[dpdk-dev] Build KNI module failed

[Joakim Zhang]

Hi Juraj,

Thanks a lot for your kindly help :)

The reason why I failed to build KNI module from DPDK caused by the cross-compiler which Linux kernel used.

After I changed to use generic Linaro cross-compiler, instead of our internal ones, to build Linux kernel, then KNI module can pass build. It seems that our internal cross-compiler adds some compiler options.

Best Regards,
Joakim Zhang

> -----Original Message-----
> From: Juraj Linkeš <juraj.linkes at pantheon.tech>
> Sent: 2021年4月30日 21:54
> To: Joakim Zhang <qiangqing.zhang at nxp.com>; users at dpdk.org;
> dev at dpdk.org
> Subject: RE: Build KNI module failed
> 
> Maybe we actually need to step back a bit and talk about versions.
> 
> Which DPDK version are you using?
> Why are you using the old make build system instead of Meson?
> 
> Support for KNI cross-compilation was only added recently to Meson and I don't
> know enough about the old Make system to comment on that.
> 
> Juraj
> 
> > -----Original Message-----
> > From: Juraj Linkeš
> > Sent: Friday, April 30, 2021 2:18 PM
> > To: 'Joakim Zhang' <qiangqing.zhang at nxp.com>; users at dpdk.org;
> > dev at dpdk.org
> > Subject: RE: Build KNI module failed
> >
> > Hi Joakim,
> >
> > When I cross-compiled KNI I only used gcc that comes with Ubuntu, e.g.:
> > sudo apt install gcc-aarch64-linux-gnu libc6-dev-arm64-cross
> > pkg-config- aarch64-linux-gnu
> >
> > Which Ubuntu version are you using? The Ubuntu18.04 gcc works fine:
> > aarch64-linux-gnu-gcc -v
> > gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)
> >
> > This is a bit strange, since the versions are the same/similar.
> >
> > I am using this meson invocation:
> > meson kni-cross-gcc -Denable_kmods=true
> > -Dkernel_dir=/home/jlinkes/linux -- cross-file
> > config/arm/arm64_armv8_linux_gcc
> >
> > /home/jlinkes/linux is where I have my Linux git repo.
> >
> > Juraj
> >
> > > -----Original Message-----
> > > From: dev <dev-bounces at dpdk.org> On Behalf Of Joakim Zhang
> > > Sent: Tuesday, April 27, 2021 11:43 AM
> > > To: users at dpdk.org; dev at dpdk.org
> > > Subject: [dpdk-dev] Build KNI module failed
> > >
> > >
> > > Hi guys,
> > >
> > > Is there anyone met gcc build error when build KNI module on Ubuntu
> > > to cross build ARM64?
> > > I tried both gcc-linaro-6.5.0-2018.12-x86_64_aarch64-linux-gnu and
> > > gcc-linaro- 7.5.0-2019.12-x86_64_aarch64-linux-gnu.
> > >
> > > The error log as below, any comments would be appreciated! Thanks a lot!
> > > == Build kernel/linux/kni
> > >   CC [M]  /home/zqq/dpdk/arm64-dpaa-linuxapp-
> > > gcc/build/kernel/linux/kni/kni_misc.o
> > > aarch64-linux-gnu-gcc: error: unrecognized command line option
> > > '-mstack- protector-guard=sysreg'; did you mean '-fstack-protector-strong'?
> > > aarch64-linux-gnu-gcc: error: unrecognized command line option
> > > '-mstack- protector-guard-reg=sp_el0'; did you mean '-fstack-protector-all'?
> > > aarch64-linux-gnu-gcc: error: unrecognized command line option
> > > '-mstack- protector-guard-offset=1096'; did you mean
> > > '-fstack-protector-
> > strong'?
> > > scripts/Makefile.build:279: recipe for target
> > > '/home/zqq/dpdk/arm64-dpaa-
> > > linuxapp-gcc/build/kernel/linux/kni/kni_misc.o' failed
> > >
> > > I search the source code, have not found these gcc command line options.
> > >
> > > Best Regards,
> > > Joakim Zhang
> > >
>