Function HandleExtractCommand

Source/cmCMakePkgConfigCommand.cxx:704–796

    .Bind("SYSTEM_LIBRARY_DIRS"_s, &ExtractArguments::SystemLibraryDirs);

bool HandleExtractCommand(std::vector<std::string> const& args,
                          cmExecutionStatus& status)
{

  std::vector<std::string> unparsed;
  auto parsedArgs = ExtractParser.Parse(args, &unparsed);
  auto maybeEnv = HandleCommon(parsedArgs, status);

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

  auto maybePackage =
    ImportPackage(*parsedArgs.Package, parsedArgs.Version, imEnv, pcEnv);
  if (!maybePackage) {
    return !parsedArgs.Required;
  }
  auto& package = *maybePackage;

  if (parsedArgs.AllowSystemIncludes) {
    pcEnv.AllowSysCflags = *parsedArgs.AllowSystemIncludes;
  }

  if (parsedArgs.AllowSystemLibs) {
    pcEnv.AllowSysLibs = *parsedArgs.AllowSystemLibs;
  }

  if (parsedArgs.SystemIncludeDirs) {
    pcEnv.SysCflags = *parsedArgs.SystemIncludeDirs;
  }

  if (parsedArgs.SystemLibraryDirs) {
    pcEnv.SysLibs = *parsedArgs.SystemLibraryDirs;
  }

  auto& mf = status.GetMakefile();
  mf.AddDefinition("CMAKE_PKG_CONFIG_NAME", package.Name());
  mf.AddDefinition("CMAKE_PKG_CONFIG_DESCRIPTION", package.Description());
  mf.AddDefinition("CMAKE_PKG_CONFIG_VERSION", package.Version());

  auto make_list = [&](char const* def,
                       std::vector<cmPkgConfigDependency> const& deps) {
    std::vector<cm::string_view> vec;
    vec.reserve(deps.size());

    for (auto const& dep : deps) {
      vec.emplace_back(dep.Name);
    }

    mf.AddDefinition(def, cmList::to_string(vec));
  };

  make_list("CMAKE_PKG_CONFIG_CONFLICTS", package.Conflicts());
  make_list("CMAKE_PKG_CONFIG_PROVIDES", package.Provides());
  make_list("CMAKE_PKG_CONFIG_REQUIRES", package.Requires());
  make_list("CMAKE_PKG_CONFIG_REQUIRES_PRIVATE", package.Requires(true));