PR #10 added a configure-time FATAL_ERROR for RocksDB < 7.4.0 because
the v5.9.24 daemon on DNS2 was built against librocksdb 6.11 and can't
read smsgDB SST files written by newer RocksDB (XXH3 per-block
checksum). The check worked — but it immediately failed CI, because
GitHub's ubuntu-22.04 runners also ship librocksdb-dev 6.11.4.
This is the same drift class the original patch was meant to prevent.
Fix: build RocksDB from source in CI, pinned to 8.9.1 (matching DNS2's
system version). Add scripts/ci/build-rocksdb.sh as a reusable helper
and call it from each of the four Linux jobs (test-linux-unit,
test-linux-sanitizers, build-linux-daemon, build-linux-qt). Drop
librocksdb-dev from the apt-get install (otherwise find_library would
pick up /usr/lib/librocksdb.so.6.11.4 first) and add libsnappy-dev /
libzstd-dev / liblz4-dev (compression libs RocksDB optionally links
against).
MacOS was already passing — Homebrew's rocksdb is current. Windows
was already passing — MSYS2's mingw-w64-rocksdb is at 9.x.
Also fix a cosmetic CMake bug: the version-detect function was setting
RocksDB_VERSION with PARENT_SCOPE only, so the 'Detected RocksDB
version from version.h:' message printed an empty value. Set the local
variable too so the STATUS message reflects the real value.
Krystie
91453deb46