diff --git a/BUILD b/BUILD
new file mode 100644
index 0000000..18dad30
--- /dev/null
+++ b/BUILD
@@ -0,0 +1,116 @@
+# gemma.cpp is a lightweight, standalone C++ inference engine for the Gemma
+# foundation models from Google.
+
+load("@rules_license//rules:license.bzl", "license")
+
+package(
+    default_applicable_licenses = ["//:license"],
+    default_visibility = ["//visibility:public"],
+)
+
+license(
+    name = "license",
+    package_name = "gemma_cpp",
+)
+
+# Dual-licensed Apache 2 and 3-clause BSD.
+licenses(["notice"])
+
+exports_files(["LICENSE"])
+
+cc_library(
+    name = "transformer_ops",
+    hdrs = [
+        "ops.h",
+    ],
+    deps = [
+        "//compression:compress",
+        # copybara:import_next_line:hwy
+        "//:algo",
+        # copybara:import_next_line:hwy
+        "//:dot",
+        # copybara:import_next_line:hwy
+        "//:hwy",
+        # copybara:import_next_line:hwy
+        "//:math",
+        # copybara:import_next_line:hwy
+        "//:matvec",
+        # copybara:import_next_line:hwy
+        "//:profiler",
+        # copybara:import_next_line:hwy
+        "//:thread_pool",
+        "//hwy/contrib/sort:vqsort",
+    ],
+)
+
+cc_library(
+    name = "args",
+    hdrs = [
+        "util/args.h",
+    ],
+    deps = [
+        # copybara:import_next_line:hwy
+        "//:hwy",
+    ],
+)
+
+cc_library(
+    name = "app",
+    hdrs = [
+        "util/app.h",
+    ],
+    deps = [
+        ":args",
+        # copybara:import_next_line:hwy
+        "//:hwy",
+    ],
+)
+
+cc_library(
+    name = "gemma_lib",
+    srcs = [
+        "gemma.cc",
+    ],
+    hdrs = [
+        "configs.h",
+        "gemma.h",
+    ],
+    deps = [
+        ":args",
+        ":transformer_ops",
+        "//base",
+        "//compression:compress",
+        # copybara:import_next_line:hwy
+        "//:hwy",
+        # copybara:import_next_line:hwy
+        "//:matvec",
+        # copybara:import_next_line:hwy
+        "//:nanobenchmark",  # timer
+        # copybara:import_next_line:hwy
+        "//:profiler",
+        # copybara:import_next_line:hwy
+        "//:thread_pool",
+        ":sentencepiece_processor",
+    ],
+)
+
+cc_binary(
+    name = "gemma",
+    srcs = [
+        "run.cc",
+    ],
+    deps = [
+        ":app",
+        ":args",
+        ":gemma_lib",
+        "//compression:compress",
+        # copybara:import_next_line:hwy
+        "//:hwy",
+        # copybara:import_next_line:hwy
+        "//:nanobenchmark",
+        # copybara:import_next_line:hwy
+        "//:profiler",
+        # copybara:import_next_line:hwy
+        "//:thread_pool",
+    ],
+)
diff --git a/compression/BUILD b/compression/BUILD
new file mode 100644
index 0000000..f6f9420
--- /dev/null
+++ b/compression/BUILD
@@ -0,0 +1,161 @@
+# Weight compression, I/O and analysis
+
+package(
+    default_applicable_licenses = ["//third_party/gemma_cpp:license"],
+    default_visibility = [
+        "//learning/gemini/prod/contrib/gemini_cpp:__subpackages__",
+        "//third_party/gemma_cpp:__subpackages__",
+    ],
+)
+
+cc_library(
+    name = "blob_store",
+    srcs = [
+        "blob_store.cc",
+    ],
+    hdrs = [
+        "blob_store.h",
+    ],
+    deps = [
+        # copybara:import_next_line:hwy
+        "//:hwy",
+        # copybara:import_next_line:hwy
+        "//:thread_pool",
+    ],
+)
+
+cc_library(
+    name = "stats",
+    srcs = [
+        "stats.cc",
+    ],
+    hdrs = [
+        "distortion.h",
+        "stats.h",
+    ],
+    deps = [
+        # copybara:import_next_line:hwy
+        "//:hwy",
+    ],
+)
+
+cc_library(
+    name = "sfp",
+    hdrs = [
+        "sfp.h",
+    ],
+    textual_hdrs = [
+        "sfp-inl.h",
+    ],
+    deps = [
+        # copybara:import_next_line:hwy
+        "//:hwy",
+    ],
+)
+
+cc_test(
+    name = "sfp_test",
+    size = "small",
+    srcs = ["sfp_test.cc"],
+    features = ["fully_static_link"],
+    linkstatic = True,
+    local_defines = ["HWY_IS_TEST"],
+    # for test_suite.
+    tags = ["hwy_ops_test"],
+    deps = [
+        ":sfp",
+        ":stats",
+        "//testing/base/public:gunit_main_no_google3",
+        # copybara:import_next_line:hwy
+        "//:hwy",
+        # copybara:import_next_line:hwy
+        "//:hwy_test_util",
+        # copybara:import_next_line:hwy
+        "//:nanobenchmark",
+        # copybara:import_next_line:hwy
+        "//:thread_pool",
+    ],
+)
+
+cc_library(
+    name = "nuq",
+    hdrs = [
+        "nuq.h",
+    ],
+    textual_hdrs = [
+        "nuq-inl.h",
+    ],
+    deps = [
+        ":sfp",
+        # copybara:import_next_line:hwy
+        "//:hwy",
+        "//third_party/highway/hwy/contrib/sort:vqsort",
+    ],
+)
+
+cc_test(
+    name = "nuq_test",
+    size = "small",
+    srcs = ["nuq_test.cc"],
+    features = ["fully_static_link"],
+    linkstatic = True,
+    local_defines = ["HWY_IS_TEST"],
+    # for test_suite.
+    tags = ["hwy_ops_test"],
+    deps = [
+        ":nuq",
+        ":sfp",
+        ":stats",
+        "//testing/base/public:gunit_main_no_google3",
+        # copybara:import_next_line:hwy
+        "//:hwy",
+        # copybara:import_next_line:hwy
+        "//:hwy_test_util",
+        # copybara:import_next_line:hwy
+        "//:nanobenchmark",
+    ],
+)
+
+cc_library(
+    name = "compress",
+    hdrs = [
+        "compress.h",
+        "nuq.h",
+        "sfp.h",
+    ],
+    textual_hdrs = [
+        "compress-inl.h",
+    ],
+    deps = [
+        ":blob_store",
+        ":nuq",
+        ":sfp",
+        ":stats",
+        # copybara:import_next_line:hwy
+        "//:dot",
+        # copybara:import_next_line:hwy
+        "//:hwy",
+        # copybara:import_next_line:hwy
+        "//:thread_pool",
+    ],
+)
+
+# For internal experimentation
+cc_library(
+    name = "analyze",
+    textual_hdrs = [
+        "analyze.h",
+    ],
+    deps = [
+        ":nuq",
+        ":sfp",
+        ":stats",
+        # copybara:import_next_line:hwy
+        "//:hwy",
+        # copybara:import_next_line:hwy
+        "//:nanobenchmark",  # timer
+        # copybara:import_next_line:hwy
+        "//:thread_pool",
+        "//third_party/highway/hwy/contrib/sort:vqsort",
+    ],
+)
diff --git a/gemma.cc b/gemma.cc
index 70777ac..2a51b34 100644
--- a/gemma.cc
+++ b/gemma.cc
@@ -60,8 +60,7 @@
 #include "hwy/aligned_allocator.h"
 #include "hwy/base.h"
 #include "hwy/contrib/thread_pool/thread_pool.h"
-// copybara:import_next_line:sentencepiece
-#include "src/sentencepiece_processor.h"
+#include "sentencepiece_processor.h"
 
 namespace gcpp {
 
diff --git a/gemma.h b/gemma.h
index 5dc9f62..1c9caf8 100644
--- a/gemma.h
+++ b/gemma.h
@@ -33,8 +33,7 @@
 #include "hwy/aligned_allocator.h"
 #include "hwy/base.h"  // hwy::bfloat16_t
 #include "hwy/contrib/thread_pool/thread_pool.h"
-// copybara:import_next_line:sentencepiece
-#include "src/sentencepiece_processor.h"
+#include "sentencepiece_processor.h"
 
 namespace gcpp {