#!/bin/sh
#                               options script 
# 
# This file was developed by Reid Spencer and is distributed under the
# University of Illinois Open Source License. See LICENSE.TXT for details.
# 
#===------------------------------------------------------------------------===#

# This script lets you set sticky options that can be set once with this command
# and then ignored for remaining commands used from the same directory. 

# Include the library. This will either read the options from the .options
# file or it will set the variables to their default values.
if test ! -z "$LLVM_TOP" ; then
  if test -f "$LLVM_TOP/library.sh" ; then
    . "$LLVM_TOP/library.sh"
  else
    echo "Your LLVM_TOP variable is not set to an llvm-top directory"
    exit 1
  fi
elif test -f ./library.sh ; then
  . ./library.sh
elif test -f ../library.sh ; then
  . ../library.sh
else
  echo Please run $0 from the llvm-top directory or a module directory.
  exit 1
fi

# Process the arguments to set the new values
msg 3 "Processing new option arguments"
for arg in "$@" ; do
  case "$arg" in
  +ASSERTIONS)    ASSERTIONS=1 ;;
  -ASSERTIONS)    ASSERTIONS=0 ;;
  +CHECKING)      CHECKING=1 ;;
  -CHECKING)      CHECKING=0 ;;
  +DEBUG)         DEBUG=1 ;;
  -DEBUG)         DEBUG=0 ;;
  +DOXYGEN)       DOXYGEN=1 ;;
  -DOXYGEN)       DOXYGEN=0 ;;
  +OPT_FOR_SIZE)  OPT_FOR_SIZE=1 ;;
  -OPT_FOR_SIZE)  OPT_FOR_SIZE=0 ;;
  +OPTIMIZED)     OPTIMIZED=1 ;;
  -OPTIMIZED)     OPTIMIZED=0 ;;
  +PROFILING)     PROFILING=1 ;;
  -PROFILING)     PROFILING=0 ;;
  +STRIPPED)      STRIPPED=1 ;;
  -STRIPPED)      STRIPPED=0 ;;
  +THREADS)       THREADS=1 ;;
  -THREADS)       THREADS=0 ;;
  +VERBOSE)       VERBOSE=1 ;;
  -VERBOSE)       VERBOSE=0 ;;
  ASSERTIONS=*)   ASSERTIONS=`echo "$arg" | sed -e 's/ASSERTIONS=//'` ;;
  CHECKING=*)     CHECKING=`echo "$arg" | sed -e 's/CHECKING=//'` ;;
  DEBUG=*)        DEBUG=`echo "$arg" | sed -e 's/DEBUG=//'` ;;
  DESTDIR=*)      DESTDIR=`echo "$arg" | sed -e 's/DESTDIR=//'` ;;
  DOXYGEN=*)      DOXYGEN=`echo "$arg" | sed -e 's/DOXYGEN=//'` ;;
  LLVM_TOP=*)     LLVM_TOP=`echo "$arg" | sed -e 's/LLVM_TOP=//'` ;;
  OPT_FOR_SIZE=*) OPT_FOR_SIZE=`echo "$arg" | sed -e 's/OPT_FOR_SIZE=//'` ;;
  OPTIMIZED=*)    OPTIMIZED=`echo "$arg" | sed -e 's/OPTIMIZED=//'` ;;
  PREFIX=*)       PREFIX=`echo "$arg" | sed -e 's/PREFIX=//'` ;;
  PROFILING=*)    PROFILING=`echo "$arg" | sed -e 's/PROFILING=//'` ;;
  STRIPPED=*)     STRIPPED=`echo "$arg" | sed -e 's/STRIPPED=//'` ;;
  TARGETS_TO_BUILD=*) 
              TARGETS_TO_BUILD=`echo "$arg" | sed -e 's/TARGETS_TO_BUILD=//'` ;;
  THREADS=*)      THREADS=`echo "$arg" | sed -e 's/THREADS=//'` ;;
  USE_OBJ_DIR=*)  USE_OBJ_DIR=`echo "$arg" | sed -e 's/USE_OBJ_DIR=//'` ;;
  VERBOSE=*)      VERBOSE=`echo "$arg" | sed -e 's/VERBOSE=//'` ;;
  *)              die 1 "Unrecognized option: $arg" ;;
  esac
done

# Write the new options set to the .options file
msg 3 "Write options to .options file"
cat <<__EOF__ > "$options"
# LLVM configuration options database.
# This script is generated by "options" and included into library.sh
ASSERTIONS="$ASSERTIONS"
CHECKING="$CHECKING"
DEBUG="$DEBUG"
DESTDIR="$DESTDIR"
DOXYGEN="$DOXYGEN"
LLVM_TOP="$LLVM_TOP"
OPT_FOR_SIZE="$OPT_FOR_SIZE"
OPTIMIZED="$OPTIMIZED"
PREFIX="$PREFIX"
PROFILING="$PROFILING"
STRIPPED="$STRIPPED"
TARGETS_TO_BUILD="$TARGETS_TO_BUILD"
THREADS="$THREADS"
USE_OBJ_DIR="$USE_OBJ_DIR"
VERBOSE="$VERBOSE"
__EOF__

# If there were no arguments, just print the options for the user
msg 3 "Printing options"
if test "$#" -eq 0 ; then
  cat "$options" | grep "="
fi