diff --git a/libtimezonemap/libtimezonemap.SlackBuild b/libtimezonemap/libtimezonemap.SlackBuild
index 02985e1..0b4c2d9 100644
--- a/libtimezonemap/libtimezonemap.SlackBuild
+++ b/libtimezonemap/libtimezonemap.SlackBuild
@@ -42,6 +42,20 @@ TMP=${TMP:-/tmp/csb}
 PKG=$TMP/package-$PRGNAM
 OUTPUT=${OUTPUT:-/tmp}
 
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
 set -e
 
 rm -rf $PKG