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Date: Tue, 21 Aug 2018 15:55:27 +0900 From: Masahiro Yamada <yamada.masahiro@...ionext.com> To: Joe Perches <joe@...ches.com> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Dave Hansen <dave.hansen@...el.com>, Mike Galbraith <efault@....de>, Guenter Roeck <linux@...ck-us.net>, Rik van Riel <riel@...riel.com>, Kees Cook <keescook@...omium.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Jonathan Corbet <corbet@....net>, "open list:DOCUMENTATION" <linux-doc@...r.kernel.org> Subject: Re: [PATCH] Raise the minimum required gcc version to 4.6 Hi. 2018-08-21 5:15 GMT+09:00 Joe Perches <joe@...ches.com>: > Various architectures fail to build properly with older versions > of the gcc compiler. > > An example from Guenter Roeck via this thread: > https://lore.kernel.org/lkml/20180814170904.GA12768@roeck-us.net/ > > ---------------------- > In file included from ./include/linux/mm.h:17:0, > from ./include/linux/pid_namespace.h:7, > from ./include/linux/ptrace.h:10, > from arch/openrisc/kernel/asm-offsets.c:32: > ./include/linux/mm_types.h:497:16: error: flexible array member in otherwise empty struct > > This is just an example with gcc 4.5.1 for or32. I have seen the problem > with gcc 4.4 (for unicore32) as well. > ---------------------- > > So update the minimum required version of gcc to 4.6. > > Miscellanea: > > o Update Documentation/process/changes.rst > o Remove and consolidate version test blocks in compiler-gcc.h > for versions lower than 4.6 > > Signed-off-by: Joe Perches <joe@...ches.com> > Reviewed-by: Kees Cook <keescook@...omium.org> > Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com> > --- This broke Clang build. I sent a patch. https://lore.kernel.org/patchwork/patch/976025/ -- Best Regards Masahiro Yamada
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