[llvm-dev] [RFC] I've made a huge mistake

C Bergström via llvm-dev llvm-dev at lists.llvm.org
Sat Apr 1 10:35:37 PDT 2017

Someone is feeling the pressure of April 1st.. Umm... it would have
been more funny if the link pointed to a rick roll video..

On Sat, Apr 1, 2017 at 11:54 PM, NAKAMURA Takumi via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> Could we have 3rd build system?
> As you knew, CMake is not "a hacker's toy."
> On Sun, Apr 2, 2017 at 12:48 AM Chris Bieneman via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>> LLVM-Dev,
>> I'm sorry to be the bearer of bad news. I've spent the last several months
>> in severe denial of the problem and I just can't keep denying it to myself
>> anymore. I've made a huge mistake. We never should have removed autoconf
>> support.
>> I've come to this conclusion after a great deal of thoughtful reflection
>> on the impact of our CMake build system over the last year. Below I've
>> listed the primary reasons that have weighed on my conscience.
>> (1) CMake's Windows support has led more Windows users to LLVM, and as a
>> Unix user, I just can't relate to them. Call me old fashioned, but if you
>> aren't writing code in a vt100 terminal you're just not in a world I
>> understand. I can even set aside the age-old Emacs vs Vim debate, but not
>> writing code in a terminal is something completely different.
>> (2) CMake's scripting language has made our build system support all these
>> crazy use cases that I never dreamed of, and they're kinda scary. Did you
>> know that people are cross-compiling arm-Linux toolchains from Darwin?
>> Blasphemy!
>> (3) The CMake open source community is too responsive! I file bugs and
>> they fix them. This is unacceptable. Since they fix my bug reports I can't
>> claim to my boss that I'm blocked on someone outside the company fixing
>> something anymore. This is a really big problem detracting from my foam
>> sword fighting practice time.
>> (4) People expect it to work. With the autoconf build everyone kinda
>> expected it to fall over in anything other than non-basic uses, and we were
>> all ok with it. With CMake people expect things like 3-stage clang builds to
>> just work out of the box. It is completely exhausting to have the burden of
>> a build system that works.
>> (5) We don't have Eric Christopher to save us all. With autoconf Eric
>> ensured that everything was in tip-top shape. Now we don't have Eric
>> watching all our build system commits. What has the world come to!
>> To swiftly rectify this problem I've provided a patch:
>> https://reviews.llvm.org/D31570
>> Sincerest apologies,
>> -Chris
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