#!/bin/sh

satcompetition=no

log=no
debug=no
optimize=no
stats=undefined
trace=undefined
static=yes
shared=no
thirtytwobit=no
static=no

while [ $# -gt 0 ]
do
  case $1 in
    -l|--log) debug=yes; log=yes;;
    -g|--debug) debug=yes; optimize=no;;
    -s|--stats) stats=yes;;
    -t|--trace) trace=yes;;
    --no-stats) stats=no;;
    --no-trace) trace=no;;
    -32|--32|-m32) thirtytwobit=yes;;
    -static|--static) static=yes;;
    -O) debug=no; optimize=yes;;
    *) cat <<EOF
usage: ./configure [<option> ...]

where <option> is one of the following:

  -g|--debug           includ debugging code and symbols
  -l|--log             add low level logging code
  -s|--stats           include and enable more expensive stats counters
  -t|--trace           compile with trace generation support (more memory)
  --no-stats           disable expensive stats
  --no-trace           enable trace generation (less memory)
  -32|--32|-m32        compile for 32 bit machine even on 64 bit host
  -static|--static     only produce static library
  -shared|--shared     produce shared library as well
  -O                   optimize a lot and disable trace generation
EOF
exit 1
;;
  esac
shift
done

echo "version ... `cat VERSION`"

if [ $satcompetition = yes ]
then
  debug=no
  optimize=yes
  stats=no
  trace=no
  thirtytwobit=yes
  static=yes
  shared=no
fi

echo "debug ... $debug"
echo "optimize ... $optimize"
echo "log ... $log"

if [ $stats = undefined ]
then
  if [ $optimize = yes ]
  then
    stats=no
  else
    stats=yes
  fi
fi
echo "stats ... $stats"

if [ $trace = undefined ]
then
  if [ $optimize = yes ]
  then
    trace=no
  else
    trace=yes
  fi
fi
echo "trace ... $trace"

echo "static ... $static"

echo "shared ... $shared"

[ "X$CC" = X ] && CC=gcc

if [ X"$CFLAGS" = X ]
then
  case X"$CC" in
    *wine*|*mingw*) CFLAGS="-DNGETRUSAGE -DNALLSIGNALS";;
    *);;
  esac
  [ $log = yes ] && CFLAGS="$CFLAGS -DLOGGING"
  [ $stats = yes ] && CFLAGS="$CFLAGS -DSTATS"
  [ $trace = yes ] && CFLAGS="$CFLAGS -DTRACE"
  [ $static = yes ] && CFLAGS="$CFLAGS -static"
  case X"$CC" in
    X*gcc*)
      CFLAGS="$CFLAGS -Wall -Wextra"
      [ $thirtytwobit = yes ] && CFLAGS="$CFLAGS -m32"
      if [ $debug = yes ]
      then
        CFLAGS="$CFLAGS -g3 -ggdb"
      else
	CFLAGS="$CFLAGS -DNDEBUG"
	if [ $optimize = yes ]
	then
	  CFLAGS="$CFLAGS -O3 -fomit-frame-pointer -finline-limit=1000000"
	else
	  CFLAGS="$CFLAGS -O2"
	fi
      fi
      ;;
    *)
      if [ $debug = yes ]
      then
        CFLAGS="$CFLAGS -g"
      else
        CFLAGS="$CFLAGS -O"
      fi
      ;;
  esac
fi

TARGETS="picosat picomus libpicosat.a"
if [ $shared = yes ]
then
  TARGETS="$TARGETS libpicosat.so"
  CFLAGS="$CFLAGS -fPIC"
fi
echo "targets ... $TARGETS"

echo "cc ... $CC"

echo "cflags ... $CFLAGS"

echo -n "makefile ..."
rm -f makefile
sed \
  -e "s,@CC@,$CC," \
  -e "s,@CFLAGS@,$CFLAGS," \
  -e "s,@TARGETS@,$TARGETS," \
makefile.in > makefile
echo " done"