#!/bin/sh
#
# $Id$
#
# This simple script is used to gather compile time metrics.  You can use
# it with make like this:
#
#  $ make CXX=g++_metric.sh
#

commandline=$@
# find the target and save it to a variable
until [ -z "$1" ] # test all command line parameters
do
  if [ "-o" = "$1" ]
  then
    shift
    target=$1
    break
  fi  
  shift
done

#unfortunately, time only goes down to seconds, so do it by hand...
start=`date +%s%N`
g++ $commandline

retval=$?

# only echo the compile time if the call was successful
if [ $retval -eq 0 ]; then
  stop=`date +%s%N`

  let "total = (${stop}-${start})"

  # convert to microseconds even though we will only use milliseconds in the 
  # graphs
  let "total = ($total)/1000"

  # add the path, relative to $ACE_ROOT, to the beginning of the object name
  # so that it can be used to name the object when it's processed.  
  # Note that this line is commented so the output won't interfere with the
  # preprocessor output, i.e., when used by the tao_idl compiler.
  echo "//compile time: ${PWD#$ACE_ROOT/}/${target} $total"
fi

exit $retval