[PROJ] Support request for using PROJ in CMake projects

[Even Rouault]

Jean,


> Thank you very much for your quick reply.
>
> Yes I’ve installed PROJ using miniconda, as I already had it installed 
> on my computer, it was easier.
>
> But unfortunately, I got the same error message.
>
> And I am a bit annoyed having to install PROJ, I just want to use some 
> features of PROJ in our opensource project.
>
> I have QGIS installed on my computer, so PROJ is already installed.
>
> Moreover, we’re using appveyor for our CI, and PROJ does not seem to 
> be pre-installed on appveyor windows images :
>
> https://www.appveyor.com/docs/windows-images-software/
>
Yes, too specialized to be on generic purposes CI images
>
> Does it mean we’ll have to install PROJ on appveyor machine for every 
> build of the CI ?
>
yes
>
> If you have an example of an opensource project using PROJ with CMake 
> and CI, I’m interesting to have its reference.
>
GDAL, QGIS, etc.

Use a package manager as suggested to install PROJ on your CI: vcpkg, 
conda, etc.

For example 
https://github.com/OSGeo/gdal/blob/master/.github/workflows/cmake_builds.yml#L425

Or potentially use 
https://cmake.org/cmake/help/latest/module/ExternalProject.html, but 
you'll likely have the same issues with PROJ's dependencies: curl, libtiff

Even

-- 
http://www.spatialys.com
My software is free, but my time generally not.
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