Files
rust/tests/run-make
bors 91a0e1604f Auto merge of #138127 - compiler-errors:rollup-kcarqrz, r=compiler-errors
Rollup of 17 pull requests

Successful merges:

 - #137827 (Add timestamp to unstable feature usage metrics)
 - #138041 (bootstrap and compiletest: Use `size_of_val` from the prelude instead of imported)
 - #138046 (trim channel value in `get_closest_merge_commit`)
 - #138053 (Increase the max. custom try jobs requested to `20`)
 - #138061 (triagebot: add a `compiler_leads` ad-hoc group)
 - #138064 (Remove - from xtensa targets cpu names)
 - #138075 (Use final path segment for diagnostic)
 - #138078 (Reduce the noise of bootstrap changelog warnings in --dry-run mode)
 - #138081 (Move `yield` expressions behind their own feature gate)
 - #138090 (`librustdoc`: flatten nested ifs)
 - #138092 (Re-add `DynSend` and `DynSync` impls for `TyCtxt`)
 - #138094 (a small borrowck cleanup)
 - #138098 (Stabilize feature `const_copy_from_slice`)
 - #138103 (Git ignore citool's target directory)
 - #138105 (Fix broken link to Miri intrinsics in documentation)
 - #138108 (Mention me (WaffleLapkin) when changes to `rustc_codegen_ssa` occur)
 - #138117 ([llvm/PassWrapper] use `size_t` when building arg strings)

r? `@ghost`
`@rustbot` modify labels: rollup
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The run-make test suite

The run-make test suite contains tests which are the most flexible out of all the rust-lang/rust test suites. run-make tests can basically contain arbitrary code, and are supported by the run_make_support library.

Infrastructure

A run-make test is a test recipe source file rmake.rs accompanied by its parent directory (e.g. tests/run-make/foo/rmake.rs is the foo run-make test).

The implementation for collecting and building the rmake.rs recipes are in src/tools/compiletest/src/runtest.rs, in run_rmake_test.

The setup for the rmake.rs can be summarized as a 3-stage process:

  1. First, we build the run_make_support library in bootstrap as a tool lib.

  2. Then, we compile the rmake.rs "recipe" linking the support library and its dependencies in, and provide a bunch of env vars. We setup a directory structure within build/<target>/test/run-make/

    <test-name>/
        rmake.exe              # recipe binary
        rmake_out/             # sources from test sources copied over
    

    and copy non-rmake.rs input support files over to rmake_out/. The support library is made available as an extern prelude.

  3. Finally, we run the recipe binary and set rmake_out/ as the working directory.