This repository contains the script needed to compile bare-metal GCC for various architectures using Linux distributions. The GCC source is fetched from the release branch hence, contains all the release branch changes.

Below are the packages you'll need

• Ubuntu or other Debian based distros

  Note: On Ubuntu 20.04, the default GCC version is gcc 9.3.x which (in my test cases) brought in a lot of unneeded regressions. This was however fixed by compiling the toolchain itself with GCC 10

  To install and set GCC 10 as the default compiler, you need to:

  apt-get update ```
  
  ```bash sudo apt-get install flex bison ncurses-dev texinfo gcc gperf patch
  libtool automake g++ libncurses5-dev gawk subversion expat libexpat1-dev
  python-all-dev binutils-dev bc libcap-dev autoconf libgmp-dev
  build-essential pkg-config libmpc-dev libmpfr-dev autopoint gettext txt2man
  liblzma-dev libssl-dev libz-dev mercurial wget tar gcc-10 g++-10 zstd
  --fix-broken --fix-missing ```
  

• Arch Linux

  bash sudo pacman -S base-devel clang cmake git libc++ lld lldb ninja

• Fedora

  mpfr-devel gmp-devel libmpc-devel zlib-devel glibc-devel.i686 glibc-devel
  binutils-devel g++ texinfo bison flex cmake which clang ninja-build lld ```

Running this script is quite simple. We start by cloning this repository: bash git clone https://github.com/KenHV/gcc-build.git gcc-build bash ./build-gcc.sh -a <architechture>

As of now, I only support arm, arm64 and x86 (compiles for x86_64 only). This list is subject to change as I receive requests.

Keep in mind that this script contains just the bare minimum prerequisites.

• Vaisakh for writing this script.
• OS Dev Wiki for knowledge base.
• USBHost's Amazing GCC Build script for certain prerequisite dependencies.

My GCC cross-compiler builds are automated and pushed weekly i.e. on Sundays at 00:00 GMT (05:30 IST). They are pushed to:

• ARM64
• ARM32

You're more than welcome to improve the contents within this script with a pull request. Enjoy :)