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Vinograd
Asked: 2023-08-17 18:56:19 +0800 CST

使用带有库的 CMake 编译错误[关闭]

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我正在尝试创建一个具有 2 个目标的 CMake 项目。其中一个必须是库，另一个必须是可执行文件。但是当我尝试构建可执行文件时，我收到一条错误消息，指出找不到该库。

库 CMake：

file(GLOB SOURCES ${CMAKE_CURRENT_LIST_DIR}/src/*.cpp)

set(HEADERS include)

add_library(arcade-lib STATIC ${SOURCES})

target_include_directories(arcade-lib PUBLIC ${HEADERS})
target_link_libraries(arcade-lib PRIVATE sfml-window sfml-graphics)

可执行的CMake：

file(GLOB SOURCES ${CMAKE_CURRENT_LIST_DIR}/src/*.cpp)
set(INCLUDE include)

set(ARCADE_GAMES_LIB_INCLUDE ../arcade-games-lib/include)

add_executable(snake-game snake-game.cpp ${SOURCES})

target_link_libraries(snake-game PRIVATE arcade-games-lib sfml-graphics sfml-window sfml-system sfml-main )
target_include_directories(snake-game PRIVATE ${INCLUDE} ${ARCADE_GAMES_LIB_INCLUDE})

主要CMake：

cmake_minimum_required(VERSION 3.25)
project(arcade_games)

set(CMAKE_CXX_STANDARD 20)

set(CMAKE_EXE_LINKER_FLAGS "-static -static-libgcc")
set(SFML_STATIC_LIBRARIES TRUE)

find_package(SFML 2.5 COMPONENTS graphics window system REQUIRED)

add_subdirectory(arcade-games-lib)

add_subdirectory(snake-game)

错误信息：

C:\Program Files\JetBrains\CLion 2022.3.2\bin\mingw\bin/ld.exe: cannot find -larcade-games-lib
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

我什至不知道该怎么办，因为一切看起来都很正常。我预计将构建一个包含我的库的可执行文件

c++

1 个回答

  1. Best Answer

    add_library正如评论中指出的，问题在于和中的库名称target_link_libraries需要匹配。

    正如 @Botje 和Why is cmake file GLOB bad?file(GLOB中指出的那样，使用收集源文件是有问题的。

    我冒昧地从你的 CMakeLists.txt 中删除了一些臃肿的内容：

    库 CMake：

    add_library(arcade-lib STATIC 
  src/foo.cpp
  src/bar.cpp
  include/my_header.h # the compiler will work without it but headers may not show up in IDEs
)

target_include_directories(arcade-lib PUBLIC include) # no need for a variable, just use relative path
target_link_libraries(arcade-lib PRIVATE sfml-window sfml-graphics)

    可执行的CMake：

    # no need for ARCADE_GAMES_LIB_INCLUDE once you specify the right library name

add_executable(snake-game 
  snake-game.cpp
  src/more_snake.cpp
)

# use the same library name you used in add_library:
target_link_libraries(snake-game PRIVATE arcade-lib sfml-graphics sfml-window sfml-system sfml-main)
target_include_directories(snake-game PRIVATE include)
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