[llvm-dev] Building the CRT

Mehdi Amini via llvm-dev
Mon, 20 Mar 2017 21:37:01 -0000

> On Mar 20, 2017, at 12:47 PM, Evandro Menezes via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
>
> Folks,
>
> I'm at a loss trying to add Compiler-RT to an LLVM build, even after
checking out the instructions at http://compiler-rt.llvm.org, so I'd
appreciate your help.
>
> I've tried adding the CMake options LLVM_ENABLE_PROJECTS

For this option, you need to follow:
http://llvm.org/docs/GettingStarted.html#for-developers-to-work-with-a-git-monorepo
<http://llvm.org/docs/GettingStarted.html#for-developers-to-work-with-a-git-monorepo>

You can’t add this to an existing build directory, you need to wipe it and
re-run cmake (at least for me that’s the only way I found).

—
Mehdi



> , LLVM_BUILD_EXTERNAL_COMPILER_RT, LLVM_EXTERNAL_COMPILER_RT_SOURCE_DIR,
CLANG_DEFAULT_RTLIB.  All to no avail.
>
> FWIW, I'm building for the targets AArch64, ARM and X86.
>
> Feeling like a newbie makes me want to cry... :-}
>
> Thank you,
>
>
> --
> Evandro Menezes
>
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