#!/bin/sh

# default parameters
prefix="/usr/local"
cc="gcc"
ar="ar"
cpu=`uname -m`
case "$cpu" in
  i386|i486|i586|i686)
    cpu="x86"
    mmx="yes"
  ;;
  *)
    mmx="no"
  ;;
esac
gprof="no"

if [ "$1" = "-h" -o "$1" = "--help" ] ; then
cat << EOF

Usage: configure [options]
Options: [defaults in brackets after descriptions]

  --help                  print this message
EOF
echo "  --prefix=PREFIX         install in PREFIX [$prefix]"
echo "  --cc=CC                 use C compiler CC [$cc]"
echo "  --cpu=CPU               force cpu to CPU  [$cpu]"
echo "  --disable-mmx           disable mmx usage"
echo "  --enable-gprof          enable profiling with gprof [$gprof]"
exit 1
fi

for opt do
  case "$opt" in
  --prefix=*) prefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --cc=*) cc=`echo $opt | cut -d '=' -f 2`
  ;;
  --cpu=*) cpu=`echo $opt | cut -d '=' -f 2`
  ;;
  --disable-mmx) mmx="no"
  ;;
  --enable-gprof) gprof="yes"
  ;;
  esac
done

echo "Install prefix   $prefix"
echo "C compiler       $cc"
echo "CPU              $cpu"
echo "MMX enabled      $mmx"
echo "gprof enabled    $gprof"

echo "Creating config.mk and config.h"

echo "# Automatically generated by configure - do not modify" > config.mk
echo "/* Automatically generated by configure - do not modify */" > config.h

echo "PREFIX=$prefix" >> config.mk
echo "CC=$cc" >> config.mk
echo "AR=$ar" >> config.mk
if [ "$cpu" = "x86" ] ; then
  echo "CONFIG_CPU_X86=y" >> config.mk
  echo "#define CONFIG_CPU_X86 1" >> config.h
fi
if [ "$mmx" = "yes" ] ; then
  echo "CONFIG_MMX=y" >> config.mk
  echo "#define CONFIG_MMX 1" >> config.h
fi
if [ "$gprof" = "yes" ] ; then
  echo "CONFIG_GPROF=y" >> config.mk
  echo "#define CONFIG_GPROF 1" >> config.h
fi