[llvm-dev] [RFC] Deprecating autoconf: Let's do it!

[Owen Anderson via llvm-dev]

Awesome!  Thanks for making this happen!

—Owen

> On Nov 6, 2015, at 9:56 AM, Chris Bieneman via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> Hi LLVMDev,
> 
> Since my last update we’ve landed patches for these issues:
> * Bug 14200 - -fno-rtti not in cxxflags given by llvm-config
> * Bug 23746 - test-suite lacks CMake support
> * Bug 25059 - CMake libllvm.so.$MAJOR.$MINOR shared object name not compatible with ldconfig
> 
> On my last thread Jonathan Roelofs pointed out that there is a workaround for Bug 21568 (Cannot add rpath), so I’m making it non-blocking. Which leaves only Bug 23947, which I’m also going to move that to non-blocking because it only applies to building LLVM on MIPS64 hardware.
> 
> With those changes we have no issues left blocking deprecating autoconf. There are still some issues we should track and follow through on, but I think all major uses are covered and we can make CMake the only officially supported way to build LLVM.
> 
> My proposal at this point is that we should officially deprecate autoconf, and I would like to follow this process for removing it:
> 
> (1) Add a note to the release notes for 3.8, and a big warning at the end of the configure script telling people to use CMake
> (2) Support autoconf with bug fixes only, no new features for 3.8
> (3) After the 3.8 branch remove all the makefiles and have the configure script log a message to use CMake
> (4) After the 3.9 branch remove the configure script completely
> 
> I’ve attached a patch that handles the first step. Please let me know if this sounds like a reasonable path for the community.
> 
> Also, a big “Thank You” to everyone who has contributed patches, reviewed patches, and helped out with this work over the last year. It has been a long road, but the end is in sight!
> 
> Thanks,
> -Chris
> 
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