awful architecture/OS hack for unix platforms

#!/bin/sh
case `hostname` in
  timberwolf*) PATH=/usr/bin:$PATH; export PATH ;;
esac

if uname -p >/dev/null 2>/dev/null; then
  PROC=`uname -p`
else
  PROC=unknown
fi

if [ "x$PROC" != xunknown ]; then
  : do nothing
elif [ -x /bin/arch ]; then
  PROC=`/bin/arch`
elif uname >/dev/null 2>/dev/null; then
  case `uname` in
    AIX) echo rs6000-aix ;;
    FreeBSD)
      OS=bsd
      if uname -m >/dev/null 2>/dev/null; then
        PROC=`uname -m`
      else
        PROC=unknown
      fi
      echo $PROC-$OS ;;
    Linux)
      OS=linux;
      if uname -m >/dev/null 2>/dev/null; then
        case `uname -m` in
          i586|i486|i386) PROC=x86 ;;
          *) PROC=`uname -m` ;;
        esac
      else
        PROC=unknown
      fi
      echo $PROC-$OS ;;
    *) echo unknown ;;
  esac
  exit 0
fi

case $PROC in
  sun4) PROC=sparc ;;
  powerpc) PROC=ppc ;;
  i386|i486|i586|i686|Pentium*|AMD?Athlon*) PROC=x86 ;;
  x86_64|amd64) PROC=amd64 ;;
esac

case $PROC in
  sparc) case `uname -r` in
           4.*)      OS=sunos ;;
           [5-9].*)  OS=solaris ;;
           *)        echo "unknown-OS" 1>&2; exit 1 ;;
         esac ;;
  ppc)  case `uname` in
           Darwin) OS=darwin ;;
           *)        echo "unknown-OS" 1>&2; exit 1 ;;
        esac ;;
  mips) case `uname -s` in
          IRIX)
        case `uname -r` in
              5.*) OS=irix5 ;;
              *)        echo "unknown-OS" 1>&2; exit 1 ;;
            esac ;;
          Linux) OS=linux ;;
          *)        echo "unknown-OS" 1>&2; exit 1 ;;
         esac ;;
  x86|amd64)   case `uname` in
            FreeBSD) OS=bsd ;;
            Linux) OS=linux ;;
            Darwin) OS=darwin ;;
            *) OS=unknown ;;
         esac ;;
  alpha) case `uname` in
           OSF1) OS=osf1 ;;
           Linux|linux) OS=linux ;;
           *) OS=unknown ;;
         esac ;;
  *) echo "unknown-OS" 1>&2; exit 1 ;;
esac
echo $PROC-$OS


exit 0

for i in /usr/local/bin/bintype /bin/arch /usr/ucb/arch /usr/local/bin/cputype
do
  if [ -x $i ]; then export CPU=`$i` ; break; fi
done

if [ "$CPU" = "i586" ]; then
  CPU=i486
fi