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**Palmer Dabbelt** @palmer@social.kernel.org · Feb 25

Feb 25

Palmer Dabbelt @palmer@social.kernel.org

Does anyone have a good set of GCC/glibc cross-build/test scripts? Looks like riscv-gnu-toolchain is broken again...

**keithp** @keithp · Feb 25

Feb 25

keithp @keithp

@palmer Can you use crosstool-ng?

**Palmer Dabbelt** @palmer@social.kernel.org · Feb 25

Feb 25

Palmer Dabbelt @palmer@social.kernel.org

@keithp I'd love to, that'd be way easier than trying to pile up a bunch of stuff. Looks like there's some testsuite hooks in there, but it wants to SSH <https://spacegit.unibe.ch/open-source/crosstool-ng/-/tree/a173dfa93937d835b10f3b460faaa652a017f035/contrib/gcc-test-suite>. That usually means it wants to run these on some box with another userspace?

keithp @keithp@fosstodon.org

@palmer Yeah, looks like you'd need to hack up the test stuff to do them locally. It looks like those crosstool bits only support remote testing, which is odd?

Feb 25, 2025, 06:24 PM·

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**Palmer Dabbelt** @palmer@social.kernel.org · Feb 25

Feb 25

Palmer Dabbelt @palmer@social.kernel.org

@keithp it seems to be somewhat common, everything assumes you've got HW that you want to run the tests on. I think we're just in an odd spot because we still don't have any useful hardware...

**Palmer Dabbelt** @palmer@social.kernel.org · Feb 25

Feb 25

Palmer Dabbelt @palmer@social.kernel.org

@keithp looks like maybe OE can do it, though? https://github.com/openembedded/openembedded-core/blob/master/meta/recipes-devtools/gcc/gcc-runtime.inc#L286

GitHubopenembedded-core/meta/recipes-devtools/gcc/gcc-runtime.inc at master · openembedded/openembedded-coreThe official Git repository is at https://git.openembedded.org/openembedded-core/. - openembedded/openembedded-core

**keithp** @keithp · Feb 25 *

Feb 25 *

keithp @keithp

@palmer Oh, you want to use qemu? You could presumably boot a local qemu instance and then use the crosstool-ng stuff to ssh into that... I imagine it would be faster to run user-space qemu though, and OE appears to set that up. OE is also more linux-focused and doesn't try to support embedded toolchains, I think.

**Palmer Dabbelt** @palmer@social.kernel.org · Feb 25

Feb 25

Palmer Dabbelt @palmer@social.kernel.org

@keithp having something smaller than OE would be great. The crosstool-ng flow would need some distro, though, and at that point I'm back to gluing stuff together -- which kind of defeats the "use someone else's stuff" goal ;)

**keithp** @keithp · Feb 25

Feb 25

keithp @keithp

@palmer I've been building picolibc toolchains with crosstool-ng using github actions. At least I don't have to host a download server...

**Palmer Dabbelt** @palmer@social.kernel.org · Feb 25

Feb 25

Palmer Dabbelt @palmer@social.kernel.org

@keithp ya, for builds crosstool-ng is great. That's why I was kind of happy to stumble into the test script. It's gluing together all the test stuff that's the big headache, I'll just end up with a box full of hung QEMU instances again...

**keithp** @keithp · Feb 25

Feb 25

keithp @keithp

@palmer For sure. Using user-mode qemu seems like a much nicer way to go. As usual, there's no obvious best answer, just choices about what to start with and how much work to apply...