On Wed, 14 Feb 2018 19:06:03 -0500
Jeffrey Helt <jh...@andrew.cmu.edu> wrote:
> 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")
> # 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!
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