra-warnings');
}

sub c_no_secure_warnings
{
	PmDefineBool('_CRT_SECURE_NO_WARNINGS');
	PmDefineBool('_CRT_SECURE_NO_DEPRECATE');
}

sub c_option
{
	my $opt = shift;

	MkDefine('CFLAGS', '$CFLAGS '.$opt);
	MkDefine('CXXFLAGS', '$CXXFLAGS '.$opt);
	MkSaveMK('CFLAGS');
	MkSaveMK('CXXFLAGS');
}

sub Register
{
	my ($arg, $descr) = @_;
	$arg =~ /\"(.*)\"/;
	$arg = $1;
	$descr =~ /\"(.*)\"/;
	$descr = $1;

	my $darg = pack('A' x 25, split('', $arg));
	push @HELP, "echo \"    $darg $descr\"";
}

sub Help
{
    my $prefix_opt = pack('A' x 25, split('', '--prefix'));
    my $sysconfdir_opt = pack('A' x 25, split('', '--sysconfdir'));
    my $bindir_opt = pack('A' x 25, split('', '--bindir'));
    my $libdir_opt = pack('A' x 25, split('', '--libdir'));
    my $sharedir_opt = pack('A' x 25, split('', '--sharedir'));
    my $localedir_opt = pack('A' x 25, split('', '--localedir'));
    my $mandir_opt = pack('A' x 25, split('', '--mandir'));
    my $infodir_opt = pack('A' x 25, split('', '--infodir'));
    my $srcdir_opt = pack('A' x 25, split('', '--srcdir'));
    my $testdir_opt = pack('A' x 25, split('', '--testdir'));
    my $help_opt = pack('A' x 25, split('', '--help'));
    my $nls_opt = pack('A' x 25, split('', '--enable-nls'));
    my $gettext_opt = pack('A' x 25, split('', '--with-gettext'));
    my $libtool_opt = pack('A' x 25, split('', '--with-libtool'));
    my $cygwin_opt = pack('A' x 25, split('', '--with-cygwin'));
    my $manpages_opt = pack('A' x 25, split('', '--with-manpages'));
    my $manlinks_opt = pack('A' x 25, split('', '--with-manlinks'));
    my $docs_opt = pack('A' x 25, split('', '--with-docs'));
    my $debug_opt = pack('A' x 25, split('', '--enable-debug'));

    my $regs = join("\n",
        "echo \"    $prefix_opt Installation prefix [/usr/local]\"",
        "echo \"    $sysconfdir_opt System-wide configuration prefix [/etc]\"",
        "echo \"    $bindir_opt Executable directory [\$PREFIX/bin]\"",
        "echo \"    $libdir_opt Library directory [\$PREFIX/lib]\"",
        "echo \"    $sharedir_opt Share directory [\$PREFIX/share]\"",
        "echo \"    $localedir_opt Locale directory [\$PREFIX/share/locale]\"",
        "echo \"    $mandir_opt Manpage directory [\$PREFIX/share/man]\"",
        "echo \"    $infodir_opt Info directory [\$PREFIX/share/info]\"",
        "echo \"    $srcdir_opt Source tree for concurrent build [.]\"",
        "echo \"    $testdir_opt Directory in which to execute tests [.]\"",
        "echo \"    $help_opt Display this message\"",
        "echo \"    $nls_opt Native Language Support [no]\"",
        "echo \"    $gettext_opt Use gettext tools (msgmerge, ...) [check]\"",
        "echo \"    $libtool_opt Specify path to libtool [bundled]\"",
        "echo \"    $cygwin_opt Add cygwin dependencies under cygwin [no]\"",
        "echo \"    $manpages_opt Manual pages (-mdoc) [yes]\"",
        "echo \"    $manlinks_opt Manual pages links for functions [no]\"",
        "echo \"    $docs_opt Printable docs (-me/tbl/eqn/pic/refer) [no]\"",
        "echo \"    $debug_opt Include debugging code [no]\"",
	@HELP);

    print << "EOF";
echo "Usage: ./configure [args]"
$regs
exit 1
EOF
}

sub Version
{
    print << "EOF";
echo "BSDbuild %VERSION%"
exit 1
EOF
}

BEGIN
{
	$INSTALLDIR = '%PREFIX%/share/bsdbuild';

	print << 'EOF';
#!/bin/sh
#
# Do not edit!
# This file was generated from configure.in by BSDbuild %VERSION%.
#
# To regenerate this file, get the latest BSDbuild release from
# http://hypertriton.com/bsdbuild/, and use the command:
#
#     $ cat configure.in | mkconfigure > configure
#
EOF

	open($LUA, '>configure.lua');
	print { $LUA } << 'EOF';
-- Public domain
--
-- Do not edit!
-- This file was generated from configure.in by BSDbuild %VERSION%.
--
-- To regenerate this file, get the latest BSDbuild release from
-- http://hypertriton.com/bsdbuild/, and use the command:
--
--    $ cat configure.in | mkconfigure > configure
--
hdefs = {}
mdefs = {}
EOF

	print << 'EOF';
# Copyright (c) 2001-2007 Hypertriton, Inc. <http://hypertriton.com/>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

optarg=
for arg
do
	case "$arg" in
	-*=*)
	    optarg=`echo "$arg" | sed 's/[-_a-zA-Z0-9]*=//'`
	    ;;
	*)
	    optarg=
	    ;;
	esac

	case "$arg" in
	--prefix=*)
	    prefix=$optarg
	    ;;
	--sysconfdir=*)
	    sysconfdir=$optarg
	    ;;
	--bindir=*)
	    bindir=$optarg
	    ;;
	--libdir=*)
	    libdir=$optarg
	    ;;
	--sharedir=*)
	    sharedir=$optarg
	    ;;
	--localedir=*)
	    localedir=$optarg
	    ;;
	--mandir=*)
	    mandir=$optarg
	    ;;
	--infodir=*)
	    infodir=$optarg
	    ;;
	--enable-*)
	    option=`echo $arg | sed -e 's/--enable-//' -e 's/=.*//'`
	    option=`echo $option | sed 's/-/_/g'`
	    case "$arg" in
	        *=*)
	            eval "enable_${option}='$optarg'"
		    ;;
		*)
	            eval "enable_${option}=yes"
		    ;;
	    esac
	    ;;
	--disable-*)
	    option=`echo $arg | sed -e 's/--disable-//'`;
	    option=`echo $option | sed 's/-/_/g'`
	    eval "enable_${option}=no"
	    ;;
	--with-*)
	    option=`echo $arg | sed -e 's/--with-//' -e 's/=.*//'`
	    option=`echo $option | sed 's/-/_/g'`
	    case "$arg" in
	        *=*)
	            eval "with_${option}='$optarg'"
		    ;;
		*)
	            eval "with_${option}=yes"
		    ;;
	    esac
	    ;;
	--without-*)
	    option=`echo $arg | sed -e 's/--without-//'`;
	    option=`echo $option | sed 's/-/_/g'`
	    eval "with_${option}=no"
	    ;;
	--help)
	    help=yes
	    ;;
	--srcdir=*)
	    srcdir=$optarg
	    ;;
	--testdir=*)
	    testdir=$optarg
	    ;;
	*)
	    echo "invalid argument: $arg"
	    echo "try ./configure --help"
	    exit 1
	    ;;
	esac
done

if [ -e "/bin/echo" ]; then
    /bin/echo -n ""
    if [ $? = 0 ]; then
    	ECHO_N="/bin/echo -n"
    else
    	ECHO_N="echo -n"
    fi
else
    ECHO_N="echo -n"
fi

if [ "${prefix}" != "" ]; then
    PREFIX="$prefix"
else
    PREFIX="/usr/local"
fi

if [ "${srcdir}" != "" ]; then
	echo "concurrent build (source in ${srcdir})"
	SRC=${srcdir}
	perl ${SRC}/mk/mkconcurrent.pl ${SRC}
	if [ $? != 0 ]; then
		exit 1;
	fi
else
	SRC=`pwd`
fi

if [ "${testdir}" != "" ]; then
	echo "Configure tests will be executed in ${testdir}"
	if [ ! -e "${testdir}" ]; then
		echo "Creating ${testdir}"
		mkdir ${testdir}
	fi
else
	testdir="."
fi
EOF
	
	GetOptions("emul-os=s" =>	\$EmulOS,
	           "emul-osrel=s" =>	\$EmulOSRel,
	           "emul-arch=s" =>	\$EmulArch);

	if ($EmulOS) {
		print STDERR "Emulating: $EmulOS $EmulOSRel $EmulArch\n";
	}

	my %done = ();
	my $registers = 1;
	while (<STDIN>) {
		chop;
		if (/^\s*#/) {
		    next;
		}
		DIRECTIVE: foreach my $s (split(';')) {
			if ($s =~ /([A-Z_]+)\((.*)\)/) {
				my $cmd = lc($1);
				my $argspec = $2;
				my @args = ();

				foreach my $arg (split(',', $argspec)) {
					$arg =~ s/^\s+//;
					$arg =~ s/\s+$//;
					push @args, $arg;
				}

				if ($cmd eq 'register') {
					Register(@args);
				} else {
					if ($registers) {
						print << 'EOF';
if [ "${help}" = "yes" ]; then
EOF
						Help();
						print << 'EOF';
fi

MACHINE=`uname -m 2>/dev/null` || MACHINE=unknown
OSRELEASE=`uname -r 2>/dev/null` || OSRELEASE=unknown
SYSTEM=`uname -s 2>/dev/null` || SYSTEM=unknown
HOST="$SYSTEM-$OSRELEASE-$MACHINE"
echo "Host: $HOST"

echo "# File generated by configure script (BSDbuild %VERSION%)." > Makefile.config
echo "Machine: $MACHINE" > config.log
echo "Release: $OSRELEASE" >> config.log
echo "System: $SYSTEM" >> config.log
for arg
do
	echo "Argument: $arg" >> config.log
done
mkdir config 1>/dev/null 2>&1

HAVE_MANDOC="no"
NROFF=""
for path in `echo $PATH | sed 's/:/ /g'`; do
	if [ -x "${path}/nroff" ]; then
		NROFF="${path}/nroff"
	fi
done
if [ "${NROFF}" != "" ]; then
	echo | ${NROFF} -Tmandoc >/dev/null
	if [ "$?" = "0" ]; then
		HAVE_MANDOC="yes"
	fi
fi
if [ "${HAVE_MANDOC}" = "no" ]; then
	if [ "${with_manpages}" = "yes" ]; then
		echo "*"
		echo "* --with-manpages was requested, but either the nroff(1)"
		echo "* utility or the mdoc(7) macro package was not found."
		echo "*"
		exit 1
	fi
	echo "HAVE_MANDOC=no" >> Makefile.config
	echo "NOMAN=yes" >> Makefile.config
	echo "NOMANLINKS=yes" >> Makefile.config
else
	echo "HAVE_MANDOC=yes" >> Makefile.config
	if [ "${with_manpages}" = "no" ]; then
		echo "NOMAN=yes" >> Makefile.config
		echo "NOMANLINKS=yes" >> Makefile.config
	else
		if [ "${with_manlinks}" != "yes" ]; then
			echo "NOMANLINKS=yes" >> Makefile.config
		fi
	fi
fi

if [ "${with_docs}" = "no" ]; then
	echo "NODOC=yes" >> Makefile.config
fi
if [ "${enable_debug}" = "yes" ]; then
	echo "LDFLAGS+=-g" >> Makefile.config
	echo "#ifndef DEBUG" > config/debug.h
	echo "#define DEBUG 1" >> config/debug.h
	echo "#endif /* DEBUG */" >> config/debug.h
else
	echo "#undef DEBUG" > config/debug.h
fi

if [ "${enable_nls}" = "yes" ]; then
	ENABLE_NLS="yes"
	echo "#ifndef ENABLE_NLS" > config/enable_nls.h
	echo "#define ENABLE_NLS 1" >> config/enable_nls.h
	echo "#endif /* ENABLE_NLS */" >> config/enable_nls.h
	msgfmt=""
	for path in `echo $PATH | sed 's/:/ /g'`; do
		if [ -x "${path}/msgfmt" ]; then
			msgfmt=${path}/msgfmt
		fi
	done
	if [ "${msgfmt}" != "" ]; then
		HAVE_GETTEXT="yes"
	else
		HAVE_GETTEXT="no"
	fi
else
	ENABLE_NLS="no"
	HAVE_GETTEXT="no"
	echo "#undef ENABLE_NLS" > config/enable_nls.h
fi
echo "ENABLE_NLS=${ENABLE_NLS}" >> Makefile.config
echo "HAVE_GETTEXT=${HAVE_GETTEXT}" >> Makefile.config

LIBTOOL_BUNDLED="yes"
LIBTOOL=\${TOP}/mk/libtool/libtool
echo "LIBTOOL=${LIBTOOL}" >> Makefile.config

echo "PREFIX?=${PREFIX}" >> Makefile.config
echo "#ifndef PREFIX" > config/prefix.h
echo "#define PREFIX \"${PREFIX}\"" >> config/prefix.h
echo "#endif /* PREFIX */" >> config/prefix.h

if [ "${bindir}" != "" ]; then
	BINDIR="${bindir}"
else
	BINDIR="${PREFIX}/bin"
fi
echo "BINDIR=${BINDIR}" >> Makefile.config
echo "#ifndef BINDIR" > config/bindir.h
echo "#define BINDIR \"${BINDIR}\"" >> config/bindir.h
echo "#endif /* BINDIR */" >> config/bindir.h

if [ "${libdir}" != "" ]; then
	LIBDIR="${libdir}"
else
	LIBDIR="${PREFIX}/lib"
fi
echo "LIBDIR=${LIBDIR}" >> Makefile.config
echo "#ifndef LIBDIR" > config/libdir.h
echo "#define LIBDIR \"${LIBDIR}\"" >> config/libdir.h
echo "#endif /* LIBDIR */" >> config/libdir.h

if [ "${sharedir}" != "" ]; then
	SHAREDIR="${sharedir}"
else
	SHAREDIR="${PREFIX}/share"
fi
echo "SHAREDIR=${SHAREDIR}" >> Makefile.config
echo "#ifndef SHAREDIR" > config/sharedir.h
echo "#define SHAREDIR \"${SHAREDIR}\"" >> config/sharedir.h
echo "#endif /* SHAREDIR */" >> config/sharedir.h

if [ "${localedir}" != "" ]; then
	LOCALEDIR="${localedir}"
else
	LOCALEDIR="${SHAREDIR}/locale"
fi
echo "LOCALEDIR=${LOCALEDIR}" >> Makefile.config
echo "#ifndef LOCALEDIR" > config/localedir.h
echo "#define LOCALEDIR \"${LOCALEDIR}\"" >> config/localedir.h
echo "#endif /* LOCALEDIR */" >> config/localedir.h

if [ "${mandir}" != "" ]; then
	MANDIR="${mandir}"
else
	MANDIR="${SHAREDIR}/man"
fi
echo "MANDIR=${MANDIR}" >> Makefile.config
echo "#ifndef MANDIR" > config/mandir.h
echo "#define MANDIR \"${MANDIR}\"" >> config/mandir.h
echo "#endif /* MANDIR */" >> config/mandir.h

if [ "${infodir}" != "" ]; then
	INFODIR="${infodir}"
else
	INFODIR="${SHAREDIR}/info"
fi
echo "INFODIR=${INFODIR}" >> Makefile.config
echo "#ifndef INFODIR" > config/infodir.h
echo "#define INFODIR \"${INFODIR}\"" >> config/infodir.h
echo "#endif /* INFODIR */" >> config/infodir.h

if [ "${sysconfdir}" != "" ]; then
	SYSCONFDIR="${sysconfdir}"
else
	SYSCONFDIR="${PREFIX}/etc"
fi
echo "SYSCONFDIR=${SYSCONFDIR}" >> Makefile.config
echo "#ifndef SYSCONFDIR" > config/sysconfdir.h
echo "#define SYSCONFDIR \"${SYSCONFDIR}\"" >> config/sysconfdir.h
echo "#endif /* SYSCONFDIR */" >> config/sysconfdir.h

EOF
						$registers = 0;
					}
				}
				if ($cmd eq 'check' || $cmd eq 'require') {
					my $t = shift(@args);
					my $mod = "$INSTALLDIR/BSDBuild/$t.pm";
					unless (-e $mod) {
						print STDERR "$mod: $!\n";
						exit (1);
					}
					do($mod);
					if ($@) {
						print STDERR $@;
						exit (1);
					}
					if (exists($DEPS{$t})) {
						foreach my $dep (split(',',
						                 $DEPS{$t})) {
							if (!exists(
							    $done{$dep})) {
								print STDERR
								    "$t ".
								    "depends ".
								    "on: ".
								    $dep.
								    "\n";
								exit(1);
							}
						}
					}
		
					my $c;
					if ($EmulOS) {
						unless (exists($EMUL{$t}) &&
						        defined($EMUL{$t})) {
							print STDERR
							    "Ignoring: $t\n";
							next DIRECTIVE;
						}
						$c = $EMUL{$t};
						@args = ($EmulOS, $EmulOSRel,
						         $EmulArch);
					} else {
						$c = $TESTS{$t};
						unless ($c) {
							die "Bad test: $t";
						}
					}
					print STDERR "+ $t: $DESCR{$t}\n";
					MkPrintN("checking for $DESCR{$t}...");
					&$c(@args);
					if ($EmulOS) {
						MkPrintN("ok\n");
					}
					$done{$t} = 1;
				} elsif ($cmd eq 'mdefine') {
					mdefine(@args);
				} elsif ($cmd eq 'hdefine') {
					hdefine(@args);
				} elsif ($cmd eq 'hundef') {
					hundef(@args);
				} elsif ($cmd eq 'c_define') {
					c_define(@args);
				} elsif ($cmd eq 'c_incdir') {
					c_incdir(@args);
				} elsif ($cmd eq 'c_libdir') {
					c_libdir(@args);
				} elsif ($cmd eq 'c_option') {
					c_option(@args);
				} elsif ($cmd eq 'c_extra_warnings') {
					c_extra_warnings(@args);
				} elsif ($cmd eq 'c_fatal_warnings') {
					c_fatal_warnings(@args);
				} elsif ($cmd eq 'c_no_secure_warnings') {
					c_no_secure_warnings(@args);
				} elsif ($cmd eq 'exit') {
					print "exit $args[0]\n";
				}
			} else {
				print $s, "\n";
			}
		}
	}
	MkPrint("Don't forget to run \\\"make depend\\\".");
}