[U-Boot] [PATCH v2] Makefile: adopt --std=gnu11 for HOSTCFLAGS on Linux

[Tom Rini]

On Mon, May 14, 2018 at 03:22:06PM +0200, Philipp Tomsich wrote:

> Following the conversion of the SPDX license tags, a number of files
> compiled with -pedantic now generate warnings similar to the following
> for using C99-style '//' comments in ISO C90 code:
> 
>   tools/gen_eth_addr.c:1:1: warning: C++ style comments are not allowed in ISO C90
>    // SPDX-License-Identifier: GPL-2.0+
>    ^
> 
> The SPDX comment-style change means that these files have adopted C99,
> so need to change the language-standard to --std=gnu99 or --std=gnu11
> to let the compiler know this.
> 
> As we now require GCC 6 or newer for the cross-compiler, the project has
> implicitly moved the project to GNU11: let older GCC versions on various
> Linux distros know to treat our host tools as GNU11 as well.
> 
> References: commit 83d290c56fab ("SPDX: Convert all of our single license tags to Linux Kernel style")
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>

Reviewed-by: Tom Rini <trini at konsulko.com>

-- 
Tom
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