[llvm-dev] llvm-config deprecation

Andrew Kelley via llvm-dev llvm-dev at lists.llvm.org
Tue Jan 1 20:22:50 PST 2019

On 1/1/19 10:00 PM, Chandler Carruth wrote:
> Not sure why you're getting the CMake error, but we aren't deprecating
> `llvm-config` that I know of.
> The message you're seeing is about deprecating the *use* of
> `llvm-config` from CMake. There, we are providing installed CMake
> fragments that we want people to use instead of relying on the generic
> `foo-config` support in CMake combined with `llvm-config`.
> Much as your email explain, there are many (non-CMake) users of
> `llvm-config` and it would be strange for it to go away.

Thanks for the clarification. In this case, all is well. I believe that
what I am observing is the "out-of-tree" build process, where LLVM and
Clang are installed via separate source tarballs, which produces this
warning. I do think that it would be beneficial to improve the wording
of the warning to clarify that llvm-config is not deprecated, as well as
to fix "out of tree" build to not produce the warning - since this
message would be displayed for package managers such as Debian when
building Clang for the system, and this is likely to cause confusion.


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