diff --git a/CMakeLists.txt b/CMakeLists.txt
index 47f29a6..90a68ac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -75,9 +75,9 @@ find_package(Threads REQUIRED)
 set(Boost_USE_STATIC_LIBS ON)
 set(Boost_USE_MULTITHREADED ON)
 if(WIN32)
-    find_package(Boost 1.66.0 REQUIRED)
+    find_package(Boost REQUIRED)
 else()
-    find_package(Boost 1.66.0 REQUIRED COMPONENTS system filesystem)
+    find_package(Boost REQUIRED COMPONENTS system filesystem date_time)
 endif()
 if(Boost_FOUND)
     include_directories(${Boost_INCLUDE_DIRS})
@@ -128,20 +128,25 @@ endif()
 
 add_subdirectory(webcc)
 
-if(WEBCC_ENABLE_EXAMPLES)
+if(WEBCC_ENABLE_AUTOTEST OR WEBCC_ENABLE_EXAMPLES)
     # For including jsoncpp as "json/json.h".
     include_directories(${THIRD_PARTY_DIR}/src/jsoncpp)
-    # REST examples need jsoncpp to parse and create JSON.
+
     add_subdirectory(${THIRD_PARTY_DIR}/src/jsoncpp)
+endif()
 
-    add_subdirectory(examples)
+if(WEBCC_ENABLE_AUTOTEST OR WEBCC_ENABLE_UNITTEST)
+    add_subdirectory(${THIRD_PARTY_DIR}/src/gtest)
 endif()
 
 if(WEBCC_ENABLE_AUTOTEST)
     add_subdirectory(autotest)
 endif()
 
+if(WEBCC_ENABLE_EXAMPLES)
+    add_subdirectory(examples)
+endif()
+
 if(WEBCC_ENABLE_UNITTEST)
-    add_subdirectory(${THIRD_PARTY_DIR}/src/gtest)
     add_subdirectory(unittest)
 endif()
diff --git a/autotest/CMakeLists.txt b/autotest/CMakeLists.txt
index dd17406..ff416c9 100644
--- a/autotest/CMakeLists.txt
+++ b/autotest/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Auto test
+# Automation test
 
 set(AT_SRCS
     client_autotest.cc
@@ -7,22 +7,23 @@ set(AT_SRCS
 set(AT_TARGET_NAME webcc_autotest)
 
 # Common libraries to link.
-set(TEST_LIBS webcc ${Boost_LIBRARIES} "${CMAKE_THREAD_LIBS_INIT}")
+set(AT_LIBS webcc ${Boost_LIBRARIES} "${CMAKE_THREAD_LIBS_INIT}")
 
 if(WEBCC_ENABLE_SSL)
-    set(TEST_LIBS ${TEST_LIBS} ${OPENSSL_LIBRARIES})
+    set(AT_LIBS ${AT_LIBS} ${OPENSSL_LIBRARIES})
 endif()
 
 if(WIN32)
-    set(TEST_LIBS ${TEST_LIBS} zlibstatic crypt32)
+    # TODO: crypt32 should be ssl related.
+    set(AT_LIBS ${AT_LIBS} zlibstatic crypt32)
 else()
-    set(TEST_LIBS ${TEST_LIBS} ${ZLIB_LIBRARIES})
+    set(AT_LIBS ${AT_LIBS} ${ZLIB_LIBRARIES})
 endif()
 
 if(UNIX)
     # Add `-ldl` for Linux to avoid "undefined reference to `dlopen'".
-    set(TEST_LIBS ${TEST_LIBS} ${CMAKE_DL_LIBS})
+    set(AT_LIBS ${AT_LIBS} ${CMAKE_DL_LIBS})
 endif()
 
 add_executable(${AT_TARGET_NAME} ${AT_SRCS})
-target_link_libraries(${AT_TARGET_NAME} webcc jsoncpp gtest ${TEST_LIBS})
+target_link_libraries(${AT_TARGET_NAME} webcc jsoncpp gtest ${AT_LIBS})
diff --git a/doc/screenshots/cmake_config_mac.png b/doc/screenshots/cmake_config_mac.png
new file mode 100644
index 0000000..9055b4b
Binary files /dev/null and b/doc/screenshots/cmake_config_mac.png differ
diff --git a/doc/screenshots/cmake_config_mac_openssl.png b/doc/screenshots/cmake_config_mac_openssl.png
new file mode 100644
index 0000000..0d79ffe
Binary files /dev/null and b/doc/screenshots/cmake_config_mac_openssl.png differ