[llvm-dev] Runtime builds (libc++/compiler-rt) and install directories

[Petr Hosek via llvm-dev]

They should be searched automatically, see:

https://github.com/llvm/llvm-project/blob/03f7b13d4452e3ee7749ed0cd354071eced25502/clang/lib/Driver/ToolChain.cpp#L83
https://github.com/llvm/llvm-project/blob/03f7b13d4452e3ee7749ed0cd354071eced25502/clang/lib/Driver/ToolChain.cpp#L485

What error are you getting?

On Wed, Apr 7, 2021 at 12:05 AM Tobias Hieta via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hello,
>
> I am converting our build-system to use runtime builds (so that
> runtimes are built with the newly built compiler) by setting
> LLVM_ENABLE_RUNTIMES=libcxx;compiler-rt and I am running into some
> problems with the default search directories and getting a "out of the
> box" working toolchain.
>
> By default the runtimes are installed into
> <root>/lib/x86_64-unknown-linux-gnu/... and
> <root>/lib/clang/12.0.0/lib/x86_64-unknown-linux-gnu
>
> Trying to use clang or clang++ later will not automatically search
> those directories. With the old way of doing this (without runtime
> builds) it would install the libraries and headers in places where
> clang/clang++ would automatically find it.
>
> I have tried the CMake option LLVM_ENABLE_PER_TARGET_RUNTIME_DIR and
> set it to "OFF" but this seems not to change anything.
>
> Is there a way to get clang to automatically search these dirs or
> control the install directory?
>
> Thanks,
> Tobias
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
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