Enable support for Apache Arrow Allow using blosc compression via dev-libs/c-blosc2 Build benchmark programs Atomic counting for memory alloc count Use futex Enable JSON processing using dev-libs/rapidjson Enable dev-libs/libevent used for suggestion Use app-text/mecab for morphological analysis Enable dev-libs/msgpack used for suggestion Use nfkc based utf8 normalization Enable document generation by app-misc/sphinx Enable stemming token filter using dev-libs/snowball-stemmer Build groonga-suggest-learner to learn suggest result from groonga-suggest-httpd or query logs Build for detecting race conditions Enable drilldown by hashed key using dev-libs/xxhash Enable net-libs/zeromq used for suggestion groonga/groonga