[CMake] Making variables visible in ccmake

[Eric Noulard]

Le ven. 28 sept. 2018 à 11:59, Dorier, Matthieu <mdorier at anl.gov> a écrit :

> Hi,
>
>
> How do I make a variable visible in the ccmake tool?
>
> For example I would like the user to be able to edit BOOST_ROOT when
> calling ccmake, how can I do that?
>
>
> Right now all I see when first running ccmake is "EMPTY_CACHE", and when
> typing "c" to configure (which fails because some variables aren't properly
> set) then "e" to exit, I see the variables I have defined with "option",
> and I can toggle those, but I don't see other variables. I have tried the
> following:
>
>
> if(NOT DEFINED BOOST_ROOT)
>   set(BOOST_ROOT "/usr" CACHE PATH "Root of the Boost installation")
> endif(NOT DEFINED BOOST_ROOT)
>
>
> But I still don't see it in the list of variables.
>

CACHE variables are "Advanced Variables" which are not displayed unless you
toggle display advanced var in either ccmake or cmake-gui.
In ccmake you have to hit 't' in order to see advanced variables.


>
> Additionally, is there a way to have set of variables (namely the options,
> as well as things like BOOST_ROOT, CMAKE_CXX_COMPILER, CMAKE_C_COMPILER)
> show up when first calling ccmake, instead of EMPTY_CACHE?
>

I don't know, CMAKE_<lang>_COMPILER is not meant to be set with cmake UI,
they ought to be set in a toolchain or outside.
As noted in CMakeForceCompiler module you should not force them, use
toolchain or env var before calling cmake* tool.


-- 
Eric
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://cmake.org/pipermail/cmake/attachments/20180928/70b47cf3/attachment.html>