diff --git a/au/BUILD.bazel b/au/BUILD.bazel
index 5843a97b..c5ca484d 100644
--- a/au/BUILD.bazel
+++ b/au/BUILD.bazel
@@ -70,6 +70,7 @@ cc_library(
         ":io",
         ":stdx",
         ":unit_of_measure",
+        "@com_google_googletest//:gtest",
     ],
 )
 
@@ -123,7 +124,6 @@ cc_test(
     name = "apply_magnitude_test",
     size = "small",
     srcs = ["apply_magnitude_test.cc"],
-    copts = ["-Iexternal/gtest/include"],
     deps = [
         ":apply_magnitude",
         ":testing",
diff --git a/au/CMakeLists.txt b/au/CMakeLists.txt
index 4e2cf053..7b237dc0 100644
--- a/au/CMakeLists.txt
+++ b/au/CMakeLists.txt
@@ -14,18 +14,492 @@
 
 include(../cmake/HeaderOnlyLibrary.cmake)
 
+#
+# Publicly exported targets
+#
+
+header_only_library(
+  NAME au
+  HEADERS
+    au.hh
+  DEPS
+    chrono_interop
+    constant
+    math
+  GTEST_SRCS
+    au_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+)
+
+header_only_library(
+  NAME chrono_interop
+  HEADERS
+    chrono_interop.hh
+  DEPS
+    quantity
+    units
+  GTEST_SRCS
+    chrono_interop_test.cc
+  GTEST_EXTRA_DEPS
+    prefix
+    testing
+)
+
+header_only_library(
+  NAME constant
+  HEADERS
+    constant.hh
+  DEPS
+    quantity
+    unit_of_measure
+    wrapper_operations
+  GTEST_SRCS
+    constant_test.cc
+  GTEST_EXTRA_DEPS
+    chrono_interop
+    testing
+    units
+)
+
+header_only_library(
+  NAME io
+  HEADERS
+    io.hh
+  DEPS
+    quantity
+    quantity_point
+    zero
+  GTEST_SRCS
+    io_test.cc
+  GTEST_EXTRA_DEPS
+    prefix
+)
+
+header_only_library(
+  NAME math
+  HEADERS
+    math.hh
+  DEPS
+    constant
+    quantity
+    quantity_point
+    units
+  GTEST_SRCS
+    math_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+)
+
+header_only_library(
+  NAME prefix
+  HEADERS
+    prefix.hh
+  DEPS
+    quantity
+    quantity_point
+    unit_of_measure
+    unit_symbol
+  GTEST_SRCS
+    prefix_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+)
+
+header_only_library(
+  NAME quantity
+  HEADERS
+    quantity.hh
+  DEPS
+    apply_magnitude
+    conversion_policy
+    operators
+    rep
+    unit_of_measure
+    zero
+  GTEST_SRCS
+    quantity_chrono_policy_correspondence_test.cc
+    quantity_test.cc
+  GTEST_EXTRA_DEPS
+    chrono_policy_validation
+    prefix
+    testing
+)
+
+header_only_library(
+  NAME quantity_point
+  HEADERS
+    quantity_point.hh
+  DEPS
+    quantity
+    stdx
+    utility
+  GTEST_SRCS
+    quantity_point_test.cc
+  GTEST_EXTRA_DEPS
+    prefix
+    testing
+)
+
+header_only_library(
+  NAME testing
+  HEADERS
+    testing.hh
+  DEPS
+    io
+    stdx
+    unit_of_measure
+    GTest::gmock
+  GTEST_SRCS
+    testing_test.cc
+)
+
+header_only_library(
+  NAME units
+  HEADERS
+    units/amperes.hh
+    units/bars.hh
+    units/becquerel.hh
+    units/bits.hh
+    units/bytes.hh
+    units/candelas.hh
+    units/celsius.hh
+    units/coulombs.hh
+    units/days.hh
+    units/degrees.hh
+    units/fahrenheit.hh
+    units/farads.hh
+    units/fathoms.hh
+    units/feet.hh
+    units/furlongs.hh
+    units/grams.hh
+    units/grays.hh
+    units/henries.hh
+    units/hertz.hh
+    units/hours.hh
+    units/inches.hh
+    units/joules.hh
+    units/katals.hh
+    units/kelvins.hh
+    units/knots.hh
+    units/liters.hh
+    units/lumens.hh
+    units/lux.hh
+    units/meters.hh
+    units/miles.hh
+    units/minutes.hh
+    units/moles.hh
+    units/nautical_miles.hh
+    units/newtons.hh
+    units/ohms.hh
+    units/pascals.hh
+    units/percent.hh
+    units/pounds_force.hh
+    units/pounds_mass.hh
+    units/radians.hh
+    units/revolutions.hh
+    units/seconds.hh
+    units/siemens.hh
+    units/slugs.hh
+    units/standard_gravity.hh
+    units/steradians.hh
+    units/tesla.hh
+    units/unos.hh
+    units/volts.hh
+    units/watts.hh
+    units/webers.hh
+    units/yards.hh
+  DEPS
+    prefix
+    quantity
+    quantity_point
+    unit_of_measure
+    unit_symbol
+  GTEST_SRCS
+    units/test/amperes_test.cc
+    units/test/bars_test.cc
+    units/test/becquerel_test.cc
+    units/test/bits_test.cc
+    units/test/bytes_test.cc
+    units/test/candelas_test.cc
+    units/test/celsius_test.cc
+    units/test/coulombs_test.cc
+    units/test/days_test.cc
+    units/test/degrees_test.cc
+    units/test/fahrenheit_test.cc
+    units/test/farads_test.cc
+    units/test/fathoms_test.cc
+    units/test/feet_test.cc
+    units/test/furlongs_test.cc
+    units/test/grams_test.cc
+    units/test/grays_test.cc
+    units/test/henries_test.cc
+    units/test/hertz_test.cc
+    units/test/hours_test.cc
+    units/test/inches_test.cc
+    units/test/joules_test.cc
+    units/test/katals_test.cc
+    units/test/kelvins_test.cc
+    units/test/knots_test.cc
+    units/test/liters_test.cc
+    units/test/lumens_test.cc
+    units/test/lux_test.cc
+    units/test/meters_test.cc
+    units/test/miles_test.cc
+    units/test/minutes_test.cc
+    units/test/moles_test.cc
+    units/test/nautical_miles_test.cc
+    units/test/newtons_test.cc
+    units/test/ohms_test.cc
+    units/test/pascals_test.cc
+    units/test/percent_test.cc
+    units/test/pounds_force_test.cc
+    units/test/pounds_mass_test.cc
+    units/test/radians_test.cc
+    units/test/revolutions_test.cc
+    units/test/seconds_test.cc
+    units/test/siemens_test.cc
+    units/test/slugs_test.cc
+    units/test/standard_gravity_test.cc
+    units/test/steradians_test.cc
+    units/test/tesla_test.cc
+    units/test/unos_test.cc
+    units/test/volts_test.cc
+    units/test/watts_test.cc
+    units/test/webers_test.cc
+    units/test/yards_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+)
+
+header_only_library(
+  NAME unit_symbol
+  HEADERS
+    unit_symbol.hh
+  DEPS
+    wrapper_operations
+  GTEST_SRCS
+    unit_symbol_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+    units
+)
+
 #
 # Private implementation detail targets
 #
 
 header_only_library(
-   NAME stdx
-   INTERNAL_ONLY
-   HEADERS
-      stdx/experimental/is_detected.hh
-      stdx/functional.hh
-      stdx/type_traits.hh
-      stdx/utility.hh
-   GTEST_SRCS
-      stdx/test/utility_test.cc
+  NAME apply_magnitude
+  INTERNAL_ONLY
+  HEADERS
+    apply_magnitude.hh
+  DEPS
+    apply_rational_magnitude_to_integral
+  GTEST_SRCS
+    apply_magnitude_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+)
+
+header_only_library(
+  NAME apply_rational_magnitude_to_integral
+  INTERNAL_ONLY
+  HEADERS
+    apply_rational_magnitude_to_integral.hh
+  DEPS
+    magnitude
+  GTEST_SRCS
+    apply_rational_magnitude_to_integral_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+)
+
+header_only_library(
+  NAME chrono_policy_validation
+  INTERNAL_ONLY
+  HEADERS
+    chrono_policy_validation.hh
+  DEPS
+    dimension
+    quantity
+    stdx
+    unit_of_measure
+    GTest::gtest
+  GTEST_SRCS
+    chrono_policy_validation_test.cc
+  GTEST_EXTRA_DEPS
+    prefix
+    testing
+)
+
+
+header_only_library(
+  NAME conversion_policy
+  INTERNAL_ONLY
+  HEADERS
+    conversion_policy.hh
+  DEPS
+    magnitude
+    stdx
+    unit_of_measure
+  GTEST_SRCS
+    conversion_policy_test.cc
+)
+
+header_only_library(
+  NAME dimension
+  INTERNAL_ONLY
+  HEADERS
+    dimension.hh
+  DEPS
+    packs
+    power_aliases
+  GTEST_SRCS
+    dimension_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+    units
+)
+
+header_only_library(
+  NAME magnitude
+  INTERNAL_ONLY
+  HEADERS
+    magnitude.hh
+  DEPS
+    packs
+    power_aliases
+    stdx
+    utility
+    zero
+  GTEST_SRCS
+    magnitude_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+)
+
+header_only_library(
+  NAME operators
+  INTERNAL_ONLY
+  HEADERS
+    operators.hh
+  GTEST_SRCS
+    operators_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+)
+
+header_only_library(
+  NAME packs
+  INTERNAL_ONLY
+  HEADERS
+    packs.hh
+  DEPS
+    stdx
+    utility
+  GTEST_SRCS
+    packs_test.cc
+)
+
+header_only_library(
+  NAME power_aliases
+  INTERNAL_ONLY
+  HEADERS
+    power_aliases.hh
+  GTEST_SRCS
+    power_aliases_test.cc
+  GTEST_EXTRA_DEPS
+    packs
+)
+
+header_only_library(
+  NAME rep
+  INTERNAL_ONLY
+  HEADERS
+    rep.hh
+  DEPS
+    stdx
+  GTEST_SRCS
+    rep_test.cc
+  GTEST_EXTRA_DEPS
+    chrono_interop
+    constant
+    magnitude
+    prefix
+    quantity
+    quantity_point
+    unit_symbol
+    units
+)
+
+header_only_library(
+  NAME stdx
+  INTERNAL_ONLY
+  HEADERS
+    stdx/experimental/is_detected.hh
+    stdx/functional.hh
+    stdx/type_traits.hh
+    stdx/utility.hh
+  GTEST_SRCS
+    stdx/test/utility_test.cc
+)
+
+header_only_library(
+  NAME unit_of_measure
+  INTERNAL_ONLY
+  HEADERS
+    unit_of_measure.hh
+  DEPS
+    dimension
+    magnitude
+    power_aliases
+    stdx
+    utility
+    zero
+  GTEST_SRCS
+    unit_of_measure_test.cc
+  GTEST_EXTRA_DEPS
+    prefix
+    testing
+    units
+)
+
+header_only_library(
+  NAME utility
+  INTERNAL_ONLY
+  HEADERS
+    utility/factoring.hh
+    utility/string_constant.hh
+    utility/type_traits.hh
+  DEPS
+    stdx
+  GTEST_SRCS
+    utility/test/factoring_test.cc
+    utility/test/string_constant_test.cc
+    utility/test/type_traits_test.cc
+)
+
+header_only_library(
+  NAME wrapper_operations
+  INTERNAL_ONLY
+  HEADERS
+    wrapper_operations.hh
+  DEPS
+    quantity
+    stdx
+  GTEST_SRCS
+    wrapper_operations_test.cc
+  GTEST_EXTRA_DEPS
+    testing
+    units
+)
+
+header_only_library(
+  NAME zero
+  INTERNAL_ONLY
+  HEADERS
+    zero.hh
+  GTEST_SRCS
+    zero_test.cc
 )