sdlmain.cpp:119:1: error: unknown type name 'PFNGLATTACHSHADERPROC'
PFNGLATTACHSHADERPROC glAttachShader = NULL;
^
sdlmain.cpp:120:1: error: unknown type name 'PFNGLCOMPILESHADERPROC'; did you mean 'PFNGLCOMPILESHADERARBPROC'?
PFNGLCOMPILESHADERPROC glCompileShader = NULL;
^~~~~~~~~~~~~~~~~~~~~~
PFNGLCOMPILESHADERARBPROC
/opt/x86_64/include/SDL/SDL_opengl.h:4141:25: note: 'PFNGLCOMPILESHADERARBPROC' declared here
typedef void (APIENTRYP PFNGLCOMPILESHADERARBPROC) (GLhandleARB shaderObj);
                        ^
sdlmain.cpp:120:24: error: redefinition of 'glCompileShader' as different kind of symbol
PFNGLCOMPILESHADERPROC glCompileShader = NULL;
                       ^
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl.h:2924:13: note: previous definition is here
extern void glCompileShader (GLuint shader);
            ^
sdlmain.cpp:121:1: error: unknown type name 'PFNGLCREATEPROGRAMPROC'; did you mean 'PFNGLEXECUTEPROGRAMNVPROC'?
PFNGLCREATEPROGRAMPROC glCreateProgram = NULL;
^~~~~~~~~~~~~~~~~~~~~~
PFNGLEXECUTEPROGRAMNVPROC
/opt/x86_64/include/SDL/SDL_opengl.h:5736:25: note: 'PFNGLEXECUTEPROGRAMNVPROC' declared here
typedef void (APIENTRYP PFNGLEXECUTEPROGRAMNVPROC) (GLenum target, GLuint id, const GLfloat *params);
                        ^
sdlmain.cpp:121:24: error: redefinition of 'glCreateProgram' as different kind of symbol
PFNGLCREATEPROGRAMPROC glCreateProgram = NULL;
                       ^
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl.h:2925:15: note: previous definition is here
extern GLuint glCreateProgram (void);
              ^
sdlmain.cpp:122:1: error: unknown type name 'PFNGLCREATESHADERPROC'
PFNGLCREATESHADERPROC glCreateShader = NULL;
^
sdlmain.cpp:123:1: error: unknown type name 'PFNGLDELETEPROGRAMPROC'; did you mean 'PFNGLDELETEPROGRAMSNVPROC'?
PFNGLDELETEPROGRAMPROC glDeleteProgram = NULL;
^~~~~~~~~~~~~~~~~~~~~~
PFNGLDELETEPROGRAMSNVPROC
/opt/x86_64/include/SDL/SDL_opengl.h:5735:25: note: 'PFNGLDELETEPROGRAMSNVPROC' declared here
typedef void (APIENTRYP PFNGLDELETEPROGRAMSNVPROC) (GLsizei n, const GLuint *programs);
                        ^
sdlmain.cpp:123:24: error: redefinition of 'glDeleteProgram' as different kind of symbol
PFNGLDELETEPROGRAMPROC glDeleteProgram = NULL;
                       ^
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl.h:2929:13: note: previous definition is here
extern void glDeleteProgram (GLuint program);
            ^
sdlmain.cpp:124:1: error: unknown type name 'PFNGLDELETESHADERPROC'; did you mean 'PFNGLDELETEFENCESNVPROC'?
PFNGLDELETESHADERPROC glDeleteShader = NULL;
^~~~~~~~~~~~~~~~~~~~~
PFNGLDELETEFENCESNVPROC
/opt/x86_64/include/SDL/SDL_opengl.h:5598:25: note: 'PFNGLDELETEFENCESNVPROC' declared here
typedef void (APIENTRYP PFNGLDELETEFENCESNVPROC) (GLsizei n, const GLuint *fences);
                        ^
sdlmain.cpp:124:23: error: redefinition of 'glDeleteShader' as different kind of symbol
PFNGLDELETESHADERPROC glDeleteShader = NULL;
                      ^
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl.h:2920:13: note: previous definition is here
extern void glDeleteShader (GLuint shader);
            ^
sdlmain.cpp:125:1: error: unknown type name 'PFNGLENABLEVERTEXATTRIBARRAYPROC'; did you mean 'PFNGLENABLEVERTEXATTRIBARRAYARBPROC'?
PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray = NULL;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PFNGLENABLEVERTEXATTRIBARRAYARBPROC
/opt/x86_64/include/SDL/SDL_opengl.h:4011:25: note: 'PFNGLENABLEVERTEXATTRIBARRAYARBPROC' declared here
typedef void (APIENTRYP PFNGLENABLEVERTEXATTRIBARRAYARBPROC) (GLuint index);
                        ^
sdlmain.cpp:125:34: error: redefinition of 'glEnableVertexAttribArray' as different kind of symbol
PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray = NULL;
                                 ^
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl.h:2914:13: note: previous definition is here
extern void glEnableVertexAttribArray (GLuint index);
            ^
sdlmain.cpp:126:1: error: unknown type name 'PFNGLGETATTRIBLOCATIONPROC'; did you mean 'PFNGLGETATTRIBLOCATIONARBPROC'?
PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation = NULL;
^~~~~~~~~~~~~~~~~~~~~~~~~~
PFNGLGETATTRIBLOCATIONARBPROC
/opt/x86_64/include/SDL/SDL_opengl.h:4186:26: note: 'PFNGLGETATTRIBLOCATIONARBPROC' declared here
typedef GLint (APIENTRYP PFNGLGETATTRIBLOCATIONARBPROC) (GLhandleARB programObj, const GLcharARB *name);
                         ^
sdlmain.cpp:126:28: error: redefinition of 'glGetAttribLocation' as different kind of symbol
PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation = NULL;
                           ^
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl.h:2964:14: note: previous definition is here
extern GLint glGetAttribLocation (GLuint program, const GLchar *name);
             ^
sdlmain.cpp:127:1: error: unknown type name 'PFNGLGETPROGRAMIVPROC'; did you mean 'PFNGLGETPROGRAMIVNVPROC'?
PFNGLGETPROGRAMIVPROC glGetProgramiv = NULL;
^~~~~~~~~~~~~~~~~~~~~
PFNGLGETPROGRAMIVNVPROC
/opt/x86_64/include/SDL/SDL_opengl.h:5740:25: note: 'PFNGLGETPROGRAMIVNVPROC' declared here
typedef void (APIENTRYP PFNGLGETPROGRAMIVNVPROC) (GLuint id, GLenum pname, GLint *params);
                        ^
sdlmain.cpp:127:23: error: redefinition of 'glGetProgramiv' as different kind of symbol
PFNGLGETPROGRAMIVPROC glGetProgramiv = NULL;
                      ^
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl.h:2953:13: note: previous definition is here
extern void glGetProgramiv (GLuint program, GLenum pname, GLint *params);
            ^
sdlmain.cpp:128:1: error: unknown type name 'PFNGLGETPROGRAMINFOLOGPROC'
PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog = NULL;
^
sdlmain.cpp:129:1: error: unknown type name 'PFNGLGETSHADERIVPROC'; did you mean 'PFNGLGETHANDLEARBPROC'?
PFNGLGETSHADERIVPROC glGetShaderiv = NULL;
^~~~~~~~~~~~~~~~~~~~
PFNGLGETHANDLEARBPROC
/opt/x86_64/include/SDL/SDL_opengl.h:4137:32: note: 'PFNGLGETHANDLEARBPROC' declared here
typedef GLhandleARB (APIENTRYP PFNGLGETHANDLEARBPROC) (GLenum pname);
                               ^
sdlmain.cpp:129:22: error: redefinition of 'glGetShaderiv' as different kind of symbol
PFNGLGETSHADERIVPROC glGetShaderiv = NULL;
                     ^
/opt/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl.h:2952:13: note: previous definition is here
extern void glGetShaderiv (GLuint shader, GLenum pname, GLint *params);
            ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make[3]: *** [sdlmain.o] Error 1
make[3]: *** Waiting for unfinished jobs....