Function IncludeByVariable

Source/cmProjectCommand.cxx:330–386

namespace {
bool IncludeByVariable(cmExecutionStatus& status, std::string const& variable)
{
  cmMakefile& mf = status.GetMakefile();
  cmValue include = mf.GetDefinition(variable);
  if (!include) {
    return true;
  }
  cmList includeFiles{ *include };

  bool failed = false;
  for (auto filePath : includeFiles) {
    // Any relative path without a .cmake extension is checked for valid cmake
    // modules. This logic should be consistent with CMake's include() command.
    // Otherwise default to checking relative path w.r.t. source directory
    if (!cmSystemTools::FileIsFullPath(filePath) &&
        !cmHasLiteralSuffix(filePath, ".cmake")) {
      std::string mfile = mf.GetModulesFile(cmStrCat(filePath, ".cmake"));
      if (mfile.empty()) {
        status.SetError(
          cmStrCat("could not find requested module:\n  ", filePath));
        failed = true;
        continue;
      }
      filePath = mfile;
    }
    std::string includeFile = cmSystemTools::CollapseFullPath(
      filePath, mf.GetCurrentSourceDirectory());
    if (!cmSystemTools::FileExists(includeFile)) {
      status.SetError(
        cmStrCat("could not find requested file:\n  ", filePath));
      failed = true;
      continue;
    }
    if (cmSystemTools::FileIsDirectory(includeFile)) {
      status.SetError(
        cmStrCat("requested file is a directory:\n  ", filePath));
      failed = true;
      continue;
    }

    bool const readit = mf.ReadDependentFile(filePath);
    if (readit) {
      // If the included file ran successfully, continue to the next file
      continue;
    }

    if (cmSystemTools::GetFatalErrorOccurred()) {
      failed = true;
      continue;
    }

    status.SetError(cmStrCat("could not load requested file:\n  ", filePath));
    failed = true;
  }
  // At this point all files were processed
  return !failed;
}