将c ++库与CMake链接

Question

＆＃39;我正在尝试使用CMS，无法链接我在linux上编译的库。我的CMakeLists.txt：

project(region_algorithm)
SET_TARGET_PROPERTIES(PROPERTIES LINKER_LANGUAGE CXX)
cmake_minimum_required(VERSION 2.8)
aux_source_directory(. SRC_LIST)
add_executable(${PROJECT_NAME} ${SRC_LIST})
INCLUDE_DIRECTORIES(
    /usr/local/include/activemq-cpp-3.8.3
    /usr/local/apr/include/apr-1)
link_libraries(
    /usr/local/lib/libactivemq-cpp.a
    /usr/local/apr/lib/libapr-1.a)

什么时候＃39; m建筑项目我得到的错误如下：

regionalgorithmconsumer.cpp:-1: error: undefined reference to 
  `decaf::util::concurrent::CountDownLatch::CountDownLatch(int)'