Question

我的包CMakeLists.txt，我从另一个库（NewLib）的另一个包编译了libNewLib.so。我还包括我所包含的那个库的头文件：

set(LIB_MANUALLY "${CMAKE_CURRENT_SOURCE_DIR}/lib/") #I put the file libNewLib.so here
include_directories(
  include/NewLib
)
LINK_DIRECTORIES(${LIB_MANUALLY})
target_link_libraries(estimation libNewLib.so)

但我仍然得到错误：

/usr/bin/ld: cannot find -lNewLib

这是正确的方法吗？我尝试了几种解决方案，但它没有用。

我正在使用Ros kinetic catkin包

make VERSION 2.8.3

完整CMakeLists.txt：

cmake_minimum_required(VERSION 2.8.3)
project(localization)

add_compile_options(-std=c++11)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Ofast -march=native")
set(LIB_MANUALLY "${CMAKE_CURRENT_SOURCE_DIR}/lib/")
message(STATUS "LIB_MANUALLY : ${LIB_MANUALLY}")


find_package(catkin REQUIRED COMPONENTS
  cv_bridge
  image_transport
  roscpp
  rospy
  std_msgs
)

find_package(OpenCV REQUIRED
NO_MODULE # should be optional, tells CMake to use config mode
PATHS /usr/local # look here
NO_DEFAULT_PATH) # and don't look anywhere else
catkin_package(
#  INCLUDE_DIRS include
#  LIBRARIES localization
  CATKIN_DEPENDS cv_bridge image_transport roscpp rospy std_msgs
#  DEPENDS system_lib
)

include_directories(
  include
  include/NewLib
  ${catkin_INCLUDE_DIRS}
  ${OpenCV_INCLUDE_DIRS}
)
add_executable(estimation
  src/pose_map_estimation.cpp
  src/pose_map_estimation_main.cpp
)

target_link_libraries(estimation ${catkin_LIBRARIES} ${OpenCV_LIBRARIES} libNewLib.so)
LINK_DIRECTORIES(${LIB_MANUALLY})

Answer 1

在https://cmake.org/cmake/help/v3.0/command/link_directories.html中说：

指定链接器应搜索库的路径。该命令仅适用于调用后创建的目标。

因此，如果在link_directories命令之后创建目标，请尝试它是否有效。

您还可以考虑编写一个正确的cmake文件来查找您的库，并使用find_package来查找它。

将lib * .so添加到cmake

1 个答案: