--- libtiff.SlackBuild	2006-08-17 23:11:01.000000000 -0400
+++ libtiff.SlackBuild.s390x	2006-09-14 00:43:40.000000000 -0400
@@ -13,7 +13,7 @@
   SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
 elif [ "$ARCH" = "i486" ]; then
   SLKCFLAGS="-O2 -march=i486 -mtune=i686"
-elif [ "$ARCH" = "s390" ]; then
+elif [ "$ARCH" = "s390x" ]; then
   SLKCFLAGS="-O2"
 elif [ "$ARCH" = "x86_64" ]; then
   SLKCFLAGS="-O2"
@@ -36,6 +36,7 @@
 CFLAGS="$SLKCFLAGS" \
 ./configure \
   --prefix=/usr \
+  --libdir='${exec_prefix}/lib64' \
   --program-prefix="" \
   --program-suffix="" \
   $ARCH-slackware-linux