In order to compile Fudge for x86 we need to create a cross-compiler. Building a cross-compiler can be a tedious task but luckily there is tool called crosstool-ng that automates the entire process for us. Even if you happen to be using the same platform as we are targeting you should still build a cross-compiler because the tools that ships with your operating system might have been specifically configured for your system. When compiling Fudge, we must use a barebone compiler.
Download and install crosstool-ng. The recommended version is 1.23.0.
$ wget http://crosstool-ng.org/download/crosstool-ng/crosstool-ng-1.23.0.tar.bz2
$ tar xjf crosstool-ng-1.23.0.tar.bz2
$ cd crosstool-ng-1.23.0
$ ./configure
$ make
# make install
The last command must probably be run as root.
Create a folder in your home directory called temp and cd to it.
$ mkdir ~/temp
$ cd ~/temp
Configure the cross-compiler environment by running:
$ ct-ng menuconfig
This will start the configuration program. Set the target architecture to x86. Select:
Target options -> Target Architecture -> x86
By default the cross-compiler will be installed in ~/x-tools/x86-unknown-elf/. You can change this if you want. Please refer to the crosstool-ng website for more information on how to customize your setup.
Exit the configuration tool by pressing exit a few times. Before you leave the last screen you will be asked if you want to save these settings. Press yes.
Start to build the cross-compiler:
$ ct-ng build
Depending on your system this may take some time, usually around 10-15 minutes. Grab a coffee.