#!/bin/sh

# Last edited: 2009-08-31 13:23:58 by piumarta on ubuntu.piumarta.com

help() {
    cat <<EOF
Usage: $0 [options...]
Options include:
  --help                print this message and then exit
  --src=<directory>     look for generated interpreter sources in <directory>
  --prefix=<directory>  install into <prefix>/{bin,lib,man}
  --CFLAGS=<flags>      override default compiler flags
  --without-<plugin>    do not build the named plugin
  --without-gl          disable everything that depends on OpenGL
  --without-SUGAR       disable support for SUGAR environment
Notes:
1. By default the CFLAGS will be set to create optimised binaries.  If you are
   debugging the VM you probably want to use '--CFLAGS=-g' when invoking this
   script.
2. --CFLAGS and -without-* settings will be preserved in subsequent invocations
   of CMake, including those driven implicitly by changed dependencies.  If you
   need to turn off a seting (to re-enable a plugin or restore the default
   CFLAGS) just give the relevant options with empty arguments, like this:
     $0 --CFLAGS= --without-UUIDPlugin=
3. Wizards can set any CMake variable from the command line with the option:
     --<CMakeVariableName>=<value>
4. In case it isn't already obvious, this is NOT the autotools 'configure'
   script.  It is named so that 'configure; make' works in the expected way.
5. Bug reports, bug fixes and suggestions for improvement should be sent to the
   author (Ian Piumarta) at: <firstName> (at) <lastName> (dot) com
EOF
    stop=true
}

config="`dirname \"$0\"`"
unix="`dirname \"${config}\"`"
guess=`"${config}"/config.guess`
host=`"${config}"/config.sub ${guess}`
srcDir="${unix}/src" # default to platforms/unix/src

stop=false
debug_configure=false

error () {
    echo "$*" >&2
}

dump () {
    echo "VM_VERSION = ${VM_VERSION}"
    echo "unix       = ${unix}"
    echo "config     = ${config}"
    echo "host       = ${host}"
    echo "srcDir     = ${srcDir}"
    echo "args       = ${args}"
    stop=true
}

# Set srcDir to a fully specified path name, and update cmake args to match
setSrcDir() {
    srcDirChanged="true"
    path="`echo $1 | sed 's/--src=//'`"
    srcDir="`(cd ${path}; if test $? -ne 0; then echo BADPATH; else pwd; fi)`"
    if test ${srcDir} = "BADPATH"
    then
      echo problem resolving source path for $1 as ${unix}/${offset}
      exit 1
    fi
    args="${args} -DOPT--src=${srcDir}"
}

while [ $# -gt 0 ]; do
    case $1 in
	--help)			help; exit 0;;
	--debug-configure)	dump;;
	--src=*)		setSrcDir "${1}";;
	--*=*)			args="${args} -DOPT${1}";;
	--*)			args="${args} -DOPT${1}=1";;
	-*)			args="${args} ${1}";;
	*)			error "unknown option: $1";;
    esac
    shift
done

interp_h="${srcDir}/vm/interp.h"
if test ! -f "${interp_h}"
then
    echo problem locating generated source files: ${interp_h} not found
    echo use --src= parameter to specify source files path relative to ${unix}
    exit 1
fi

vmmversion="`tr '\015 ' '\012\012' < \"${interp_h}\" | sed '1,/VMMaker/d;q'`"
svnversion=`svn info "${unix}/ChangeLog" | fgrep Revision: | awk '{print $2}'`

VM_VERSION="${vmmversion}-${svnversion}"alpha

if ${stop}; then
    exit 1
fi

echo "-- Configuring squeak ${VM_VERSION} for ${host}"

cmake ${unix} \
  -DVM_HOST="${host}" \
  -DVM_VERSION="${VM_VERSION}" \
  $args "$@"

echo -- Build will use generated sources from: ${srcDir}
if test ! $srcDirChanged
then
    echo "   (use --src=<directory> to specify generated interpreter sources in another location)"
fi