gistfile1.sh

#!/bin/sh

#ARCH=`uname -m`
if [ -z "$ARCH" ]; then
  #case "$( uname -m )" in
  case "i686" in
    i686) ARCH=i686 ;;
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi
echo "$ARCH"

if [ "$ARCH" = "i486" ]; then
      SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
     SLKCFLAGS="-O2 -march=i686 -mtune=i686" 
elif [ "$ARCH" = "x86_64" ]; then
      SLKCFLAGS="-O2 -fPIC"
      LIBDIRSUFFIX="64"
fi

echo "$ARCH"
echo "$SLKCFLAGS"
echo "done."

gistfile2.sh-session

i686
i686
-O2 -march=i686 -mtune=i686
done.