Matthew Clarkson authored Dec 11, 2023 and Matthew Clarkson committed Dec 11, 2023

`ctx.action.symlink` does not create a symlink without developer mode.

Help out the rule by explicitly creating a hardlink.

This is what engineers expect.

Adding folders prevents conflicts with other rules.

Matthew Clarkson authored Dec 11, 2023 and Matthew Clarkson committed Dec 11, 2023

This is needed when taking the tool via path in a genrule or script action.

The tool cannot be executed directly.

Matthew Clarkson authored Dec 08, 2023 and Matthew Clarkson committed Dec 08, 2023

This is a bit of a hack for Windows.

We want to be able to do:

    bazelisk run -- @echo//:entrypoint

However, because there is no extension on `entrypoint` which is
actually a hardlink/symlink to `entrypoint.bat` Bazel puts it through
`CreateProcessW` and attempts to start it as a portable executable
(PE/COFF).

The launcher is a bit of C# code to create an `exe` that uses argument
zero to find the corresponding `.bat` script and launches that instead.

The resulting executable can be hardlinked/symlinked from anywhere that
has a batch script to provide a executable launcher for the script.

We can then have nice labels on both POSIX/Windows.

Allows the `load` graph to be "load what you use" rather than pulling
in all `.bzl` files in a single `def.bzl` file.

Allows loading the triplet string without any extra dependencies.

Most downstream users will use the `triplet.bzl` but the `value.bzl`
is useful for _this_ project to load. It may be of use to downstream
as well.

Matthew Clarkson authored Dec 08, 2023 and Matthew Clarkson committed Dec 08, 2023

No need to use arithmetic substitution.

A `.com` file is a MS-DOS executable and will happily execute under
`CreateProcessW`.

Needed for Windows to execute the scripts correctly under `cmd.exe`.

Matthew Clarkson authored Dec 07, 2023 and Matthew Clarkson committed Dec 07, 2023

These _need_ to be propagated for Windows to know to not run them
as portable executables (PE/COFF) but under `cmd.exe`.

We were not forwarding it through to the templating.

Re-uses the Java detection.

There _may_ be systems that do not report all three versions.

We want to catch that in the split call as the error shows
the string that was to be split.

Universal C runtime is used on Windows.

We have the package registry enabled now!