#!/bin/sh

if [ -z "$4" ] ; then
	echo "Usage: mergedirs <src-dir> <src-dir-rel> <obj-dir> <list-of-dirs>"
	exit 1
	fi
cpp=${CPP:-cc -E}
SRCDIR=$1
shift
SRCREL=$1
case $SRCDIR in
	/*) ;;
	*) SRCREL="../$SRCREL" ;;
	esac
shift
OBJDIR=$1
LIBDIR=$OBJDIR/lib
CONFDIR=$OBJDIR/conf
shift

echo "Merging system-dependent modules ($@)"
MODULES=`for a in $@ ; do
		cat $SRCDIR/sysdep/config.h $SRCDIR/$a/Modules |
		$cpp -U unix -D MACROS_ONLY -I $OBJDIR - |
		sed "/^[ ]*\$/d;/^#/d;s@\\(.*\\)@\\1 $a/\\1@"
		done |
	sort -k1,1 -u |
	cut -d ' ' -f 2`
rm -rf $LIBDIR $CONFDIR
mkdir -p $LIBDIR $CONFDIR
for a in $MODULES ; do
	b=`basename $a`
	case $b in
		*.h)	ln -s $SRCREL/$a $LIBDIR/$b
			;;
		*.c)	OBJ=`echo $b | sed 's/\.c$/\.o/'`
			OBJS="$OBJS $OBJ"
			SRCS="$SRCS \\
	$b"
			ln -s $SRCREL/$a $LIBDIR/$b
			;;
		*.Y)	CONFS="$CONFS\$(srcdir)/$a "
			ln -s $SRCREL/$a $CONFDIR/$b
			;;
		*)	echo "$b: Unknown file type"
			exit 1
			;;
		esac
	done

cat >$LIBDIR/Makefile <<EOF
source=$SRCS
lib-dest=birdlib.a
root-rel=../

include ../Rules
EOF

sed <$SRCDIR/conf/Makefile >$CONFDIR/Makefile "s|@CONFS@|$CONFS|"
CONFS=`cd $SRCDIR ; ls conf/*.[chl]`
for a in $CONFS ; do
	ln -s $SRCREL/$a $CONFDIR/
done
