Re: [dpdk-users] SW Turbo Poll Mode Driver

["Ginés García Avilés" <gines.garcia@i2cat.net>]

Hi Nicolas,
thanks a lot for your reply.

I'm trying to build DPDK with ICC but I'm not sure why libstdc++ is not
accessible for meson. As a workaround, I'm
checking gcc in order to see whether the installation is correct or not (as
far as I know icc takes some info from gcc).

As an alternative, If I move to gcc as the compiler used by meson, I'm
getting the following error for each operation provided by FlexRAN:

  - "libldpc_encoder_5gnr.a(phy_ldpc_encoder_5gnr.cpp.o): relocation
R_X86_64_32S against `.rodata.str1.32' can not be used when making a shared
object; recompile with -fPIC"

I have checked the fPIC flag and it is already included when compiling the
turbo_sw driver.

  - Versions:
      > FlexRAN 19.04
      > DPDK 21.08
      > gcc Ubuntu 9.3.0
      > Ubuntu 20.04

Should I use gcc or icc for compiling dpdk? Any ideas about what could be
the issue in the previous environments?

Thanks a lot in advance,
Ginés.


El mar, 5 oct 2021 a las 22:57, Chautru, Nicolas (<nicolas.chautru@intel.com>)
escribió:

> Hi Gines,
>
> I don’t see such issue, you probably have to make sure libstdc++ is
> installed and accessible by meson.
>
>
>
> *From:* Ginés García Avilés <gines.garcia@i2cat.net>
> *Sent:* Tuesday, October 5, 2021 12:03 AM
> *To:* Chautru, Nicolas <nicolas.chautru@intel.com>
> *Cc:* Thomas Monjalon <thomas@monjalon.net>; users@dpdk.org
> *Subject:* Re: [dpdk-users] SW Turbo Poll Mode Driver
>
>
>
> Hi Nicolas,
>
> thanks a lot for your help.
>
>
>
> However, with the latest version of DPDK I'm still facing the following
> issue:
>
>   - "drivers/baseband/turbo_sw/meson.build:13:4: ERROR: C library
> 'libstdc++' not found"
>
>
>
> These are the steps I'm actually following for the whole process:
>
>   - Set env vars (*ICC *compiler, FLEXRAN_SDK, DIR_WIRELESS_SDK, ...)
>
>   - meson x86_64-native-linux-icc
>
>   - cd x86_64-native-linux-icc
>
>   - meson configure -Dflexran_sdk=xxx/build-avx512-icc/install
>
>   - ninja
>
>
>
> Thanks in advance,
>
> Ginés.
>
>
>
> El lun, 4 oct 2021 a las 23:05, Chautru, Nicolas (<
> nicolas.chautru@intel.com>) escribió:
>
> Hi Gines,
> The only thing is to make sure to set the meson option to point to the
> right location
> See https://doc.dpdk.org/guides/bbdevs/turbo_sw.html : for instance
> something like this "meson configure
> -Dflexran_sdk=xxx/build-avx512-icc/install"
> Then meson build framework will just link the libraries: see
> drivers\baseband\turbo_sw\meson.build which uses cc.find_library to
> dynamically find and link the libraries
>
> > -----Original Message-----
> > From: Thomas Monjalon <thomas@monjalon.net>
> > Sent: Wednesday, September 29, 2021 3:41 AM
> > To: Ginés García Avilés <gines.garcia@i2cat.net>
> > Cc: users@dpdk.org; Chautru, Nicolas <nicolas.chautru@intel.com>
> > Subject: Re: [dpdk-users] SW Turbo Poll Mode Driver
> >
> > +Cc maintainer
> >
> > 14/09/2021 12:58, Ginés García Avilés:
> > > Hi all,
> > > After following the steps listed here (3. SW Turbo Poll Mode Driver —
> > > Data Plane Development Kit 21.08.0 documentation (dpdk.org)
> > > <http://doc.dpdk.org/guides/bbdevs/turbo_sw.html#
> <http://doc.dpdk.org/guides/bbdevs/turbo_sw.html>>), using the
> > > specific versions of DPDK and FlexRAN, I'm facing an error while
> > > trying to run one of the bbdev
> > > tests:
> > >   - command:
> > >     > python2 test-bbdev.py
> > > -e="--vdev=baseband_turbo_sw,socket_id=0,max_nb_queues=8" -c
> > > validation -v turbo_dec_default.data
> > >   - Error:
> > >     > "Device 0 (baseband_turbo_sw) does not support specified
> > capabilities"
> > >
> > > which I think is due to an incorrect linkage of DPDK and FlexRAN. I
> > > have checked all the environmental variables pointing to the different
> > > components  and everything seems to be correct.
> > >
> > > Any suggestions about how to solve this problem?
> > >
> > > Thanks a lot for your help,
> > > Ginés.
> >
> >
>
>