[CMake] CMake generator executable variable

[Petr Kmoch]

Hi Patrick.

If the "subproject" is also CMake-generated, as you say, the best way to
build it would be:

add_custom_target(build-app
      COMMAND ${CMAKE_COMMAND} --build #... other options as appropriate
)

You might also have to set the WORKING_DIRECTORY.

This should give you a generator-agnostic command to build a
CMake-generated project.

Petr

On 22 June 2016 at 16:43, Patrick Boettcher <patrick.boettcher at posteo.de>
wrote:

> Hi list,
>
> In my project some people use Ninja as a generator, some use GNU Make.
>
> In a part of my projects I have a add_custom_command() which runs, for
> convenience, the build of another cmake-generated project in another
> dir using a different set of compilers (which is the reason for not
> being a sub_directory).
>
>   add_custom_target(build-app
>       COMMAND make -C ${APP_BUILD_DIR})
>
> This fails of course if the user decided to use ninja.
>
> We can assume that the caller's build is always using the same generator
> as the callee's one.
>
> I know there is CMAKE_GENERATOR - I could do it with 'IF()', but is
> there a variable carrying the generator-command which I can use to
> replace the bare 'make'?
>
> Thank you in advance.
>
> regards,
> --
> Patrick.
>
>
>
> --
>
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