ClangBuildAnalyzer VS stl-header-heft

> On another note: C++ compiler should by default keep statistics about the chain of #include's / parsing during compilation and dump it to a file at the end and also summarize how badly you're re-parsing the same .h files during build.

Not exactly that, but do you know clang's -ftime-trace and tools like https://github.com/aras-p/ClangBuildAnalyzer which help analyzing where time is actually spent? (In small repeated headers I don't see much of a problem, but they of course may contain not so small things ...)

You can also use the following when you want to inspect multiple files: https://github.com/aras-p/ClangBuildAnalyzer

ClangBuildAnalyzer reports on parsing, build, and link time, whereas IncludeGuardian only reports on parsing time.

https://github.com/aras-p/ClangBuildAnalyzer is a very useful tool to quantify the cost of different headers (and other costly parts of the compile such as template instantiations). It doesn’t help with actually fixing such problems, but it’s a pretty good ruler to measure where the time is spent.

If you can compile with Clang, I suggest you to try ClangBuildAnalyzer

The older I get the more I think #include in public headers needs to have a whitelisted regex git push filter, and the permitted whitelist of permitted includes is small and excludes most of the standard library. https://github.com/ned14/stl-header-heft, after all.

As you know, every two years or so I update https://github.com/ned14/stl-header-heft and historically the only STL to shrink in terms of token count has been yours, albeit starting from a high initial base. libstdc++ consistently grows. I look forward to discovering how VS2022's STL compares to preceding editions.

You may want to have a look at https://github.com/ned14/stl-header-heft too :)

string_view drags in a ton of the STL. string_view cannot deallocate on destruction. See https://github.com/ned14/stl-header-heft.

Even million line C++ codebases can compile from scratch within minutes if your header files never include anything not in the least impact headers list from https://github.com/ned14/stl-header-heft.