[llvm-dev] [RFC] Removing autoconf from trunk

Wed Jan 13 23:52:56 PST 2016

Maybe the request stems from the (common) misunderstanding that the build folder cannot be inside the source dir.

source_dir/build_dir where build_dir is a subfolder of source_dir and doesn't contain any CMakeFiles.txt is *not* an in source build in CMake terms.

An in source build is when source_dir == build_dir and I agree that this shouldn't have to be supported and should be considered a bad practice with CMake and IMO has absolutely no advantage.

--
Johannes S. Mueller-Roemer, MSc
Wiss. Mitarbeiter - Interactive Engineering Technologies (IET)

Fraunhofer-Institut für Graphische Datenverarbeitung IGD
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-----Original Message-----
From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] On Behalf Of Dan Liew via llvm-dev
Sent: Wednesday, January 13, 2016 23:52
To: Chris Bieneman
Cc: llvm-dev
Subject: Re: [llvm-dev] [RFC] Removing autoconf from trunk

> Also, we should be able to allow in-source cmake builds once we remove 
> the makefiles, right?

I'm strongly against enabling in-source cmake builds. Apart from being IMHO bad practise certain parts of our CMake files may be assuming. the build is out of source (e.g. I had a patch recently that assumed this because in-source builds were impossible at the time).

We seemed to be doing fine so far without in-source cmake builds so I see no good reason to add support for them.
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