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Debug\NxBoxes.o: In function `Z16KeyboardCallbackhii':C:/Progging/Projects/yeahman/NxBoxes.cpp:161: undefined reference to `PerfRenderer::toggleEnable()'Debug\NxBoxes.o: In function `Z14RenderCallbackv':C:/Progging/Projects/yeahman/NxBoxes.cpp:280: undefined reference to `PerfRenderer::render(NxProfileData const*, int, int)'Debug\NxBoxes.o: In function `Z41__static_initialization_and_destruction_0ii':C:/Progging/Projects/yeahman/NxBoxes.cpp:26: undefined reference to `PerfRenderer::PerfRenderer()'collect2: ld returned 1 exit status