FIX: Explicit bfs:path conversion to string.

Summary

Fixed the compiler and also a different linker issue.

Test Environment

Simply try to compile on a Mac with make conan.

Check List for the Author

• All automated tests pass
• Reference related Issues: #25 (closed)
• Up-to-date CHANGELOG.md
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there specifications? Are they satisfied?

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assigned to @daniel

marked the checklist item Reference related Issues: #25 (closed) as completed

requested review from @florian

mentioned in issue #25 (closed)

added 1 commit

• c786177b - DOC: Fixed wrong version.

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added 1 commit

• 8116b29c - DOC: More about version mismatches.

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marked the checklist item All automated tests pass as completed

marked the checklist item Annotations in code (Gitlab comments) as completed

marked the checklist item I understand the intent of this MR as completed

marked the checklist item All automated tests pass as completed

marked the checklist item Up-to-date CHANGELOG.md as completed

resolved all threads

marked the checklist item In-code documentation and comments are up-to-date. as completed

marked the checklist item Check: Are there specifications? Are they satisfied? as completed

Seems not to work on MacOS 10.14 Catalina, since conan's abseil wouldn't compile. I suggest we only support Big Sur for now.

mentioned in commit 2ce0e458

merged