Add a fused version of gtest.

CMakeLists.txt

@@ -39,29 +39,27 @@ add_test(compile-test ${CMAKE_CTEST_COMMAND}
 # See the Google Test FAQ "Why is it not recommended to install a
 # pre-compiled copy of Google Test (for example, into /usr/local)?"
 # at http://code.google.com/p/googletest/wiki/FAQ for more details.
-if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/gtest/CMakeLists.txt)
-  option(
-    gtest_force_shared_crt
-    "Use shared (DLL) run-time lib even when Google Test is built as static lib."
-    ON)
-  if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
-    add_definitions(-DGTEST_USE_OWN_TR1_TUPLE=1)
-  endif ()
-  
-  add_subdirectory(gtest)
-  include_directories(gtest/include)
-  link_directories(${CMAKE_CURRENT_BINARY_DIR}/gtest)
-
-  add_executable(format-test format-test.cc)
-  target_link_libraries(format-test format gtest)
-  if (CMAKE_COMPILER_IS_GNUCXX)
-    set_target_properties(format-test PROPERTIES COMPILE_FLAGS
-      "-Wall -Wextra -pedantic -Wno-long-long -Wno-variadic-macros")
-  endif ()
-  add_test(format-test format-test)
-  if (HAVE_STD_CPP11_FLAG)
-    set_target_properties(format-test PROPERTIES COMPILE_FLAGS "-std=c++11")
-  endif ()
+
+include_directories(.)
+
+if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+  add_definitions(-DGTEST_USE_OWN_TR1_TUPLE=1)
+endif ()
+
+add_library(gtest gtest/gtest-all.cc)
+
+find_package(Threads)
+target_link_libraries(gtest ${CMAKE_THREAD_LIBS_INIT})
+
+add_executable(format-test format-test.cc)
+target_link_libraries(format-test format gtest)
+if (CMAKE_COMPILER_IS_GNUCXX)
+  set_target_properties(format-test PROPERTIES COMPILE_FLAGS
+    "-Wall -Wextra -pedantic -Wno-long-long -Wno-variadic-macros")
+endif ()
+add_test(format-test format-test)
+if (HAVE_STD_CPP11_FLAG)
+  set_target_properties(format-test PROPERTIES COMPILE_FLAGS "-std=c++11")
 endif ()
 
 find_library(PROFILER_LIB profiler)