Linker errors building in release mode #20
Description
E.g.,
`_ZNSt17_Function_handlerIFN7lightdb16shared_referenceINS0_7runtime7RuntimeIJEEENS0_12DefaultMixinEEEvEZNS2_L4makeINS0_8physical9CPUDecode7RuntimeESA_JEvEEDaRT0_DpOT1_EUlvE_E9_M_invokeERKSt9_Any_data' referenced in section `.rodata.cst8' of CMakeFiles/lightdb_test.dir/src/planning/VisitorTests.cc.o: defined in discarded section `.text._ZNSt17_Function_handlerIFN7lightdb16shared_referenceINS0_7runtime7RuntimeIJEEENS0_12DefaultMixinEEEvEZNS2_L4makeINS0_8physical9CPUDecode7RuntimeESA_JEvEEDaRT0_DpOT1_EUlvE_E9_M_invokeERKSt9_Any_data[_ZN7lightdb12optimization14ChooseDecoders5visitERKNS_7logical17ScannedLightFieldE]' of CMakeFiles/lightdb_test.dir/src/planning/VisitorTests.cc.o