version_generator.py: make build reproducible

steve-o / openpgm

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version_generator.py: make build reproducible #58

Closed bluca closed 5 years ago

bluca commented 5 years ago

If SOURCE_DATE_EPOCH is defined then the user is most likely interested in building the library in a reproducible way. So in that case use fixed "BuildSystem" and "BuildMachine" strings instead of the operating system and architecture.