Linking program ==> 'blender.exe' H:\b\lib\libsrc0.a(mywindow.o):mywindow.c:(.text+0x48): undefined reference to `BLI_gsqueue_is_empty ' H:\b\lib\libsrc0.a(mywindow.o):mywindow.c:(.text+0x98): undefined reference to `BLI_gsqueue_pop' H:\b\lib\libsrc0.a(mywindow.o):mywindow.c:(.text+0x70a): undefined reference to `BLI_gsqueue_new' H:\b\lib\libsrc0.a(mywindow.o):mywindow.c:(.text+0x7c5): undefined reference to `BLI_gsqueue_free' H:\b\lib\libsrc0.a(mywindow.o):mywindow.c:(.text+0xc9): undefined reference to `BLI_gsqueue_push' collect2: ld returned 1 exit status scons: *** [H:\b\bin\blender.exe] Error 1 scons: building terminated because of errors.