Compiling diesel-migrations for FreeBSD fails.

[gahag]

Compiling diesel-migrations with cross build --target=x86_64-unknown-freebsd results in the following error:

error: libthr.so.3: cannot open shared object file: No such file or directory
  --> /cargo/registry/src/github.aaakk.us.kg-1ecc6299db9ec823/diesel_migrations-1.4.0/src/lib.rs:82:1
   |
82 | extern crate migrations_macros;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

error: could not compile `diesel_migrations`

Cargo.toml:

name = "ohgodwhy"
version = "0.1.0"
authors = ["gahag <[email protected]>"]
edition = "2018"

[dependencies]
diesel = { version = "1.4", features = ["sqlite"] }
diesel_migrations = { version = "1.4", features = ["sqlite"] }

main.rs:

fn main() {
    println!("Hello, world!");
}

Is this an issue with the cross' FreeBSD setup, or with diesel-migrations?

[gahag]

I have two projects that use diesel_migrations. For some odd reason, one of them builds fine, while the other fails with the same error as the supplied minimal example. I have no idea why one of them works.

[tesaguri]

This seems to be caused by SQLITE3_LIB_DIR environment variable in the FreeBSD container, which, I guess, causes the procedural macro to attempt to link against the target libsqlite3, instead of the host's one.

I have filed a fix for this issue: #549.

[gahag]

It's great that you found the issue. I'm excited to try on this patch.