multimedia/mlt: Miscellaneous cleanups.

multimedia/mlt/README

@@ -5,9 +5,5 @@ of applications.  The functionality of the system is provided via an
 assortment of ready to use tools, XML authoring components, and an 
 extensible plug-in based API. 
 
-This requires libdv, libsamplerate, and ffmpeg.
-libquicktime is optional but recommended, since it will be needed
-by kdenlive anyway.
-
-Optional:
-By default PYTHON=yes for openshot.
+This requires libdv and ffmpeg.  libquicktime is optional but recommended, 
+since it will be needed by kdenlive anyway.

multimedia/mlt/mlt.SlackBuild

@@ -23,10 +23,19 @@
 
 PRGNAM=mlt
 VERSION=${VERSION:-0.5.4}
-ARCH=${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
@@ -52,6 +61,9 @@ elif [ "$ARCH" = "i686" ]; then
 elif [ "$ARCH" = "x86_64" ]; then
   SLKCFLAGS="-O2 -fPIC"
   LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
 fi
 
 set -e