Causes projects to always rebuild #21
Description
When lz4 is listed anywhere in the dependencies of a project, the project must always rebuild/relink; it is never clean. I would expect the second cargo build here to report Finished, without any Compiling.
% cargo build
Compiling lz4 v1.21.0
Compiling lz4rebuild v0.1.0 (file:///home/faux/code/testcases/lz4rebuild)
Finished dev [unoptimized + debuginfo] target(s) in 0.43 secs
% cargo build
Compiling lz4 v1.21.0
Compiling lz4rebuild v0.1.0 (file:///home/faux/code/testcases/lz4rebuild)
Finished dev [unoptimized + debuginfo] target(s) in 0.43 secs
This is especially annoying when repeatedly re-running tests in a project that takes a while to link.
I don't know what's causing the problem
The above project is just a cargo init --bin with the dependency added. Using an explicit version makes no difference:
% cat Cargo.toml
[package]
name = "lz4rebuild"
version = "0.1.0"
authors = ["Chris West (Faux) <[email protected]>"]
[dependencies]
lz4 = "*"
% cat src/main.rs
fn main() {
println!("Hello, world!");
}