../libs/qanava/build/libqanava_can.a(canGraphItemView.o): In function `Layout':
../../../src/can/./../la/laLayout.h:62: undefined reference to `vtable for qan::la::Layout'
../libs/qanava/build/libqanava_can.a(canGraphItemView.o): In function `Random':
../../../src/can/./../la/laLayout.h:104: undefined reference to `vtable for qan::la::Random'
collect2: ld returned 1 exit status