Method GetClassifiedFlagsForSource

Source/cmGeneratorTarget.cxx:2142–2437

}

cmGeneratorTarget::ClassifiedFlags
cmGeneratorTarget::GetClassifiedFlagsForSource(cmSourceFile const* sf,
                                               std::string const& config)
{
  auto& sourceFlagsCache = this->Configs[config].SourceFlags;
  auto cacheEntry = sourceFlagsCache.lower_bound(sf);
  if (cacheEntry != sourceFlagsCache.end() && cacheEntry->first == sf) {
    return cacheEntry->second;
  }

  ClassifiedFlags flags;
  std::string const& lang = sf->GetLanguage();

  if (!IsSupportedClassifiedFlagsLanguage(lang)) {
    return flags;
  }

  auto* const lg = this->GetLocalGenerator();
  auto const* const mf = this->Makefile;

  // Compute the compiler launcher flags.
  if (CanUseCompilerLauncher(lang)) {
    // Compiler launchers are all execution flags and should not be relevant to
    // the actual compilation.
    FlagClassification cls = FlagClassification::ExecutionFlag;
    FlagKind kind = FlagKind::NotAFlag;

    std::string const clauncher_prop = cmStrCat(lang, "_COMPILER_LAUNCHER");
    cmValue clauncher = this->GetProperty(clauncher_prop);
    std::string const evaluatedClauncher = cmGeneratorExpression::Evaluate(
      *clauncher, lg, config, this, nullptr, this, lang);

    for (auto const& flag : SplitFlags(evaluatedClauncher)) {
      flags.emplace_back(cls, kind, flag);
    }
  }

  ClassifiedFlags define_flags;
  ClassifiedFlags include_flags;
  ClassifiedFlags compile_flags;

  SourceVariables sfVars = this->GetSourceVariables(sf, config);

  // Compute language flags.
  {
    FlagClassification cls = FlagClassification::BaselineFlag;
    FlagKind kind = FlagKind::Compile;

    std::string mfFlags;
    // Explicitly add the explicit language flag before any other flag
    // so user flags can override it.
    this->AddExplicitLanguageFlags(mfFlags, *sf);

    for (auto const& flag : SplitFlags(mfFlags)) {
      flags.emplace_back(cls, kind, flag);
    }
  }