thanks for your reply. my link cmd is: arm-linux-gnueabihf-g++ main.o -L ../arm_common/build/lib/ -larmcomm -pthread -lelf -ldl -lrt here, arm_common is my own lib for my use. because I use shm_xxx functions for shared memory, so I have to link rt. At 2020-03-10 22:13:54, "Florian Weimer" <fw@xxxxxxxxxxxxx> wrote: >* kipade: > >> Hello, I use linaro gcc 5.3 to compile cpp files using -std=gnu++14, and I got an link error: >> >> >> "/opt/arm-toolchain/linux/linaro/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/5.3.1/../../../. >> ./arm-linux-gnueabihf/lib/libstdc++.so: undefined reference to `clock_gettime@GLIBC_2.17' > >What's the full linker command line?
