Re: [ptxdist] Failed to compile gdbserver

[Michael Olbrich <m.olbrich@pengutronix.de>]

On Sat, Sep 29, 2018 at 03:19:45PM +0200, Andreas Pretzsch wrote:
> On Mon, 2018-07-30 at 13:44 +0200, Michael Olbrich wrote:
> > On Mon, Jul 30, 2018 at 11:29:04AM +0000, Denis OSTERLAND wrote:
> > > I try to compile gdbserver with OSELAS.Toolchain-2018.02.0 on
> > > armv5te + armv7a, but it fails.
> > > I tried the default version 7.6.1:
> 
> Just hit me too, same setup.
> Well, with ptxdist-2018.09, but same topic.
> 
> 
> > You need to use the same version as the gdb in the toolchain. That's
> > 8.1, if I remember correctly.
> 
> Correct, there gdb 8.1 is used. Build is successful with
> PTXCONF_GDB_VERSION="8.1"
> PTXCONF_GDB_MD5="0c85ecbb43569ec43b1c9230622e84ab"
> 
> 
> Might be worth to check this, like it's done with gcc and glibc.
> Their versions are set in platformconfig (and checked), in this case:
> PTXCONF_CROSSCHAIN_CHECK="7.3.1"
> PTXCONF_GLIBC_VERSION="2.27"
> And so kind of centralizing toolchain version dependencies.
> 
> But gdb version (which gdbserver follows) is set in ptxconfig, as
> PTXCONF_GDB_VERSION and PTXCONF_GDB_MD5. Where it belongs to, as those
> are installed to the target. Either gdbserver or even full gdb.
> 
> Thinking of ways to improve this, I could imagine
> 
> 1.) keep PTXCONF_GDB_* in ptxconfig, but add some "use version from
> toolchain" config flag, which will in turn take the data setup in
> platformconfig (probably new options there)

I've implemented something like this:
For an OSELAS.Toolchain it will now fetch the version and md5 from the
toolchain ptxconfig. The md5 can be overwritten if necessary.
For all other toolchains <prefix>-gdb --version is parsed and the md5 must
be specified.
This is all optional, the old way to specify version and md5 can be used
too.

Michael

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