only build with lmdb on linux.

lmdb.go

@@ -0,0 +1,43 @@
+//go:build linux && !riscv64 && !arm64
+
+package main
+
+import (
+	"os"
+	"path/filepath"
+
+	"fiatjaf.com/nostr/eventstore/lmdb"
+	"fiatjaf.com/nostr/eventstore/nullstore"
+	"fiatjaf.com/nostr/sdk"
+	"fiatjaf.com/nostr/sdk/hints/lmdbh"
+	lmdbkv "fiatjaf.com/nostr/sdk/kvstore/lmdb"
+	"github.com/urfave/cli/v3"
+)
+
+func setupLocalDatabases(c *cli.Command, sys *sdk.System) {
+	configPath := c.String("config-path")
+	if configPath != "" {
+		hintsPath := filepath.Join(configPath, "outbox/hints")
+		os.MkdirAll(hintsPath, 0755)
+		_, err := lmdbh.NewLMDBHints(hintsPath)
+		if err != nil {
+			log("failed to create lmdb hints db at '%s': %s\n", hintsPath, err)
+		}
+
+		eventsPath := filepath.Join(configPath, "events")
+		os.MkdirAll(eventsPath, 0755)
+		sys.Store = &lmdb.LMDBBackend{Path: eventsPath}
+		if err := sys.Store.Init(); err != nil {
+			log("failed to create boltdb events db at '%s': %s\n", eventsPath, err)
+			sys.Store = &nullstore.NullStore{}
+		}
+
+		kvPath := filepath.Join(configPath, "kvstore")
+		os.MkdirAll(kvPath, 0755)
+		if kv, err := lmdbkv.NewStore(kvPath); err != nil {
+			log("failed to create boltdb kvstore db at '%s': %s\n", kvPath, err)
+		} else {
+			sys.KVStore = kv
+		}
+	}
+}