Bazel seems to be picking up steam. And I'm fairly certain that blaze BUILD files for gperftools do exist. Any chance of open-sourcing them as an experimental second build system?

The current autotools setup makes certain build situations unnecessarily difficult (e.g. an FDO build of many targets that depend on tcmalloc, including doing FDO for tcmalloc itself), and bazel/blaze shine for such builds.