You need to 'cvs up -dAP' to get some directories that were added to the build.
 You'll then need to do a full build.  That should fix it.  If not, reopen the
bug and add some more description of what happened.

I have done "cvs up -dAP" and a full build with the same result. Then, I 
deleted the whole CVS tree: I deleted Mesa, xc and drm and downloaded again 
the whole tree, then compiled and installed, and the fail was the same. 
 
I have found that if I delete the line "SRC_DIRS = mesa" from linux-dri-x86, 
then Mesa compiles without errors. This makes mach64_dri.so and also 
demodriver.so, libGLw.so.1.0.0, libglut.so.3.7.1, libGLU.so.1.3.060301, 
libGL.so.1.2, libEGL.so.1.0, libEGLdri.so.1.0 and other symlinks to these 
files. Should these files be installed also? If they must be installed, dri 
wiki building should be changed. 
 
I have an ATI Rage Mobility-M AGP 2X card in a Dell Inspiron 3700 and 
Mandrake-linux 10.1 

(In reply to comment #2)

> I have found that if I delete the line "SRC_DIRS = mesa" from linux-dri-x86, 
> then Mesa compiles without errors.

That would be because having 'SRC_DIRS = mesa' prevented libEGL from being
built.  I have recently (just a few minutes ago) changed the build to not link
DRI drivers with libGL, libEGL, or libEGLdri.  That should eliminate this
problem.  I'm going to close it again, and hopefully this time it can stay
closed. :)

Seems to NOT enough: 
 
progs/demos> ./gears 
libGL error: dlopen /usr/X11R6/lib/modules/dri/r200_dri.so failed 
(/usr/X11R6/lib/modules/dri/r200_dri.so: undefined symbol: _eglFillInConfigs) 
libGL error: unable to find driver: r200_dri.so 
 
BTW Current DRM do NOT compile on my system (SuSE kernel 2.6.5-7.155.29-smp; yah older 
but all DRM versions before worked) 
 
drm/linux-core> time nice +19 make -j20 radeon.o 
make DRM_MODULES=radeon.o modules 
make[1]: Entering directory `/opt/drm/linux-core' 
make[1]: Warnung: Kein Jobserver verfügbar: setzen -j1. Fügen »+« zur Ursprungsregel 
hinzu. 
make -C /lib/modules/2.6.5-7.155.29-smp/source  SUBDIRS=`pwd` DRMSRCDIR=`pwd` 
modules 
make[2]: Entering directory `/usr/src/linux-2.6.5-7.155.29' 
  CC [M]  /opt/drm/linux-core/drm_sysfs.o 
/opt/drm/linux-core/drm_sysfs.c:130: Warnung: implicit declaration of function `__ATTR' 
/opt/drm/linux-core/drm_sysfs.c:130: error: `dri_library_name' undeclared here (not in a 
function) 
/opt/drm/linux-core/drm_sysfs.c:130: Warnung: missing braces around initializer 
/opt/drm/linux-core/drm_sysfs.c:130: Warnung: (near initialization for `class_device_attrs[0]') 
/opt/drm/linux-core/drm_sysfs.c:130: error: initializer element is not constant 
/opt/drm/linux-core/drm_sysfs.c:130: error: (near initialization for 
`class_device_attrs[0].attr.name') 
/opt/drm/linux-core/drm_sysfs.c:131: error: initializer element is not constant 
/opt/drm/linux-core/drm_sysfs.c:131: error: (near initialization for 
`class_device_attrs[0].attr') 
/opt/drm/linux-core/drm_sysfs.c:131: error: initializer element is not constant 
/opt/drm/linux-core/drm_sysfs.c:131: error: (near initialization for `class_device_attrs[0]') 
make[3]: *** [/opt/drm/linux-core/drm_sysfs.o] Fehler 1 
make[2]: *** [_module_/opt/drm/linux-core] Fehler 2 
make[2]: Leaving directory `/usr/src/linux-2.6.5-7.155.29' 
make[1]: *** [modules] Fehler 2 
make[1]: Leaving directory `/opt/drm/linux-core' 
make: *** [radeon.o] Fehler 2 
0.393u 0.169s 0:00.55 100.0%    0+0k 0+0io 0pf+0w 
 

Now, the driver  compiles in my system (anyway, bug 3956 remains). But 
compilation ends with error message, that I  suppose it is not related to the 
driver to be installed. This is the end of the output: 
 
rm -f mach64_dri.so 
gcc -m32 -o mach64_dri.so 
-shared ../../common/driverfuncs.o ../common/mm.o ../common/utils.o ../common/texmem.o ../common/vblank.o ../common/dri_util.o ../common/xmlconfig.o ../common/drirenderbuffer.o 
mach64_context.o mach64_ioctl.o mach64_screen.o mach64_span.o mach64_state.o 
mach64_tex.o mach64_texmem.o mach64_texstate.o mach64_tris.o mach64_vb.o 
mach64_dd.o mach64_lock.o   ../../../../../src/mesa/mesa.a ../dri_client/dri.a 
-L/usr/X11R6/lib -lm -lpthread -lexpat -ldl 
install mach64_dri.so ../../../../../lib 
make[6]: Leaving directory `/descargas/xorg/Mesa/src/mesa/drivers/dri/mach64' 
make[5]: Leaving directory `/descargas/xorg/Mesa/src/mesa/drivers/dri' 
make[4]: Leaving directory `/descargas/xorg/Mesa/src/mesa' 
make[3]: Leaving directory `/descargas/xorg/Mesa/src/mesa' 
make[2]: Leaving directory `/descargas/xorg/Mesa/src' 
make[2]: Entering directory `/descargas/xorg/Mesa/progs' 
Making programs for linux-dri-x86 
make[3]: Entering directory `/descargas/xorg/Mesa/progs/egl' 
gcc -c -Wall   -m32 -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_SVID_SOURCE 
-D_BSD_SOURCE-D_GNU_SOURCE -DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1 
-DIN_DRI_DRIVER -DGLX_DIRECT_RENDERING -DHAVE_ALIAS -DUSE_X86_ASM 
-DUSE_MMX_ASM -DUSE_3DNOW_ASM -DUSE_SSE_ASM -std=c99 -ffast-math 
-I../../include demo1.c 
make[3]: *** No hay ninguna regla para construir el objetivo 
`../../lib/libEGL.so', necesario para `demo1'.  Alto. 
make[3]: Leaving directory `/descargas/xorg/Mesa/progs/egl' 
make[2]: *** [subdirs] Error 1 
make[2]: Leaving directory `/descargas/xorg/Mesa/progs' 
make[1]: *** [default] Error 1 
make[1]: Leaving directory `/descargas/xorg/Mesa' 
make: *** [linux-dri-x86] Error 2 
 

(In reply to comment #5) 
I forgot to say something: "make clean" does not delete the drivers in 
Mesa/lib and it is necessary to delete  manually delete  them before a  new 
compilation. 

Since you are manually disabling building libEGL, why are you trying to build
the EGL demos?  I call that operator error. :)  I'm closing this for good. 
These are clearly different problems that are caused by you trying to do
advanced build tricks without advanced build knowledged.  Sorry.