CIRCLE WITH A DOT

@thephd no it would not help, please don't waste your time doing that. There are changes in newer versions which aren't necessarily compatible with how GCC does things, so updating to newer versions of the tools needs to be carefully audited to check every change to every generated file across the whole GCC tree (and maybe coordinated with gdb and binutils). It's a major undertaking, not just "hey I updated everything for you, here's the patch".

It's not just inertia.

@thephd if it changes so many things then you messed up (probably by running the wrong version and then not reverting the changes it made).

@thephd no you don't need to downgrade anything, just install the necessary versions in some other location and add it earlier in your PATH when regenerating GCC configs. You don't need to touch the existing versions you have.

@pinskia @thephd running configure is not supposed to alter anything in the source tree, that initial expectation was wrong.

@pinskia @thephd

You run autoreconf

(but you need the correct versions of autoconf and automake in your PATH, or running autoreconf will fail with an error)