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The GNU C-Compiler with Binutils and other useful tools for cross development

This is a Makefile based approach to build the same files as in the old amigaos-toolchain to reduce the build time.

Right now these tools are build:

  • binutils
  • gcc with libs for C/C++/ObjC
  • fd2sfd
  • fd2pragma
  • ira
  • sfdc
  • vbcc
  • vlink
  • libnix
  • ixemul (not really, but the headers are used)

Short Guide



sudo yum install wget gcc gcc-c++ python git perl-Pod-Simple gperf patch autoconf automake make makedepend bison flex ncurses-devel gmp-devel mpfr-devel libmpc-devel gettext-devel texinfo rsync readline-devel


sudo dnf install wget gcc gcc-c++ python git perl-Pod-Simple gperf patch autoconf automake make makedepend bison flex ncurses-devel gmp-devel mpfr-devel libmpc-devel gettext-devel texinfo rsync readline-devel

Ubuntu, Debian

sudo apt install make wget git gcc g++ lhasa libgmp-dev libmpfr-dev libmpc-dev flex bison gettext texinfo ncurses-dev autoconf rsync libreadline-dev

If building with a normal user, the PREFIX directory must be writable (default is /opt/amiga). You can add the user to an appropriate group.


Install Homebrew ( or any other package manager first. The compiler will be installed together with XCode. Once XCode and Homebrew are up install the required packages:

brew install bash wget make lhasa gmp mpfr libmpc flex gettext gnu-sed texinfo gcc@11 make autoconf

By default macOS uses an outdated version of bash. Therefore, on macOS host always pass the the SHELL=/usr/local/bin/bash parameter (or any other valid path pointing to bash), e.g.:

make all SHELL=$(brew --prefix)/bin/bash

On macOS it may be also necessary to point to the brew version of gcc make and autoconf, e.g.:

CC=gcc-11 CXX=g++-11 gmake all SHELL=$(brew --prefix)/bin/bash

ALSO NOTE If you want m68k-amigaos-gdb then you have to build it with gcc

macOs on Mi1

Native builds on M1 Macs are now directly supported.

Windows with Cygwin

Install cygwin via setup.exe and add wget. Then open cygwin shell and run:

install apt-cyg /bin
apt-cyg install gcc-core gcc-g++ python git perl-Pod-Simple gperf patch automake make makedepend bison flex libncurses-devel python-devel gettext-devel libgmp-devel libmpc-devel libmpfr-devel rsync

Windows with msys2

Precompiled suite with installer:

pacman -S git base-devel gcc flex gmp-devel mpc-devel mpfr-devel ncurses-devel rsync autoconf automake

Also note that you MUST cd into an absolute path e.g. cd /c/msys64/home/test/amiga-gcc/ before running make, or builds may fail, because some files aren't found correctly (that's a msys2 bug).

Ubuntu running on the Windows 10 Linux subsystem

same as normal ubuntu

Howto Clone and Download All You Need

git clone
cd amiga-gcc
make update


make help


make help 		        display this help
make all 		          build and install all
make <target>		      builds a target: binutils, gcc, fd2sfd, fd2pragma, ira, sfdc, vbcc, vlink, libnix, ixemul, libgcc
make clean		        remove the build folder
make clean-<target>	  remove the target's build folder
make clean-prefix	    remove all content from the prefix folder
make update		        perform git pull for all targets
make update-<target>	perform git pull for the given target

display which targets can be build, you'll mostly use *make all *make clean *make clean-prefix

to use NDK3.2 add NDK=3.2 to the make parameters


The default prefix is /opt/amiga. You may specify a different prefix by adding PREFIX=yourprefix to make command. E.g.

make all PREFIX=/here/or/there

The build performs the installation automatically, there is no separate make install step. Because of this, you must make sure that the target PREFIX directory is writable for the user who is doing the build. If the PREFIX directory points to a directory where the user already has appropriate permissions the below steps can be ommited and the directory will be created by the build process.

sudo mkdir /opt/amiga
sudo chgrp users /opt/amiga
sudo chmod 775 /opt/amiga
sudo usermod -a -G users username

After adding the user to the group, you may have to logout and login again to apply the changes to your user.


Simply run make all. Also add -j to speedup the build.

make clean
make clean-prefix
time make all -j3

takes roughly 10 minutes on my laptop running ubuntu. takes forever running cygwin on windows^^.

Kickstart 1.3

If you plan to develop for Kickstart 1.3 you should use -mcrt=nix13 in your compiler commandline

m68k-amigaos-gcc test.cpp -mcrt=nix13

The include files for 1.3 - which are picked up by the compiler if -mcrt=nix13 is used - can be found at <PREFIX>/m68k-amigaos/ndk13-include i.E. /opt/amiga/m68k-amigaos/ndk13-include

Checking gcc

To check the built version you may consider to run the gcc dejagnu tests. This does not cover everything but it's a start. The tests are using my improved version of VAMOS (downstream of to emulate the Amiga, and right now not all improvements went back into the upstream.

Debian / Ubuntu

sudo apt install dejagnu
sudo cp baseboards/* /usr/share/dejagnu/baseboards
pip install -U git+  
make check


brew install dejagnu
cp baseboards/* $(brew --prefix)/opt/dejagnu/share/dejagnu/baseboards
pip install -U  git+  
make check

Version management

This project does not use git submodules since it's to inconvenient to work with develop and release branches in each module and the main module.

Instead the Makefile provides some targets to switch to an older state for all modules.

Switching amiga-gcc to a given date

Use make to switch all modules to a given date. You may also add the time

make v date=2021-04-01

Switching amiga-gcc back to the branches

Run make to switch all modules back to the branch

make v

Show the current commit for all submodules

This lists all modules with the last commit. Useful if you switched to a given date to show what's where.

make l

Switch a module to a different branch

You can switch modules to different branches. E.g.

make branch mod=binutils branch=devel1

The default branches and repositories are in the file default-repos, the local state is managed in the file .repos.