README: Fedora: Add gcc, gcc-c++, cargo, and awk

[osalbahr]

Thank you for making Rust GCC better!

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This commit adds dependencies needed for ../gccrs/configure --prefix=$HOME/gccrs-install --disable-bootstrap --enable-multilib --enable-languages=rust (from the README) in a fresh FedoraLinux-43 WSL. Most are also needed in a fedora container (the exception is awk; it's present in the container but not WSL).

In other words, this commit fixes the following configure errors (truncated and combined):

configure: error: no acceptable C compiler found in $PATH
configure: error: *** A compiler with support for C++14 language features is required.
configure: error: cargo is required to build rust
./config.status: line 1194: awk: command not found

The goal is to eventually package gccrs in Copr (Fedora's AUR). Finding all the dependencies is a first step.

Signed-off-by: Osama Albahrani <osalbahr@gmail.com>

[osalbahr]

Running make in the container, I also got:

/bin/sh: line 1: cmp: command not found

At the end. Not sure if that (diffutils) should also be added.

It seems to build fine in WSL.

[philberty]

You cant remove the README

[osalbahr]

Oops. I'm not sure how that happened. I used GitHub's web VS Code UI to edit README.md only.

Anyways, I just revived README.

[philberty]

LGTM

[philberty]

You need to fix your commit message to pass our commit checker. you can use the tools to setup git gcc-commit-mklog in contrib

[CohenArthur]

LGTM!

[CohenArthur]

Thanks @osalbahr!