Updating GCC/Binutils Toolchain

HelenOS is build using cross toolchain built from our repositories that contain modified versions of GCC and Binutils. The customization consists of the addition of HelenOS-specific targets.

The process of updating the toolchain is very similar for both GCC and binutils-gdb projects.

• Add another Git remote with upstream development.
  • ​git://sourceware.org/git/binutils-gdb.git
  • ​git://gcc.gnu.org/git/gcc.git
• Find a branch on the upstream with the right version.
  • binutils-2_40-branch
  • releases/gcc-13
• Create a new branch starting on the last commit from branch from the previous step.
  • binutils-2_40-helenos
  • 13_1_1-helenos
• Rebase changes in previous *-helenos branch onto the branch from the previous step.
  • There will be conflicts: mostly in various *config* files as new targets are added or obsoleted ones are removed. Usually resolving them is straightforward.
• Update the version numbers in toolchain.sh.

Pro-tip

Set up the repositories in toolchain.sh to point to your local clones to speed-up the cloning. Or setup the clones in the downloads directory and comment-out all Git operations.