问题描述
我是cmake的新手。我以前使用过makefile，但是由于QtCreator，我不得不使用cmake。我也在尝试学习glfw。我有以下cmake文件：-
I am preaty new to cmake . I was using makefiles before but due to QtCreator I am forced to use cmake. I am trying to learn glfw as well too. I have following cmake file:-
cmake_minimum_required(VERSION 3.10)
project(untitled)
find_package(glfw3 3.2 REQUIRED)
find_package(OpenGL REQUIRED)
add_executable(${PROJECT_NAME} "main.cpp")
target_include_directories(untitled ${OPENGL_INCLUDE_DIR})
target_link_libraries(untitled ${OPENGL_gl_LIBRARY})
我得到以下错误：-
CMakeLists.txt:8: error: target_include_directories called with invalid arguments
我不知道这是什么意思。请帮助我
I have no Idea what does it mean. Please help me
推荐答案
如果您查看CMake文档，将会发现它的用法与您编写的内容有所不同：
If you look at the CMake documentation, you'll see that its usage differ a bit from what you wrote:
target_include_directories(<target> [SYSTEM] [BEFORE]
<INTERFACE|PUBLIC|PRIVATE> [items1...] [<INTERFACE|PUBLIC|PRIVATE>
[items2...] ...])
您会注意到，您错过了非可选参数< INTERFACE | PUBLIC | PRIVATE>
You'll notice that you miss the non optional argument <INTERFACE|PUBLIC|PRIVATE>
您必须指定包含目录的可见性：
You must specify the visibility of the include directory:
target_include_directories(untitled PRIVATE ${OPENGL_INCLUDE_DIR})
如果可执行文件在公共头文件中使用OpenGL头，则将其指定为public，以便链接到它的其他目标也包括OpenGL头。
If your executable uses OpenGL headers in a public header file, specify it as public so other targets that link to it also includes OpenGL headers.
我建议您习惯阅读文档，因为它是编写CMake脚本的最佳工具。
I suggest you to get used to read the documentation, as it will be your best tool writing CMake scripts.
即使它是可选的，也可以针对 target_link_libraries 采取这种形式，强烈建议您这样做：
Even though it's optional, can also take this form for target_link_libraries, which I strongly suggest you do:
target_link_libraries(untitled PUBLIC ${OPENGL_gl_LIBRARY})
这篇关于使用无效参数调用的cmake target_include_directories的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！