-----Original Message----- > Date: Tue, 15 May 2018 05:23:44 -0400 > From: Gavin Hu <gavin...@arm.com> > To: dev@dpdk.org > Subject: [dpdk-dev] [PATCH v2 1/4] app: add LDFLAGS -latomic to link atomic > lib > X-Mailer: git-send-email 2.1.4 > > For ARM64 platform, libdpdk.a includes the librte_pmd_octeontx_ssovf.a, > which requires the libatomic.a support.The atomic lib is built-in in the > gcc toolchain, but for clang it has to be explicitly linked. > For more details, please refer to https://clang.llvm.org/docs/Toolchain.html > > ~/dpdk/build/lib/librte_pmd_octeontx_ssovf.a(timvf_worker.o): In function > `timvf_timer_cancel_burst': > timvf_worker.c:(.text+0x80): undefined reference to `__atomic_fetch_add_8' > /home/gavin/arm_repo/dpdk/build/lib/librte_pmd_octeontx_ssovf.a(timvf_worker.o): > In function `timvf_timer_arm_burst_sp': > timvf_worker.c:(.text+0x200): undefined reference to `__atomic_fetch_add_8' > timvf_worker.c:(.text+0x244): undefined reference to `__atomic_store_2' > timvf_worker.c:(.text+0x278): undefined reference to `__atomic_fetch_add_4' > timvf_worker.c:(.text+0x30c): undefined reference to `__atomic_store_2' > > Signed-off-by: Gavin Hu <gavin...@arm.com> > Reviewed-by: Honnappa Nagarahalli <honnappa.nagaraha...@arm.com>
Following comments are not addressed in v2. https://dpdk.org/ml/archives/dev/2018-May/101799.html https://dpdk.org/ml/archives/dev/2018-May/101802.html > --- > mk/rte.app.mk | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/mk/rte.app.mk b/mk/rte.app.mk > index 438f99d..bca8325 100644 > --- a/mk/rte.app.mk > +++ b/mk/rte.app.mk > @@ -51,6 +51,7 @@ endif > > # Link only the libraries used in the application > LDFLAGS += --as-needed > +LDFLAGS += -latomic > > # default path for libs > _LDLIBS-y += -L$(RTE_SDK_BIN)/lib > -- > 2.1.4 >
