Include gphoto2 driver libraries into AppImage

Author: victoryforce

packaging/AppImage/AppRun

@@ -14,6 +14,8 @@ HERE="$(dirname "$(readlink -f "${0}")")"
 
 source "$HERE"/apprun-hooks/"linuxdeploy-plugin-gtk.sh"
 
+export CAMLIBS=$HERE/usr/lib/libgphoto2/`ls -1 --group-directories-first $HERE/usr/lib/libgphoto2|head -1`
+
 if [[ ! -z $APPIMAGE ]] ; then
   BINARY_NAME=$(basename "$ARGV0")
   if [[ ! -z "$1" ]] && [[ -e "$HERE/usr/bin/$1" ]] ; then

tools/appimage-build-script.sh

@@ -48,6 +48,12 @@ sed -i 's/\/usr\/bin\///' ../AppDir/usr/share/applications/org.darktable.darktab
 mkdir -p ../AppDir/usr/share/lensfun
 cp -a /var/lib/lensfun-updates/* ../AppDir/usr/share/lensfun
 
+# Include gphoto2 driver libraries. We also have to set the CAMLIBS
+# environment variable in AppRun.wrapped accordingly when starting
+# AppImage so that libgphoto2 can find these drivers.
+mkdir -p ../AppDir/usr/lib/libgphoto2
+cp -a /usr/lib/x86_64-linux-gnu/libgphoto2/* ../AppDir/usr/lib/libgphoto2
+
 # Since linuxdeploy is itself an AppImage, we don't rely on it being installed
 # on the build system, but download it every time we run this script. If that
 # doesn't suit you (for example, you want to build an AppImage without an