Implement support for module requirements, which indicate the language

features needed for a particular module to be available. This allows
mixed-language modules, where certain headers only work under some
language variants (e.g., in C++, std.tuple might only be available in
C++11 mode).

llvm-svn: 147387

2 files changed, 10 insertions, 0 deletions

diff --git a/clang/test/Modules/Inputs/DependsOnModule.framework/Headers/cxx_other.h b/clang/test/Modules/Inputs/DependsOnModule.framework/Headers/cxx_other.h
new file mode 100644
index 00000000000..724d7987af5
--- /dev/null
+++ b/clang/test/Modules/Inputs/DependsOnModule.framework/Headers/cxx_other.h
@@ -0,0 +1,5 @@
+class CXXOnly {
+ public:
+  CXXOnly();
+  ~CXXOnly();
+};
diff --git a/clang/test/Modules/Inputs/DependsOnModule.framework/module.map b/clang/test/Modules/Inputs/DependsOnModule.framework/module.map
index d8fe2fc3f52..2a3dd8038bd 100644
--- a/clang/test/Modules/Inputs/DependsOnModule.framework/module.map
+++ b/clang/test/Modules/Inputs/DependsOnModule.framework/module.map
@@ -4,6 +4,11 @@ framework module DependsOnModule {
   module * {
     export *
   }
+  explicit module CXX {
+    requires cplusplus
+    header "cxx_other.h"
+  }
+
   explicit framework module SubFramework {
     umbrella header "SubFramework.h"