Created attachment 3273 
Proposed patch

Hi,

The file lib/screenshooter-capture.c uses XKeysymToKeycode(), which is a libx11 symbol, and XShapeGetRectangles(), which is a libxext symbol, without explicitely linking with them. This makes the build fail with stricter linkers such as gold.

I updated locally ./Makefile.in to add -lXext -lX11 to LIBS, and it builds fine here, so I think it's the only issue.

See attached patch for a cleaner fix (I'm not an autotools guru, so this can probably be improved). I didn't test it very carefully though. ;)

Thanks!