Error building `sprs` - Githubissues

sparsemat / sprs

sparse linear algebra library for rust

Apache License 2.0

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Error building `sprs` #344

Open MashyBasker opened 9 months ago

MashyBasker commented 9 months ago

What I did

Forked and cloned the project
run cargo build inside the project

Error encountered

Could not find the file Eigen/SparseCore

What I tried

Try to compile it with Rust nightly(did not work)
Tried export dl_eigen=1(did not work)
Install eigen2 from AUR(did not work)

mulimoen commented 9 months ago

Could you try cargo build --workspace --exclude sprs-benches or cargo build --workspace --features sprs-benches/dl_eigen? Strange that it does not check find the eigen library. I'll check the setup on my arch install when I'm back at a computer.

MashyBasker commented 9 months ago

After running the two commands you provided, the build process was successful. However, when using cargo build --workspace --features sprs-benches, additional packages were installed, notably vcpkg. Consequently, I assumed that eigen would also be installed. Nevertheless, upon running just cargo build again, the same error as originally posted occurred.

I think it would be good to add the command cargo build --workspace --features sprs-benches/dl_eigen in the sprs-benches/README.md

mulimoen commented 9 months ago

Packages are not installed system-wide, you will need to specify --features sprs-benches/dl_eigen for every cargo invocation, unless you install eigen yourself (package name is eigen).

MashyBasker commented 9 months ago

Yes. I've made a PR for future users who encounter this error while building. Please inform me if I need to make some edits.