cannot build on linux

[alfredoivan]

Hello.
I'm using ubuntu 14.04.5 and the code cannot be compiled.
First i did cmake on build/ folder.

$ cmake ..

Then make fails:

$ make
[ 14%] Built target glfw
[ 15%] Building CXX object CMakeFiles/vermilion.dir/lib/LoadShaders.cpp.o
/home/usuario/workspace/src/opengl/opg_pdf/OGLPG-9th-Edition/OGLPG-9th-Edition/lib/LoadShaders.cpp: In function ‘const GLchar* ReadShader(const char*)’:
/home/usuario/workspace/src/opengl/opg_pdf/OGLPG-9th-Edition/OGLPG-9th-Edition/lib/LoadShaders.cpp:26:42: error: ‘fopen’ was not declared in this scope
FILE* infile = fopen( filename, "rb" );
^
/home/usuario/workspace/src/opengl/opg_pdf/OGLPG-9th-Edition/OGLPG-9th-Edition/lib/LoadShaders.cpp:36:23: error: ‘SEEK_END’ was not declared in this scope
fseek( infile, 0, SEEK_END );
^
/home/usuario/workspace/src/opengl/opg_pdf/OGLPG-9th-Edition/OGLPG-9th-Edition/lib/LoadShaders.cpp:36:32: error: ‘fseek’ was not declared in this scope
fseek( infile, 0, SEEK_END );
^
/home/usuario/workspace/src/opengl/opg_pdf/OGLPG-9th-Edition/OGLPG-9th-Edition/lib/LoadShaders.cpp:37:29: error: ‘ftell’ was not declared in this scope
int len = ftell( infile );
^
/home/usuario/workspace/src/opengl/opg_pdf/OGLPG-9th-Edition/OGLPG-9th-Edition/lib/LoadShaders.cpp:38:23: error: ‘SEEK_SET’ was not declared in this scope
fseek( infile, 0, SEEK_SET );
^
/home/usuario/workspace/src/opengl/opg_pdf/OGLPG-9th-Edition/OGLPG-9th-Edition/lib/LoadShaders.cpp:42:35: error: ‘fread’ was not declared in this scope
fread( source, 1, len, infile );
^
/home/usuario/workspace/src/opengl/opg_pdf/OGLPG-9th-Edition/OGLPG-9th-Edition/lib/LoadShaders.cpp:43:20: error: ‘fclose’ was not declared in this scope
fclose( infile );
^
make[2]: *** [CMakeFiles/vermilion.dir/lib/LoadShaders.cpp.o] Error 1
make[1]: *** [CMakeFiles/vermilion.dir/all] Error 2

[elmindreda]

Have a look at #5.

[alfredoivan]

Have a look at #5.

Ok, good. Now i can compile.
In my computer all example programs look black. But at least it compiles fine.

[elmindreda]

What is the output of glxinfo -B on your machine?

[alfredoivan]

The command:
$ glxinfo -B Unknown option -B'`

Without -B option and greping OpenGL:
$ glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2)
OpenGL core profile version string: 3.3 (Core Profile) Mesa 11.2.0
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 11.2.0
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:

[elmindreda]

That makes sense, thank you. Most or all of the examples for this book use OpenGL 4.x features, while your system only supports 3.3.

Mesa 11 is really old. It might help to update your operating system.

[alfredoivan]

So in summary i tried with two different computers using Ubuntu 14.04.5 and #5 help solve the issue of compiling.

However it won't execute properly because of old OpenGL version.
Thanks for your help. Closing the issue.