[PATCH] Add clang-format config to contrib folder

[Jeff Law]

On 11/18/2015 07:10 AM, Martin Liška wrote:
> Hello.
>
> Following patch adds a clang-format config file that should respect the GNU coding standards.
> As the file is not part of build process, I hope the patch can be applied even though
> we've just skipped to stage3? The patch adds a hunk to Makefile which can create symlink
> to the root directory of the GCC compiler. The clang-format automatically loads style from
> the configuration file.
>
> clang-format (version 3.8) provides rich variety of configuration options that can
> ensure the GNU coding style.
>
> Limitations:
> + placement of opening brace of an initializer can't be requested
> + sometimes, '(' is the trailing symbol at the end of a line, which can look weird
>
> As we've been continuously converting our source base to C++, the clang-format should
> provide better results than a collection of regular expressions (check_GNU_style.sh).
>
> As a reference file I attach gcc/tree-ssa-uninit.c file.
> Feel free to comment the suggested configuration file.
This is fine.  Given that gnu-indent seems to muck up C++ badly in my 
experience, clang-format may be a better long term solution.  I'd really 
like to get to a point one day where formatting is a commit hook so that 
things are always kept properly formatted.

jeff