C++ 编译时，CMake不包括链接库的路径_C++_Build_Cmake_Compiler Errors

C++ 编译时，CMake不包括链接库的路径

c++ build cmake compiler-errors

C++ 编译时，CMake不包括链接库的路径,c++,build,cmake,compiler-errors,C++,Build,Cmake,Compiler Errors,所以我的目录结构是 / -- CMakeLists.txt -- bencode/ ---- bType.hpp ---- bType.cpp ---- Decoder.hpp ---- Decoder.cpp ---- CMakeLists.txt -- torrent/ ---- main.cpp ---- Torrent.hpp ---- Torrent.cpp ---- Tracker.hpp ---- Tracker.cpp ---- CMakeLists.txt 根CMakeL

所以我的目录结构是

/
-- CMakeLists.txt

-- bencode/
---- bType.hpp
---- bType.cpp
---- Decoder.hpp
---- Decoder.cpp
---- CMakeLists.txt

-- torrent/
---- main.cpp
---- Torrent.hpp
---- Torrent.cpp
---- Tracker.hpp
---- Tracker.cpp
---- CMakeLists.txt

根CMakeLists.txt是

cmake_minimum_required(VERSION 3.16)
project(Torrent VERSION 1.0.0)
add_subdirectory(bencode)
add_subdirectory(torrent)

add_library(
    Decoder
    Decoder.hpp
    Decoder.cpp
)
add_library(
    bType
    bType.hpp
    bType.cpp
)
target_include_directories(bType PRIVATE "${CMAKE_CURRENT_SOURCE/_DIR}")
target_include_directories(Decoder PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}")

add_library(
    Torrent
    Torrent.hpp
    Torrent.cpp
)
add_library(
    Tracker
    Tracker.hpp
    Tracker.cpp
)
add_executable(main main.cpp)
target_link_libraries(
    main PRIVATE
    Torrent Tracker
    Decoder bType
)

bencode/CMakeLists.txt是

cmake_minimum_required(VERSION 3.16)
project(Torrent VERSION 1.0.0)
add_subdirectory(bencode)
add_subdirectory(torrent)

add_library(
    Decoder
    Decoder.hpp
    Decoder.cpp
)
add_library(
    bType
    bType.hpp
    bType.cpp
)
target_include_directories(bType PRIVATE "${CMAKE_CURRENT_SOURCE/_DIR}")
target_include_directories(Decoder PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}")

add_library(
    Torrent
    Torrent.hpp
    Torrent.cpp
)
add_library(
    Tracker
    Tracker.hpp
    Tracker.cpp
)
add_executable(main main.cpp)
target_link_libraries(
    main PRIVATE
    Torrent Tracker
    Decoder bType
)

torrent/CMakeLists.txt是

cmake_minimum_required(VERSION 3.16)
project(Torrent VERSION 1.0.0)
add_subdirectory(bencode)
add_subdirectory(torrent)

add_library(
    Decoder
    Decoder.hpp
    Decoder.cpp
)
add_library(
    bType
    bType.hpp
    bType.cpp
)
target_include_directories(bType PRIVATE "${CMAKE_CURRENT_SOURCE/_DIR}")
target_include_directories(Decoder PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}")

add_library(
    Torrent
    Torrent.hpp
    Torrent.cpp
)
add_library(
    Tracker
    Tracker.hpp
    Tracker.cpp
)
add_executable(main main.cpp)
target_link_libraries(
    main PRIVATE
    Torrent Tracker
    Decoder bType
)

每当我构建时，

Torrent.cpp

编译都会失败，因为它包含不在同一目录中的

Decoder.hpp

，并且build命令在编译期间不包含路径

[build] ../torrent/Torrent.cpp:5:10: fatal error: Decoder.hpp: No such file or directory
[build]  #include <Decoder.hpp>
[build]           ^~~~~~~~~~~~~
[build] comp

[build]../torrent/torrent.cpp:5:10:致命错误：Decoder.hpp:没有这样的文件或目录
[构建]#包括
[建造]^~~~~~~~~~~~~
[建造]公司

编译时应该有一个

-I

标志，但是没有

如果您将

解码器.hpp

的位置设置为

解码器

的公共包含目录，并使用

目标链接库

将

Torrent

链接到

解码器

，请帮助我找出原因，CMake将获取您需要的

Torrent

，以搜索适当的位置以查找

Docoder

的标题

如果您将

Decoder.hpp

的位置设置为

Decoder

的公共包含目录，并使用

target\u link\u libraries

将

Torrent

链接到

Decoder

，CMake将选择您需要的

Torrent

来搜索适当的位置以查找

Docoder

的头

您已将所有库目标链接到

main

，但如果

Torrent

库和

解码器

库之间存在依赖关系，则还应将解码器
链接到
Torrent
。要将
解码器
库的include目录传播到
Torrent
库，请改用
目标_include_directories（）
调用中的
PUBLIC
参数
bencode/CMakeLists.txt：

add_library( Decoder Decoder.hpp Decoder.cpp ) add_library( bType bType.hpp bType.cpp ) target_include_directories(bType PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}") # Use PUBLIC here to propagate the include directories to consumers. target_include_directories(Decoder PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")

add_library( Torrent Torrent.hpp Torrent.cpp ) add_library( Tracker Tracker.hpp Tracker.cpp ) add_executable(main main.cpp) # Link Decoder to Torrent here, because Torrent depends on Decoder. target_link_libraries(Torrent PUBLIC Decoder) # Link the other libraries to main, Decoder will be brought along with Torrent. target_link_libraries( main PRIVATE Torrent Tracker bType )
torrent/CMakeLists.txt：

add_library( Decoder Decoder.hpp Decoder.cpp ) add_library( bType bType.hpp bType.cpp ) target_include_directories(bType PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}") # Use PUBLIC here to propagate the include directories to consumers. target_include_directories(Decoder PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")

add_library( Torrent Torrent.hpp Torrent.cpp ) add_library( Tracker Tracker.hpp Tracker.cpp ) add_executable(main main.cpp) # Link Decoder to Torrent here, because Torrent depends on Decoder. target_link_libraries(Torrent PUBLIC Decoder) # Link the other libraries to main, Decoder will be brought along with Torrent. target_link_libraries( main PRIVATE Torrent Tracker bType )

您已将所有库目标链接到
main
，但如果
Torrent
库和
解码器
库之间存在依赖关系，则还应将解码器链接到
Torrent
。要将
解码器
库的include目录传播到
Torrent
库，请改用
目标_include_directories（）
调用中的
PUBLIC
参数
bencode/CMakeLists.txt：

add_library( Decoder Decoder.hpp Decoder.cpp ) add_library( bType bType.hpp bType.cpp ) target_include_directories(bType PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}") # Use PUBLIC here to propagate the include directories to consumers. target_include_directories(Decoder PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")

add_library( Torrent Torrent.hpp Torrent.cpp ) add_library( Tracker Tracker.hpp Tracker.cpp ) add_executable(main main.cpp) # Link Decoder to Torrent here, because Torrent depends on Decoder. target_link_libraries(Torrent PUBLIC Decoder) # Link the other libraries to main, Decoder will be brought along with Torrent. target_link_libraries( main PRIVATE Torrent Tracker bType )
torrent/CMakeLists.txt：

add_library( Decoder Decoder.hpp Decoder.cpp ) add_library( bType bType.hpp bType.cpp ) target_include_directories(bType PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}") # Use PUBLIC here to propagate the include directories to consumers. target_include_directories(Decoder PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")

add_library( Torrent Torrent.hpp Torrent.cpp ) add_library( Tracker Tracker.hpp Tracker.cpp ) add_executable(main main.cpp) # Link Decoder to Torrent here, because Torrent depends on Decoder. target_link_libraries(Torrent PUBLIC Decoder) # Link the other libraries to main, Decoder will be brought along with Torrent. target_link_libraries( main PRIVATE Torrent Tracker bType )