#!/bin/sh

##############################
##  Configurer for BitlBee  ##
##                          ##
##  Copyright 2004 Lintux   ##
##  Copyright 2002 Lucumo   ##
##############################

prefix='/usr/local/'
bindir='$prefix/sbin/'
etcdir='$prefix/etc/bitlbee/'
mandir='$prefix/share/man/'
datadir='$prefix/share/bitlbee/'
config='/var/lib/bitlbee/'
plugindir='$prefix/lib/bitlbee/'
includedir='$prefix/include/bitlbee/'
libevent='/usr/'
pidfile='/var/run/bitlbee.pid'
ipcsocket='/var/run/bitlbee.sock'
pcdir='$prefix/lib/pkgconfig'
systemlibdirs="/lib /lib64 /usr/lib /usr/lib64 /usr/local/lib /usr/local/lib64"

msn=1
jabber=1
oscar=1
yahoo=1
twitter=1
twitter=1
purple=0

debug=0
strip=1
gcov=0
plugins=1
otr=0

events=glib
ldap=0
ssl=auto

arch=`uname -s`
cpu=`uname -m`

GLIB_MIN_VERSION=2.4

echo BitlBee configure

while [ -n "$1" ]; do
	e="`expr "X$1" : 'X--\(.*=.*\)'`"
	if [ -z "$e" ]; then
		cat<<EOF

Usage: $0 [OPTIONS]

Option		Description				Default

--prefix=...	Directories to put files in		$prefix
--bindir=...						$bindir
--etcdir=...						$etcdir
--mandir=...						$mandir
--datadir=...						$datadir
--plugindir=...						$plugindir
--pidfile=...						$pidfile
--config=...						$config
--ipcsocket=...						$ipcsocket

--msn=0/1	Disable/enable MSN part			$msn
--jabber=0/1	Disable/enable Jabber part		$jabber
--oscar=0/1	Disable/enable Oscar part (ICQ, AIM)	$oscar
--yahoo=0/1	Disable/enable Yahoo part		$yahoo
--twitter=0/1	Disable/enable Twitter part		$twitter

--purple=0/1	Disable/enable libpurple support	$purple
		(automatically disables other protocol modules)

--debug=0/1	Disable/enable debugging		$debug
--strip=0/1	Disable/enable binary stripping		$strip
--gcov=0/1	Disable/enable test coverage reporting	$gcov
--plugins=0/1	Disable/enable plugins support		$plugins
--otr=0/1/auto/plugin
		Disable/enable OTR encryption support	$otr

--events=...	Event handler (glib, libevent)		$events
--ssl=...	SSL library to use (gnutls, nss, openssl, bogus, auto)
							$ssl

--target=...	Cross compilation target 		same as host
EOF
		exit;
	fi
	eval "$e"
	shift;
done

# Expand $prefix and get rid of double slashes
bindir=`eval echo "$bindir/" | sed 's/\/\{1,\}/\//g'`
etcdir=`eval echo "$etcdir/" | sed 's/\/\{1,\}/\//g'`
mandir=`eval echo "$mandir/" | sed 's/\/\{1,\}/\//g'`
datadir=`eval echo "$datadir/" | sed 's/\/\{1,\}/\//g'`
config=`eval echo "$config/" | sed 's/\/\{1,\}/\//g'`
plugindir=`eval echo "$plugindir/" | sed 's/\/\{1,\}/\//g'`
includedir=`eval echo "$includedir"/ | sed 's/\/\{1,\}/\//g'`
libevent=`eval echo "$libevent"/ | sed 's/\/\{1,\}/\//g'`

pidfile=`eval echo "$pidfile" | sed 's/\/\{1,\}/\//g'`
ipcsocket=`eval echo "$ipcsocket" | sed 's/\/\{1,\}/\//g'`
pcdir=`eval echo "$pcdir" | sed 's/\/\{1,\}/\//g'`

cat<<EOF>Makefile.settings
## BitlBee settings, generated by configure
PREFIX=$prefix
BINDIR=$bindir
ETCDIR=$etcdir
MANDIR=$mandir
DATADIR=$datadir
PLUGINDIR=$plugindir
CONFIG=$config
INCLUDEDIR=$includedir
PCDIR=$pcdir

TARGET=$target
ARCH=$arch
CPU=$cpu

DESTDIR=
LFLAGS=
EFLAGS=
EOF

srcdir=$(cd $(dirname $0);pwd)
currdir=$(pwd)
if [ "$srcdir" != "$currdir" ]; then 
	echo
	echo "configure script run from a different directory. Will create some symlinks..."
	if [ ! -e Makefile -o -L Makefile ]; then
		COPYDIRS="doc lib protocols tests utils"
		mkdir -p $(cd "$srcdir"; find $COPYDIRS -type d)
		find . -name Makefile -type l -print0 | xargs -0 rm 2> /dev/null
		dst="$PWD"
		cd "$srcdir"
		for i in $(find . -name Makefile -type f); do
			ln -s "$PWD${i#.}" "$dst/$i";
		done
		cd "$dst"
		rm -rf .bzr
	fi
	
	echo "SRCDIR=$srcdir/" >> Makefile.settings
	CFLAGS="$CFLAGS -I${dst}"
else
	srcdir=$PWD
fi

cat<<EOF>config.h
/* BitlBee settings, generated by configure
   
   Do *NOT* use any of these defines in your code without thinking twice, most
   of them can/will be overridden at run-time */

#define CONFIG "$config"
#define ETCDIR "$etcdir"
#define VARDIR "$datadir"
#define PLUGINDIR "$plugindir"
#define PIDFILE "$pidfile"
#define IPCSOCKET "$ipcsocket"
#define ARCH "$arch"
#define CPU "$cpu"
EOF



if [ -n "$target" ]; then
	PKG_CONFIG_LIBDIR=/usr/$target/lib/pkgconfig
	export PKG_CONFIG_LIBDIR
	PATH=/usr/$target/bin:$PATH
	CC=$target-cc
	LD=$target-ld
	systemlibdirs="/usr/$target/lib"
fi


if [ "$debug" = "1" ]; then
	[ -z "$CFLAGS" ] && CFLAGS=-g
	echo 'DEBUG=1' >> Makefile.settings
	CFLAGS="$CFLAGS -DDEBUG"
else
	[ -z "$CFLAGS" ] && CFLAGS="-O2 -fno-strict-aliasing"
fi

echo CFLAGS=$CFLAGS $CPPFLAGS >> Makefile.settings
echo CFLAGS+=-I${srcdir} -I${srcdir}/lib -I${srcdir}/protocols -I. >> Makefile.settings

echo CFLAGS+=-DHAVE_CONFIG_H >> Makefile.settings

if [ -n "$CC" ]; then
	CC=$CC
elif type gcc > /dev/null 2> /dev/null; then
	CC=gcc
elif type cc > /dev/null 2> /dev/null; then
	CC=cc
else
	echo 'Cannot find a C compiler, aborting.'
	exit 1;
fi

echo "CC=$CC" >> Makefile.settings;
if echo $CC | grep -qw gcc; then
	# Apparently -Wall is gcc-specific?
	echo CFLAGS+=-Wall >> Makefile.settings
fi

if [ -z "$LD" ]; then
	if type ld > /dev/null 2> /dev/null; then
		LD=ld
	else
		echo 'Cannot find ld, aborting.'
		exit 1;
	fi
fi

echo "LD=$LD" >> Makefile.settings

if [ -z "$PKG_CONFIG" ]; then
	PKG_CONFIG=pkg-config
fi

if $PKG_CONFIG --version > /dev/null 2>/dev/null && $PKG_CONFIG glib-2.0; then
	if $PKG_CONFIG glib-2.0 --atleast-version=$GLIB_MIN_VERSION; then
		cat<<EOF>>Makefile.settings
EFLAGS+=`$PKG_CONFIG --libs glib-2.0 gmodule-2.0`
CFLAGS+=`$PKG_CONFIG --cflags glib-2.0 gmodule-2.0`
EOF
	else
		echo
		echo 'Found glib2 '`$PKG_CONFIG glib-2.0 --modversion`', but version '$GLIB_MIN_VERSION' or newer is required.'
		exit 1
	fi
else
	echo
	echo 'Cannot find glib2 development libraries, aborting. (Install libglib2-dev?)'
	exit 1
fi

if [ "$events" = "libevent" ]; then
	if ! [ -f "${libevent}include/event.h" ]; then
		echo
		echo 'Warning: Could not find event.h, you might have to install it and/or specify'
		echo 'its location using the --libevent= argument. (Example: If event.h is in'
		echo '/usr/local/include and binaries are in /usr/local/lib: --libevent=/usr/local)'
	fi
	
	echo '#define EVENTS_LIBEVENT' >> config.h
	cat <<EOF>>Makefile.settings
EFLAGS+=-levent -L${libevent}lib
CFLAGS+=-I${libevent}include
EOF
elif [ "$events" = "glib" ]; then
	## We already use glib anyway, so this is all we need (and in fact not even this, but just to be sure...):
	echo '#define EVENTS_GLIB' >> config.h
else
	echo
	echo 'ERROR: Unknown event handler specified.'
	exit 1
fi
echo 'EVENT_HANDLER=events_'$events'.o' >> Makefile.settings

detect_gnutls()
{
	if $PKG_CONFIG --exists gnutls; then
		cat <<EOF>>Makefile.settings
EFLAGS+=`$PKG_CONFIG --libs gnutls` `libgcrypt-config --libs`
CFLAGS+=`$PKG_CONFIG --cflags gnutls` `libgcrypt-config --cflags`
EOF
		ssl=gnutls
		ret=1
	elif libgnutls-config --version > /dev/null 2> /dev/null; then
		cat <<EOF>>Makefile.settings
EFLAGS+=`libgnutls-config --libs` `libgcrypt-config --libs`
CFLAGS+=`libgnutls-config --cflags` `libgcrypt-config --cflags`
EOF
		
		ssl=gnutls
		ret=1;
	else
		ret=0;
	fi;
}

detect_nss()
{
	if $PKG_CONFIG --version > /dev/null 2>/dev/null && $PKG_CONFIG nss; then
		cat<<EOF>>Makefile.settings
EFLAGS+=`$PKG_CONFIG --libs nss`
CFLAGS+=`$PKG_CONFIG --cflags nss`
EOF
		
		ssl=nss
		ret=1;
	else
		ret=0;
	fi;
}

detect_ldap()
{
	TMPFILE=$(mktemp /tmp/bitlbee-configure.XXXXXX)
	if $CC -o $TMPFILE -shared -lldap 2>/dev/null >/dev/null; then
		cat<<EOF>>Makefile.settings
EFLAGS+=-lldap
CFLAGS+=
EOF
		ldap=1
		rm -f $TMPFILE
		ret=1
	else
		ldap=0
		ret=0
	fi
}

RESOLV_TESTCODE='
#include <arpa/nameser.h>
#include <resolv.h> 

int main()
{
	ns_initparse( NULL, 0, NULL );
	ns_parserr( NULL, ns_s_an, 0, NULL );
}
'

detect_resolv_dynamic()
{
	TMPFILE=$(mktemp /tmp/bitlbee-configure.XXXXXX)
	ret=1
	echo "$RESOLV_TESTCODE" | $CC -o $TMPFILE -x c - -lresolv >/dev/null 2>/dev/null
	if [ "$?" = "0" ]; then
		echo 'EFLAGS+=-lresolv' >> Makefile.settings
		ret=0
	fi

	rm -f $TMPFILE
	return $ret
}

detect_resolv_static()
{
	TMPFILE=$(mktemp /tmp/bitlbee-configure.XXXXXX)
	ret=1
	for i in $systemlibdirs; do
		if [ -f $i/libresolv.a ]; then
			echo "$RESOLV_TESTCODE" | $CC -o $TMPFILE -x c - -Wl,$i/libresolv.a >/dev/null 2>/dev/null
			if [ "$?" = "0" ]; then
				echo 'EFLAGS+='$i'/libresolv.a' >> Makefile.settings
				ret=0
			fi
		fi
	done

	rm -f $TMPFILE
	return $ret
}

if [ "$ssl" = "auto" ]; then
	detect_gnutls
	if [ "$ret" = "0" ]; then
		detect_nss
	fi
elif [ "$ssl" = "gnutls" ]; then
	detect_gnutls
elif [ "$ssl" = "nss" ]; then
	detect_nss
elif [ "$ssl" = "sspi" ]; then
	echo
elif [ "$ssl" = "openssl" ]; then
	echo
	echo 'No detection code exists for OpenSSL. Make sure that you have a complete'
	echo 'install of OpenSSL (including devel/header files) before reporting'
	echo 'compilation problems.'
	echo
	echo 'Also, keep in mind that the OpenSSL is, according to some people, not'
	echo 'completely GPL-compatible. Using GnuTLS or NSS is recommended and better'
	echo 'supported by us. However, on many BSD machines, OpenSSL can be considered'
	echo 'part of the operating system, which makes it GPL-compatible.'
	echo
	echo 'For more info, see: http://www.openssl.org/support/faq.html#LEGAL2'
	echo '                    http://www.gnome.org/~markmc/openssl-and-the-gpl.html'
	echo
	echo 'Please note that distributing a BitlBee binary which links to OpenSSL is'
	echo 'probably illegal. If you want to create and distribute a binary BitlBee'
	echo 'package, you really should use GnuTLS or NSS instead.'
	echo
	echo 'Also, the OpenSSL license requires us to say this:'
	echo ' *    "This product includes software developed by the OpenSSL Project'
	echo ' *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"'
	
	echo 'EFLAGS+=-lssl -lcrypto' >> Makefile.settings
	
	ret=1
elif [ "$ssl" = "bogus" ]; then
	echo
	echo 'Using bogus SSL code. This means some features will not work properly.'
	
	## Yes, you, at the console! How can you authenticate if you don't have any SSL!?
	if [ "$msn" = "1" -o "$yahoo" = "1" ]; then
		echo
		echo 'WARNING: The MSN and Yahoo! modules will not work without SSL. Disabling.'
		msn=0
		yahoo=0
	fi
	
	ret=1
else
	echo
	echo 'ERROR: Unknown SSL library specified.'
	exit 1
fi

if [ "$ret" = "0" ]; then
	echo
	echo 'ERROR: Could not find a suitable SSL library (GnuTLS, libnss or OpenSSL).'
	echo '       Please note that this script doesn'\''t have detection code for OpenSSL,'
	echo '       so if you want to use that, you have to select it by hand. If you don'\''t'
	echo '       need SSL support, you can select the "bogus" SSL library. (--ssl=bogus)'
	
	exit 1
fi;

if [ "$msn" = "1" -a "$ssl" != "openssl" -a "$ssl" != "gnutls" ]; then
	# Needed for MSN only. OpenSSL exports nice cipher functions already,
	# in case of GnuTLS we should be able to use gcrypt. Otherwise, use
	# built-in stuff. (Since right now those are the only two supported
	# SSL modules anyway, this is mostly unnecessary.)
	echo 'DES=des.o' >> Makefile.settings
fi

echo 'SSL_CLIENT=ssl_'$ssl'.o' >> Makefile.settings

if detect_resolv_dynamic || detect_resolv_static; then
	echo '#define HAVE_RESOLV_A' >> config.h
fi

STORAGES="xml"

if [ "$ldap" = "auto" ]; then
	detect_ldap
fi

if [ "$ldap" = 0 ]; then
	echo "#undef WITH_LDAP" >> config.h
elif [ "$ldap" = 1 ]; then
	echo
	echo 'LDAP support is a work in progress and does NOT work AT ALL right now.'
	echo
	exit 1
	
	echo "#define WITH_LDAP 1" >> config.h
	STORAGES="$STORAGES ldap"
fi

for i in $STORAGES; do
	STORAGE_OBJS="$STORAGE_OBJS storage_$i.o"
done
echo "STORAGE_OBJS="$STORAGE_OBJS >> Makefile.settings

if [ "$strip" = 0 ]; then
	echo "STRIP=\# skip strip" >> Makefile.settings;
else
	if [ "$debug" = 1 ]; then
		echo
		echo 'Stripping binaries does not make sense when debugging. Stripping disabled.'
		echo 'STRIP=\# skip strip' >> Makefile.settings
		strip=0;
	elif [ -n "$STRIP" ]; then
		echo "STRIP=$STRIP" >> Makefile.settings;
	elif type strip > /dev/null 2> /dev/null; then
		echo "STRIP=strip" >> Makefile.settings;
	else
		echo
		echo 'No strip utility found, cannot remove unnecessary parts from executable.'
		echo 'STRIP=\# skip strip' >> Makefile.settings
		strip=0;
	fi;
fi

if [ "$gcov" = "1" ]; then
	echo "CFLAGS+=--coverage" >> Makefile.settings
	echo "EFLAGS+=--coverage" >> Makefile.settings
fi

if [ "$plugins" = 0 ]; then
	echo '#undef WITH_PLUGINS' >> config.h
else
	echo '#define WITH_PLUGINS' >> config.h
fi

otrprefix=""
for i in / /usr /usr/local; do
	if [ -f ${i}/lib/libotr.a ]; then
		otrprefix=${i}
		break
	fi
done
if [ "$otr" = "auto" ]; then
	if [ -n "$otrprefix" ]; then
		otr=1
	else
		otr=0
	fi
fi
if [ "$otr" = 1 ]; then
	# BI == built-in
	echo '#define OTR_BI' >> config.h
	echo "EFLAGS+=-L${otrprefix}/lib -lotr" >> Makefile.settings
	echo "CFLAGS+=-I${otrprefix}/include" >> Makefile.settings
	echo 'OTR_BI=otr.o' >> Makefile.settings
elif [ "$otr" = "plugin" ]; then
	echo '#define OTR_PI' >> config.h
	echo "OTRFLAGS=-L${otrprefix}/lib -lotr" >> Makefile.settings
	echo "CFLAGS+=-I${otrprefix}/include" >> Makefile.settings
	echo 'OTR_PI=otr.so' >> Makefile.settings
fi

if [ ! -e doc/user-guide/help.txt ] && ! type xmlto > /dev/null 2> /dev/null; then
	echo
	echo 'WARNING: Building from an unreleased source tree without prebuilt helpfile.'
	echo 'Install xmlto if you want online help to work.'
fi

echo
if [ -z "$BITLBEE_VERSION" -a -d .bzr ] && type bzr > /dev/null 2> /dev/null; then
	nick=`bzr nick`
	if [ -n "$nick" -a "$nick" != "bitlbee" ]; then
		nick="-$nick"
	else
		nick=""
	fi
	rev=`bzr revno`
	echo 'Using bzr revision #'$rev' as version number'
	BITLBEE_VERSION=\"bzr$nick-$rev\"
fi

if [ -n "$BITLBEE_VERSION" ]; then
	echo 'Spoofing version number: '$BITLBEE_VERSION
	echo '#undef BITLBEE_VERSION' >> config.h
	echo '#define BITLBEE_VERSION '$BITLBEE_VERSION >> config.h
	echo
fi

if ! make helloworld > /dev/null 2>&1; then
	echo "WARNING: Your version of make (BSD make?) does not support BitlBee's makefiles."
	echo "BitlBee needs GNU make to build properly. On most systems GNU make is available"
	echo "under the name 'gmake'."
	echo
	if gmake helloworld > /dev/null 2>&1; then
		echo "gmake seems to be available on your machine, great."
		echo
	else
		echo "gmake is not installed (or not working). Please try to install it."
		echo
	fi
fi

cat <<EOF>bitlbee.pc
prefix=$prefix
includedir=$includedir

Name: bitlbee
Description: IRC to IM gateway
Requires: glib-2.0
Version: $BITLBEE_VERSION
Libs:
Cflags: -I\${includedir}

EOF

protocols=''
protoobjs=''

if [ "$purple" = 0 ]; then
	echo '#undef WITH_PURPLE' >> config.h
else
	if ! $PKG_CONFIG purple; then
		echo
		echo 'Cannot find libpurple development libraries, aborting. (Install libpurple-dev?)'
		exit 1
	fi
	echo '#define WITH_PURPLE' >> config.h
	cat<<EOF>>Makefile.settings
EFLAGS += $($PKG_CONFIG purple --libs)
PURPLE_CFLAGS += $($PKG_CONFIG purple --cflags)
EOF
	protocols=$protocols'purple '
	protoobjs=$protoobjs'purple_mod.o '

	# Having both libpurple and native IM modules in one binary may
	# do strange things. Let's not do that.
	msn=0
	jabber=0
	oscar=0
	yahoo=0
	
	if [ "$events" = "libevent" ]; then
		echo 'Warning: Some libpurple modules (including msn-pecan) do their event handling'
		echo 'outside libpurple, talking to GLib directly. At least for now the combination'
		echo 'libpurple + libevent is *not* recommended!'
		echo
	fi
fi

case "$CC" in
*gcc* )
	echo CFLAGS+=-MD -MF .depend/\$@.d >> Makefile.settings
	for i in . lib protocols protocols/*/; do
		mkdir -p $i/.depend
	done
esac

if [ "$msn" = 0 ]; then
	echo '#undef WITH_MSN' >> config.h
else
	echo '#define WITH_MSN' >> config.h
	protocols=$protocols'msn '
	protoobjs=$protoobjs'msn_mod.o '
fi

if [ "$jabber" = 0 ]; then
	echo '#undef WITH_JABBER' >> config.h
else
	echo '#define WITH_JABBER' >> config.h
	protocols=$protocols'jabber '
	protoobjs=$protoobjs'jabber_mod.o '
fi

if [ "$oscar" = 0 ]; then
	echo '#undef WITH_OSCAR' >> config.h
else
	echo '#define WITH_OSCAR' >> config.h
	protocols=$protocols'oscar '
	protoobjs=$protoobjs'oscar_mod.o '
fi

if [ "$yahoo" = 0 ]; then
	echo '#undef WITH_YAHOO' >> config.h
else
	echo '#define WITH_YAHOO' >> config.h
	protocols=$protocols'yahoo '
	protoobjs=$protoobjs'yahoo_mod.o '
fi

if [ "$twitter" = 0 ]; then
	echo '#undef WITH_TWITTER' >> config.h
else
	echo '#define WITH_TWITTER' >> config.h
	protocols=$protocols'twitter '
	protoobjs=$protoobjs'twitter_mod.o '
fi

if [ "$protocols" = "PROTOCOLS = " ]; then
	echo "Warning: You haven't selected any communication protocol to compile!"
	echo "         BitlBee will run, but you will be unable to connect to IM servers!"
fi

echo "PROTOCOLS = $protocols" >> Makefile.settings
echo "PROTOOBJS = $protoobjs" >> Makefile.settings

echo Architecture: $arch
case "$arch" in
Linux )
;;
GNU/* )
;;
*BSD )
;;
Darwin )
	echo 'STRIP=\# skip strip' >> Makefile.settings
;;
IRIX )
;;
SunOS )
	echo 'EFLAGS+=-lresolv -lnsl -lsocket' >> Makefile.settings
	echo 'STRIP=\# skip strip' >> Makefile.settings
	echo '#define NO_FD_PASSING' >> config.h
;;
AIX )
	echo 'EFLAGS+=-Wl,-brtl' >> Makefile.settings
;;
CYGWIN* )
	echo 'Cygwin is not officially supported.'
;;
Windows )
;;
* )
	echo 'We haven'\''t tested BitlBee on many platforms yet, yours is untested. YMMV.'
	echo 'Please report any problems at http://bugs.bitlbee.org/.'
;;
esac

if [ -n "$target" ]; then
	echo "Cross-compiling for: $target"
fi

echo
echo 'Configuration done:'

if [ "$debug" = "1" ]; then
	echo '  Debugging enabled.'
else
	echo '  Debugging disabled.'
fi

if [ "$strip" = "1" ]; then
	echo '  Binary stripping enabled.'
else
	echo '  Binary stripping disabled.'
fi

if [ "$otr" = "1" ]; then
	echo '  Off-the-Record (OTR) Messaging enabled.'
elif [ "$otr" = "plugin" ]; then
	echo '  Off-the-Record (OTR) Messaging enabled (as a plugin).'
else
	echo '  Off-the-Record (OTR) Messaging disabled.'
fi

echo '  Using event handler: '$events
echo '  Using SSL library: '$ssl
echo '  Building with these storage backends: '$STORAGES

if [ -n "$protocols" ]; then
	echo '  Building with these protocols:' $protocols
else
	echo '  Building without IM-protocol support. We wish you a lot of fun...'
fi