On Thu, May 2, 2019 at 11:33 AM Reshma Pattan <reshma.pat...@intel.com> wrote:
> gcc 9 on Fedora 30 gives an error > "taking address of packed member may result in an > unaligned pointer value" warnings. > > For clang builds this warning is already disabled, > so disable "-Waddress-of-packed-member" for gcc builds > also. > > Snippet of build error: > ...lib/librte_eal/linux/eal/eal_memalloc.c: In function ‘alloc_seg_walk’: > ...lib/librte_eal/linux/eal/eal_memalloc.c:768:12: error: taking address > of packed member of ‘struct rte_mem_config’ may result in an unaligned > pointer value [-Werror=address-of-packed-member] > 768 | cur_msl = &mcfg->memsegs[msl_idx]; > | ^~~~~~~~~~~~~~~~~~~~~~~ > > Signed-off-by: Reshma Pattan <reshma.pat...@intel.com> > --- > mk/toolchain/gcc/rte.vars.mk | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/mk/toolchain/gcc/rte.vars.mk b/mk/toolchain/gcc/rte.vars.mk > index d8b99faf6..b852fcfd7 100644 > --- a/mk/toolchain/gcc/rte.vars.mk > +++ b/mk/toolchain/gcc/rte.vars.mk > @@ -87,5 +87,8 @@ WERROR_FLAGS += -Wimplicit-fallthrough=2 > WERROR_FLAGS += -Wno-format-truncation > endif > > +# disable packed member unalign warnings > +WERROR_FLAGS += -Wno-address-of-packed-member > + > export CC AS AR LD OBJCOPY OBJDUMP STRIP READELF > export TOOLCHAIN_CFLAGS TOOLCHAIN_LDFLAGS TOOLCHAIN_ASFLAGS > -- > 2.21.0 > > Not the best approach to me... Let me install a fedora 30 and have a look. -- David Marchand
