On Wed, 14 Feb 2018 19:06:03 -0500 Jeffrey Helt <[email protected]> wrote:
> Hi, > > I am attempting to build a shared library that uses DPDK, specifically that > wraps the Linux socket API and backs it by shared memory DPDK shared memory > regions. I built DPDK 17.11 with “CONFIG_RTE_BUILD_SHARED_LIB=y”. In my > shared library directory, I am using the following Makefile: > > ifeq ($(RTE_SDK),) > $(error "Please define RTE_SDK environment variable") > endif > > # Default target, can be overridden by command line or environment > RTE_TARGET ?= x86_64-native-linuxapp-gcc > > include $(RTE_SDK)/mk/rte.vars.mk > > # binary name > SHARED = libshim.so > > # all source are stored in SRCS-y > SRCS-y := wrap_socket.c > > CFLAGS += -O3 > > include $(RTE_SDK)/mk/rte.extshared.mk > > However, whenever I try to use my library, such as with > "LD_PRELOAD=./build/lib/libshim.so ./test”, I receive "symbol lookup error: > ./build/lib/libshim.so: undefined symbol: rte_eal_init”. What am I missing? > > Thank you in advance for help! > > Jeff The DPDK builds lots of little shared libraries. You need to have all of them in your LD_LIBRARY_PATH and then add your socket wrapper.
