FindVexCL.cmake script

[raedwulf]

I wrote a simple cmake script for finding the include headers - and it gets installed to /usr/share/vexcl/cmake/Modules.

Maybe useful for developers.

[ddemidov]

How will user find the findvexcl script?

Besides, the scripts only looks into standard include paths plus a user-defined path. Is this better than setting include_dirs manually?

[raedwulf]

It was intended for the user to copy it into their project - because there's no real standard way of finding it... unless we copy it into /usr/share/cmake/Modules (but I do not think this is recommended - I have only noticed one project doing this on my system).

This allows for some shortcuts once you have FindVexCL.cmake in your module path:
For example:

find_package(VexCL REQUIRED) # automatically ensures that the headers must be included or else the build fails
######
find_package(VexCL)
if(VEXCL_FOUND) # this is automatically set after find_package
     # Do something if VexCL is found
endif()

These sort of checks need to be done manually otherwise - I don't know if this would best live in VexCL, but I find it generally useful.

[neapel]

When VexCL is installed through the CMake install target, the installation path could be hardcoded into FindVexCL.cmake using the configure_file command.

[ddemidov]

I think the intention is to copy the FindVexCL.cmake into ones project, same as we do with FindOpenCL.cmake. Hardcoded path would not help here.

[ddemidov]

For the same reason I am not sure if FindVexCL.cmake should be installed with the rest of the files.

[raedwulf]

I agree, yes. Thanks!

[raedwulf]

I guess it doesn't have to be installed - but it is in /usr/share/vexcl - where the examples live as well. Perhaps add a CMakeLists option to disable it?

[ddemidov]

Lets keep it with the examples then