[PROJ] cmake find_package() fails to find PROJ6 installed with MacPorts

[Even Rouault]

Tom,

You should try to use a more recent version than PROJ 6.x (not sure what 
"proj6" corresponds to in MacPorts). I believe PROJ Config support was 
only added in PROJ > 6, or can only be relied upon in those later versions

Even

Le 01/06/2022 à 20:29, Tom O'Reilly a écrit :
> I'm running cmake 3.22.4 on MacOS 11.6.
> I installed proj6 with "sudo port proj6" which looks to bethe 
> proj-recommended way to install with MacPorts 
> <https://proj.org/install.html>. I see the proj6 include/ and lib/ 
> subdirectories in /opt/local/lib/proj6, and set PROJ6_ROOT to 
> /opt/local/lib/proj6 accordingly in my applications's CMakeLists.txt.
>
> But CmakeLists.txt is unable to find proj on the system. The proj page 
> also says <https://proj.org/development/cmake.html>:
>
>
> The recommended way to use the PROJ library in a CMake project is to 
> link to the imported library target PROJ::projprovide by the CMake 
> configuration which comes with the library. Typical usage is:
>
>
> find_package(PROJ CONFIG REQUIRED)
>
>
> However find_package() cannot find PROJ or PROJ6 on my system - 
> find_package() exits with this message:
>
> CMake Error at CMakeLists.txt:95 (find_package):
>
>   Could not find a package configuration file provided by "PROJ6" with 
> any of
>
>   the following names:
>
>     PROJ6Config.cmake
>
>     proj6-config.cmake
>
>
> Moreover I do not see any files named "proj*.cmake" in /opt/local - 
> somehow installing proj6 with MacPorts did not include this package 
> information? What am I doing wrong?
>
> Any help much appreciated!
>
>
> Thanks
>
> Tom
>
>
> --------------------------------------------------
> Thomas C. O'Reilly
> Monterey Bay Aquarium Research Institute
> 7700 Sandholdt Road
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>
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>
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>
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