Implement parsing, AST, (de-)serialization, and placeholder global

metadata for linking against the libraries/frameworks for imported
modules.

The module map language is extended with a new "link" directive that
specifies what library or framework to link against when a module is
imported, e.g.,

  link "clangAST"

or

  link framework "MyFramework"

Importing the corresponding module (or any of its submodules) will
eventually link against the named library/framework.

For now, I've added some placeholder global metadata that encodes the
imported libraries/frameworks, so that we can test that this
information gets through to the IR. The format of the data is still
under discussion.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172437 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 1 deletions

diff --git a/include/clang/Serialization/ASTBitCodes.h b/include/clang/Serialization/ASTBitCodes.h
index 2dbe136e89..a938697263 100644
--- a/include/clang/Serialization/ASTBitCodes.h
+++ b/include/clang/Serialization/ASTBitCodes.h
@@ -603,7 +603,9 @@ namespace clang {
       SUBMODULE_REQUIRES = 8,
       /// \brief Specifies a header that has been explicitly excluded
       /// from this submodule.
-      SUBMODULE_EXCLUDED_HEADER = 9
+      SUBMODULE_EXCLUDED_HEADER = 9,
+      /// \brief Specifies a library or framework to link against.
+      SUBMODULE_LINK_LIBRARY = 10
     };
 
     /// \brief Record types used within a comments block.