OneDPL: add versions 2021.6.1 & 2021.7.0

[jhabermas]

Specify library name and version: OneDPL/2021.7.0

This PR adds two of the latest versions of OneDPL to the recipe, which allow integration of latest OneTBB and fix C++20 compilation errors.

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• I've read the guidelines for contributing.
• I've followed the PEP8 style guides for Python code in the recipes.
• I've used the latest Conan client version.
• I've tried at least one configuration locally with the conan-center hook activated.

[CLAassistant]

All committers have signed the CLA.

[uilianries]

@jhabermas I see both recipes are pretty similar. Why not combine both on same folder (all)?

[jhabermas]

@uilianries As the old recipe has not been maintained since creation I thought it may be easier to just create a new one. The OneDPL project has changed in terms of folders/files layout, but it is possible to merge the two if you think that would be better.

[jgsogo]

Yes, please, merge them. In the long term it is easier to maintain just one conanfile.py.... and IMHO merging these two recipes shouldn't result in something too complex. Thanks!

[jhabermas]

@jgsogo How would you suggest dealing with different include file structure and namespaces, i.e. <pstl/execution> in 2020x vs <oneapi/dpl/execution> in 2021.x, in test packages?

[jgsogo]

There are several options, but I would just go with the most straightforward one: duplicate the main.cpp file and use a different one for each version (like main.2020x.cpp and main.2021x.cpp, then:

test_package/conanfile.py

def build(self):
   ...
   cmake.definitions["VERSION"] = "2020x"/"2021x"

and the CMakeLists.txt with something like:

add_executable(${PROJECT_NAME} main.${VERSION}.cpp)

But any approach will probably be ok.

[jgsogo]

Looks good, but now linter errors need to be fixed before merging:

I hope the help on the linked docs page is enough. If not, please let me know and I can submit a PR with the required changes to your branch.

Thanks!

[conan-center-bot]

All green in build 6 (212526919b8073fa9e4627d9615bd99237ffee48):

• onedpl/20200330@:
  All packages built successfully! (All logs)

• onedpl/2021.7.0@:
  All packages built successfully! (All logs)

• onedpl/2021.6.1@:
  All packages built successfully! (All logs)

[jgsogo]

Thanks for taking care of linter errors! 🙌