参考：https://stackoverflow.com/a/956698/12338026
bazel中，在linkopts中添加-ldl，如：
cc_binary(
name = "hdfs_rw",
srcs = ["hdfs_rw_test.cc"],
linkopts = [
"-lpthread",
"-ldl",
],
...
)
error: undefined reference to 'dlsym'
原文：https://www.cnblogs.com/midnightcat/p/12704247.html