Netmap Library not getting installed on custom kernel installation

[Vincenzo Maffione]

Hi Rajesh,
  The libnetmap library is part of the userland utilities, whereas netmap
itself is a kernel subsystem.
This means that when you enable "device netmap", and you run "make
buildkernel", you get a kernel with netmap included. Also the low level
kernel headers are installed (e.g. /usr/include/net/netmap.h).

On the other hand, libnetmap gets installed (libnetmap.h + libnetmap.so +
libnetmap.a + ...) when you run "make buildworld" and "make installworld",
because that's a userland component.

On a side note, the netmap tools (pkt-gen, bridge, lb, etc.) should really
be a port. Another TODO item.

Regards,
  Vincenzo

Il giorno mer 16 dic 2020 alle ore 14:42 Rajesh Kumar <rajfbsd at gmail.com>
ha scritto:

> Hi,
>
> Got around this issue by manually copying necessary in /usr/obj
>
> Looks like libnetmap (src/lib/libnetmap) is not built and installed by
> default. Manually built them and copied the "libnetmap.h" and
> "libnetmap.so" (not just the header file) to appropriate directories in
> /usr/obj helps to get past the issue.  But not sure why libnetmap is not
> built and installed though "device netmap" is set in the config file.
>
> Manually copying may not be the right approach. Can anyone suggest a
> cleaner way of getting things done?
>
> Thanks,
> Rajesh.
>
> On Wed, Dec 16, 2020 at 3:33 PM Rajesh Kumar <rajfbsd at gmail.com> wrote:
>
> > Hi,
> >
> > I am trying to compile the netmap tools(pkt-gen, bridge etc.,) and
> getting
> > the below error.
> >
> >
> >
> >
> >
> > */root//freebsd/tools/tools/netmap/pkt-gen.c:47:10: fatal error:
> > 'libnetmap.h' file not found#include <libnetmap.h>         ^~~~~~~~~~~~~1
> > error generated.*** Error code 1*
> >
> > On debug, I don't see the libnetmap.h file getting installed in the
> > /usr/obj/ directory.  Whereas, in another similar machine I have the file
> > in /usr/obj and compilation of netmap tools goes fine.  For the test, I
> > just copied libnetmap.h from the source and it leads to linker error. So
> > seems the libnetmap library is not installed properly.
> >
> > I installed a custom kernel just disabling the debug options with the
> > FreeBSD-CURRENT branch.  After rebooting to the custom kernel, I tried to
> > compile the netmap tools (with some changes) and ran into the above
> error.
> >
> > How to get the netmap tools compiled in this scenario? Am i missing
> > something?
> >
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