--- /dev/null
+++ BUILD.bazel
@@ -0,0 +1,131 @@
+load("@rules_cc//cc:cc_library.bzl", "cc_library")
+load("@rules_cc//cc:cc_test.bzl", "cc_test")
+
+COPTS = select({
+    "@platforms//os:windows": ["/std:c++17", "/D_WIN32_WINNT=0x0602"],
+    "//conditions:default": ["-std=c++17"],
+})
+
+cc_library(
+    name = "public_headers",
+    hdrs = [
+        "include/marisa.h",
+        "include/marisa/agent.h",
+        "include/marisa/base.h",
+        "include/marisa/iostream.h",
+        "include/marisa/key.h",
+        "include/marisa/keyset.h",
+        "include/marisa/query.h",
+        "include/marisa/stdio.h",
+        "include/marisa/trie.h",
+    ],
+    strip_include_prefix = "include",
+)
+
+cc_library(
+    name = "internal_headers",
+    hdrs = [
+        "lib/marisa/grimoire/algorithm/sort.h",
+        "lib/marisa/grimoire/intrin.h",
+        "lib/marisa/grimoire/io.h",
+        "lib/marisa/grimoire/io/mapper.h",
+        "lib/marisa/grimoire/io/reader.h",
+        "lib/marisa/grimoire/io/writer.h",
+        "lib/marisa/grimoire/trie.h",
+        "lib/marisa/grimoire/trie/cache.h",
+        "lib/marisa/grimoire/trie/config.h",
+        "lib/marisa/grimoire/trie/entry.h",
+        "lib/marisa/grimoire/trie/header.h",
+        "lib/marisa/grimoire/trie/history.h",
+        "lib/marisa/grimoire/trie/key.h",
+        "lib/marisa/grimoire/trie/louds-trie.h",
+        "lib/marisa/grimoire/trie/range.h",
+        "lib/marisa/grimoire/trie/state.h",
+        "lib/marisa/grimoire/trie/tail.h",
+        "lib/marisa/grimoire/vector.h",
+        "lib/marisa/grimoire/vector/bit-vector.h",
+        "lib/marisa/grimoire/vector/flat-vector.h",
+        "lib/marisa/grimoire/vector/pop-count.h",
+        "lib/marisa/grimoire/vector/rank-index.h",
+        "lib/marisa/grimoire/vector/vector.h",
+    ],
+    strip_include_prefix = "lib",
+)
+
+cc_library(
+    name = "marisa-trie",
+    srcs = [
+        "lib/marisa/agent.cc",
+        "lib/marisa/grimoire/io/mapper.cc",
+        "lib/marisa/grimoire/io/reader.cc",
+        "lib/marisa/grimoire/io/writer.cc",
+        "lib/marisa/grimoire/trie/louds-trie.cc",
+        "lib/marisa/grimoire/trie/tail.cc",
+        "lib/marisa/grimoire/vector/bit-vector.cc",
+        "lib/marisa/keyset.cc",
+        "lib/marisa/trie.cc",
+    ],
+    copts = COPTS,
+    visibility = ["//visibility:public"],
+    deps = [
+        ":internal_headers",
+        ":public_headers",
+    ],
+)
+
+cc_library(
+    name = "marisa-assert",
+    testonly = True,
+    hdrs = ["tests/marisa-assert.h"],
+    strip_include_prefix = "tests",
+)
+
+cc_test(
+    name = "base-test",
+    srcs = ["tests/base-test.cc"],
+    copts = COPTS,
+    deps = [
+        ":marisa-assert",
+        ":marisa-trie",
+    ],
+)
+
+cc_test(
+    name = "io-test",
+    srcs = ["tests/io-test.cc"],
+    copts = COPTS,
+    deps = [
+        ":marisa-assert",
+        ":marisa-trie",
+    ],
+)
+
+cc_test(
+    name = "marisa-test",
+    srcs = ["tests/marisa-test.cc"],
+    copts = COPTS,
+    deps = [
+        ":marisa-assert",
+        ":marisa-trie",
+    ],
+)
+
+cc_test(
+    name = "trie-test",
+    srcs = ["tests/trie-test.cc"],
+    copts = COPTS,
+    deps = [
+        ":marisa-assert",
+        ":marisa-trie",
+    ],
+)
+
+# vector-test is not added because of an existing failure.
+# cc_test(
+#     name = "vector-test",
+#     srcs = ["tests/vector-test.cc"],
+#     deps = [
+#         ":marisa-assert",
+#         ":marisa-trie",
+#     ],
+# )