{"action":"created","comment":{"url":"https://api.github.com/repos/cockroachdb/cockroach/pulls/comments/25310362","id":25310362,"diff_hunk":"@@ -0,0 +1,15 @@\n+package engine\n+\n+import (\n+\t// Link against the protobuf and rocksdb libaries. This is","path":"storage/engine/cgo_flags.go","position":4,"original_position":4,"commit_id":"35e581ffad7c89294fbf5f8491af0d40bc9cf41b","original_commit_id":"35e581ffad7c89294fbf5f8491af0d40bc9cf41b","user":{"login":"petermattis","id":6201335,"avatar_url":"https://avatars.githubusercontent.com/u/6201335?v=3","gravatar_id":"","url":"https://api.github.com/users/petermattis","html_url":"https://github.com/petermattis","followers_url":"https://api.github.com/users/petermattis/followers","following_url":"https://api.github.com/users/petermattis/following{/other_user}","gists_url":"https://api.github.com/users/petermattis/gists{/gist_id}","starred_url":"https://api.github.com/users/petermattis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/petermattis/subscriptions","organizations_url":"https://api.github.com/users/petermattis/orgs","repos_url":"https://api.github.com/users/petermattis/repos","events_url":"https://api.github.com/users/petermattis/events{/privacy}","received_events_url":"https://api.github.com/users/petermattis/received_events","type":"User","site_admin":false},"body":"Done.","created_at":"2015-02-25T01:11:43Z","updated_at":"2015-02-25T01:11:43Z","html_url":"https://github.com/cockroachdb/cockroach/pull/354#discussion_r25310362","pull_request_url":"https://api.github.com/repos/cockroachdb/cockroach/pulls/354","_links":{"self":{"href":"https://api.github.com/repos/cockroachdb/cockroach/pulls/comments/25310362"},"html":{"href":"https://github.com/cockroachdb/cockroach/pull/354#discussion_r25310362"},"pull_request":{"href":"https://api.github.com/repos/cockroachdb/cockroach/pulls/354"}}},"pull_request":{"url":"https://api.github.com/repos/cockroachdb/cockroach/pulls/354","id":29941463,"html_url":"https://github.com/cockroachdb/cockroach/pull/354","diff_url":"https://github.com/cockroachdb/cockroach/pull/354.diff","patch_url":"https://github.com/cockroachdb/cockroach/pull/354.patch","issue_url":"https://api.github.com/repos/cockroachdb/cockroach/issues/354","number":354,"state":"open","locked":false,"title":"Use cgo to compile protobuf and rocksdb.","user":{"login":"petermattis","id":6201335,"avatar_url":"https://avatars.githubusercontent.com/u/6201335?v=3","gravatar_id":"","url":"https://api.github.com/users/petermattis","html_url":"https://github.com/petermattis","followers_url":"https://api.github.com/users/petermattis/followers","following_url":"https://api.github.com/users/petermattis/following{/other_user}","gists_url":"https://api.github.com/users/petermattis/gists{/gist_id}","starred_url":"https://api.github.com/users/petermattis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/petermattis/subscriptions","organizations_url":"https://api.github.com/users/petermattis/orgs","repos_url":"https://api.github.com/users/petermattis/repos","events_url":"https://api.github.com/users/petermattis/events{/privacy}","received_events_url":"https://api.github.com/users/petermattis/received_events","type":"User","site_admin":false},"body":"This makes cockroach almost go-gettable (only the vendoring of etcd stands in the way).\r\n\r\nIntead of compiling protobuf and rocksdb explicitly, we use \"go build\" to build them by creating wrapper go packages for the C++ sources. See https://github.com/cockroachdb/c-protobuf and https://github.com/cockroachdb/c-rocksdb. This was initially an experiment to see if it was possible. Turns out it is, though there are caveats.\r\n\r\nI'm not at all set on this approach and it definitely has some downsides (e.g. duplicating the build systems of these dependent libraries). But the build work is straightforward and we should be bumping the version of rocksdb infrequently and protobuf very rarely. 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