Completely broken, will not compile on Clear Linux or other distros I've tried

This code is *messy*. Very, unbelievably messy.

I don't understand why GCC references it in its documentation, when GCC itself compiles brilliantly across dozens of very different environments I've tried it on, and this doesn't compile anywhere for me...

GCC mentions the need to use one little utility function:
https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html#index-fauto-profile
("Then use the create_gcov tool to convert the raw profile data to a format that can be used by GCC.")

I don't know why they ever merged support of this less-than-research grade codebase, and why it persists into GCC13.

Why did you merge this into GCC in a partial frankenstenian way? Why not merge the ability to support the perf output directly? Nobody I've ever talked to whose heard of AutoFDO has gotten this hot mess to compile.

GCC 13.1. No LLVM. I am not using the LLVM compiler, and am only interested in using auto-profile with GCC. I just need that one utility, "create_gcov", and nothing else in this 1.7GB code morass that gets pulled in from git clone. (Why so huge and messy?).

[garbage.log](https://github.com/google/autofdo/files/12862747/garbage.log)

Here's the log showing the extent of the failure. It's not pretty.