Re: [Qemu-devel] [RFC PATCH 01/14] pc-bios/s390-ccw: Add the libc from the SLOF firmware

[Thomas Huth]

On 27.06.2017 17:32, David Hildenbrand wrote:
> On 27.06.2017 13:48, Thomas Huth wrote:
>> To be able to use some more advanced libc functions in the s390-ccw
>> firmware, like printf() and malloc(), we need a better libc here.
>> This patch adds the C library from the SLOF firmware (taken from
>> the SLOF commit ID 62674aabe20612a9786fa03e87cf6916ba97a99a). The
>> files are copied without modifications here and will be adapted for
>> the s390-ccw firmware by the next patch. I just removed the getopt()
>> and scanf()-like functions from the libc since we likely do not need
>> them in the s390-ccw firmware.
>>
> 
> We have SLOF as a git submodule in roms/SLOF.
> 
> I wonder if there would a way to avoid duplicating files.
> 
> E.g. build s390x-ccw.img only if roms/SLOF is checked out and link/copy
> the right folder.
> 
> Then, also the question regarding coding style is gone.
> 
> Would something like that work?

Cool idea, I like it at a first glance. It might be possible ... but
that also creates a lot of dependencies, e.g. each time there is a
related change in the SLOF repository, you run into the problem that it
might affect the s390-ccw firmware, too. Not sure whether we really
always want to deal with that situation...

 Thomas