Okay, we’re all set. I’ve pushed my work to https://salsa.debian.org/debian/abseil, and both command-line linking and CMake integration work. Comments and suggestions are welcome – if I don’t hear anything in the next day or two, I’ll go ahead and upload to NEW.
I had to disable the Abseil testsuite to get CMake integration to work. The CMake files that Abseil installs are autogenerated, and if you enable the testsuite, the generator adds a bunch of googletest dependencies. This is unfortunate, and I’ll file a bug with upstream to try to get it fixed. In the meantime, I’ve manually verified that the tests pass. Benjamin