[CMake] How to determine or set the order that targets are built

[Don Hinton]

Take a look at job pools which are implemented in ninja.

You should be able to setup 2 pools and put the expensive target in one
pool and the rest in the other, which should give you the desired behavior.

  https://cmake.org/cmake/help/latest/prop_gbl/JOB_POOLS.html
  https://ninja-build.org/manual.html#ref_pool

hth...
don

On Thu, Dec 28, 2017 at 2:49 PM, Michael Jackson <
mike.jackson at bluequartz.net> wrote:

> My current project builds a bunch (30) different plugins that do NOT
> depend on each other. One of those plugins has about 200 files of highly
> templated C++ code to build which takes a while to compile and link.
> Meanwhile the other plugins only have about 20-40 files of
> "run-of-the-mill" c++ codes which all compile in a reasonably fast time. Is
> there a way to give a hint to CMake or the build system (Ninja or Visual
> Studio) to start the build of that target before the others? I know about
> the set target dependencies which in a way would solve the problem but I
> would hate to use that since there isn't an actual dependency and it really
> wouldn't work anyways. The link time for this large plugin is on the order
> of minutes on a FAST machine (Core i7 8700k overclocked).
>
> Are the targets treated in lexographical order perhaps if there are no
> dependencies? I would definintely consider renaming the plugin if that
> meant it would kick off earlier.
>
> Any suggestions would be great.
>
> --
> Michael Jackson | Owner, President
>       BlueQuartz Software
> [e] mike.jackson at bluequartz.net
> [w] www.bluequartz.net
>
>
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