Hi Mike, You don't need to install libcriterion-dev to build Daffodil because sbt never compiles and runs the C code generator's C unit tests. You would need libcriterion-dev only if you wanted to make changes to the C unit tests and/or run them yourself. BUILD.md tells you how to set up a Daffodil developer's complete environment, but not everyone needs to make changes to the C code generator so you can skip installing the packages used to develop the C code generator.
If you still want to install libcriterion-dev anyway and you cannot upgrade the machine to Ubuntu 22.04 (choosing the same version of OS, compiler, and everything else used by CI and developers avoids these kind of problems), then <https://github.com/Snaipe/Criterion> says: Binary releases for Linux x86_64 are available on the release page: <https://github.com/Snaipe/Criterion/releases> If you have a different platform, you can still build the library from source: <https://criterion.readthedocs.io/en/latest/setup.html#installation> If the first binary release you download doesn't work, downloading a sufficiently old binary release should work, or you can build the library from source. But as I said, you probably should not worry about libcriterion-dev at all. John -----Original Message----- From: Mike Beckerle <mbecke...@apache.org> Sent: Thursday, March 14, 2024 3:31 PM To: dev@daffodil.apache.org Subject: EXT: unable to build daffodil on ubuntu 20.04 The build instructions call for a module libcriterion-dev which ubuntu (20.04) seems to not know about. Trying to install it piece by piece leads to libcriterion-dev requires libcriterion3 which requires libc6(>=2.38)... at that point I figured I better stop and ask, as I have libc6 2.31-1 installed (came with the OS)
