2015-03-26 19:17, Pablo de Lara: > DPDK does not build on gcc 4.4, as it complains due to > strict-aliasing rules in virtual_pmd and link_bonding_mode4 tests, > with no errors in next gcc versions:
Do you mean it's not possible to fix it in the code? You are disabling some checks which may be relevant. > CC virtual_pmd.o > CC test_link_bonding_mode4.o > cc1: warnings being treated as errors > /root/dpdk/app/test/test_link_bonding_mode4.c: In function > ?test_mode4_expired?: > /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:645: error: > dereferencing pointer ?pkt.409? does break strict-aliasing rules > /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:729: error: > dereferencing pointer ?pkt.409? does break strict-aliasing rules > ... > cc1: warnings being treated as errors > /root/dpdk/app/test/virtual_pmd.c: In function ?virtual_ethdev_stats_reset?: > /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:645: error: > dereferencing pointer ?pkt.338? does break strict-aliasing rules > /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:729: error: > dereferencing pointer ?pkt.338? does break strict-aliasing rules > > This patch fixes the compilation by disabling > these warnings. > > Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com> > --- > app/test/Makefile | 5 +++++ > 1 files changed, 5 insertions(+), 0 deletions(-) > > diff --git a/app/test/Makefile b/app/test/Makefile > index 4aca77c..0d62d07 100644 > --- a/app/test/Makefile > +++ b/app/test/Makefile > @@ -158,6 +158,11 @@ CFLAGS_test_memcpy_perf.o += > -fno-var-tracking-assignments > endif > endif > > +# Disable warnings of no-strict-aliasing in virtual_pmd > +# and test_link_bonding_mode4 tests > +CFLAGS_virtual_pmd.o += -Wno-strict-aliasing > +CFLAGS_test_link_bonding_mode4.o += -Wno-strict-aliasing > + > # this application needs libraries first > DEPDIRS-y += lib > >
