create-icons:
        # requires inkscape and imagemagick to be installed
        @if [ ! -x /usr/bin/convert ]; then \
                echo "ERROR: imagemagick not installed!" ; \
                false ; \
        fi
        @if [ ! -x /usr/bin/inkscape ]; then \
                echo "ERROR: inkscape not installed!" ; \
                false ; \
        fi

        # create XDG compatible icons from SVG
        for i in 16 22 32 48 64 128; do \
                mkdir -p "icons/hicolor/$${i}x$${i}/apps" ; \
                inkscape --export-width=$${i} \
                         --export-height=$${i} \
                         --export-png="$(CURDIR)/icons/hicolor/$${i}x$${i}/apps/install-usb-gui.png" \
                                $(CURDIR)/icons/install-usb-gui.svg ; \
        done

        # create XPM icons for the debian menu system
        mkdir -p icons/pixmaps
        convert icons/hicolor/32x32/apps/install-usb-gui.png icons/pixmaps/install-usb-gui.xpm
        convert icons/hicolor/16x16/apps/install-usb-gui.png icons/pixmaps/install-usb-gui-16.xpm

        inkscape --export-width=160 \
                 --export-height=51 \
                 --export-png="$(CURDIR)/src/install-usb-title.png" \
                                $(CURDIR)/icons/install-usb-title.svg ; \