tensorflow: build error: undefined reference to `clock_gettime'

System information

• Have I written custom code (as opposed to using a stock example script provided in TensorFlow): No
• OS Platform and Distribution (e.g., Linux Ubuntu 16.04): Linux CentOS 6.9
• TensorFlow installed from (source or binary): source
• TensorFlow version (use command below): master branch: the latest version
• Python version: 2.7
• Bazel version (if compiling from source): 0.8.0
• GCC/Compiler version (if compiling from source): 4.8.2
• CUDA/cuDNN version: No
• GPU model and memory: No
• Exact command to reproduce: bazel build --linkopt=-lrt -c opt --verbose_failures //tensorflow:libtensorflow_cc.so

Describe the problem

I tried to build the tensor flow c++ lib from the source code, but it failed.

Source code / logs

ERROR: /home/baigang/Projects/xylib/thirdparty/tenserflow/package/tensorflow/tensorflow/cc/BUILD:422:1: Linking of rule ‘//tensorflow/cc:ops/random_ops_gen_cc’ failed (Exit 1): gcc failed: error executing command (cd /home/baigang/.cache/bazel/_bazel_baigang/d3e5550086b82aa173767408d0f485e7/execroot/org_tensorflow &&
exec env -
PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/baigang/bin
PWD=/proc/self/cwd
/usr/bin/gcc -o bazel-out/host/bin/tensorflow/cc/ops/random_ops_gen_cc ‘-Wl,-rpath,$ORIGIN/…/…/…/_solib_k8/_U_S_Stensorflow_Scc_Cops_Srandom_Uops_Ugen_Ucc___Utensorflow’ -Lbazel-out/host/bin/_solib_k8/_U_S_Stensorflow_Scc_Cops_Srandom_Uops_Ugen_Ucc___Utensorflow ‘-Wl,-rpath,$ORIGIN/,-rpath,$ORIGIN/…,-rpath,$ORIGIN/…/…’ -pthread -Wl,-no-as-needed -Wl,-z,relro,-z,now -B/usr/bin -B/usr/bin -pass-exit-codes -Wl,–gc-sections -Wl,-S -Wl,@bazel-out/host/bin/tensorflow/cc/ops/random_ops_gen_cc-2.params) bazel-out/host/bin/_solib_k8/_U_S_Stensorflow_Scc_Cops_Srandom_Uops_Ugen_Ucc___Utensorflow/libtensorflow_framework.so: undefined reference to `clock_gettime’ collect2: error: ld returned 1 exit status Target //tensorflow:libtensorflow_cc.so failed to build INFO: Elapsed time: 418.738s, Critical Path: 35.11s FAILED: Build did NOT complete successfully