[FEA] Add package manager support

[cliffburdick]

we should look into adding support for both Conan and vxpkg package managers to make it easier for people not wanting to deal with the normal build process

[codingwithmagga]

Hi @cliffburdick,

I can work on this issue.

[codingwithmagga]

Hi @cliffburdick,

I finished the conan integration and local tests using the example folder were successful. Currently there is one remaining question if the conan files are directly added to the conan center or if they are added to this repository to test them first.

The vcpkg integration is a bit more difficult. Per default vcpkg sets the option -DFETCHCONTENT_FULLY_DISCONNECTED=ON which disables all FetchContent calls. Since the rapids-cmake integration seems to rely on FetchContent and is itself used via FetchContent this leads to an error during the package creation:

-- CPM: Adding package CCCL@3.3.0 (09094af)
CMake Warning (dev) at /home/mschoos/Code/vcpkg/downloads/tools/cmake-4.3.2-linux/cmake-4.3.2-linux-x86_64/share/cmake-4.3/Modules/FetchContent.cmake:1966 (message):
  Calling FetchContent_Populate(CCCL) is deprecated, call
  FetchContent_MakeAvailable(CCCL) instead.  Policy CMP0169 can be set to OLD
  to allow FetchContent_Populate(CCCL) to be called directly for now, but the
  ability to call it with declared details will be removed completely in a
  future version.
Call Stack (most recent call first):
  /home/mschoos/Code/vcpkg/buildtrees/matx/x64-linux-dbg/cmake/CPM_0.40.0.cmake:1074 (FetchContent_Populate)
  /home/mschoos/Code/vcpkg/buildtrees/matx/x64-linux-dbg/cmake/CPM_0.40.0.cmake:868 (cpm_fetch_package)
  /home/mschoos/Code/vcpkg/buildtrees/matx/x64-linux-dbg/cmake/CPM_0.40.0.cmake:298 (CPMAddPackage)
  cmake/rapids-cmake/rapids-cmake/cpm/find.cmake:189 (CPMFindPackage)
  cmake/rapids-cmake/rapids-cmake/cpm/cccl.cmake:81 (rapids_cpm_find)
  CMakeLists.txt:147 (rapids_cpm_cccl)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning at /home/mschoos/Code/vcpkg/downloads/tools/cmake-4.3.2-linux/cmake-4.3.2-linux-x86_64/share/cmake-4.3/Modules/FetchContent.cmake:2124 (message):
  FETCHCONTENT_FULLY_DISCONNECTED is set to true, which requires the source
  directory for dependency CCCL to already be populated.  This generally
  means it must not be set to true the first time CMake is run in a build
  directory.  The following source directory should already be populated, but
  it doesn't exist:

    /home/mschoos/Code/vcpkg/buildtrees/matx/x64-linux-dbg/_deps/cccl-src

  Policy CMP0170 controls enforcement of this requirement.
Call Stack (most recent call first):
  /home/mschoos/Code/vcpkg/downloads/tools/cmake-4.3.2-linux/cmake-4.3.2-linux-x86_64/share/cmake-4.3/Modules/FetchContent.cmake:1991:EVAL:1 (__FetchContent_Populate)
  /home/mschoos/Code/vcpkg/downloads/tools/cmake-4.3.2-linux/cmake-4.3.2-linux-x86_64/share/cmake-4.3/Modules/FetchContent.cmake:1991 (cmake_language)
  /home/mschoos/Code/vcpkg/buildtrees/matx/x64-linux-dbg/cmake/CPM_0.40.0.cmake:1074 (FetchContent_Populate)
  /home/mschoos/Code/vcpkg/buildtrees/matx/x64-linux-dbg/cmake/CPM_0.40.0.cmake:868 (cpm_fetch_package)
  /home/mschoos/Code/vcpkg/buildtrees/matx/x64-linux-dbg/cmake/CPM_0.40.0.cmake:298 (CPMAddPackage)
  cmake/rapids-cmake/rapids-cmake/cpm/find.cmake:189 (CPMFindPackage)
  cmake/rapids-cmake/rapids-cmake/cpm/cccl.cmake:81 (rapids_cpm_find)
  CMakeLists.txt:147 (rapids_cpm_cccl)


CMake Error at cmake/rapids-cmake/rapids-cmake/cpm/cccl.cmake:132 (include):
  include could not find requested file:

    /home/mschoos/Code/vcpkg/buildtrees/matx/x64-linux-dbg/_deps/cccl-src/cmake/install/cub.cmake
Call Stack (most recent call first):
  CMakeLists.txt:147 (rapids_cpm_cccl)

I'm not sure what would be the best way to solve that issue. Do you know other libraries which rely on cccl etc. and use vcpkg? Maybe I can look into that.

One solution may be to download all dependencies explicitly in the vcpkg file. For example they do that in the library curve-coco.

One workaround is to set -DFETCHCONTENT_FULLY_DISCONNECTED=OFF. This works locally for me and creates the vcpkg matx. There are just two minor warnings to be fixed. But I assume using this option disallows uploading the vcpkg files to the official vcpkg repo.

[cliffburdick]

Hi @codingwithmagga , let's skip vcpkg and only do Conan for now. Would that make this easier?

[codingwithmagga]

@cliffburdick

Yes that make things a lot easier.

I will create a pull request containing the conan files so you can review and test them.
Later they can be added to the conan center s.t. they can be integrated in other projects without cloning this repo.

I still need to update README and documentation.
I can do that next week.