Don't ICE when getting an input file name's stem fails
Fixes#128681
The file stem is only used as a user-friendly prefix on intermediary files. While nice to have, it's not the end of the world if it fails so there's no real reason to emit an error here. We can continue with a fixed name as we do when an anonymous string is used.
Migrate `reproducible-build-2` and `stable-symbol-names` `run-make` tests to rmake
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
Needs try-jobs.
try-job: x86_64-msvc
try-job: armhf-gnu
try-job: test-various
try-job: aarch64-apple
try-job: i686-msvc
try-job: x86_64-mingw
Use `object` in `run-make/symbols-visibility`
This is another case where we can simply use a rust library instead of wrangling nm.
try-job: x86_64-msvc
try-job: i686-msvc
try-job: test-various
Migrate `cross-lang-lto-clang` and `cross-lang-lto-pgo-smoketest` `run-make` tests to rmake
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
This has the same problem outlined by #126180, where the tests do not actually run as no test-running CI enviroment has `RUSTBUILD_FORCE_CLANG_BASED_TESTS` set.
However, I still find it interesting to turn the Makefiles into the rmake format until the Clang issue is fixed.
This should technically be tested on MSVC... if MSVC actually ran Clang tests.
try-job: x86_64-gnu-debug
Migrate `link-cfg` and `rustdoc-default-output` `run-make` tests to rmake
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
try-job: aarch64-apple
try-job: x86_64-msvc
try-job: x86_64-mingw
try-job: x86_64-gnu-llvm-18
try-job: i686-msvc
Migrate `cross-lang-lto` `run-make` test to rmake
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
Please try:
try-job: x86_64-msvc
try-job: i686-mingw
try-job: x86_64-mingw
try-job: armhf-gnu
try-job: test-various
try-job: aarch64-apple
try-job: x86_64-gnu-llvm-18
Migrate `symbol-visibility` `run-make` test to rmake
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
Pretty scary!
- The expected number of symbols on each check has been changed slightly to reflect the differences between `llvm_readobj` and `nm`, as I think the former will print hidden symbols once and visible symbols twice, while the latter will only print visible symbols.
- The original test ran the same exact checks on `cdylib` twice, for seemingly no reason. I have removed it.
- This may be possible to optimize some more? `llvm_readobj` could get called only once for each library type, and the regex could avoid being created repeatedly. I am not sure if these kinds of considerations are important for a `run-make` test.
Demands a Windows try-job.
try-job: x86_64-mingw
Migrate `rlib-format-packed-bundled-libs-2`, `native-link-modifier-whole-archive` and `no-builtins-attribute` `run-make` tests to rmake
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
Please try:
try-job: x86_64-msvc
try-job: test-various
try-job: armhf-gnu
try-job: aarch64-apple
try-job: x86_64-gnu-llvm-18
Migrate `static-dylib-by-default`, `sanitizer-dylib-link`, `sanitizer-cdylib-link` and `sanitizer-staticlib-link` `run-make` tests to rmake
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
Please try:
try-job: x86_64-msvc
try-job: armhf-gnu
try-job: test-various
try-job: i686-msvc
try-job: x86_64-mingw
try-job: x86_64-gnu-llvm-18
