[PATCH 1 of 2] setup: enable pedantic warning of gcc to catch MSVC compatibility issue

[Matt Mackall]

On Fri, 2013-04-19 at 01:39 +0900, Yuya Nishihara wrote:
> # HG changeset patch
> # User Yuya Nishihara <yuya at tcha.org>
> # Date 1366302847 -32400
> #      Fri Apr 19 01:34:07 2013 +0900
> # Node ID d81cbdba4275b4bbba564993c2918378ea9d7388
> # Parent  7d31f2e42a8afb54c8fae87e8e3e29a63578aea4
> setup: enable pedantic warning of gcc to catch MSVC compatibility issue
> 
> MSVC is strict for the mixed declaration and code, which is invalid in C89.
> 
> CFLAGS has no effect except for Unix-like environment. But I'm a bit afraid
> this change might have a platform-specific issue. I've tested with gcc and
> clang (Linux amd64) and MSVC.

Pretty sure we've got some non-gcc-like Unix compilers out there, for
instance on AIX.

-- 
Mathematics is the supreme nostalgia of our time.