Re: [gentoo-dev] cmake + ninja vs autotools

[Christoph Junghans]

On Nov 16, 2017 6:29 AM, "Brian Evans" <grknight@g.o> wrote:

On 11/15/2017 10:27 PM, William L. Thomson Jr. wrote:
> It maybe worth considering switching the default generator in the
> cmake-utils.eclass from the default of emake to ninja.
>
> - : ${CMAKE_MAKEFILE_GENERATOR:=emake}
> + : ${CMAKE_MAKEFILE_GENERATOR:=ninja}
>
> For those with cmake ebuilds you can test this out now via
>
> CMAKE_MAKEFILE_GENERATOR="ninja"
> inherit cmake-utils
>
> Working with both cmake and meson. It seems the real performance of
> meson comes from ninja. I am a bit more a fan of cmake than meson for
> cpack, generation of deb, rpm, and binary tarball, in addition to
> sources. That can be done with meson but not as elegantly at this time.
>
> ninja is noticeably faster than make. I haven't seen any cases yet where
> cmake autotools works, and ninja does not. They seem pretty equal, so
> should be safe. Of course could use testing first.

There are still cases where ninja fails...

Ninja doesn't support Fortran as well.


I have forcefully set emake in dev-db/{mysql,mysql-cluster} because they
fail to build with ninja (using the cmake generator) yet emake works
just fine.

Brian