[libbsd] How to install machine header files?

[Jan.Sommer at dlr.de]

@Sebastian: Do you have a suggestion how I could resolve this? I think you have the most experience with the libbsd build system.

Best regards,

    Jan

> -----Original Message-----
> From: devel <devel-bounces at rtems.org> On Behalf Of Jan.Sommer at dlr.de
> Sent: Thursday, April 1, 2021 11:59 AM
> To: chrisj at rtems.org; devel at rtems.org
> Subject: RE: [libbsd] How to install machine header files?
> 
> > -----Original Message-----
> > From: Chris Johns <chrisj at rtems.org>
> > Sent: Thursday, April 1, 2021 6:25 AM
> > To: Sommer, Jan <Jan.Sommer at dlr.de>; devel at rtems.org
> > Subject: Re: [libbsd] How to install machine header files?
> >
> > On 1/4/21 6:37 am, Jan.Sommer at dlr.de wrote:
> > > Hello,
> > >
> > > I stumbled upon some include path problems in libbsd while looking
> > > at
> > Chris' ptpd port and I am not sure what is the recommended way to solve
> it.
> > > It starts with "freebsd/sys/sys/bus.h" including "machine/_bus.h".
> > > Currently, this will be the one from within "rtemsbd" which will
> > > redirect to
> > "rtemsbsd/include/machine/bus.h" which is amd64 specific.
> > > For the pc686 BSP this will create a compile error for applications
> > > which
> > include "<sys/bus.h>".
> >
> > OK.
> >
> > > I tried to solve it by removing the "_bus.h" in rtemsbsd and
> > > installing the
> > correct one from "freebsd/sys/i386/include/machine/_bus.h", but I am
> > not sure how to tell waf to install the file.
> > > Is there a way to add a single architecture specific header to the
> > > install
> > headers?
> >
> > Yes ....
> >
> > https://git.rtems.org/rtems-libbsd/tree/libbsd.py#n111
> > https://git.rtems.org/rtems-libbsd/tree/libbsd.py#n2903
> >
> > > I could add a corresponding path and wildcard to the "header-paths"
> > > in
> > libbsd.py, but I am not sure if this is the right place.
> >
> > I think the PCI module is the place to handle this. I am sorry but I
> > cannot see the issue clear at the moment and I cannot invest time
> performing a build.
> >
> 
> Thank you for taking a look at it.
> The main problem is, that the header files added there are not copied to the
> prefix with "waf install".
> To me it looks like only the files matched with header-paths
> (https://git.rtems.org/rtems-libbsd/tree/libbsd.py#n123) are installed.
> I checked today with the pc686 and zedboard builds and the header files
> which end up in PREFIX/lib/include/machine are only the ones from within
> the rtemsbsd directory and none from the
> freebsd/sys/$ARCH/include/machine.
> 
> > The addCPUDependentFreeBSDHeaderFiles() on line 2931 of libbsd.py in
> > the PCI module looks a little suspect because there is no list of archs
> provided.
> > Could the issue be as simple as the list of archs is not there and the
> > list is empty?
> >
> 
> It looks like only some of the add* functions take an archs list.
> addCPUDependentFreeBSDHeaderFiles() only takes the header file list.
> I dug around in the waf_libbsd.py, but I couldn't figure out what happens to
> the header files added by this function.
> 
> Best regards,
> 
>     Jan
> 
> > Chris
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