[Install Pangolin] excute command : cmake --build . (Error like this)

[iDonghq]

error: ‘GL_SHADER_STORAGE_BUFFER’ was not declared in this scope
GlShaderStorageBuffer = GL_SHADER_STORAGE_BUFFER

[Coldplayplay]

I have the same problem. I guess this is the problem of the opengl, but i dont know how to solve it.hope someone can help solve it.

[iDonghq]

Maybe not openGL, cause I have tested it; maybe the path of installation or the version of pangolin

[stevenlovegrove]

This is probably related to the version of your installed OpenGL, maybe GLEW. You can safely comment that line if you like and the rest should compile fine.

The best solution is probably to find some #define with the OpenGL version to guard against this in the future.

[glc12125]

@stevenlovegrove , you are right, I believe it is because of OpenGL version. Checked the documention of OpenGL, (https://www.khronos.org/registry/OpenGL-Refpages/gl4/), found that "The GL_DISPATCH_INDIRECT_BUFFER and GL_SHADER_STORAGE_BUFFER targets are available only if the GL version is 4.3 or greater.". And according to the source code, where the error was thrown:

/usr/local/include/pangolin/gl/gl.h:171:29: error: ‘GL_SHADER_STORAGE_BUFFER’ was not declared in this scope:

#ifndef HAVE_GLES
GlPixelPackBuffer = GL_PIXEL_PACK_BUFFER, // PBO's GlPixelUnpackBuffer = GL_PIXEL_UNPACK_BUFFER, GlShaderStorageBuffer = GL_SHADER_STORAGE_BUFFER #endif

This is introduced in this change: e66e204#diff-d382887f3e1d2d9afcea169f207a1381

I need to checkout a previous commit in order to compile. If OpenGL 4.3 is a prerequisite, we should force that in the building step. If not, this should be fixed.

[caselitz]

In my case this problem occurred because I had ${CUDA_TOOLKIT_ROOT_DIR}/samples/common/inc in my cmake include_directories (to #include <helper_cuda.h>).

As there exists a directory GL, I suspect this causes pangolin/gl/glplatform.h to include the wrong <GL/glew.h>. At least removing this path from the include_directories solved the problem for me.

Edit: Indeed my /usr/include/GL/glew.h defines GL_SHADER_STORAGE_BUFFER while /usr/local/cuda-8.0/samples/common/inc/GL/glew.h does not.

[JerryOusama]

@caselitz Thank you for your infomation. I use </usr/include/GL/glew.h> instead of <GL/glew.h> to solve this problem.

[popsheng]

@caselitz I meet the same problem. It works by changing the <GL/glew.h> in pangolin/gl/glplatform.h using /usr/include/GL/glew.h.