ESP32 toolchains

[Frédéric Fauberteau <triaxx%netbsd.org@localhost>]

Hi folks,

I have the impression that the cross/xtensa-esp-elf-{binutils,gcc} toolchain doesn't allow building a valid image for an ESP32 chip. I would like to try building a package in wip inspired by https://cgit.freebsd.org/ports/tree/devel/xtensa-esp-elf to provide toochains for {esp32,esp32s2,esp32s3}-based chips.
The FreeBSD port includes both binutils and GCC and it based on the official Espressif toolchain built on top of Crosstool-NG.

1. Is there any point in trying to split such a package to separate binutils and GCC?

2. For a toolchain for foo-arch-elf, is there a reason to install it in ${PREFIX}/foo-arch-elf?