The glslnoise demo uses wglGetProcAddress directly and the Makefile has an
error. Inlined is patch that fixes the problem:

Index: Makefile
===================================================================
RCS file: /cvs/mesa/Mesa/progs/demos/Makefile,v
retrieving revision 1.16
diff -r1.16 Makefile
33c33
< 	glslnoise.c \
---
> 	glslnoise \
Index: glslnoise.c
===================================================================
RCS file: /cvs/mesa/Mesa/progs/demos/glslnoise.c,v
retrieving revision 1.2
diff -r1.2 glslnoise.c
127,133c127,133
< 	glCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC) wglGetProcAddress
("glCreateShaderObjectARB");
< 	glShaderSourceARB = (PFNGLSHADERSOURCEARBPROC) wglGetProcAddress
("glShaderSourceARB");
< 	glCompileShaderARB = (PFNGLCOMPILESHADERARBPROC) wglGetProcAddress
("glCompileShaderARB");
< 	glCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC)
wglGetProcAddress ("glCreateProgramObjectARB");
< 	glAttachObjectARB = (PFNGLATTACHOBJECTARBPROC) wglGetProcAddress
("glAttachObjectARB");
< 	glLinkProgramARB = (PFNGLLINKPROGRAMARBPROC) wglGetProcAddress
("glLinkProgramARB");
< 	glUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC) wglGetProcAddress
("glUseProgramObjectARB");
---
> 	glCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC) GETPROCADDRESS
("glCreateShaderObjectARB");
> 	glShaderSourceARB = (PFNGLSHADERSOURCEARBPROC) GETPROCADDRESS
("glShaderSourceARB");
> 	glCompileShaderARB = (PFNGLCOMPILESHADERARBPROC) GETPROCADDRESS
("glCompileShaderARB");
> 	glCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC) GETPROCADDRESS
("glCreateProgramObjectARB");
> 	glAttachObjectARB = (PFNGLATTACHOBJECTARBPROC) GETPROCADDRESS
("glAttachObjectARB");
> 	glLinkProgramARB = (PFNGLLINKPROGRAMARBPROC) GETPROCADDRESS ("glLinkProgramARB");
> 	glUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC) GETPROCADDRESS
("glUseProgramObjectARB");