CI: fix CMake installation for 32/64 bit dist Linux

[Kobzol]

Should hopefully fix LLVM 17 build (#114048 (comment)).

[rustbot]

r? @pietroalbini

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[Kobzol]

@bors try

[bors]

⌛ Trying commit 934a60cecf7f6910d7e20cc61db37e907803eed9 with merge c8c872bd593ffd24db806fb556f0619bfd324e2f...

[klensy]

Feels like this should fail, as cmake required cmake to build itself, bootstraping required some additional steps (https://github.com/Kitware/CMake#building-cmake), but we'll see.

[Kobzol]

The previous version of the Dockerfile didn't seem to install CMake before running the CMake script, and the installation script itself doesn't seem to use cmake. We'll see.

[klensy]

In first versions you set prefix for cmake, but later removed 197390d

[Kobzol]

Ah, that's a good point. Still, I suppose that if cmake gets installed into the global directories (i.e. not into /rustroot, but into usr/bin), it should still be available. I don't think that we use an absolute path (like /rustroot/bin/cmake) anywhere.

[klensy]

Insert which cmake and cmake --version all around to assert which version actually used?

[Kobzol]

There should be just one cmake after the change in this PR, AFAIK (the one that we install). I removed the cmake coming from the package manager.

[bors]

☀️ Try build successful - checks-actions
Build commit: c8c872bd593ffd24db806fb556f0619bfd324e2f (c8c872bd593ffd24db806fb556f0619bfd324e2f)

[klensy]

Success? https://github.com/rust-lang/rust/blob/master/src/ci/docker/host-x86_64/dist-i686-linux/Dockerfile too

[Kobzol]

Good point, thanks!

[nikic]

@bors r+ rollup

[bors]

📌 Commit 6c4437e has been approved by nikic

It is now in the queue for this repository.