CMakeLists:使用 ExternalProject 从 Github 添加源文件

我正在为 Beckhoff ADS 库编写一个小的 catkin 包装器。我想安装AdsLib文件夹中的文件，但不使用Beckhoff的CMake文件。

我只想复制文件，以便将它们添加到我自己的 CMakeList 中的库中。如果我手动复制文件，这工作正常。但我想直接使用 Github 源代码中的最新文件进行构建。

我尝试了在stackoverflow上可以找到的所有可能的组合，但不知何故无法使其工作。

cmake_minimum_required(VERSION 2.8.3)
project(ads_catkin)
find_package(catkin_simple REQUIRED)
catkin_simple()
include(ExternalProject)

ExternalProject_Add(ads
PREFIX ${CMAKE_BINARY_DIR}/ads
GIT_REPOSITORY https://github.com/Beckhoff/ADS.git
GIT_TAG master
CONFIGURE_COMMAND ""
#GIT_TAG 6b3a03009a757cf651fe44d8be7b6df698028f0e
UPDATE_COMMAND ""
BUILD_COMMAND ""
INSTALL_COMMAND ""
)
ExternalProject_Get_Property(ads source_dir)
cs_add_library(${PROJECT_NAME}
${source_dir}/AdsLib/AdsDef.cpp
)
cs_install()
cs_export()

我第一次使用 catkin_tools 构建时，这给了我：

Errors     << ads_catkin:cmake /home/xxx/xxx_ws/logs/ads_catkin/build.cmake.000.log                                 
CMake Error at /home/xxx/xxx_ws/devel/share/catkin_simple/cmake/catkin_simple-extras.cmake:150 (add_library):
Cannot find source file:
/home/xxx/xxx/build/ads_catkin/ads/src/ads/AdsLib/AdsDef.cpp
Tried extensions .c .C .c++ .cc .cpp .cxx .m .M .mm .h .hh .h++ .hm .hpp
.hxx .in .txx
Call Stack (most recent call first):
CMakeLists.txt:23 (cs_add_library)

CMake Error: CMake can not determine linker language for target: ads_catkin
CMake Error: Cannot determine link language for target "ads_catkin".

然后，当我第二次对相同的代码运行构建工具时，文件实际上被克隆了，但我最终得到这个错误：

Errors     << ads_catkin:make /home/xxx/xxx_ws/logs/ads_catkin/build.make.000.log                                   
make[2]: *** No rule to make target 'CMakeFiles/ads_catkin.dir/build'.  Stop.
make[1]: *** [CMakeFiles/ads_catkin.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
Cloning into 'ads'...
Already on 'master'
make: *** [all] Error 2

顺便说一句：cs_add_library是add_library和target_link_libraries catkin_simple形式。

更新： 越来越近...将解决方案从@Tsyvarev调整到我的文件：

cmake_minimum_required(VERSION 2.8.3)
project(ads_catkin)
find_package(catkin_simple REQUIRED)
catkin_simple()
include(ExternalProject)

ExternalProject_Add(ads
PREFIX ${CATKIN_DEVEL_PREFIX}/ads
GIT_REPOSITORY https://github.com/Beckhoff/ADS.git
GIT_TAG 6b3a03009a757cf651fe44d8be7b6df698028f0e
#GIT_TAG master
CONFIGURE_COMMAND ""
UPDATE_COMMAND ""
BUILD_COMMAND ""
INSTALL_COMMAND ""
BUILD_BYPRODUCTS 
<SOURCE_DIR>/AdsLib/AdsDef.cpp
<SOURCE_DIR>/AdsLib/AdsLib.cpp
<SOURCE_DIR>/AdsLib/AmsConnection.cpp
<SOURCE_DIR>/AdsLib/AmsPort.cpp
<SOURCE_DIR>/AdsLib/AmsRouter.cpp
<SOURCE_DIR>/AdsLib/Frame.cpp
<SOURCE_DIR>/AdsLib/Log.cpp
<SOURCE_DIR>/AdsLib/NotificationDispatcher.cpp
<SOURCE_DIR>/AdsLib/Sockets.cpp
<SOURCE_DIR>/AdsLib/AdsDef.h
<SOURCE_DIR>/AdsLib/AdsLib.h
<SOURCE_DIR>/AdsLib/AdsNotification.h
<SOURCE_DIR>/AdsLib/AmsConnection.h
<SOURCE_DIR>/AdsLib/AmsHeader.h
<SOURCE_DIR>/AdsLib/AmsPort.h
<SOURCE_DIR>/AdsLib/AmsRouter.h
<SOURCE_DIR>/AdsLib/Frame.h
<SOURCE_DIR>/AdsLib/Log.h
<SOURCE_DIR>/AdsLib/NotificationDispatcher.h
<SOURCE_DIR>/AdsLib/RingBuffer.h
<SOURCE_DIR>/AdsLib/Router.h
<SOURCE_DIR>/AdsLib/Semaphore.h
<SOURCE_DIR>/AdsLib/Sockets.h
<SOURCE_DIR>/AdsLib/wrap_endian.h
<SOURCE_DIR>/AdsLib/wrap_socket.h
)
ExternalProject_Get_Property(ads SOURCE_DIR)

include_directories(
${SOURCE_DIR}/AdsLib
)
cs_add_library(AdsLib
${SOURCE_DIR}/AdsLib/AdsDef.cpp
${SOURCE_DIR}/AdsLib/AdsLib.cpp
${SOURCE_DIR}/AdsLib/AmsConnection.cpp
${SOURCE_DIR}/AdsLib/AmsPort.cpp
${SOURCE_DIR}/AdsLib/AmsRouter.cpp
${SOURCE_DIR}/AdsLib/Frame.cpp
${SOURCE_DIR}/AdsLib/Log.cpp
${SOURCE_DIR}/AdsLib/NotificationDispatcher.cpp
${SOURCE_DIR}/AdsLib/Sockets.cpp
)
add_dependencies(AdsLib ads)

cs_install()
install(DIRECTORY ${SOURCE_DIR}/AdsLib/
DESTINATION ${CATKIN_PACKAGE_INCLUDE_DESTINATION}
PATTERN ".cpp" EXCLUDE   
)
cs_export()

我试图将头文件包含在我的 AdsLib 库中。但是我仍然收到一个错误：

In file included from /home/xxx/xxx_ws/src/xxx/nav_controller/src/controller.cpp:19:0:
/home/xxx/xxx_ws/src/xxx/nav_controller/include/nav_controller/controller.h:27:10: fatal error: AdsLib.h: No such file or directory
#include "AdsLib.h"
^~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/nav_controller.dir/src/controller.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /home/xxx/xxx_ws/src/xxx/nav_controller/src/test.cpp:22:0:
/home/xxx/xxx_ws/src/xxx/nav_controller/include/nav_controller/controller.h:27:10: fatal error: AdsLib.h: No such file or directory
#include "AdsLib.h"
^~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/nav_controller.dir/src/test.cpp.o] Error 1
make[1]: *** [CMakeFiles/nav_controller.dir/all] Error 2
make: *** [all] Error 2