[LLVMdev] Can't build against LLVM-3.5 with CMake: CMakeExports.cmake broken?

David Farler accumulator at icloud.com
Tue Sep 9 20:40:21 PDT 2014


On Sep 9, 2014, at 7:12 AM, Dan Liew <dan at su-root.co.uk> wrote:

> This is happening because the ``LLVMConfigLibs`` makefile variable is
> empty when used in ``cmake/modules/Makefile``. It is normally set in
> Makefile.rules . However if you build with --enable-shared this
> variable doesn't get set and so LLVMExports.cmake isn't generated
> correctly.
> 
> @David: Were you also compiling this way?

The last time, yes. I built with OS X Homebrew (http://brew.sh) and it looks like their formulas use --enable-shared by default, although there is an option to turn it off (https://github.com/Homebrew/homebrew/blob/master/Library/Formula/llvm.rb). I was trying to work on a patch to update to 3.5.0 when I ran into the problem.

I'll try --disable-shared with the Homebrew formula and see if that unblocks me on 3.5.0. Homebrew also has an option to pull build from trunk as well, IIRC.

Perhaps we should advise the project to build with cmake if possible?

It looks like this has been pretty much solved, sorry for the delay. I forgot that I had llvm-dev going to a dedicated mail folder.

David



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