此导出集中的一些（但不是全部）目标已定义

Question

我创建了一个CMakeLists.txt，内容如下

cmake_minimum_required (VERSION 3.8)
project(CTP_dll)

add_library(CTPdll SHARED CTPdll.cpp)
add_executable(CTPTest CTPTest.cpp)
target_link_libraries(CTPTest CTPdll)

find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
target_link_libraries(CTPdll ${OpenCV_LIBS})

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
target_link_libraries(CTPTest ${VTK_LIBRARIES})

错误信息是

CMake Error at D:/vcpkg/installed/x64-windows/share/hdf5/hdf5-targets.cmake:37 (message): Some (but not all) targets in this export set were already defined.

Targets Defined: hdf5::hdf5-shared;hdf5::hdf5_hl-shared

Targets not yet defined: hdf5::hdf5_cpp-shared;hdf5::hdf5_hl_cpp-shared

如果我如下删除VTK的include，就不会报错了。但显然我不能在 CTPTest.cpp 中包含 VTK，这是不可接受的。

cmake_minimum_required (VERSION 3.8)
project(CTP_dll)

add_library(CTPdll SHARED CTPdll.cpp)
add_executable(CTPTest CTPTest.cpp)
target_link_libraries(CTPTest CTPdll)

find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
target_link_libraries(CTPdll ${OpenCV_LIBS})

我在 windows10 平台上用 Visual Studio 2022 编译这个。网上有类似的问题，但没有人回答。所以我提出这个问题，希望有人能提供帮助。

Answer 1

您似乎遇到了 vcpkg issue #15502。

有一个pull request with a fix available，显然还没有合并

此导出集中的一些（但不是全部）目标已定义

Some (but not all) targets in this export set were already defined

c++

cmake