Commit Graph

5 Commits

Author SHA1 Message Date
Richard Smith e69bdd10ea [modules] Allow the error on importing a C++ module within an extern "C"
context (but otherwise at the top level) to be disabled, to support use of C++
standard library implementations that (legitimately) mark their <blah.h>
headers as being C++ headers from C libraries that wrap things in 'extern "C"'
a bit too enthusiastically.

llvm-svn: 250137
2015-10-13 00:39:40 +00:00
Serge Pavlov c4e04a2964 [Modules] More descriptive diagnostics for misplaced import directive
If an import directive was put into wrong context, the error message was obscure,
complaining on misbalanced braces. To get more descriptive messages, annotation
tokens related to modules are processed where they must not be seen.

Differential Revision: http://reviews.llvm.org/D11844

llvm-svn: 248085
2015-09-19 05:32:57 +00:00
Richard Smith 47972afd10 [modules] Simplify -cc1 interface for enabling implicit module maps.
We used to have a flag to enable module maps, and two more flags to enable
implicit module maps. This is all redundant; we don't need any flag for
enabling module maps in the abstract, and we don't usually have -fno- flags for
-cc1. We now have just a single flag, -fimplicit-module-maps, that enables
implicitly searching the file system for module map files and loading them.

The driver interface is unchanged for now. We should probably rename
-fmodule-maps to -fimplicit-module-maps at some point.

llvm-svn: 239789
2015-06-16 00:08:24 +00:00
Richard Smith 9bca298f6d Module [extern_c] attribute: inherit to submodules, don't write 'extern "C"'
blocks when building in C mode, and serialize and deserialize the attribute.

llvm-svn: 203317
2014-03-08 00:03:56 +00:00
Richard Smith 7794486846 Add [extern_c] attribute for modules, allowing a C module to be imported within an extern "C" block in C++ code.
llvm-svn: 202615
2014-03-02 05:58:18 +00:00