[llvm-dev] How to make a subdirectory in a lit test?

[Adrian McCarthy via llvm-dev]

Thanks for your help.  I had multiple issues confusing the situation,
including some correct-but-surprising parsing by lit.  But it must have
been mostly pilot area (though honestly I'm not exactly sure how to explain
some of the results I had.)  The clue that lit has an internal
implementation of mkdir was very useful in sorting it all out.

On Thu, Aug 6, 2020 at 4:44 PM David Blaikie <dblaikie at gmail.com> wrote:

> Looks like 989c9e75a6fd1ef6eed9777fcd95b0f40b93f40c added a
> lit-internal version of mkdir. Not sure if/how that is/isn't exposed
> to lldb's test suites.
>
> On Thu, Aug 6, 2020 at 4:21 PM Adrian McCarthy <amccarth at google.com>
> wrote:
> >
> > Yeah, the llvm-ar tests are working on Windows.  But I'm getting
> different results when I try to use the same commands in an LLDB lit test.
> Maybe there's something messed up in LLDB's local lit config?
> >
> > If I have `mkdir %t/subdir` in my lit test, I get either file-not-found
> or a complaint about "unrecognized option /subdir."
> >
> > The one-and-only mkdir on my PATH is "C:\Program
> Files\Git\usr\bin\mkdir.exe".  If I run that explicitly, bypassing the one
> build into the Windows CMD prompt, I can use `--help`, `--parents`, and
> `--version` (among others).  But if I issue those commands from the lit
> test, I get reports of "unsupported option: `--parents`" and subdirectories
> named `--help` and `--version`.  That tells me lit isn't running the same
> command, though the "unsupported option" is not an error message I'd expect
> from CMD's mkdir.
> >
> > The GnuWin tools have been removed from my machine for a while now.
> `which` and `where` report only the Git version.
> >
> > 'Tis a puzzle.
> >
> > On Thu, Aug 6, 2020 at 3:45 PM David Blaikie <dblaikie at gmail.com> wrote:
> >>
> >> there are some existing tests that seem to do this, for instance:
> >>
> >> llvm/test/tools/llvm-ar/lto-kind-from-triple.test
> >>
> >> Are these not running on Windows?
> >>
> >> On Thu, Aug 6, 2020 at 3:36 PM Adrian McCarthy via llvm-dev
> >> <llvm-dev at lists.llvm.org> wrote:
> >> >
> >> > I'm writing a lit test that needs to temporarily make a subdirectory.
> >> >
> >> > I tried:
> >> >
> >> > ```
> >> > // RUN: mkdir %t/subdir
> >> > ```
> >> >
> >> > But on Windows, it's hard to bypass the built-in mkdir to use a
> Posix-style one from Git or GnuWin.  The built-in mkdir believes the
> `/subdir` is an unrecognized command flag.  I figure I cannot just use a
> backslash because that would fail on Posix systems.  (The test should run
> on all platforms.)
> >> >
> >> > The lit documentation mentioned a `%{pathsep}` macro, so I tried
> that.  After several minutes of confusing results, I discovered this is not
> for the path component separator, but for the separators used between paths
> in the PATH environment variable.  On Windows, that's ';', which doesn't
> help.
> >> >
> >> > Suggestions?
> >> >
> >> > Thanks,
> >> > Adrian McCarthy
> >> >
> >> > Why does this test need a separate directory?
> >> >
> >> > The test is to confirm that LLDB can locate a PDB symbol file that
> corresponds to the target executable.  In the executable, the linker writes
> the location where it generated the PDB file.  I need that path to be a
> different directory than the directory for the executable itself because
> the fallback search includes the directory of the executable.
> >> > _______________________________________________
> >> > LLVM Developers mailing list
> >> > llvm-dev at lists.llvm.org
> >> > https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
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