diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8acff8a8..7acc5ac8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,13 +25,27 @@ project(opencensus-cpp VERSION 0.3.0 LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
-set(OPENCENSUS_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
+
+option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
+
+IF(MSVC)
+    add_definitions(-DNOMINMAX)
+ENDIF()
+
+if(CMAKE_BUILD_TYPE STREQUAL "Release")
+    option(INSTALL_HEADERS "Install header files" ON)
+else()
+    option(INSTALL_HEADERS "Install header files" OFF)
+endif()
+
+list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
+
+find_package(googletest REQUIRED) 
+find_package(abseil REQUIRED)
 
 include(CTest) # Defines option BUILD_TESTING.
 enable_testing()
 
-list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
-include(OpenCensusDeps)
 include(OpenCensusHelpers)
 
 # OpenCensus code.
@@ -41,3 +55,10 @@ add_subdirectory(opencensus)
 if(BUILD_TESTING)
   add_subdirectory(examples)
 endif()
+
+install(
+    EXPORT opencensus-targets
+    FILE opencensus-config.cmake
+    NAMESPACE opencensus::
+    DESTINATION share/opencensus
+)
\ No newline at end of file
diff --git a/cmake/Findabseil.cmake b/cmake/Findabseil.cmake
new file mode 100644
index 00000000..fd1a1f3b
--- /dev/null
+++ b/cmake/Findabseil.cmake
@@ -0,0 +1,278 @@
+# Copyright 2018 The Cartographer Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+cmake_minimum_required(VERSION 3.2)
+
+if(NOT TARGET absl_base)
+  set(prefix ${CMAKE_STATIC_LIBRARY_PREFIX})
+  set(suffix ${CMAKE_STATIC_LIBRARY_SUFFIX})
+  include(${CMAKE_ROOT}/Modules/ExternalProject.cmake)
+  set(ABSEIL_PROJECT_NAME abseil)
+  set(ABSEIL_PROJECT_SRC_DIR
+    ${CMAKE_CURRENT_BINARY_DIR}/${ABSEIL_PROJECT_NAME}/src/${ABSEIL_PROJECT_NAME})
+  set(ABSEIL_PROJECT_BUILD_DIR
+    ${CMAKE_CURRENT_BINARY_DIR}/${ABSEIL_PROJECT_NAME}/src/${ABSEIL_PROJECT_NAME}-build)
+  set(ABSEIL_INCLUDE_DIRS ${ABSEIL_PROJECT_SRC_DIR})
+  
+  ExternalProject_Add(${ABSEIL_PROJECT_NAME}
+    PREFIX ${ABSEIL_PROJECT_NAME}
+    GIT_REPOSITORY   https://github.com/abseil/abseil-cpp.git
+    GIT_TAG          5441bbe1db5d0f2ca24b5b60166367b0966790af
+    INSTALL_COMMAND  ""
+    BUILD_COMMAND    ${CMAKE_COMMAND} --build "${ABSEIL_PROJECT_BUILD_DIR}"
+    CMAKE_CACHE_ARGS "-DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=ON;-DBUILD_TESTING:BOOL=OFF"
+    BUILD_BYPRODUCTS "${ABSEIL_LIBRARY_PATH};${ABSEIL_DEPENDENT_LIBRARIES}"
+  )
+  
+  # absl_algorithm
+  
+  add_library(absl_algorithm STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_algorithm
+    PROPERTIES 
+	INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+	IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/algorithm/${prefix}absl_algorithm${suffix}
+  )
+  
+  # absl_base
+  
+  add_library(absl_base STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_base
+    PROPERTIES IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/base/${prefix}absl_base${suffix}
+    INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_PROJECT_SRC_DIR}
+  )
+    
+  set_property(TARGET absl_base
+    PROPERTY INTERFACE_LINK_LIBRARIES
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/base/${prefix}absl_dynamic_annotations${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/base/${prefix}absl_malloc_internal${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/base/${prefix}absl_spinlock_wait${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/base/${prefix}absl_throw_delegate${suffix}
+  )
+  
+  # absl_container
+  
+  add_library(absl_container STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_container
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/container/${prefix}absl_container${suffix}
+  )
+  set_property(TARGET absl_container
+    PROPERTY INTERFACE_LINK_LIBRARIES
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/container/${prefix}test_instance_tracker_lib${suffix}
+  )
+  
+  # absl_debugging
+  
+  add_library(absl_debugging STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_debugging
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/debugging/${prefix}absl_debugging${suffix}
+  )
+  set_property(TARGET absl_debugging
+    PROPERTY INTERFACE_LINK_LIBRARIES
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/debugging/${prefix}absl_symbolize${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/debugging/${prefix}absl_examine_stack${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/debugging/${prefix}absl_failure_signal_handler${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/debugging/${prefix}absl_leak_check${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/debugging/${prefix}absl_stack_consumption${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/debugging/${prefix}absl_stacktrace${suffix}
+  ) 
+  
+  # absl_memory
+  
+  add_library(absl_memory STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_memory
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/memory/${prefix}absl_memory${suffix}
+  )
+  
+  # absl_meta
+  
+  add_library(absl_meta STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_meta
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/meta/${prefix}absl_meta${suffix}
+  )
+  
+  # absl_numeric
+  
+  add_library(absl_numeric STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_numeric
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/numeric/${prefix}absl_numeric${suffix}
+  )
+  set_property(TARGET absl_numeric
+    PROPERTY INTERFACE_LINK_LIBRARIES
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/numeric/${prefix}absl_int128${suffix}
+  )
+  
+  # absl_strings
+  
+  add_library(absl_strings STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_strings
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/strings/${prefix}absl_strings${suffix}
+  )
+  set_property(TARGET absl_strings
+    PROPERTY INTERFACE_LINK_LIBRARIES
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/strings/${prefix}str_format_internal${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/strings/${prefix}str_format_extension_internal${suffix}
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/strings/${prefix}absl_str_format${suffix}
+  )
+  
+  # absl_synchronization
+  
+  add_library(absl_synchronization STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_synchronization
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/synchronization/${prefix}absl_synchronization${suffix}
+  )
+  
+  # absl_time
+  
+  add_library(absl_time STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_time
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/time/${prefix}absl_time${suffix}
+  )
+  
+  # absl_utility
+  
+  add_library(absl_utility STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_utility
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/utility/${prefix}absl_utility${suffix}
+  )
+  
+  # absl_span
+  
+  add_library(absl_span STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_span
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/types/${prefix}absl_span${suffix}
+  )
+  
+  # absl_optional
+  
+  add_library(absl_optional STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_optional
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/types/${prefix}absl_optional${suffix}
+  )
+  
+  # absl_variant
+  
+  add_library(absl_variant STATIC IMPORTED GLOBAL)
+  set_target_properties(absl_variant
+    PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+    ${ABSEIL_INCLUDE_DIRS}
+    IMPORTED_LOCATION
+    ${ABSEIL_PROJECT_BUILD_DIR}/absl/types/${prefix}absl_variant${suffix}
+  )
+  
+  
+  # missing: absl_hash "${ABSEIL_PROJECT_BUILD_DIR}/absl/hash/${prefix}absl_hash${suffix}"
+  
+  # absl_types
+  
+  #add_library(absl_types STATIC IMPORTED GLOBAL)
+  #set_target_properties(absl_types
+  #  PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+  #  ${ABSEIL_INCLUDE_DIRS}
+  #)
+  #set_target_properties(absl_types
+   # PROPERTIES INTERFACE_LINK_LIBRRARIES
+   # "${ABSEIL_PROJECT_BUILD_DIR}/absl/types/${prefix}absl_any${suffix}
+   # ${ABSEIL_PROJECT_BUILD_DIR}/absl/types/${prefix}absl_bad_any_cast${suffix}
+   # ${ABSEIL_PROJECT_BUILD_DIR}/absl/types/${prefix}absl_bad_optional_access${suffix}
+   # 
+  #  
+  #  "
+  #)
+  #add_dependencies(absl_types ${ABSEIL_PROJECT_NAME}) 
+  #add_library(absl::types ALIAS absl_types)
+  
+  target_link_libraries(absl_algorithm INTERFACE absl_base absl_meta) 
+  target_link_libraries(absl_container INTERFACE absl_algorithm absl_base absl_memory)
+  target_link_libraries(absl_debugging INTERFACE absl_base)
+  target_link_libraries(absl_memory INTERFACE absl_meta) 
+  target_link_libraries(absl_meta INTERFACE absl_base) 
+  target_link_libraries(absl_numeric INTERFACE absl_base) 
+  target_link_libraries(absl_strings INTERFACE absl_base absl_memory absl_meta absl_numeric) 
+  target_link_libraries(absl_synchronization INTERFACE absl_base absl_time absl_debugging) 
+  target_link_libraries(absl_time INTERFACE absl_base absl_numeric)
+  target_link_libraries(absl_utility INTERFACE absl_base absl_meta) 
+  target_link_libraries(absl_span INTERFACE absl_base absl_utility absl_meta absl_algorithm absl_strings) 
+  target_link_libraries(absl_optional INTERFACE absl_utility absl_meta absl_algorithm absl_strings) 
+  target_link_libraries(absl_variant INTERFACE absl_utility absl_meta absl_algorithm absl_strings) 
+
+  add_dependencies(absl_algorithm ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_base ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_container ${ABSEIL_PROJECT_NAME})
+  add_dependencies(absl_debugging ${ABSEIL_PROJECT_NAME})
+  add_dependencies(absl_memory ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_meta ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_numeric ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_strings ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_synchronization ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_time ${ABSEIL_PROJECT_NAME})
+  add_dependencies(absl_utility ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_span ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_optional ${ABSEIL_PROJECT_NAME}) 
+  add_dependencies(absl_variant ${ABSEIL_PROJECT_NAME}) 
+
+  add_library(absl::algorithm ALIAS absl_algorithm)
+  add_library(absl::base ALIAS absl_base) 
+  add_library(absl::container ALIAS absl_container)
+  add_library(absl::debugging ALIAS absl_debugging)
+  add_library(absl::memory ALIAS absl_memory)
+  add_library(absl::meta ALIAS absl_meta)
+  add_library(absl::numeric ALIAS absl_numeric)
+  add_library(absl::strings ALIAS absl_strings)
+  add_library(absl::synchronization ALIAS absl_synchronization) 
+  add_library(absl::time ALIAS absl_time)
+  add_library(absl::utility ALIAS absl_utility)
+  add_library(absl::span ALIAS absl_span)
+  add_library(absl::optional ALIAS absl_optional)
+  add_library(absl::variant ALIAS absl_variant)
+
+  unset(prefix)
+  unset(suffix)
+endif()
diff --git a/cmake/Findgoogletest.cmake b/cmake/Findgoogletest.cmake
new file mode 100644
index 00000000..379b948f
--- /dev/null
+++ b/cmake/Findgoogletest.cmake
@@ -0,0 +1,74 @@
+# Copyright 2018 The Cartographer Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+cmake_minimum_required(VERSION 3.2)
+
+if(NOT TARGET gtest)
+  set(prefix ${CMAKE_STATIC_LIBRARY_PREFIX})
+  set(suffix ${CMAKE_STATIC_LIBRARY_SUFFIX})
+  include(${CMAKE_ROOT}/Modules/ExternalProject.cmake)
+  set(GOOGLETEST_PROJECT_NAME googletest)
+  set(GOOGLETEST_PROJECT_SRC_DIR
+    "${CMAKE_CURRENT_BINARY_DIR}/${GOOGLETEST_PROJECT_NAME}-prefix/src/${GOOGLETEST_PROJECT_NAME}")
+  set(GOOGLETEST_PROJECT_BUILD_DIR
+    "${CMAKE_CURRENT_BINARY_DIR}/${GOOGLETEST_PROJECT_NAME}-prefix/src/${GOOGLETEST_PROJECT_NAME}-build")
+  set(GOOGLETEST_INCLUDE_DIRS ${GOOGLETEST_PROJECT_SRC_DIR})
+  
+  include(ExternalProject)
+  ExternalProject_Add(${GOOGLETEST_PROJECT_NAME}
+    GIT_REPOSITORY https://github.com/abseil/googletest
+    GIT_TAG "master"
+    INSTALL_COMMAND ""
+    BUILD_COMMAND ${CMAKE_COMMAND} --build "${GOOGLETEST_PROJECT_BUILD_DIR}"
+    CMAKE_CACHE_ARGS "-Dgtest_force_shared_crt:BOOL=ON"
+  )
+  
+  file(MAKE_DIRECTORY ${GOOGLETEST_PROJECT_SRC_DIR}/googletest/include)
+  file(MAKE_DIRECTORY ${GOOGLETEST_PROJECT_SRC_DIR}/googlemock/include)
+
+  add_library(gtest STATIC IMPORTED)
+  set_target_properties(gtest PROPERTIES
+    IMPORTED_LOCATION_DEBUG ${GOOGLETEST_PROJECT_BUILD_DIR}/lib/${prefix}gtest${suffix}
+    IMPORTED_LOCATION_RELEASE ${GOOGLETEST_PROJECT_BUILD_DIR}/lib/${prefix}gtestd${suffix}
+    IMPORTED_LINK_INTERFACE_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}"
+    INTERFACE_INCLUDE_DIRECTORIES ${GOOGLETEST_PROJECT_SRC_DIR}/googletest/include)
+  add_dependencies(gtest googletest)
+
+  add_library(gtest_main STATIC IMPORTED)
+  set_target_properties(gtest_main PROPERTIES
+    IMPORTED_LOCATION_DEBUG ${GOOGLETEST_PROJECT_BUILD_DIR}/lib/${prefix}gtest_maind${suffix}
+    IMPORTED_LOCATION_RELEASE ${GOOGLETEST_PROJECT_BUILD_DIR}/lib/${prefix}gtest_main${suffix}
+    IMPORTED_LINK_INTERFACE_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}"
+    INTERFACE_INCLUDE_DIRECTORIES ${GOOGLETEST_PROJECT_SRC_DIR}/googletest/include)
+  add_dependencies(gtest_main googletest)
+
+  add_library(gmock STATIC IMPORTED)
+  set_target_properties(gmock PROPERTIES
+    IMPORTED_LOCATION_DEBUG ${GOOGLETEST_PROJECT_BUILD_DIR}/lib/${prefix}gmockd${suffix}
+    IMPORTED_LOCATION_RELEASE ${GOOGLETEST_PROJECT_BUILD_DIR}/lib/${prefix}gmock${suffix}
+    IMPORTED_LINK_INTERFACE_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}"
+    INTERFACE_INCLUDE_DIRECTORIES ${GOOGLETEST_PROJECT_SRC_DIR}/googlemock/include)
+  add_dependencies(gmock googletest)
+
+  add_library(gmock_main STATIC IMPORTED)
+  set_target_properties(gmock_main PROPERTIES
+    IMPORTED_LOCATION_DEBUG ${GOOGLETEST_PROJECT_BUILD_DIR}/lib/${prefix}gmock_maind${suffix}
+    IMPORTED_LOCATION_RELEASE ${GOOGLETEST_PROJECT_BUILD_DIR}/lib/${prefix}gmock_main${suffix}
+    IMPORTED_LINK_INTERFACE_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}"
+    INTERFACE_INCLUDE_DIRECTORIES ${GOOGLETEST_PROJECT_SRC_DIR}/googlemock/include)
+  add_dependencies(gmock_main googletest)
+  
+  unset(prefix)
+  unset(suffix)
+endif()
diff --git a/cmake/OpenCensusDeps.cmake b/cmake/OpenCensusDeps.cmake
deleted file mode 100644
index 4c49f167..00000000
--- a/cmake/OpenCensusDeps.cmake
+++ /dev/null
@@ -1,60 +0,0 @@
-# Copyright 2018, OpenCensus Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-if(BUILD_TESTING)
-  if(NOT TARGET gtest_main)
-    message(STATUS "Dependency: googletest (BUILD_TESTING=${BUILD_TESTING})")
-
-    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/googletest.CMakeLists.txt
-                   ${CMAKE_BINARY_DIR}/googletest-download/CMakeLists.txt)
-    execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
-                    RESULT_VARIABLE result
-                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download)
-    if(result)
-      message(FATAL_ERROR "CMake step failed: ${result}")
-    endif()
-    execute_process(COMMAND ${CMAKE_COMMAND} --build .
-                    RESULT_VARIABLE result
-                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download)
-    if(result)
-      message(FATAL_ERROR "Build step failed: ${result}")
-    endif()
-
-    add_subdirectory(${CMAKE_BINARY_DIR}/googletest-src
-                     ${CMAKE_BINARY_DIR}/googletest-build EXCLUDE_FROM_ALL)
-  endif()
-endif()
-
-# Load abseil second, it depends on googletest.
-if(NOT TARGET absl::base)
-  message(STATUS "Dependency: abseil")
-
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/abseil.CMakeLists.txt
-                 ${CMAKE_BINARY_DIR}/abseil-download/CMakeLists.txt)
-  execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
-                  RESULT_VARIABLE result
-                  WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/abseil-download)
-  if(result)
-    message(FATAL_ERROR "CMake step failed: ${result}")
-  endif()
-  execute_process(COMMAND ${CMAKE_COMMAND} --build .
-                  RESULT_VARIABLE result
-                  WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/abseil-download)
-  if(result)
-    message(FATAL_ERROR "Build step failed: ${result}")
-  endif()
-
-  add_subdirectory(${CMAKE_BINARY_DIR}/abseil-src
-                   ${CMAKE_BINARY_DIR}/abseil-build EXCLUDE_FROM_ALL)
-endif()
diff --git a/cmake/OpenCensusHelpers.cmake b/cmake/OpenCensusHelpers.cmake
index 70ca202e..259bb976 100644
--- a/cmake/OpenCensusHelpers.cmake
+++ b/cmake/OpenCensusHelpers.cmake
@@ -1,59 +1,78 @@
-# Copyright 2018, OpenCensus Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Prepends opencensus_ to all deps that aren't in a :: namespace.
-function(prepend_opencensus OUT DEPS)
-  set(_DEPS "")
-  foreach(dep ${DEPS})
-    if("${dep}" MATCHES "::")
-      list(APPEND _DEPS "${dep}")
-    else()
-      list(APPEND _DEPS "opencensus_${dep}")
-    endif()
-  endforeach()
-  set(${OUT} ${_DEPS} PARENT_SCOPE)
-endfunction()
-
-# Helper function like bazel's cc_test. Usage:
-#
-# opencensus_test(trace_some_test internal/some_test.cc dep1 dep2...)
-function(opencensus_test NAME SRC)
-  if(BUILD_TESTING)
-    set(_NAME "opencensus_${NAME}")
-    add_executable(${_NAME} ${SRC})
-    prepend_opencensus(DEPS "${ARGN}")
-    target_link_libraries(${_NAME} "${DEPS}" gmock gtest_main)
-    add_test(NAME ${_NAME} COMMAND ${_NAME})
-  endif()
-endfunction()
-
-# Helper function like bazel's cc_library.  Libraries are namespaced as
-# opencensus_* and public libraries are also aliased as opencensus-cpp::*.
-function(opencensus_lib NAME)
-  cmake_parse_arguments(ARG "PUBLIC" "" "SRCS;DEPS" ${ARGN})
-  set(_NAME "opencensus_${NAME}")
-  prepend_opencensus(ARG_DEPS "${ARG_DEPS}")
-  if(ARG_SRCS)
-    add_library(${_NAME} ${ARG_SRCS})
-    target_link_libraries(${_NAME} PUBLIC ${ARG_DEPS})
-    target_include_directories(${_NAME} PUBLIC ${OPENCENSUS_INCLUDE_DIR})
-  else()
-    add_library(${_NAME} INTERFACE)
-    target_link_libraries(${_NAME} INTERFACE ${ARG_DEPS})
-    target_include_directories(${_NAME} INTERFACE ${OPENCENSUS_INCLUDE_DIR})
-  endif()
-  if(ARG_PUBLIC)
-    add_library(${PROJECT_NAME}::${NAME} ALIAS ${_NAME})
-  endif()
-endfunction()
+# Copyright 2018, OpenCensus Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Prepends opencensus_ to all deps that aren't in a :: namespace.
+function(prepend_opencensus OUT DEPS)
+  set(_DEPS "")
+  foreach(dep ${DEPS})
+    if("${dep}" MATCHES "::")
+      list(APPEND _DEPS "${dep}")
+    else()
+      list(APPEND _DEPS "opencensus_${dep}")
+    endif()
+  endforeach()
+  set(${OUT} ${_DEPS} PARENT_SCOPE)
+endfunction()
+
+# Helper function like bazel's cc_test. Usage:
+#
+# opencensus_test(trace_some_test internal/some_test.cc dep1 dep2...)
+function(opencensus_test NAME SRC)
+  if(BUILD_TESTING)
+    set(_NAME "opencensus_${NAME}")
+    add_executable(${_NAME} ${SRC})
+    prepend_opencensus(DEPS "${ARGN}")
+    target_link_libraries(${_NAME} PRIVATE "${DEPS}" gmock gtest_main)
+    add_test(NAME ${_NAME} COMMAND ${_NAME})
+  endif()
+endfunction()
+
+# Helper function like bazel's cc_library.  Libraries are namespaced as
+# opencensus_* and public libraries are also aliased as opencensus-cpp::*.
+function(opencensus_lib NAME)
+  cmake_parse_arguments(ARG "PUBLIC" "" "HDRS;SRCS;DEPS;PRIVATE_DEPS" ${ARGN})
+  set(_NAME "opencensus_${NAME}")
+  prepend_opencensus(ARG_DEPS "${ARG_DEPS}")
+  
+  if(ARG_SRCS)
+    add_library(${_NAME} ${ARG_SRCS})
+    if(ARG_DEPS)
+      target_link_libraries(${_NAME} PUBLIC ${ARG_DEPS})
+    endif()
+    if(ARG_PRIVATE_DEPS)
+      target_link_libraries(${_NAME} PRIVATE ${ARG_PRIVATE_DEPS})
+    endif()
+    target_include_directories(${_NAME} PUBLIC $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}> $<INSTALL_INTERFACE:include>)
+  else()
+    add_library(${_NAME} INTERFACE)
+    target_link_libraries(${_NAME} INTERFACE ${ARG_DEPS})
+    target_include_directories(${_NAME} INTERFACE $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}> $<INSTALL_INTERFACE:include>)
+  endif()
+  
+  if(INSTALL_HEADERS)
+    if(ARG_HEADERS)
+      message(STATUS "Arg_headers: ${ARG_HEADERS}")
+      foreach(header_file IN LISTS ARG_HEADERS)
+          get_filename_component(dir ${header_file} DIRECTORY)
+          install(FILES ${CMAKE_SOURCE_DIR}/${header_file} DESTINATION "include/${dir}")
+      endforeach()
+    endif()
+  endif()
+  
+  install(TARGETS ${_NAME} EXPORT opencensus-targets
+      RUNTIME DESTINATION bin
+      LIBRARY DESTINATION lib
+      ARCHIVE DESTINATION lib
+  )
+endfunction()
diff --git a/cmake/abseil.CMakeLists.txt b/cmake/abseil.CMakeLists.txt
deleted file mode 100644
index 01e90b78..00000000
--- a/cmake/abseil.CMakeLists.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-# Copyright 2018, OpenCensus Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-cmake_minimum_required(VERSION 3.5)
-
-project(abseil-download NONE)
-
-include(ExternalProject)
-ExternalProject_Add(abseil_project
-	GIT_REPOSITORY https://github.com/abseil/abseil-cpp
-	GIT_TAG "master"
-	SOURCE_DIR "${CMAKE_BINARY_DIR}/abseil-src"
-	BINARY_DIR "${CMAKE_BINARY_DIR}/abseil-build"
-	UPDATE_COMMAND ""
-	PATCH_COMMAND ""
-	CONFIGURE_COMMAND ""
-	BUILD_COMMAND ""
-	INSTALL_COMMAND ""
-	TEST_COMMAND ""
-	LOG_DOWNLOAD ON
-)
diff --git a/cmake/googletest.CMakeLists.txt b/cmake/googletest.CMakeLists.txt
deleted file mode 100644
index f69cb120..00000000
--- a/cmake/googletest.CMakeLists.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-# Copyright 2018, OpenCensus Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-cmake_minimum_required(VERSION 3.5)
-
-project(googletest-download NONE)
-
-include(ExternalProject)
-ExternalProject_Add(googletest_project
-	GIT_REPOSITORY https://github.com/abseil/googletest
-	GIT_TAG "master"
-	SOURCE_DIR "${CMAKE_BINARY_DIR}/googletest-src"
-	BINARY_DIR "${CMAKE_BINARY_DIR}/googletest-build"
-	UPDATE_COMMAND ""
-	PATCH_COMMAND ""
-	CONFIGURE_COMMAND ""
-	BUILD_COMMAND ""
-	INSTALL_COMMAND ""
-	TEST_COMMAND ""
-	LOG_DOWNLOAD ON
-)
diff --git a/examples/helloworld/CMakeLists.txt b/examples/helloworld/CMakeLists.txt
index 456169f2..de4f36e3 100644
--- a/examples/helloworld/CMakeLists.txt
+++ b/examples/helloworld/CMakeLists.txt
@@ -17,8 +17,8 @@ find_package(Threads REQUIRED)
 add_executable(opencensus_examples_helloworld helloworld.cc)
 target_link_libraries(opencensus_examples_helloworld
                       absl::strings
-                      opencensus-cpp::exporters_stats_stdout
-                      opencensus-cpp::exporters_trace_stdout
-                      opencensus-cpp::stats
-                      opencensus-cpp::trace
+                      opencensus_exporters_stats_stdout
+                      opencensus_exporters_trace_stdout
+                      opencensus_stats
+                      opencensus_trace
                       Threads::Threads)
diff --git a/opencensus/stats/CMakeLists.txt b/opencensus/stats/CMakeLists.txt
index 53ab1ad9..a01a1aae 100644
--- a/opencensus/stats/CMakeLists.txt
+++ b/opencensus/stats/CMakeLists.txt
@@ -12,10 +12,21 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-opencensus_lib(stats PUBLIC DEPS stats_core stats_recording)
+opencensus_lib(stats 
+               PUBLIC 
+               HDRS
+               internal/aggregation_window.h
+               internal/set_aggregation_window.h
+               stats.h
+               stats_exporter.h
+               DEPS 
+               stats_core 
+               stats_recording)
 
 opencensus_lib(stats_test_utils
                PUBLIC
+               HDRS
+               testing/test_utils.h
                SRCS
                testing/test_utils.cc
                DEPS