Found the following significant warnings:
  ComputeGD.cpp:691:15: warning: 'evalIneq' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:699:15: warning: 'evalFit' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:740:21: warning: 'getDiag' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:785:15: warning: 'evalEq' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:794:15: warning: 'evalFit' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:826:21: warning: 'getDiag' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:868:15: warning: 'evalIneq' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:876:15: warning: 'evalFit' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:913:21: warning: 'getDiag' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:964:15: warning: 'evalIneq' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:972:15: warning: 'evalFit' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeGD.cpp:1009:21: warning: 'getDiag' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:249:15: warning: 'isConverged' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:254:17: warning: 'getFit' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:255:15: warning: 'resetDerivs' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:259:22: warning: 'paramIndexToName' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:265:15: warning: 'evaluateFit' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:268:15: warning: 'evaluateDerivs' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:277:18: warning: 'getGrad' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:278:15: warning: 'setSearchDir' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:281:15: warning: 'reportBadDeriv' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ComputeNR.cpp:284:15: warning: 'debugDeriv' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  omxData.cpp:2218:18: warning: 'getGrad' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  omxData.cpp:2219:22: warning: 'paramIndexToName' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  omxData.cpp:2220:17: warning: 'getFit' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  omxData.cpp:2221:15: warning: 'evaluateFit' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  omxData.cpp:2244:15: warning: 'evaluateDerivs' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  omxData.cpp:2269:15: warning: 'setSearchDir' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  omxRowFitFunction.cpp:43:15: warning: 'init' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  omxRowFitFunction.cpp:44:15: warning: 'compute' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
See ‘/Volumes/Builds/packages/high-sierra-x86_64/results/4.0/OpenMx.Rcheck/00install.out’ for details.