Mac OS X 10.7.4 Build Error

src ghost$ make -f Makefile.simple --debug
GNU Make 3.81
Copyright (C) 2006  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

This program built for i386-apple-darwin11.3.0
Reading makefiles...
Updating goal targets....
 File `all' does not exist.
   File `../bin/openxcom' does not exist.
     File `../obj/main.o' does not exist.
    Must remake target `../obj/main.o'.
c++ -Wall -Wextra -O2 -rdynamic  -D_GNU_SOURCE=1 -D_THREAD_SAFE -I/usr/local/include/SDL -I/usr/local/Cellar/yaml-cpp/0.5.0/include  -c -o ../obj/main.o main.cpp
clang: warning: argument unused during compilation: '-rdynamic'
In file included from main.cpp:23:
In file included from ./Engine/Screen.h:24:
./Engine/OpenGL.h:24:8: error: unknown type name 'PFNGLCREATEPROGRAMPROC'; did you mean 'PFNGLEXECUTEPROGRAMNVPROC'?
extern PFNGLCREATEPROGRAMPROC glCreateProgram;
       ^~~~~~~~~~~~~~~~~~~~~~
       PFNGLEXECUTEPROGRAMNVPROC
/usr/local/include/SDL/SDL_opengl.h:5736:25: note: 'PFNGLEXECUTEPROGRAMNVPROC' declared here
typedef void (APIENTRYP PFNGLEXECUTEPROGRAMNVPROC) (GLenum target, GLuint id, const GLfloat *params);
                        ^
In file included from main.cpp:23:
In file included from ./Engine/Screen.h:24:
./Engine/OpenGL.h:25:8: error: unknown type name 'PFNGLUSEPROGRAMPROC'; did you mean 'PFNGLISPROGRAMNVPROC'?
extern PFNGLUSEPROGRAMPROC glUseProgram;
       ^~~~~~~~~~~~~~~~~~~
       PFNGLISPROGRAMNVPROC
/usr/local/include/SDL/SDL_opengl.h:5747:30: note: 'PFNGLISPROGRAMNVPROC' declared here
typedef GLboolean (APIENTRYP PFNGLISPROGRAMNVPROC) (GLuint id);
                             ^
In file included from main.cpp:23:
In file included from ./Engine/Screen.h:24:
./Engine/OpenGL.h:26:8: error: unknown type name 'PFNGLCREATESHADERPROC'
extern PFNGLCREATESHADERPROC glCreateShader;
       ^
./Engine/OpenGL.h:27:8: error: unknown type name 'PFNGLDELETESHADERPROC'; did you mean 'PFNGLDELETEFENCESNVPROC'?
extern PFNGLDELETESHADERPROC glDeleteShader;
       ^~~~~~~~~~~~~~~~~~~~~
       PFNGLDELETEFENCESNVPROC
/usr/local/include/SDL/SDL_opengl.h:5598:25: note: 'PFNGLDELETEFENCESNVPROC' declared here
typedef void (APIENTRYP PFNGLDELETEFENCESNVPROC) (GLsizei n, const GLuint *fences);
                        ^
In file included from main.cpp:23:
In file included from ./Engine/Screen.h:24:
./Engine/OpenGL.h:28:8: error: unknown type name 'PFNGLSHADERSOURCEPROC'; did you mean 'PFNGLSHADERSOURCEARBPROC'?
extern PFNGLSHADERSOURCEPROC glShaderSource;
       ^~~~~~~~~~~~~~~~~~~~~
       PFNGLSHADERSOURCEARBPROC
/usr/local/include/SDL/SDL_opengl.h:4140:25: note: 'PFNGLSHADERSOURCEARBPROC' declared here
typedef void (APIENTRYP PFNGLSHADERSOURCEARBPROC) (GLhandleARB shaderObj, GLsizei count, const GLcharARB* *string, const GLint *length);
                        ^
In file included from main.cpp:23:
In file included from ./Engine/Screen.h:24:
./Engine/OpenGL.h:29:8: error: unknown type name 'PFNGLCOMPILESHADERPROC'; did you mean 'PFNGLCOMPILESHADERARBPROC'?
extern PFNGLCOMPILESHADERPROC glCompileShader;
       ^~~~~~~~~~~~~~~~~~~~~~
       PFNGLCOMPILESHADERARBPROC
/usr/local/include/SDL/SDL_opengl.h:4141:25: note: 'PFNGLCOMPILESHADERARBPROC' declared here
typedef void (APIENTRYP PFNGLCOMPILESHADERARBPROC) (GLhandleARB shaderObj);
                        ^
In file included from main.cpp:23:
In file included from ./Engine/Screen.h:24:
./Engine/OpenGL.h:30:8: error: unknown type name 'PFNGLATTACHSHADERPROC'
extern PFNGLATTACHSHADERPROC glAttachShader;
       ^
./Engine/OpenGL.h:31:8: error: unknown type name 'PFNGLDETACHSHADERPROC'
extern PFNGLDETACHSHADERPROC glDetachShader;
       ^
./Engine/OpenGL.h:32:8: error: unknown type name 'PFNGLLINKPROGRAMPROC'; did you mean 'PFNGLLINKPROGRAMARBPROC'?
extern PFNGLLINKPROGRAMPROC glLinkProgram;
       ^~~~~~~~~~~~~~~~~~~~
       PFNGLLINKPROGRAMARBPROC
/usr/local/include/SDL/SDL_opengl.h:4144:25: note: 'PFNGLLINKPROGRAMARBPROC' declared here
typedef void (APIENTRYP PFNGLLINKPROGRAMARBPROC) (GLhandleARB programObj);
                        ^
In file included from main.cpp:23:
In file included from ./Engine/Screen.h:24:
./Engine/OpenGL.h:33:8: error: unknown type name 'PFNGLGETUNIFORMLOCATIONPROC'; did you mean 'PFNGLGETUNIFORMLOCATIONARBPROC'?
extern PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~
       PFNGLGETUNIFORMLOCATIONARBPROC
/usr/local/include/SDL/SDL_opengl.h:4170:26: note: 'PFNGLGETUNIFORMLOCATIONARBPROC' declared here
typedef GLint (APIENTRYP PFNGLGETUNIFORMLOCATIONARBPROC) (GLhandleARB programObj, const GLcharARB *name);
                         ^
In file included from main.cpp:23:
In file included from ./Engine/Screen.h:24:
./Engine/OpenGL.h:34:8: error: unknown type name 'PFNGLUNIFORM1IPROC'; did you mean 'PFNGLUNIFORM1IARBPROC'?
extern PFNGLUNIFORM1IPROC glUniform1i;
       ^~~~~~~~~~~~~~~~~~
       PFNGLUNIFORM1IARBPROC
/usr/local/include/SDL/SDL_opengl.h:4151:25: note: 'PFNGLUNIFORM1IARBPROC' declared here
typedef void (APIENTRYP PFNGLUNIFORM1IARBPROC) (GLint location, GLint v0);
                        ^
In file included from main.cpp:23:
In file included from ./Engine/Screen.h:24:
./Engine/OpenGL.h:35:8: error: unknown type name 'PFNGLUNIFORM2FVPROC'
extern PFNGLUNIFORM2FVPROC glUniform2fv;
       ^
./Engine/OpenGL.h:36:8: error: unknown type name 'PFNGLUNIFORM4FVPROC'
extern PFNGLUNIFORM4FVPROC glUniform4fv;
       ^
13 errors generated.
make: *** [../obj/main.o] Error 1