[U-Boot] [PATCH] fdt: Enhance dts/Makefile to be all things to all men
Wolfgang Denk
wd at denx.de
Wed May 29 23:33:47 CEST 2013
Dear Stephen,
In message <51A634B5.5060309 at wwwdotorg.org> you wrote:
>
> > I think this is not a good way to address this issue. The GCC
> > documentation (section "System-specific Predefined Macros" [1])
> > desribes how this should be handled. The "correct" (TM) way to fix
> > this is by adding "-ansi" or any "-std" option that requests strict
> > conformance to the compiler/preprocessor command line.
> >
> > [1] http://gcc.gnu.org/onlinedocs/cpp/System_002dspecific-Predefined-Macros.html#System_002dspecific-Predefined-Macros
>
> -ansi at least was considered when the Linux kernel patches for dtc+cpp
> support were being developed, but it was rejected. While it possibly
Can you provide references? I'd like to understand why it was
rejected - it seems to be the "official" approach to the problem.
> does solve this specific issue fine, there were other more general
> problems; IIRC (and I might not) it completely changes the way macro
> expansion happens, which results in it being pretty useless. Hence, "-x
> assembler-with-cpp" was chosen over e.g. "-ansi".
Again, do you have any reference? "completely changes the way macro
expansion happens" sounds terribly dangerous, so it would be better to
know about that exactly...
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
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