Linux下OpenGL的安装与cmake编译OpenGL程序
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OpenGL安装
安装命令如下：
$ sudo apt install build-essential
$ sudo apt install libgl1-mesa-dev
$ sudo apt install libglu1-mesa-dev
$ sudo apt install freeglut3 freeglut3-dev
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cmake编译OpenGL程序
project
├── MeshLib
│ └── core
│ └── bmp
│ └── RgbImage.cpp
├── MyDemo
│ ├── main.cpp
│ ├── CMakeLists.txt
│ └── build
│
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其他头文件的路径直接在.cpp里体现出来，如：
在main.cpp中：
#include <GL/glut.h>
#include "../MeshLib/core/viewer/Arcball.h"
#include "../MeshLib/core/bmp/RgbImage.h"
#include "../MeshLib/core/Geometry/quat.h"
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否则，如果直接写 #include “Arcball.h” 之类的，就需要在CMakeLists.txt中包含所有头文件路径（如glut.h就需要指定路径 OpenGL_INCLUDE_DIR）
若使用freeglut的话
MyDemo/CMakeLists.txt
cmake_minimum_required(VERSION 2.6)
add_compile_options(-std=c++11)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/build/CMakeModules/")
project(MyDemo)
find_package(OpenGL REQUIRED)
include_directories(${OpenGL_INCLUDE_DIR})
find_package(FREEGLUT REQUIRED)
include_directories(${FREEGLUT_INCLUDE_DIR})
add_executable(${PROJECT_NAME} ${PROJECT_BINARY_DIR}/../../MeshLib/core/bmp/RgbImage.cpp main.cpp )
target_link_libraries(${PROJECT_NAME} ${OPENGL_LIBRARY} ${FREEGLUT_LIBRARY} ${OPENGL_LIBRARY})
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但是光这样还是没办法的，因为找不到freeglut库，这时候需要再写一个搜索package frerglut的CMakeLitsts.txt
在build目录下mkdir一个CMakeModules, 新建一个文件名FindFREEGLUT.cmake的文件，编辑内容如下（为什么是在build目录下新建而不是在MyDemo目录下？因为我们是进入build中，执行命令”cmake ..“的）
# Try to find the FREEGLUT library
#
# FREEGLUT_INCLUDE_DIR
# FREEGLUT_LIBRARY
# FREEGLUT_FOUND
FIND_PATH(
FREEGLUT_INCLUDE_DIR GL/freeglut.h GL/gl.h GL/glu.h GL/glew.h
${CMAKE_INCLUDE_PATH}
$ENV{include}
${OPENGL_INCLUDE_DIR}
/usr/include
/usr/local/include
)
SET(STORE_CMAKE_FIND_FRAMEWORK ${CMAKE_FIND_FRAMEWORK})
SET(CMAKE_FIND_FRAMEWORK NEVER)
FIND_LIBRARY(
FREEGLUT_LIBRARY
NAMES freeglut_static freeglut glut GL
PATH
/opt/local/lib
${CMAKE_LIBRARY_PATH}
$ENV{lib}
/usr/lib
/usr/local/lib
)
SET(CMAKE_FIND_FRAMEWORK ${STORE_CMAKE_FIND_FRAMEWORK})
IF (FREEGLUT_INCLUDE_DIR AND FREEGLUT_LIBRARY)
SET(FREEGLUT_FOUND TRUE)
ENDIF (FREEGLUT_INCLUDE_DIR AND FREEGLUT_LIBRARY)
IF (FREEGLUT_FOUND)
IF (NOT FREEGLUT_FIND_QUIETLY)
MESSAGE(STATUS "Found FREEGLUT: ${FREEGLUT_LIBRARY}")
ENDIF (NOT FREEGLUT_FIND_QUIETLY)
ELSE (FREEGLUT_FOUND)
IF (FREEGLUT_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find FREEGLUT")
ENDIF (FREEGLUT_FIND_REQUIRED)
ENDIF (FREEGLUT_FOUND)
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若使用glut的话
则则比较简单：
cmake_minimum_required (VERSION 2.6)
project(OpenGL)
find_package(OpenGL REQUIRED)
include_directories(${OPENGL_INCLUDE_DIR})
find_package(GLUT REQUIRED)
include_directories(${GLUT_INCLUDE_DIR})
set(CMAKE_CXX_FLAGS "-g -Wall")
add_executable(OpenGL Main.cpp)
target_link_libraries(OpenGL ${GLUT_LIBRARY} ${OPENGL_LIBRARY})
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可能出现的错误
if you use `-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated
解决方法 add_compile_options(-fpermissive -std=c++11)
undefined reference to symbol …
这类错误通常是链接.so, .a文件失败产生的，但是都会给出具体是哪个lib没有：”/lib/x86_64-linux-gnu/libz.so: error adding symbols: DSO missing from command line”
解决方法，
1.用各种方法把libz.so放到指定目录下（方法太多了自行查询）
2.若目录下已有libz.so，则在target_link_libraries中加上该libz.so（ ${PROJECT_SOURCE_DIR}//libz.so）
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版权声明：本文为CSDN博主「SarKerson」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/sarkerson/java/article/details/78068417
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