2017-01-27 14:45, De Lara Guarch, Pablo:
> From: Olivier Matz [mailto:[email protected]]
> >
> > When we compile the dpdk with:
> > CONFIG_RTE_LIBRTE_EFD=y
> > CONFIG_RTE_LIBRTE_NFP_PMD=n
> > CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD=n
> > CONFIG_RTE_LIBRTE_SCHED=n
> > CONFIG_RTE_LIBRTE_METER=n
> >
> > The linker gives the following error:
> > lib/librte_efd.a(rte_efd.o): In function `rte_efd_create':
> > lib/librte_efd/rte_efd.c:560: undefined reference to `log2'
> > collect2: error: ld returned 1 exit status
> >
> > This is because the '-lm' is missing in mk/rte.app.mk.
> >
> > An alternative, which is proposed by this patch, is to use the compiler
> > builtin rte_bsf32() to process log2 instead of the libmath log2() that
> > requires to include math.h and link with -lm.
> >
> > Signed-off-by: Olivier Matz <[email protected]>
>
> Acked-by: Pablo de Lara <[email protected]>
>
> Nice catch, thanks!
Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
Applied, thanks
