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Support "system lib mode" for llvm_profiler_runtime #37
Description
Thanks for this handy project, it helped us in building a internal WASM test coverage pipeline.
While we are implementing the integration, we found it hard to have our CentOS CI environment with WASM capable Clang installed so we ended up precompile this thing and fork minicov so we can pass its path in with env var:
const LLVM_PROFILER_RUNTIME_ENV: &str = "MINICOV_LLVM_PROFILER_RUNTIME";
fn use_prebuilt_llvm_profiler_runtime(target: &str) -> bool {
let names = [
format!("{LLVM_PROFILER_RUNTIME_ENV}_{target}"),
format!(
"{LLVM_PROFILER_RUNTIME_ENV}_{}",
target.replace(['-', '.'], "_")
),
LLVM_PROFILER_RUNTIME_ENV.to_owned(),
];
// ...
}Later when building:
export MINICOV_LLVM_PROFILER_RUNTIME_wasm32_wasip1="/usr/local/lib/minicov/wasm32-wasip1/libllvm_profiler_runtime.a"Looking forward to your opinion on how should we contribute this back to upstream (e.g. controlled with cargo features or just read the env var).
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