#! /bin/sh
#
# Copyright (C) 1993, Digital Equipment Corporation
# All rights reserved.
# See the file COPYRIGHT for a full description.
#
# Last modified on Mon Nov  1 10:48:44 PST 1993 by kalsow
#      modified on Mon May 24 11:21:16 PDT 1993 by mjordan

quake="/ex32/usr/local/bin/quake"
template_dir="/ex32/usr/local/lib/m3/pkg/m3build/templates"

template="LINUX"
build_dir="LINUX"
start_dir="."
quake_args=""
targets=""
src_ok="0"
use_overrides="0"
verbose="n"

#
# parse the command line
#
while
  case "$1" in
  "") break;;
  -b) shift ; build_dir="$1" ; template="$1" ;;
  -T) shift ; template_dir="$1" ;;
  -F) shift ; quake_args="$quake_args $1" ;;
  -S) src_ok="1" ;;
  -O) use_overrides="1" ;;
  -d) shift ; start_dir="$1" ;;
  -v) verbose="y" ;;
  -*) quake_args="$quake_args $1" ;;
  *)  targets="$targets $1" ;;
  esac
do
  shift
done

#
# get to the initial directory
#
cd "$start_dir"
start_dir=`pwd`
base=`basename "$start_dir"`
parent=`cd .. ; pwd`

#
# move to the directory with derived objects
#
if [ $src_ok = "0" ]
then
  if [ $base = "src" ]
  then
    echo "m3build: use -S to build in the 'src' directory"
    exit 1
  elif [ $base = $build_dir ]
  then
    package_dir=$parent
  elif [ -d "$build_dir" ]
  then
    package_dir="$start_dir"
    echo "--- building in $build_dir ---"
    cd "$build_dir"
  elif [ -d src -a -r "$template_dir/$template" ]
  then
    package_dir="$start_dir"
    echo "mkdir $build_dir"
    mkdir "$build_dir"
    echo "--- building in $build_dir ---"
    cd "$build_dir"
  else
    echo "m3build: no build directory $build_dir"
    exit 1
  fi
else
# assume that we're in an immediate subdirectory of the package
  package_dir="$parent"
  build_dir="$base"
fi
package=`basename "$package_dir"`

#
# check for a makefile
#
if [ -r m3makefile ]
then
  makefile="$package_dir/$build_dir/m3makefile"
  overrides="$package_dir/$build_dir/m3overrides"
elif [ -r "../src/m3makefile" ]
then
  makefile="$package_dir/src/m3makefile"
  overrides="$package_dir/src/m3overrides"
else
  echo "m3build: cannot locate an m3makefile"
  exit 1
fi

#
# check for an overrides file
#
if [ -r "$overrides" ]
then
  if [ "$use_overrides" != "0" ]
  then
    quake_args="$quake_args $overrides"
  else
    echo "m3build: ignoring $overrides"
  fi
else
  if [ "$use_overrides" != "0" ]
  then
    echo "m3build: missing $overrides"
  fi
fi

#
# did we get an explicit target?
#
if [ -z "$targets" ]
then
  targets="all"
fi

#
# prepare for the worst...
#
# trap 'exit 1' 1 2 3 15

#
# finally, evaulate the makefile once for each target
#
for target in $targets
do
  if [ x"$verbose" = xy ]
  then
  echo "$quake -D_$target -DPACKAGE_DIR=$package_dir -DPACKAGE=$package -DBUILD_DIR=$build_dir $template_dir/$template $quake_args $makefile"
  fi
  if $quake -D_$target -DPACKAGE_DIR=$package_dir -DPACKAGE=$package -DBUILD_DIR=$build_dir $template_dir/$template $quake_args $makefile
  then
    :
  else
    exit 1
  fi
done