Re: Transitioning Ceph from Autotools to CMake

[Mark Nelson <mnelson@redhat.com>]

Just here to provide moral support. Go CMake go! :)

Mark

On 07/30/2015 02:01 PM, Ali Maredia wrote:
> After discussing with several other Ceph developers and Sage, I wanted
> to start a discussion about making CMake the primary build system for Ceph.
>
> CMake works just fine as it is (make -j4 on master with CMake builds
> 350% faster than autotools!), but there's more work needed to make it
> into a first-class build system.
>
> Short term (1-2 weeks):
>   - Making sure CMake works on all supported platforms: Centos7, RHEL7,
>     Ubuntu 14.04 & 12.04, Fedora 22, Debian Jessie, Debian Wheezy are the
>     target platforms I have noted to test on already.
>   - Adding a target similar to make check
>   - Creating CMake targets that build packages (such as for rpm or debian)
>   - Writing documentation for those who haven't used CMake before to smooth the
>     transition over
>   - Making sure no targets or dependencies are missing from the
>     current CMake build, and that CMake supports all current
>     targets, configurations and options
>   - Replacing the integration autotools has with any automated build/test
>     systems such as the gitbuilder
>
> Longer term (2-4 weeks):
>   - Removing the current autotools files, to avoid doubling build system
>     workload
>   - Adding more but shorter CMakeLists.txt files to a tree like structure
>     where a CMakeLists.txt would be in every subdirectory
>
> I'm already working on a target similar to the make check target, and plan
> on working on the other short term goals over the next weeks and beyond.
>
> I wanted to get feedback from the community any reasons why someone started using
> CMake but stopped (ex: lack of functionality), and more broadly, on what other
> obstacles there might be for the transition.
>
> -Ali
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