Function PopulatePCTarget

Source/cmCMakePkgConfigCommand.cxx:899–968

auto const PopulateParser = BIND_POPULATE(PopulateArguments);

std::pair<bool, bool> PopulatePCTarget(PopulateArguments& args,
                                       cmExecutionStatus& status)
{

  std::string prefix = args.Prefix ? cmStrCat(*args.Prefix, "_"_s) : "";

  auto& mf = status.GetMakefile();
  auto maybeEnv = HandleCommon(args, status);

  if (!maybeEnv) {
    return { !args.Required, false };
  }
  auto& pcEnv = maybeEnv->first;
  auto& imEnv = maybeEnv->second;

  pcEnv.AllowSysCflags = true;
  pcEnv.AllowSysLibs = true;

  pkgProviders providers;
  if (args.Providers) {
    for (auto const& provider_str : *args.Providers) {
      auto assignment = provider_str.find('=');
      if (assignment != std::string::npos) {
        providers.emplace(provider_str.substr(0, assignment),
                          provider_str.substr(assignment + 1));
      } else {
        imEnv.status.SetError(cmStrCat(
          "No '=' found in BIND_PC_REQUIRES argument '", provider_str, '\''));
        cmSystemTools::SetFatalErrorOccurred();
        return { false, false };
      }
    }
  }

  pkgStack inStack;
  std::unordered_map<std::string, cmPkgConfigResult> outStack;

  auto maybePackage = ImportPackage(*args.Package, args.Version, imEnv, pcEnv);
  if (!maybePackage) {
    return { !args.Required, false };
  }
  imEnv.exact = false;

  if (!CheckPackageDependencies(*args.Package, prefix, *maybePackage, inStack,
                                outStack, providers, imEnv)) {
    return { !args.Required, false };
  }
  outStack[*args.Package] = std::move(*maybePackage);

  while (!inStack.empty()) {
    auto name = inStack.begin()->first;
    auto reqs = inStack.begin()->second;
    maybePackage = ImportPackage(name, reqs, imEnv, pcEnv);
    if (!maybePackage) {
      return { !args.Required, false };
    }
    if (!CheckPackageDependencies(name, prefix, *maybePackage, inStack,
                                  outStack, providers, imEnv)) {