Re: [RFC] add regenerate Makefile target

[Christophe Lyon <christophe.lyon@linaro.org>]

On Tue, 26 Mar 2024 at 16:42, Jens Remus <jremus@linux.ibm.com> wrote:
>
> Am 15.03.2024 um 09:50 schrieb Christophe Lyon:
> > On Thu, 14 Mar 2024 at 19:10, Simon Marchi <simark@simark.ca> wrote:
> >> On 2024-03-13 04:02, Christophe Lyon via Gdb wrote:
> ...
> >> There's just the issue of files that are generated using tools that are
> >> compiled.  When experimenting with maintainer mode the other day, I
> >> stumbled on the opcodes/i386-gen, for instance.  I don't have a good
> >> solution to that, except to rewrite these tools in a scripting language
> >> like Python.
> >
> > So for opcodes, it currently means rewriting such programs for i386,
> > aarch64, ia64 and luckily msp430/rl78/rx share the same opc2c
> > generator.
> > Not sure how to find volunteers?
>
> Why are those generated source files checked into the repository and not
> generated at build-time? Would there be a reason for s390 do so as well
> (opcodes/s390-opc.tab is generated at build-time from
> opcodes/s390-opc.txt using s390-mkopc built from opcodes/s390-mkopc.c)?
>
I remember someone mentioned a requirement of being able to rebuild
with the sources on a read-only filesystem.
I don't know if there's a requirement that such generated files should
be part of the source tree though. Is opcodes/s390-opc.tab in builddir
or in srcdir?

I think there are other motivations but I can't remember them at the moment :-)

Thanks,

Christophe

> Thanks and regards,
> Jens
> --
> Jens Remus
> Linux on Z Development (D3303) and z/VSE Support
> +49-7031-16-1128 Office
> jremus@de.ibm.com
>
> IBM
>
> IBM Deutschland Research & Development GmbH; Vorsitzender des
> Aufsichtsrats: Wolfgang Wendt; Geschäftsführung: David Faller; Sitz der
> Gesellschaft: Böblingen; Registergericht: Amtsgericht Stuttgart, HRB 243294
> IBM Data Privacy Statement: https://www.ibm.com/privacy/