Merge branch 'master' of github.com:tensorflow/compression

Author: Johannes Ballé

compression/compile.sh

@@ -17,5 +17,12 @@
 # for building custom op libraries for TensorFlow.
 TF_CFLAGS=( $(python -c 'import tensorflow as tf; print(" ".join(tf.sysconfig.get_compile_flags()))') )
 TF_LFLAGS=( $(python -c 'import tensorflow as tf; print(" ".join(tf.sysconfig.get_link_flags()))') )
+
 # If you get a link error during test, build with -D_GLIBCXX_USE_CXX11_ABI=0.
-g++ -std=c++11 -shared kernels/pmf_to_cdf_op.cc kernels/range_coder.cc kernels/range_coder_ops.cc kernels/range_coder_ops_util.cc ops/coder_ops.cc -o _coder_ops.so -fPIC ${TF_CFLAGS[@]} ${TF_LFLAGS[@]} -O2 -undefined dynamic_lookup
+OPTIONAL_MAC_FLAG=''
+
+if [ "$uname" == "Darwin" ]; then
+   OPTIONAL_MAC_FLAG='-undefined dynamic_lookup'
+fi
+
+g++ -std=c++11 -shared kernels/pmf_to_cdf_op.cc kernels/range_coder.cc kernels/range_coder_ops.cc kernels/range_coder_ops_util.cc ops/coder_ops.cc -o _coder_ops.so -fPIC ${TF_CFLAGS[@]} ${TF_LFLAGS[@]} -O2 ${OPTIONAL_MAC_FLAG}