diff --git a/academic/chemtool/chemtool.SlackBuild b/academic/chemtool/chemtool.SlackBuild
index 041f6c979c..f0f8eeb22a 100644
--- a/academic/chemtool/chemtool.SlackBuild
+++ b/academic/chemtool/chemtool.SlackBuild
@@ -2,7 +2,7 @@
 
 # Slackware build script for chemtool
 
-# Copyright 2006-2009  Robby Workman  (http://rlworkman.net)
+# Copyright 2006,2008,2009,2010  Robby Workman, Northport, Alabama, USA 
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -24,10 +24,19 @@
 
 PRGNAM=chemtool
 VERSION=1.6.9
-ARCH=${ARCH:-i486}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 
+# Automatically determine the architecture we're building on:
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) export ARCH=i486 ;;
+    arm*) export ARCH=arm ;;
+    # Unless $ARCH is already set, use uname -m for all other archs:
+       *) export ARCH=$( uname -m ) ;;
+  esac
+fi
+
 CWD=$(pwd)
 TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM
@@ -42,6 +51,9 @@ elif [ "$ARCH" = "i686" ]; then
 elif [ "$ARCH" = "x86_64" ]; then
   SLKCFLAGS="-O2 -fPIC"
   LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
 fi
 
 rm -rf $PKG 
@@ -68,6 +80,8 @@ make install DESTDIR=$PKG
 find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
 
+find $PKG/usr/man -type f -exec gzip -9 {} \;
+
 mkdir -p $PKG/usr/share/{applications,pixmaps}
 cat $CWD/$PRGNAM.desktop > $PKG/usr/share/applications/$PRGNAM.desktop
 cat $CWD/chemtool.png > $PKG/usr/share/pixmaps/chemtool.png 
@@ -77,12 +91,6 @@ cp -a examples/ ChangeLog INSTALL NEWS README TODO using_chemtool.html \
   $PKG/usr/doc/$PRGNAM-$VERSION
 cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
 
-( cd $PKG/usr/man
-  find . -type f -exec chmod 0644 {} \;
-  find . -type f -exec gzip -9 {} \;
-  for i in $(find . -type l) ; do ln -s $(readlink $i).gz $i.gz ; rm $i ; done
-)
-
 mkdir -p $PKG/install
 cat $CWD/slack-desc > $PKG/install/slack-desc
 cat $CWD/doinst.sh > $PKG/install/doinst.sh