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Re: kdesrc-build: cmake should take local (instead of system-wide) cmake modules




On Wed, May 9, 2018 at 9:28 AM, gregor.mi.sw <codestruct@xxxxxxxxxx> wrote:
>
>
> On 08.05.2018 23:15, Milian Wolff wrote:
>>
>> On Dienstag, 8. Mai 2018 22:40:39 CEST gregor.mi.sw wrote:
>>>
>>> Hello,
>>>
>>> I have a question regarding kdesrc-build and CMake.
>>>
>>> I setup the build environment variables and ran kdesrc-build and got a
>>> compiler error kinfocenter.
>>>
>>> I investigated
>>> /home/gregor/kde/src/build/kde/workspace/kinfocenter/CMakeCache.txt and
>>> found the following lines
>>>
>>>       //The directory containing a CMake configuration file for
>>> KF5Service.
>>>       KF5Service_DIR:PATH=/usr/lib64/cmake/KF5Service
>>>
>>>       //The directory containing a CMake configuration file for KF5Solid.
>>>       KF5Solid_DIR:PATH=/usr/lib64/cmake/KF5Solid
>>>
>>>       //The directory containing a CMake configuration file for
>>> KF5Wayland.
>>>       KF5Wayland_DIR:PATH=/usr/lib64/cmake/KF5Wayland
>>>
>>> The directories of the needed KF5 frameworks point to the system wide
>>> installed ones.
>>>
>>> I removed the system-wide devel package for solid (because it caused the
>>> compiler error) and ran kdesrc-build again:
>>>
>>>       //The directory containing a CMake configuration file for
>>> KF5Service.
>>>       KF5Service_DIR:PATH=/usr/lib64/cmake/KF5Service
>>>
>>>       //The directory containing a CMake configuration file for KF5Solid.
>>>       KF5Solid_DIR:PATH=/home/gregor/kde/usr/lib64/cmake/KF5Solid
>>>
>>>       //The directory containing a CMake configuration file for
>>> KF5Wayland.
>>>       KF5Wayland_DIR:PATH=/usr/lib64/cmake/KF5Wayland
>>>
>>> Now it shows the correct (local) path for solid (but not the other ones).
>>> Is
>>> there an environment variable or something I have to set to tell Cmake to
>>> always look for local modules first?
>>
>>
>> Try CMAKE_PREFIX_PATH. See e.g. this old blog post on the matter:
>>
>> https://blogs.kde.org/2008/12/12/how-get-cmake-find-what-you-want-it
>
>
> Thanks for the hint. The variable was already set:
>
> CMAKE_PREFIX_PATH=/home/gregor/kde/usr:
>
> In the blog post, it is said, that CMAKE_PREFIX_PATH is searched _first_. I
> find it strange that I had to uninstall the system-wide devel package in
> order to have cmake pick up the library in /home/gregor/kde/usr. And for the
> other libraries it still uses /usr. Any idea how to investigate this
> further?

If you have previously run CMake without setting CMAKE_PREFIX_PATH you
will need to remove your build directory first, otherwise it will
reuse modules it has already found.

>
> Gregor

Cheers,
Ben