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我試圖使用libcinder進行一些可視化。在集成我現有的代碼庫時，我遇到了一些我無法弄清楚的鏈接器錯誤。 我煮的問題降到最小例子，結果如下：使用cinder和poco時的鏈接器錯誤
cd /build/src && /usr/bin/cmake -E cmake_link_script CMakeFiles/BasicApp.dir/link.txt --verbose=1
/usr/bin/c++ -O3 -DNDEBUG CMakeFiles/BasicApp.dir/BasicApp.cpp.o -o ../bin/BasicApp -rdynamic -lPocoUtil -lPocoFoundation
make[2]: Leaving directory '/build'
[100%] Built target BasicApp
make[1]: Leaving directory '/build'
/usr/bin/cmake -E cmake_progress_start /build/CMakeFiles 0
如果不涉及煤渣可言，一切工作正常，如上面看到的。如果我將功能添加到最小煤渣例子（BasicApp），我得到的編譯以下的輸出：
cd /build/src && /usr/bin/cmake -E cmake_link_script CMakeFiles/BasicApp.dir/link.txt --verbose=1
/usr/bin/c++ -O3 -DNDEBUG CMakeFiles/BasicApp.dir/BasicApp.cpp.o -o ../bin/BasicApp -rdynamic -lPocoUtil -lPocoFoundation /cinder/lib/linux/x86_64/ogl/Release/libcinder.a -lGLU -lGL -lSM -lICE -lX11 -lXext -lXcursor -lXinerama -lXrandr -lXi -lz -lcurl -lfontconfig -lpulse -lmpg123 -lsndfile -lgobject-2.0 -lglib-2.0 -lgstreamer-1.0 -lgstbase-1.0 -lgstapp-1.0 -lgstvideo-1.0 -lgstgl-1.0 /cinder/lib/linux/x86_64//libboost_system.a /cinder/lib/linux/x86_64//libboost_filesystem.a -ldl -lpthread
CMakeFiles/BasicApp.dir/BasicApp.cpp.o: In function `load_images(std::string, std::string, int, int)':
BasicApp.cpp:(.text+0xca2): undefined reference to `Poco::DirectoryIterator::DirectoryIterator(std::string const&)'
BasicApp.cpp:(.text+0xd57): undefined reference to `Poco::DirectoryIterator::DirectoryIterator(std::string const&)'
collect2: error: ld returned 1 exit status
src/CMakeFiles/BasicApp.dir/build.make:118: recipe for target 'bin/BasicApp' failed
make[2]: *** [bin/BasicApp] Error 1
make[2]: Leaving directory '/build'
CMakeFiles/Makefile2:1244: recipe for target 'src/CMakeFiles/BasicApp.dir/all' failed
make[1]: *** [src/CMakeFiles/BasicApp.dir/all] Error 2
make[1]: Leaving directory '/build'
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2
我假設一些配置中的cmake煤渣文件中設置的是搞亂了的東西，但我不不明白爲什麼或如何解決它。 這是gcc版本5.4.0和cmake版本3.5.1。
這裏是有這個問題降低cmake的文件：
cmake_minimum_required(VERSION 3.2)
project(segslam C CXX)
set(CMAKE_CXX_STANDARD 11)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/poco")
find_package(Poco REQUIRED)
#include($ENV{CINDER_PATH}/proj/cmake/configure.cmake)
#set(cinder_DIR $ENV{CINDER_PATH}/${CINDER_LIB_DIRECTORY})
#find_package(cinder REQUIRED PATHS " $ENV{CINDER_PATH}/${CINDER_LIB_DIRECTORY}")
add_executable(BasicApp BasicApp.cpp)
#target_include_directories(BasicApp PUBLIC $ENV{CINDER_PATH}/include)
#target_link_libraries(BasicApp cinder)
target_link_libraries(BasicApp ${Poco_LIBRARIES})
set_target_properties(BasicApp PROPERTIES
DEBUG_POSTFIX "d"
RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
install(TARGETS BasicApp RUNTIME DESTINATION bin COMPONENT main)
install(FILES ${srcs} DESTINATION app COMPONENT main)
如果註釋行是註釋，那麼它在煤渣鏈接，事情打破。我正在使用here的FindPoco.cmake文件。 cinder cmake文件位於here。
鏈接順序似乎並不重要，我使用的其他庫都沒有這個問題。
向我們展示您的CMake代碼。 – arrowd
@arrowd我已將cmake代碼添加到問題中。 – voxelite