I wanted to post links to these patches on AtariAge, but their forum rules prevent creating a new topic which would make sense for this. So, I'm doing that here.
These patches will port the GNU tools to the TMS9900 processor. They use ELF-format for the object files. I have other tools to convert the resulting ELF executable to TI cartridge and memory image (EA5) formats. I don't have a converter for the TI linkable (EA3) format yet, but I'll probably get around to it. This is not a priority for me since I'm planning to use my own loader and do not intend to link to the TI routines anytime soon.
To the patches!