how to fix "arm-linux-gnueabihf/lib/libstdc++.so: undefined reference to `clock_gettime@GLIBC_2.17'?

[Florian Weimer]

* 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?