/// treat this as the CurrentModule.
std::string ImplementationOfModule;
+ /// \brief The names of any features to enable in module 'requires' decls
+ /// in addition to the hard-coded list in Module.cpp and the target features.
+ std::vector<std::string> ModuleFeatures;
+
/// \brief Options for parsing comments.
CommentOptions CommentOpts;
def fmodule_map_file_home_is_cwd : Flag<["-"], "fmodule-map-file-home-is-cwd">,
HelpText<"Use the current working directory as the home directory of "
"module maps specified by -fmodule-map-file=<FILE>">;
+def fmodule_feature : Separate<["-"], "fmodule-feature">,
+ MetaVarName<"<feature>">,
+ HelpText<"Enable <feature> in module map requires declarations">;
let Group = Action_Group in {
/// language options has the given feature.
static bool hasFeature(StringRef Feature, const LangOptions &LangOpts,
const TargetInfo &Target) {
- return llvm::StringSwitch<bool>(Feature)
- .Case("altivec", LangOpts.AltiVec)
- .Case("blocks", LangOpts.Blocks)
- .Case("cplusplus", LangOpts.CPlusPlus)
- .Case("cplusplus11", LangOpts.CPlusPlus11)
- .Case("objc", LangOpts.ObjC1)
- .Case("objc_arc", LangOpts.ObjCAutoRefCount)
- .Case("opencl", LangOpts.OpenCL)
- .Case("tls", Target.isTLSSupported())
- .Default(Target.hasFeature(Feature));
+ bool HasFeature = llvm::StringSwitch<bool>(Feature)
+ .Case("altivec", LangOpts.AltiVec)
+ .Case("blocks", LangOpts.Blocks)
+ .Case("cplusplus", LangOpts.CPlusPlus)
+ .Case("cplusplus11", LangOpts.CPlusPlus11)
+ .Case("objc", LangOpts.ObjC1)
+ .Case("objc_arc", LangOpts.ObjCAutoRefCount)
+ .Case("opencl", LangOpts.OpenCL)
+ .Case("tls", Target.isTLSSupported())
+ .Default(Target.hasFeature(Feature));
+ if (!HasFeature)
+ HasFeature = std::find(LangOpts.ModuleFeatures.begin(),
+ LangOpts.ModuleFeatures.end(),
+ Feature) != LangOpts.ModuleFeatures.end();
+ return HasFeature;
}
bool Module::isAvailable(const LangOptions &LangOpts, const TargetInfo &Target,
Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
Opts.ImplementationOfModule =
Args.getLastArgValue(OPT_fmodule_implementation_of);
+ Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
Opts.NativeHalfType = Opts.NativeHalfType;
Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns);
Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
// RUN: rm -rf %t
-// RUN: %clang_cc1 -Wauto-import -fmodules-cache-path=%t -fmodules -F %S/Inputs %s -verify
+// RUN: %clang_cc1 -Wauto-import -fmodules-cache-path=%t -fmodules -F %S/Inputs %s -verify -fmodule-feature custom_req1
@import DependsOnModule.CXX; // expected-error{{module 'DependsOnModule.CXX' requires feature 'cplusplus'}}
@import DependsOnModule.NotCXX;
@import DependsOnModule.NotObjC; // expected-error{{module 'DependsOnModule.NotObjC' is incompatible with feature 'objc'}}
+@import DependsOnModule.CustomReq1; // OK
+@import DependsOnModule.CustomReq2; // expected-error{{module 'DependsOnModule.CustomReq2' requires feature 'custom_req2'}}