Add script to modify HW libs in AppImage

Author: ferdnyc

installer/mangle-hw-libs.sh

@@ -0,0 +1,56 @@
+#!/bin/sh
+
+
+usage()
+{
+    progname=$(basename $0)
+    cat << __EOM__
+${progname} - Replace system paths encoded into shared libraries
+
+Usage: ${progname} HW_LIB_DIR
+Arguments:
+  HW_LIB_DIR	The directory containing libraries to be processed.
+            	(Files will be modified IN PLACE, without backups.)
+__EOM__
+}
+
+# Bail with usage information, if the directory path is unset
+[ -z $1 ] && usage && exit -1
+
+# We take one argument, the path in which to look for target libraries
+hw_lib_dir=$(realpath "$1")
+
+# Count files processed
+((processed=0))
+
+echo -n "Looking for libvdpau.so.1..."
+hwlib="${hw_lib_dir}/libvdpau.so.1"
+if [ -w "${hwlib}" ]; then
+  echo -n " found, processing..."
+  # 1: /usr/lib/x86_64-linux-gnu/vdpau => ./../lib/x86_64-linux-gnu/vdpau
+  # 2: /usr/lib/vdpau => ./../lib/vdpau
+  sed -i \
+    -e 's,/usr\(/lib/x86_64-linux-gnu/vdpau\),\./\.\.\1,g' \
+    -e 's,/usr\(/lib/vdpau\),\./\.\.\1,g' \
+    "${hwlib}"
+  echo " done."
+  ((processed+=1))
+else
+  echo " NOT found, skipping."
+fi
+
+echo -n "Looking for libva.so.1..."
+hwlib="${hw_lib_dir}/libva.so.1"
+if [ -w "${hwlib}" ]; then
+  echo -n " found, processing..."
+  # /usr/lib/x86_64-linux-gnu/dri => ./../lib/x86_64-linux-gnu/dri
+  sed -i -e 's,/usr\(/lib/x86_64-linux-gnu/dri\),\./\.\.\1,g' "${hwlib}"
+  echo " done."
+  ((processed+=1))
+else
+  echo " NOT found, skipping."
+fi
+
+# Final summary
+echo "Files processed: ${processed}" && exit 0
+