CMake链接glfw3 lib错误 [英] CMake linking glfw3 lib error

问题描述

我正在使用CLion，并且正在使用glfw3 lib编写程序.( http ://www.glfw.org/docs/latest/)

i'm working with CLion, and I'm writing a program using the glfw3 lib.(http://www.glfw.org/docs/latest/)

我为lib安装并正确完成了所有工作，我在.a和.h文件中:

I installed and did everything correctly for the lib i have the .a and .h files in:

/usr/local/lib/libglfw3.a

/usr/local/include/.h(all files)

我现在正在尝试使用该库，但出现链接器错误:

I'm trying to use the library now, but i'm getting the linker error:

undefined reference to 'glViewport'等.我正在使用的所有功能

undefined reference to 'glViewport' etc. etc. all the functions i'm using

我将lib路径添加到了make文件中，我听不懂我在做什么错，我的CMakeLists.txt看起来像这样:

I added the lib path to the make file, I can't understand what i'm doing wrong, my CMakeLists.txt looks like this:

cmake_minimum_required(VERSION 3.6)
project(testing)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

set(SOURCE_FILES main.cpp examples.h)

add_executable(testing ${SOURCE_FILES})
target_link_libraries(testing /usr/local/lib/libglfw3.a)
target_link_libraries(testing /usr/local/lib/libTest.a)

target_link_libraries(testing pthread)

任何帮助将不胜感激.

谢谢！

推荐答案

您不应将绝对路径硬编码到CMake文件中.这使CMake无效.

You should not hard code absolute paths into your CMake files. This renders CMake useless.

在GLFW的文档中，，在那里明确地写着:

In the documentation of GLFW on how to link against it, there it is explicitly written:

find_package(glfw3 3.2 REQUIRED)
find_package(OpenGL REQUIRED)

target_include_directories(myapp PUBLIC ${OPENGL_INCLUDE_DIR})
target_link_libraries(myapp
                      glfw
                      ${OPENGL_gl_LIBRARY})

---

此外，您可以替换

---

Moreover, you can replace

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

使用

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

CMake会根据当前使用的编译器自动找出正确的编译器标志.

and CMake will figure out the correct compiler flag automatically depending on the compiler currently in use.

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