Manage CMake finding of xtensor
Closed this issue · 3 comments
garth-wells commented
At the moment we're using the CMake feature FetchContent
to get the header-only xtensor dependencies. It's unclear how this might work if the dependencies are already available. We should configure so that installed version can be used if available.
drew-parsons commented
I guess you can run
find_package(xtl REQUIRED)
find_package(xtensor REQUIRED)
find_package(xtensor-blas REQUIRED)
first, and then proceed to the FetchContent_Declare
blocks conditionally, based on the values of xtl_FOUND
, xtensor_FOUND
, etc.
drew-parsons commented
This patch seems to cover it, for instance.
use_system_xtl_xtensor.txt
drew-parsons commented
I've placed the patch (with improvements) into PR #163 .
cmake 3.19 allows a version range to be specified, but not all systems have it installed so I made that conditional.