我正在尝试将我的一个程序链接到libevent . 我使用CMake作为构建系统 . 我的项目结构如下：
my_project
├── CMakeLists.txt
├── README.md
├── build
│ └── Build stuff
└── software
├── README.md
├── CMakeLists.txt
├── include
├── libraries
│ ├── libevent
│ │ └── CMakeLists.txt
│ └── anotherlibrary
│ └── CMakeLists.txt
├── prog1
│ ├── CMakeLists.txt
├── prog2
│ ├── CMakeLists.txt
└── prog3
└── CMakeLists.txt
prog1的CMakeList.txt（需要链接到libevent的那个）
cmake_minimum_required(VERSION 2.6)
project (prog1)
file(GLOB prog1
"*.h"
"*.cpp"
)
include_directories("${PROJECT_INCLUDE_DIR}/libevent/include")
add_executable(${PROJECT_NAME} ${prog1})
target_link_libraries(${PROJECT_NAME} event_core)
但是当我构建项目时，make无法找到由libevent构建的库 . 它搜索： libraries/libevent/lib/libevent_core.a 这是错误的路径，因为libevent在其中构建了libs： my_project/build/software/libraries/libevent/lib/libevent_core.a
我如何告诉CMake在那里搜索图书馆？我已经将以下行添加到我的Cmake文件中，但这不起作用
link_directories(/my_project/build/software/libraries/libevent/lib/)
SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build/lib)
SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build/bin)
有人建议吗？
1 回答
我通过从
build目录中删除内容并在build目录中重新运行cmake ..来自行解决问题 .我认为CMake不知道我做了哪些改变，通过重建项目，问题得到了解决 .