#! /usr/bin/env bash

# file      : build/c/gnu/configure
# copyright : Copyright (c) 2004-2012 Code Synthesis Tools CC
# license   : GNU GPL v2; see accompanying LICENSE file

# $1  out file
# $2  optimize (y/n)
# $3  c_extra_options
# $4  c_ld_extra_options
#
# bld_root     - build root
# project_name - project name
#


source $bld_root/dialog.bash

$echo
$echo
$echo "configuring '$project_name'"
$echo
$echo

$echo
$echo "Please enter the gcc binary you would like to use, for example 'gcc-3.4',"
$echo "'/usr/local/bin/gcc' or 'distcc gcc'."
$echo

c_gnu=`read_path --command gcc`

# Pass c_extra_options and c_ld_extra_options since those can affect the
# search paths (e.g., -m32) and target.
#
c_gnu_libraries=`$c_gnu $3 $4 -print-search-dirs | sed -e 's/libraries: =//p' -e d`

c_gnu_target=`$c_gnu $3 $4 -dumpmachine`
c_gnu_target=`$bld_root/system/config.sub "$c_gnu_target"`

if [ $? != 0 ]; then
  $echo "unable to canonicalize target system '$c_gnu_target'"
  exit 1
fi

c_gnu_target_cpu=`echo $c_gnu_target | cut -f 1 -d -`
c_gnu_target_mf=`echo $c_gnu_target | cut -f 2 -d -`
c_gnu_target_kernel=`echo $c_gnu_target | cut -f 3 -d -`
c_gnu_target_os=`echo $c_gnu_target | cut -f 4 -d -`

if [ -z "$c_gnu_target_os" ]; then

  # Old format: cpu-mf-os
  #
  c_gnu_target_os=$c_gnu_target_kernel
  c_gnu_target_kernel=
fi

optimization=

if [ "$2" == "y" ]; then

  $echo
  $echo "Please select the optimization level you would like to use:"
  $echo
  $echo "(1) -O1 [Tries to reduce code size and execution time, without"
  $echo "         performing any optimizations that take a great deal of"
  $echo "         compilation time.]"
  $echo "(2) -O2 [Performs nearly all supported optimizations that do not"
  $echo "         involve a space-speed tradeoff.]"
  $echo "(3) -O3 [Optimize even more.]"
  $echo "(4) -Os [Optimize for size.]"
  $echo

  optimization=`read_option "-O1 -O2 -O3 -Os" "-O2"`

fi

echo "c_gnu := $c_gnu"                              > $1
echo "c_gnu_libraries := $c_gnu_libraries"         >> $1
echo "c_gnu_optimization_options := $optimization" >> $1
echo "c_gnu_target := $c_gnu_target"               >> $1
echo "c_gnu_target_cpu := $c_gnu_target_cpu"       >> $1
echo "c_gnu_target_mf := $c_gnu_target_mf"         >> $1
echo "c_gnu_target_kernel := $c_gnu_target_kernel" >> $1
echo "c_gnu_target_os := $c_gnu_target_os"         >> $1