Only fetch XTensor if needed

Since https://gitlab.com/aroffringa/aocommon/-/merge_requests/195, FetchXTensor.cmake includes add_compile_definitions directives which should be executed at the root of a repository.

Projects using schaapcommon and XTensor should thus include FetchXtensor.cmake themselves instead of relying on schaapcommon for including FetchXTensor.cmake.

DP3!1372 (merged) tests this schaapcommon branch with DP3. https://gitlab.com/aroffringa/wsclean/-/merge_requests/781 tests this schaapcommon branch with WSClean.

added 5 commits

• 23e8038f...88a89abc - 4 commits from branch master
• 5af65900 - Only fetch XTensor if not already fetched

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marked this merge request as ready

changed title from Draft: Disable fetching XTensor when included to Only fetch XTensor if needed

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assigned to @mnijhuis-tos

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requested review from @dijkema

enabled an automatic merge when all merge checks for 5af65900 pass

added 1 commit

• 038c768a - Update comment before fetching xtensor

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added 2 commits

• 0b311a4f - Merge if(SCHAAPCOMMON_MASTER_PROJECT) sections; Remove install
• 847a67e7 - Use CLANG_TIDY_FIXES in cmake and artifacts

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resolved all threads

added 1 commit

• a9b799da - Remove generator expr for SCHAAPCOMMON_MASTER_PROJECT

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approved this merge request

merged

mentioned in commit 2bb964df