linker-errors

I am trying to install the Google maps SDK and I am running through this error when running: Undefined symbols for architecture x86_64: "_CBAdvertisementDataManufacturerDataKey", referenced from: -[GMSx_PEBeaconScanner centralManager:didDiscoverPeripheral:advertisementData:RSSI:] in GoogleMaps(PEBeaconScanner.o) "_CBAdvertisementDataServiceDataKey", referenced from: -[GMSx_PEBeaconScanner centralManager:didDiscoverPeripheral:advertisementData:RSSI:] in GoogleMaps(PEBeaconScanner.o) "_CBCentralManagerScanOptionAllowDuplicatesKey", referenced from: -[GMSx_PEBeaconScanner scanIfAppropriate] in

The problem I faced has been solved here: Loading shared library in open-mpi/ mpi-run I know not how, setting LD_LIBRARY_PATH or specifying -x LD_LIBRARY_PATH fixes the problem, when my installation itself specifies the necessary -L arguments. My installation is in ~/mpi/ I have also included my compile-link configs. $ mpic++ -showme:version mpic++: Open MPI 1.6.3 (Language: C++) $ mpic++ -showme g++ -I/home/vigneshwaren/mpi/include -pthread -L/home/vigneshwaren/mpi/lib -lmpi_cxx -lmpi -ldl -lm -Wl,--export-dynamic -lrt -lnsl -lutil -lm -ldl $ mpic++ -showme:libdirs /home/vigneshwaren/mpi/lib

EDIT: I'm not going to do this, I now realize how dangerous this can be. But, the question stays for purely academic purposes. I'm trying to implement a category on NSCollectionView that will let me access the private variable _displayedItems. I need to be able to access it in my subclass. So, I've created the following category: @interface NSCollectionView (displayedItems) - (NSMutableArray *)displayedItems; @end @implementation NSCollectionView (displayedItems) - (NSMutableArray *)displayedItems { return _displayedItems; } @end ...which seems like it should work perfectly. However, when I

The basic Google search bigobj issue shows that a lot of people are experiencing the Fatal Error C1128 : " number of sections exceeded object file format limit : compile with /bigobj ". The error has more chance to occur if one heavily uses a library of C++ templates, like Boost libraries or CGAL libraries . That error is strange, because it gives the solution to itself: set the compiler flag /bigobj ! So here is my question: why is not that flag set by default? There must be a penalty of using that flag, otherwise it would be set by default. That penalty is not documented in MSDN. Does