diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7953d54..61f2144 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,12 +8,10 @@ endif()
 
 project(webcc)
 
-option(WEBCC_ENABLE_LOG "Enable logging?" ON)
 option(WEBCC_ENABLE_SOAP "Enable SOAP support (need pugixml)?" ON)
 option(WEBCC_ENABLE_SSL "Enable SSL/HTTPS support (need OpenSSL)?" OFF)
-option(WEBCC_ENABLE_INSTALL "Enable to install library and headers with CMake?" OFF)
-option(WEBCC_BUILD_UNITTEST "Build unit test?" ON)
-option(WEBCC_BUILD_EXAMPLE "Build examples?" ON)
+option(WEBCC_ENABLE_UNITTEST "Build unit test?" ON)
+option(WEBCC_ENABLE_EXAMPLES "Build examples?" ON)
 
 if(WIN32)
     option(WEBCC_ENABLE_VLD "Enable VLD (Visual Leak Detector)?" OFF)
@@ -22,36 +20,10 @@ if(WIN32)
     endif()
 endif()
 
-set(WEBCC_LOG_LEVEL "VERB" CACHE STRING "Log level (VERB, INFO, WARN, ERRO or FATA)")
+set(WEBCC_ENABLE_LOG 1 CACHE STRING "Enable logging? (0:OFF, 1:ON)")
+set(WEBCC_LOG_LEVEL 2 CACHE STRING "Log level (0:VERB, 1:INFO, 2:WARN, 3:ERRO or 4:FATA)")
 
-if(WEBCC_ENABLE_LOG)
-    add_definitions(-DWEBCC_ENABLE_LOG)
-
-    message(STATUS "WEBCC_LOG_LEVEL: ${WEBCC_LOG_LEVEL}")
-
-    # Add definition of WEBCC_LOG_LEVEL according variable WEBCC_LOG_LEVEL.
-    if(WEBCC_LOG_LEVEL MATCHES "^VERB$")
-        add_definitions(-DWEBCC_LOG_LEVEL=0)
-    elseif(WEBCC_LOG_LEVEL MATCHES "^INFO$")
-        add_definitions(-DWEBCC_LOG_LEVEL=1)
-    elseif(WEBCC_LOG_LEVEL MATCHES "^WARN$")
-        add_definitions(-DWEBCC_LOG_LEVEL=2)
-    elseif(WEBCC_LOG_LEVEL MATCHES "^ERRO$")
-        add_definitions(-DWEBCC_LOG_LEVEL=3)
-    elseif(WEBCC_LOG_LEVEL MATCHES "^FATA$")
-        add_definitions(-DWEBCC_LOG_LEVEL=4)
-    endif()
-endif()
-
-if(WEBCC_ENABLE_SOAP)
-    add_definitions(-DWEBCC_ENABLE_SOAP)
-endif()
-
-if(WEBCC_ENABLE_SSL)
-    add_definitions(-DWEBCC_ENABLE_SSL)
-endif()
-
-if(WEBCC_BUILD_UNITTEST)
+if(WEBCC_ENABLE_UNITTEST)
     enable_testing()
 endif()
 
@@ -121,8 +93,12 @@ if(WEBCC_ENABLE_SSL)
     endif()
 endif()
 
-# For including its own headers as "webcc/http_client.h".
-include_directories(${PROJECT_SOURCE_DIR})
+include_directories(
+    # For including its own headers as "webcc/http_client.h".
+    ${PROJECT_SOURCE_DIR}
+    # For including config.h as "webcc/config.h".
+    ${PROJECT_BINARY_DIR}
+    )
 
 set(THIRD_PARTY_DIR ${PROJECT_SOURCE_DIR}/third_party)
 
@@ -141,7 +117,7 @@ endif()
 
 add_subdirectory(webcc)
 
-if(WEBCC_BUILD_EXAMPLE)
+if(WEBCC_ENABLE_EXAMPLES)
     add_subdirectory(example/http_hello_client)
     add_subdirectory(example/http_hello_async_client)
 
@@ -167,7 +143,7 @@ if(WEBCC_BUILD_EXAMPLE)
     endif()
 endif()
 
-if(WEBCC_BUILD_UNITTEST)
+if(WEBCC_ENABLE_UNITTEST)
     add_subdirectory(third_party/src/gtest)
     add_subdirectory(unittest)
 endif()
diff --git a/unittest/CMakeLists.txt b/unittest/CMakeLists.txt
index 49f74a2..409b42d 100644
--- a/unittest/CMakeLists.txt
+++ b/unittest/CMakeLists.txt
@@ -1,14 +1,12 @@
 # Unit test
-if(WEBCC_BUILD_UNITTEST)
-    set(UT_SRCS
-        rest_service_manager_test.cc
-        )
+set(UT_SRCS
+    rest_service_manager_test.cc
+    )
 
-    set(UT_TARGET_NAME webcc_unittest)
+set(UT_TARGET_NAME webcc_unittest)
 
-    add_executable(${UT_TARGET_NAME} ${UT_SRCS})
-    target_link_libraries(${UT_TARGET_NAME} webcc pugixml gtest ${Boost_LIBRARIES})
-    target_link_libraries(${UT_TARGET_NAME} "${CMAKE_THREAD_LIBS_INIT}")
+add_executable(${UT_TARGET_NAME} ${UT_SRCS})
+target_link_libraries(${UT_TARGET_NAME} webcc pugixml gtest ${Boost_LIBRARIES})
+target_link_libraries(${UT_TARGET_NAME} "${CMAKE_THREAD_LIBS_INIT}")
 
-    add_test(${UT_TARGET_NAME} ${UT_TARGET_NAME})
-endif()
+add_test(${UT_TARGET_NAME} ${UT_TARGET_NAME})
diff --git a/unittest/rest_service_manager_test.cc b/unittest/rest_service_manager_test.cc
index c9c6f73..4a5cd13 100644
--- a/unittest/rest_service_manager_test.cc
+++ b/unittest/rest_service_manager_test.cc
@@ -12,15 +12,12 @@ class TestRestService : public webcc::RestService {
 TEST(RestServiceManager, URL_RegexBasic) {
   webcc::RestServiceManager service_manager;
 
-  {
-    webcc::RestServicePtr service = std::make_shared<TestRestService>();
-
-    service_manager.AddService(service, "/instances/(\\d+)", true);
-  }
+  service_manager.AddService(std::make_shared<TestRestService>(),
+                             "/instance/(\\d+)", true);
 
   std::vector<std::string> sub_matches;
 
-  std::string url = "/instances/12345";
+  std::string url = "/instance/12345";
   webcc::RestServicePtr service = service_manager.GetService(url, &sub_matches);
 
   EXPECT_TRUE(!!service);
@@ -28,7 +25,33 @@ TEST(RestServiceManager, URL_RegexBasic) {
   EXPECT_EQ(1, sub_matches.size());
   EXPECT_EQ("12345", sub_matches[0]);
 
-  url = "/instances/abcde";
+  url = "/instance/abcde";
+  sub_matches.clear();
+  service = service_manager.GetService(url, &sub_matches);
+
+  EXPECT_FALSE(!!service);
+}
+
+TEST(RestServiceManager, URL_RegexMultiple) {
+  webcc::RestServiceManager service_manager;
+
+  service_manager.AddService(std::make_shared<TestRestService>(),
+                             "/study/(\\d+)/series/(\\d+)/instance/(\\d+)",
+                             true);
+
+  std::vector<std::string> sub_matches;
+
+  std::string url = "/study/1/series/2/instance/3";
+  webcc::RestServicePtr service = service_manager.GetService(url, &sub_matches);
+
+  EXPECT_TRUE(!!service);
+
+  EXPECT_EQ(3, sub_matches.size());
+  EXPECT_EQ("1", sub_matches[0]);
+  EXPECT_EQ("2", sub_matches[1]);
+  EXPECT_EQ("3", sub_matches[2]);
+
+  url = "/study/a/series/b/instance/c";
   sub_matches.clear();
   service = service_manager.GetService(url, &sub_matches);
 
@@ -38,10 +61,8 @@ TEST(RestServiceManager, URL_RegexBasic) {
 TEST(RestServiceManager, URL_NonRegex) {
   webcc::RestServiceManager service_manager;
 
-  {
-    webcc::RestServicePtr service = std::make_shared<TestRestService>();
-    service_manager.AddService(service, "/instances", false);
-  }
+  service_manager.AddService(std::make_shared<TestRestService>(), "/instances",
+                             false);
 
   std::vector<std::string> sub_matches;
   std::string url = "/instances";
diff --git a/webcc/CMakeLists.txt b/webcc/CMakeLists.txt
index 6055dc1..32b032d 100644
--- a/webcc/CMakeLists.txt
+++ b/webcc/CMakeLists.txt
@@ -5,6 +5,11 @@ if(MSVC)
     add_definitions(-D_CRT_SECURE_NO_WARNINGS)
 endif()
 
+configure_file(
+    "${CMAKE_CURRENT_SOURCE_DIR}/config.h.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/config.h"
+    )
+
 # Adhere to GNU filesystem layout conventions.
 include(GNUInstallDirs)
 
@@ -102,10 +107,8 @@ set(TARGET webcc)
 
 add_library(${TARGET} STATIC ${HEADERS} ${SOURCES})
 
-if(WEBCC_ENABLE_INSTALL)
-    # Install lib and header files.
-    # On Linux, if CMAKE_INSTALL_PREFIX is ~, the lib (libwebcc.a) will be installed
-    # to ~/lib and header files will be installed to ~/include.
-    install(TARGETS ${TARGET} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
-    install(FILES ${HEADERS} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/webcc)
-endif()
+# Install lib and header files.
+# On Linux, if CMAKE_INSTALL_PREFIX is ~, the lib (libwebcc.a) will be installed
+# to ~/lib and header files will be installed to ~/include.
+install(TARGETS ${TARGET} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+install(FILES ${HEADERS} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/webcc)
diff --git a/webcc/config.h.in b/webcc/config.h.in
new file mode 100644
index 0000000..53d1c3e
--- /dev/null
+++ b/webcc/config.h.in
@@ -0,0 +1,12 @@
+#ifndef WEBCC_CONFIG_H_
+#define WEBCC_CONFIG_H_
+
+// Compile configurations.
+
+#define WEBCC_ENABLE_LOG @WEBCC_ENABLE_LOG@
+
+#if WEBCC_ENABLE_LOG
+#define WEBCC_LOG_LEVEL @WEBCC_LOG_LEVEL@
+#endif
+
+#endif  // WEBCC_CONFIG_H_
diff --git a/webcc/logger.h b/webcc/logger.h
index 800fd5d..6a078f1 100644
--- a/webcc/logger.h
+++ b/webcc/logger.h
@@ -3,6 +3,9 @@
 
 // Simple console logger.
 
+// This file was generated from "config.h.in" by CMake.
+#include "webcc/config.h"
+
 #if WEBCC_ENABLE_LOG
 
 #include <cstring>  // for strrchr()
@@ -16,8 +19,6 @@
 #define WEBCC_FATA 4
 
 // Default log level.
-// You have to define a proper log level in CMakeLists.txt, e.g.,
-//   add_definitions(-DWEBCC_LOG_LEVEL=2)
 #ifndef WEBCC_LOG_LEVEL
 #define WEBCC_LOG_LEVEL WEBCC_WARN
 #endif