Method ClearDependencies

Source/cmLocalUnixMakefileGenerator3.cxx:1890–1945

}

void cmLocalUnixMakefileGenerator3::ClearDependencies(cmMakefile* mf,
                                                      bool verbose)
{
  // Get the list of target files to check
  cmValue infoDef = mf->GetDefinition("CMAKE_DEPEND_INFO_FILES");
  if (!infoDef) {
    return;
  }
  cmList files{ *infoDef };

  // Each depend information file corresponds to a target.  Clear the
  // dependencies for that target.
  cmDepends clearer;
  clearer.SetVerbose(verbose);
  for (std::string const& file : files) {
    auto snapshot = mf->GetState()->CreateBaseSnapshot();
    cmMakefile lmf(mf->GetGlobalGenerator(), snapshot);
    lmf.ReadListFile(file);

    if (!lmf.GetSafeDefinition("CMAKE_DEPENDS_LANGUAGES").empty()) {
      std::string dir = cmSystemTools::GetFilenamePath(file);

      // Clear the implicit dependency makefile.
      std::string dependFile = dir + "/depend.make";
      clearer.Clear(dependFile);

      // Remove the internal dependency check file to force
      // regeneration.
      std::string internalDependFile = dir + "/depend.internal";
      cmSystemTools::RemoveFile(internalDependFile);
    }

    auto depsFiles = lmf.GetSafeDefinition("CMAKE_DEPENDS_DEPENDENCY_FILES");
    if (!depsFiles.empty()) {
      auto dir = cmCMakePath(file).GetParentPath();
      // Clear the implicit dependency makefile.
      auto depFile = cmCMakePath(dir).Append("compiler_depend.make");
      clearer.Clear(depFile.GenericString());

      // Remove the internal dependency check file
      auto internalDepFile =
        cmCMakePath(dir).Append("compiler_depend.internal");
      cmSystemTools::RemoveFile(internalDepFile.GenericString());

      // Touch timestamp file to force dependencies regeneration
      auto DepTimestamp = cmCMakePath(dir).Append("compiler_depend.ts");
      cmSystemTools::Touch(DepTimestamp.GenericString(), true);

      // clear the dependencies files generated by the compiler
      cmList dependencies{ depsFiles, cmList::EmptyElements::Yes };
      cmDependsCompiler depsManager;
      depsManager.SetVerbose(verbose);
      depsManager.ClearDependencies(dependencies);
    }
  }
}

void cmLocalUnixMakefileGenerator3::WriteDependLanguageInfo(