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Date: Thu, 1 Mar 2018 22:12:26 +0100
From: EJ <koffieyahoo@...il.com>
To: musl@...ts.openwall.com
Subject: Re: Generating headers for a specific target
Hi Rich,
> On 1 Mar 2018, at 21:59, Rich Felker <dalias@...c.org> wrote:
>
> On Thu, Mar 01, 2018 at 09:49:42PM +0100, EJ wrote:
>> Hello,
>>
>> Is there a way to generate the headers for a specific target without
>> having access to the target or a cross-compiler for the target?
>>
>> I’m not interested in compiling must, just in a complete set of header files.
>
> Yes, with a few caveats. Keep in mind that for archs with subarchs,
> there will be preprocessor conditionals in the bits headers which
> depend on predefined macros from the compiler, so you can't
> use/process the headers without knowing the values of those macros.
Understood. I’m still planning to run the headers through a properly
configured compiler fornt-end, so that shouldn’t be a problem.
> With that said, something like this should work from a clean tree:
>
> make includedir=/where/you/want/them ARCH=whatever install-headers
>
> or out-of-tree in a clean dir:
>
> make -f /path/to/musl/Makefile srcdir=/path/to/musl \
> includedir=/where/you/want/them ARCH=whatever install-headers
>
> filling in ARCH=whatever with the musl name for the target arch (not
> including the subarch part).
The above works like a charm.
> The above make invocations are not entirely documented/public
> interfaces, but are probably 90% so and unlikely to change/break in
> practice. It might be a good idea to check that they still work with
> new versions when upgrading musl though.
Understandable.
Thanks for your quick and informative response!
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