[build-script] When building packages install llvm-cov, llvm-profdata…

[gottesmm]

… for use with swiftpm.

rdar://44567818
https://bugs.swift.org/browse/SR-9082

---

I think this will work. But lets see.

[gottesmm]

@swift-ci build linux toolchain

[gottesmm]

@swift-ci build toolchain

[shahmishal]

LGTM

[gottesmm]

To be clear, the linux change affects /all/ linux installations not just packages.

[gottesmm]

@swift-ci smoke test

[swift-ci]

Linux Toolchain (Ubuntu 16.04)
Download Toolchain
Git Sha - b24e333

Install command
tar zxf swift-PR-20044-77-ubuntu16.04.tar.gz
More info

[swift-ci]

macOS Toolchain
Download Toolchain
Git Sha - b24e333

Install command
tar -zxf swift-PR-20044-93-osx.tar.gz --directory ~/

[gottesmm]

I just verified by hand that both toolchains have llvm-cov and llvm-profdata installed. I am going to add an integration test in a separate PR.

[gottesmm]

@swift-ci smoke test linux platform

[aciidgh]

I tested the built linux toolchain, the codecov feature is indeed working. Thanks!

[gottesmm]

@aciidb0mb3r can you put your test into an integration test? So we can make sure this always works?

[gottesmm]

(just asking since you said you had an impl).

[gottesmm]

I think the tsan test is XFAILed now. Lets try this once again.

[gottesmm]

@swift-ci smoke test linux platform

[aciidgh]

Yeah, I'll try to convert my test for the swift-integration-test repo. Unfortunately, that repo is always very hard to use locally if you don't build toolchains regularly.

[aciidgh]

Opened PR for integration test: swiftlang/swift-integration-tests#35