C++ Cmake 链接库目标链接错误
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/19478088/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Cmake link library target link error
提问by Luffy
Hi I have problem with linkg Glfw and other libraries using cmake. From command line i compile like this
嗨，我在使用 cmake 链接 Glfw 和其他库时遇到问题。从命令行我像这样编译
g++ main.cpp -lGL -lGLU -lGLEW -lglfw
But I wanted to use cmake for compiling. I tried to use target_linkg_libraries but this produce error
但我想使用 cmake 进行编译。我尝试使用 target_linkg_libraries 但这会产生错误
CMake Error at CMakeLists.txt:18 (target_link_libraries): Cannot specify link libraries for target "GL" which is not built by this
project.
CMakeLists.txt:18 (target_link_libraries) 中的 CMake 错误：无法为不是由该
项目构建的目标“GL”指定链接库。
I tried do this using add definitions. I dont see error but this don't link libraries.
我尝试使用添加定义来做到这一点。我没有看到错误，但这不链接库。
cmake_minimum_required (VERSION 2.6)
project (test)
find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)
ADD_DEFINITIONS(
-lGL
-lGLU
-lGLEW
-lglfw
)
add_executable(test.out
main.cpp
)
target_link_libraries(GL GLU GLEW glfw)
回答by Zifre
The syntax for target_link_librariesis:
的语法target_link_libraries是：
target_link_libraries(your_executable_name libraries_list)
And you don't have to add add_definitionstatements (target_link_librariesadds this options)
而且您不必添加add_definition语句（target_link_libraries添加此选项）
There are also some useful variables provided by OpenGL and GLEW packages.
OpenGL 和 GLEW 包也提供了一些有用的变量。
Your CMakeLists.txt should be like:
你的 CMakeLists.txt 应该是这样的：
cmake_minimum_required (VERSION 2.6)
project (test)
find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)
include_directories(${OPENGL_INCLUDE_DIR} ${GLEW_INCLUDE_DIRS})
add_executable(test
main.cpp
)
target_link_libraries(test ${OPENGL_LIBRARIES} ${GLEW_LIBRARIES})
One important detail to keep in mind is to place the target_link_librariesafterthe add_executable(or add_library) line.
要记住的一个重要细节是在（或）行target_link_libraries之后放置。add_executableadd_library
