Ceph » RADOS

void DumpSupportInfo(Logger* logger) {
  ROCKS_LOG_HEADER(logger, "Compression algorithms supported:");
  for (auto& compression : OptionsHelper::compression_type_string_map) {
    if (compression.second != kNoCompression &&
        compression.second != kDisableCompressionOption) {
      ROCKS_LOG_HEADER(logger, "\t%s supported: %d", compression.first.c_str(),
                       CompressionTypeSupported(compression.second));
    }
  }
  ROCKS_LOG_HEADER(logger, "Fast CRC32 supported: %s",
                   crc32c::IsFastCrc32Supported().c_str());
} 

inline bool CompressionTypeSupported(CompressionType compression_type) {
  switch (compression_type) {
    case kNoCompression:
      return true;
    case kSnappyCompression:
      return Snappy_Supported();
    case kZlibCompression:
      return Zlib_Supported();
    case kBZip2Compression:
      return BZip2_Supported();
    case kLZ4Compression:
      return LZ4_Supported();
    case kLZ4HCCompression:
      return LZ4_Supported();
    case kXpressCompression:
      return XPRESS_Supported();
    case kZSTDNotFinalCompression:
      return ZSTDNotFinal_Supported();
    case kZSTD:
      return ZSTD_Supported();
    default:
      assert(false);
      return false;
  }   
}

inline bool Snappy_Supported() {
#ifdef SNAPPY
  return true;
#else
  return false;
#endif
}

It looks that the macros SNAPPY, ZLIB, ... are undefined on Debian. Need to check why.

https://github.com/ceph/ceph/pull/22181