[cfe-dev] can i dissalow fallback to CL and force only C++03 standard?

Reid Kleckner rnk at google.com
Mon May 11 15:45:13 PDT 2015

I don't think that's very well supported currently. Clang on Windows
activates a bunch of switches by default, and we don't currently support
turning them off:

- -std=c++11: This could easily be overridden if we make -std=c++03 work
from the clang-cl command line. You can get this today by adding "-Xclang
-std=c++03" to bypass clang-cl.

- -fms-extensions: This controls __declspec and other types of conforming
extensions. These are typically necessary to parse the Visual C++ STL. You
probably can't turn this off.

- -fms-compatibility: This controls weird C++ corner cases that are
typically not encountered by the STL. If your code is portable and only
uses the STL, then you might be able to turn this off.

- -fdelayed-template-parsing: Similar to -fms-compatibility, this is needed
for ATL and other system headers that you might not use.

Anyway, different combinations here are not well tested yet.

On Sat, May 9, 2015 at 5:33 AM, Dennis Luehring <dl.soluz at gmx.net> wrote:

> im using the Clang VS2010-Plugin for the first time and its absolutely
> amazing
> im using Clang for pre-port a Windows app to Linux by removing
> unwanted/hidden
> use of microsoft extensions and check for C++03 only standards in Code
> is it possible to archive that with the Clang-Plugin?
> dennis
> _______________________________________________
> cfe-dev mailing list
> cfe-dev at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-dev/attachments/20150511/73d5f36f/attachment.html>

More information about the cfe-dev mailing list