g++  -g -O3 -march=native  -Wall -Wno-inline   -o x64 alarm.o attach.o autostart.o autostart-prg.o charset.o clkguard.o clipboard.o cmdline.o cbmdos.o cbmimage.o color.o crc32.o datasette.o debug.o dma.o embedded.o event.o findpath.o fliplist.o gcr.o info.o init.o initcmdline.o interrupt.o ioutil.o joystick.o kbdbuf.o keyboard.o lib.o libm_math.o lightpen.o log.o machine-bus.o machine.o main.o network.o opencbmlib.o palette.o ram.o rawfile.o rawnet.o resources.o romset.o screenshot.o snapshot.o socket.o sound.o sysfile.o translate.o traps.o util.o vsync.o zfile.o zipcode.o maincpu.o mouse.o midi.o ../src/c64/libc64.a ../src/c64/cart/libc64cartsystem.a ../src/c64/cart/libc64cart.a ../src/c64/cart/libc64commoncart.a ../src/drive/iec/libdriveiec.a ../src/drive/iecieee/libdriveiecieee.a ../src/drive/iec/c64exp/libdriveiecc64exp.a ../src/drive/ieee/libdriveieee.a ../src/drive/libdrive.a ../src/lib/p64/libp64.a ../src/iecbus/libiecbus.a ../src/parallel/libparallel.a ../src/vdrive/libvdrive.a ../src/sid/libsid.a ../src/monitor/libmonitor.a ../src/sounddrv/libsounddrv.a ../src/gfxoutputdrv/libgfxoutputdrv.a ../src/printerdrv/libprinterdrv.a ../src/rs232drv/librs232drv.a ../src/diskimage/libdiskimage.a ../src/fsdevice/libfsdevice.a ../src/tape/libtape.a ../src/fileio/libfileio.a ../src/serial/libserial.a ../src/core/libcore.a ../src/vicii/libvicii.a ../src/raster/libraster.a ../src/userport/libuserport.a ../src/rtc/librtc.a ../src/video/libvideo.a ../src/arch/unix/libarch.a ../src/arch/unix/gui/libarchgui.a ../src/arch/unix/x11/gnome/libgnomeui.a ../src/arch/unix/x11/libx11ui.a   ../src/imagecontents/libimagecontents.a ../src/resid/libresid.a ../src/resid-fp/libresidfp.a ../src/platform/libplatform.a -lXrandr -lXxf86vm -lX11 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lglib-2.0     -lvte -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lpango-1.0 -lfreetype -lfontconfig -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lcairo -lX11       -lpulse-simple -lpulse -lasound -lavcodec -lavformat -lavutil -lswscale     -ljpeg -lgif -lpng  -lz -ldl   -lnsl  -lm
../src/gfxoutputdrv/libgfxoutputdrv.a(ffmpegdrv.o): In function `gfxoutput_init_ffmpeg':
/home/r ... e-emu/vice/src/gfxoutputdrv/ffmpegdrv.c:918: undefined reference to `avcodec_init'
collect2: error: ld returned 1 exit status