Here is an example of simplified files_Incompressible to speed up the DAFoam repo compilation speed, assuming we want to test a new change for DASimpleFoam with the SA turbulence model and force objective.
DAUtility/DAUtility.C DACheckMesh/DACheckMesh.C DACheckMesh/checkGeometry.C DACheckMesh/checkTools.C DAOption/DAOption.C DARegDb/DARegDbSinglePhaseTransportModel.C DARegDb/DARegDbTurbulenceModelIncompressible.C DAModel/DATurbulenceModel/DATurbulenceModel.C DAModel/DATurbulenceModel/DASpalartAllmaras.C DAModel/DARadiationModel/DARadiationModel.C DAModel/DARadiationModel/DAP1.C DAModel/DAModel.C DAStateInfo/DAStateInfo.C DAStateInfo/DAStateInfoSimpleFoam.C DAMotion/DAMotion.C DAMotion/DAMotionDummy.C DAIndex/DAIndex.C DAField/DAField.C DAObjFunc/DAObjFunc.C DAObjFunc/DAObjFuncForce.C DAFvSource/DAFvSource.C DAFvSource/DAFvSourceActuatorDisk.C DAResidual/DAResidual.C DAResidual/DAResidualDummy.C DAResidual/DAResidualSimpleFoam.C DAColoring/DAColoring.C DAJacCon/DAJacCon.C DAJacCon/DAJacCondRdW.C DAJacCon/DAJacCondFdW.C DAJacCon/DAJacConDummy.C DAPartDeriv/DAPartDeriv.C DAPartDeriv/DAPartDerivdRdW.C DAPartDeriv/DAPartDerivdFdW.C DALinearEqn/DALinearEqn.C DASolver/DASolver.C DASolver/DASimpleFoam/DASimpleFoam.C models/dummyTurbulenceModel/makeDummyTurbulenceModelIncompressible.C models/meshWaveFrozen/meshWaveFrozenPatchDistMethod.C models/MRFDF/MRFZoneDF.C models/MRFDF/MRFZoneListDF.C models/MRFDF/IOMRFZoneListDF.C LIB = $(DAFOAM_ROOT_PATH)/OpenFOAM/sharedLibs/libDAFoamIncompressible$(DF_LIB_SUFFIX)