Add missing -lpthreads and -Wall

CMakeLists.txt

@@ -3,7 +3,9 @@ cmake_minimum_required(VERSION 2.8.3)
 project(cpsm)
 list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR})
 include_directories(${PROJECT_SOURCE_DIR}/src)
-list(APPEND CMAKE_CXX_FLAGS "-std=c++11")
+if(CMAKE_COMPILER_IS_GNUCC)
+  list(APPEND CMAKE_CXX_FLAGS "-std=c++11 -Wall")
+endif()
 set(CMAKE_BUILD_TYPE Release)
 
 set(Boost_USE_MULTITHREADED ON)
@@ -25,11 +27,14 @@ endif()
 find_package(PythonLibs REQUIRED)
 include_directories(${PYTHON_INCLUDE_DIRS})
 
+find_package(Threads REQUIRED)
+
 add_library(cpsm_core src/matcher.cc src/path_util.cc src/str_util.cc)
 target_link_libraries(cpsm_core ${Boost_LIBRARIES})
 if(ICU_FOUND)
   target_link_libraries(cpsm_core ${ICU_LIBRARIES})
 endif()
+target_link_libraries(cpsm_core ${CMAKE_THREAD_LIBS_INIT})
 set_target_properties(cpsm_core PROPERTIES COMPILE_FLAGS "-fPIC")
 
 add_library(cpsm_py SHARED src/ctrlp_util.cc src/python_extension_main.cc)