I don't think we managed to get compiler-rt working with Xcode yet. @vedantk?

Comment by Dan Raviv (JIRA)

Just to make sure I'm clear - The issue I have is that -x doesn't work (the attached output is for -x).
I only mentioned -rt does seem to work (in case it happens to help).

Sorry, "compiler-rt" is one of the subprojects you checked out when building everything, and that's what's failing to build ("clang_rt.builtins_x86_64h_osx"). You can probably delete the "compiler-rt" folder from your top-level directory, wipe your build, and try again; it's not currently a required component.

"rt" there stands for "runtime [library]", not "-r[elease+debuginfo] -t[est]".

Comment by Dan Raviv (JIRA)

Ok, I've tried again after deleting the compiler-rt folder, but still getting some related error. Attached.
build-script-output2.txt

By the way, I've just been following the default instructions for building the project as listed in swift's main repo - seems weird that compiler-rt would be installed on OS X by these instructions if it is not supported.

@belkadan We haven't added support for building swift-compiler-rt with -x yet (rdar://problem/25179060).

danra (JIRA User) It looks like you need to remove CMakeCache and re-run cmake.

Right. It's supported on OS X, just not when building with Xcode. Since building with Xcode already doesn't do a complete build of Swift (no iOS support) we considered that acceptable for now.

Sorry, when I said "wipe your build" I meant you'll also have to delete the "build/Xcode..." directory, so that it starts from scratch.

@vedantk, should we just pass the CMake flag to disable building compiler-rt when using -x?

@belkadan Yes, I'll send a PR for this shortly.

@belkadan #1851

Comment by Dan Raviv (JIRA)

Doing a clean build after removing compiler-rt worked. Thanks!

We added a workaround in f9b79e4