Fixing compilation errors related to OpenGL

[du-xinyi]

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See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

• I agree to contribute to the project under Apache 2 License.
• To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
• The PR is proposed to the proper branch
• There is a reference to the original bug report and related work
• There is accuracy test, performance test and test data in opencv_extra repository, if applicable
  Patch to opencv_extra has the same branch name.
• The feature is well documented and sample code can be built with the project CMake

[opencv-alalek]

How to validate your patch?
What is the original error message? what are passed parameters to CMake? what is used build configuration (OS/compiler)?

[du-xinyi]

如何验证您的补丁？ 原来的错误信息是什么？向 CMake 传递的参数是什么？使用什么构建配置（操作系统/编译器）？

When I compiled rgbd module in ubuntu20.04. It has the error

/usr/bin/ld: CMakeFiles/opencv_rgbd.dir/src/dynafu.cpp.o: in function cv::dynafu::DynaFuImpl<cv::Mat>::DynaFuImpl(cv::kinfu::Params const&)': dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x3ec): undefined reference to glGenRenderbuffersEXT'
/usr/bin/ld: dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x3f9): undefined reference to glBindRenderbufferEXT' /usr/bin/ld: dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x410): undefined reference to glRenderbufferStorageEXT'
/usr/bin/ld: dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x41e): undefined reference to glGenFramebuffersEXT' /usr/bin/ld: dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x42b): undefined reference to glBindFramebufferEXT'
/usr/bin/ld: dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x442): undefined reference to glFramebufferRenderbufferEXT' /usr/bin/ld: dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x450): undefined reference to glGenRenderbuffersEXT'
/usr/bin/ld: dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x45d): undefined reference to glBindRenderbufferEXT' /usr/bin/ld: dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x474): undefined reference to glRenderbufferStorageEXT'
/usr/bin/ld: dynafu.cpp:(.text._ZN2cv6dynafu10DynaFuImplINS_3MatEEC2ERKNS_5kinfu6ParamsE[_ZN2cv6dynafu10DynaFuImplINS_3MatEEC5ERKNS_5kinfu6ParamsE]+0x48b): undefined reference to `glFramebufferRenderbufferEXT'
collect2: error: ld returned 1 exit status
make[2]: *** [modules/rgbd/CMakeFiles/opencv_rgbd.dir/build.make:505: lib/libopencv_rgbd.so.4.8.1] Error 1

In the original code, contains the header file is '#include <GL/gl.h>', but when I view the file in /usr/include/Gl. The relevant functions are in the #include <GL/glew.h> file

I use gcc 9.4.0 to compiled. It need pass glew to cmake