Windows fixes.

embed/build.sh

@@ -13,4 +13,4 @@ zig cc --target=wasm32-wasi -flto -g0 -Os \
 	-mbulk-memory -mreference-types \
 	-mnontrapping-fptoint -msign-ext \
 	-D_HAVE_SQLITE_CONFIG_H \
-	$(awk '{print "-Wl,--export="$0}' ../sqlite3/exports.txt)
+	$(awk '{print "-Wl,--export="$0}' exports.txt)

embed/exports.txt

@@ -0,0 +1,49 @@
+free
+malloc
+malloc_destructor
+sqlite3_errcode
+sqlite3_errstr
+sqlite3_errmsg
+sqlite3_error_offset
+sqlite3_open_v2
+sqlite3_close
+sqlite3_close_v2
+sqlite3_prepare_v3
+sqlite3_finalize
+sqlite3_reset
+sqlite3_step
+sqlite3_exec
+sqlite3_clear_bindings
+sqlite3_bind_parameter_count
+sqlite3_bind_parameter_index
+sqlite3_bind_parameter_name
+sqlite3_bind_null
+sqlite3_bind_int64
+sqlite3_bind_double
+sqlite3_bind_text64
+sqlite3_bind_blob64
+sqlite3_bind_zeroblob64
+sqlite3_column_count
+sqlite3_column_name
+sqlite3_column_type
+sqlite3_column_int64
+sqlite3_column_double
+sqlite3_column_text
+sqlite3_column_blob
+sqlite3_column_bytes
+sqlite3_blob_open
+sqlite3_blob_close
+sqlite3_blob_bytes
+sqlite3_blob_read
+sqlite3_blob_write
+sqlite3_blob_reopen
+sqlite3_get_autocommit
+sqlite3_last_insert_rowid
+sqlite3_changes64
+sqlite3_unlock_notify
+sqlite3_backup_init
+sqlite3_backup_step
+sqlite3_backup_finish
+sqlite3_backup_remaining
+sqlite3_backup_pagecount
+sqlite3_interrupt_offset

embed/init.go

@@ -5,6 +5,9 @@
 //
 //	import _ "github.com/ncruces/go-sqlite3/embed"
 //
+// The following optional features are compiled in:
+// math functions, JSON, FTS3/4/5, R*Tree, GeoPoly.
+//
 // You can obtain this build of SQLite from:
 // https://github.com/ncruces/go-sqlite3/tree/main/embed
 package embed