configure

#!/bin/sh

# Configuration script for GJDB

srcdir="`(cd \`dirname $0\`; pwd)`"
builddir="`pwd`"

arch=`uname`

doReplace () {
   echo Creating ./$1/$2 from $srcdir/$1/$2.in
   sed  -e "s,@apphome@,$apphome,g" \
	-e "s,@jdilib@,$jdilib,g" \
        -e "s,@complib@,$complib,g" \
	-e "s,@srcdir@,$srcdir,g" \
        -e "s,@builddir@,$builddir,g" \
        -e "s,@docdir@,$docdir,g" \
        -e "s,@prefix@,$prefix,g" \
        -e "s,@libdir@,$libdir,g" \
	-e "s,@bindir@,$bindir,g" \
	-e "s,@jdk@,$jdk,g" \
	-e "s,@compiler@,$compiler,g" \
	-e "s,@emacsdir@,$emacsdir,g" $srcdir/$1/$2.in > $1/$2
}

Usage () {
   echo 'Usage: SRCDIR/configure [OPTIONS] [CONFIG_FILE]

where SRCDIR is the top-level directory for the GJDB distribution and 
OPTIONS contains the following

	--apphome=DIR    The location at which java is installed.  That is,
			 java and javac are in DIR/bin, and DIR/lib contains
			 the compiled standard class libraries.  
			 This version of gjdb requires jdk1.5 or higher.

	--prefix=DIR     Default directory prefix for installation (see
			 below).  Default is $HOME.

	--sharedir=DIR   Directory containing architecture-independent code.
	                 Default is prefix/share/gjdb.

	--docdir=DIR     Directory in which to install gjdb.pdf.  Default
	                 is sharedir/doc.

	--libdir=DIR     Directory in which to install gjdb.jar.  Default
			 is sharedir/lib

	--bindir=DIR     Directory in which to install gjdb.  Default is
			 prefix/bin

	--emacsdir=DIR   Directory in which to install gjdb.el.  Default is
			 sharedir/emacs/lisp

If CONFIG_FILE is specified, re-creates only that file.
'
  exit 1
}

file=
config="$0 $@"

prefix=$HOME
while [ $# -gt 0 ]; do
   val="`echo $1 | sed 's/^.*=//'`"
   case $1 in
	--apphome=*)	apphome="$val";;
	--prefix=*)	prefix="$val";;
	--sharedir=*)   sharedir="$val";;
	--docdir=*)     docdir="$val";;
	--libdir=*)	libdir="$val";;
	--bindir=*)	bindir="$val";;
	--emacsdir=*)	emacsdir="$val";;
	--*)            Usage;;
	*)		if [ "X$file" = "X" ]; then file=$1; else Usage; fi;;
   esac
   shift
done

if [ -z "$apphome" ]; then
    javac -d . $srcdir/Javahome.java
    apphome="`java Javahome`"
    if [ ! -x $apphome/bin/javac ]; then
        apphome="`dirname $apphome`"
    fi
fi

if [ -z "$apphome" -o ! -x "$apphome/bin/javac" ]; then
    echo "Cannot find Java installation"
    exit 1
fi

rawjavaversion="`$apphome/bin/java -version 2>&1`"
majorversion=`echo $rawjavaversion | sed -e '1s/^.*"\([0-9]*\)\.[0-9]*.*$/\1/' -e 1q`
minorversion=`echo $rawjavaversion | sed -e '1s/^.*"[0-9]*\.\([0-9]*\).*$/\1/' -e 1q`
jdk=`echo $rawjavaversion | sed -e '1s/^.*"\([-0-9a-zA-Z._]*\)".*$/\1/' -e 1q`

if [ "$majorversion" != "1" -o "0$minorversion" -lt 3 ]; then
    echo "Error: Unrecognized Java version: \"$rawjavaversion\""
    exit 1
else
    echo "Configuring for JDK version $rawjavaversion"
fi

if [ -r "${apphome}/lib/tools.jar" ]; then
   jdilib="${apphome}/lib/tools.jar"
   complib="-classpath $jdilib"
else
   jdilib=
   complib=
fi
compiler=3

sharedir=${sharedir:-${prefix}/share/gjdb}
libdir=${libdir:-${sharedir}/lib}
bindir=${bindir:-${prefix}/bin}
emacsdir=${emacsdir:-${sharedir}/emacs/lisp}
docdir=${docdir:-${sharedir}/doc}

if [ -z "$file" ]; then
   if [ ! -d src/ucb/gjdb ]; then
      mkdir -p src/ucb/gjdb
   fi

   if [ ! -d bin ]; then
      mkdir bin
   fi

   if [ ! -d doc ]; then
      mkdir doc
   fi
fi

if [ -z "$file" ]; then
    doReplace . Makefile
    doReplace bin gjdb
    doReplace bin meta-gjdb
    doReplace doc Makefile
    rm -f config.status
    echo "$config" >config.status
    echo "Configuration complete.  Compile with 'make'; install with 'make install'"
else
    doReplace `dirname $file` `basename $file`
fi

exit 0