Question

我有以下CMakeLists文件：

cmake_minimum_required(VERSION 2.6 FATAL_ERROR)

project(PointCloudComparator)

find_package(PCL 1.7 REQUIRED COMPONENTS common io)

set(PCL_DIR "/usr/share/pcl-1.7/PCLConfig.cmake")
set(PCL_INCLUDE_DIRS "/usr/include/pcl-1.7")
set(PCL_LIBRARY_DIRS "/usr/lib/")


include_directories(${PCL_INCLUDE_DIRS} "/usr/include/eigen3" "include")
link_directories(${PCL_LIBRARY_DIRS})
add_definitions(${PCL_DEFINITIONS})

add_executable (segmentator src/segmentation.cpp include/segmentation.h)
target_link_libraries (segmentator ${PCL_LIBRARIES} 
${PCL_COMMON_LIBRARIES} ${PCL_IO_LIBRARIES} 
"/usr/lib/libpcl_visualization.so" "/usr/lib/libpcl_keypoints.so" 
"/usr/lib/libpcl_features.so" "/usr/lib/libpcl_kdtree.so" 
"/usr/lib/libpcl_search.so" "/usr/lib/libpcl_filters.so" 
"/usr/lib/libpcl_segmentation.so" 
"/usr/lib/libpcl_sample_consensus.so")

add_executable (comparator src/comparator.cpp include/comparator.h 
include/segmentation.h)
target_link_libraries (comparator ${PCL_LIBRARIES} 
${PCL_COMMON_LIBRARIES} 
${PCL_IO_LIBRARIES} "/usr/lib/libpcl_visualization.so" 
"/usr/lib/libpcl_keypoints.so" "/usr/lib/libpcl_features.so" 
"/usr/lib/libpcl_kdtree.so" "/usr/lib/libpcl_search.so" 
"/usr/lib/libpcl_filters.so" "/usr/lib/libpcl_segmentation.so" 
"/usr/lib/libpcl_sample_consensus.so")

但是，当我尝试编译代码时，我收到错误：

CMakeFiles/comparator.dir/src/comparator.cpp.o: In function `main':
comparator.cpp:(.text+0x3313): reference to 
`region_growing_segmentation(std::string)' not defined
collect2: error: ld returned 1 exit status

region_growing_segmentation（std :: string）是在segmentation.h中声明并在segmentation.cpp中定义的函数。 Eclipse实际上知道函数的位置，但是当我尝试运行时，它只是无法找到它。有什么想法吗？

此致

Answer 1

您正在构建两个单独的可执行文件（segmentator和comparator）。每个可执行文件都由一个源文件和一个头文件组成。这就是你用add_executable命令所说的。单个add_executable命令使用的源文件不与您创建的任何其他可执行目标共享。

如果您有两个程序之间应该共享的公共代码，那么您应该将它放在一个单独的源文件中，并将其添加到每个可执行文件中（将新的公共源文件添加到add_executable命令中）。或者创建一个与两个可执行文件链接的库目标。

CMakeLists - Make找不到头文件

1 个答案: