Someone

render -I../../randr -I../../fb  -march=i686 -O2 -fomit-frame-pointer -pipe  -Wl,-z,lazy -o Xvfb  InitInput.o InitOutput.o dpmsstubs.o stubs.o miinitext.o fbcmap.o ../../dix/libdix.la ../../fb/libfb.la ../../mi/libmi.la ../../xfixes/libxfixes.la ../../Xext/libXext.la ../../dbe/libdbe.la ../../XTrap/libxtrap.la ../../record/librecord.la ../../GL/glx/libglx.la ../../GL/mesa/libGLcore.la -lpthread ../../render/librender.la ../../randr/librandr.la ../../damageext/libdamageext.la
../../miext/damage/libdamage.la ../../miext/cw/libcw.la ../../miext/shadow/libshadow.la ../../Xi/libXi.la ../../xkb/libxkb.la ../../xkb/libxkbstubs.la  ../../composite/libcomposite.la ../../dix/libxpstubs.la ../../os/libcwrapper.la ../../os/libos.la -lXfont -lXau -lfontenc -lXdmcp    -lm -lz   -lm
mkdir .libs
i686-pc-linux-gnu-gcc -DHAVE_DIX_CONFIG_H -DNO_HW_ONLY_EXTS -DNO_MODULE_EXTS -DXFree86Server -Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -fno-strict-aliasing -D_BSD_SOURCE -DHAS_FCHOWN -DHAS_STICKY_DIR_BIT -I../../include -I../../include -I../../Xext -I../../composite -I../../damageext -I../../xfixes -I../../Xi -I../../mi -I../../miext/shadow -I../../miext/damage -I../../render -I../../randr -I../../fb -march=i686 -O2 -fomit-frame-pointer -pipe -Wl,-z -Wl,lazy -o Xvfb InitInput.o InitOutput.o dpmsstubs.o stubs.o miinitext.o fbcmap.o  ../../dix/.libs/libdix.a ../../fb/.libs/libfb.a ../../mi/.libs/libmi.a ../../xfixes/.libs/libxfixes.a ../../Xext/.libs/libXext.a ../../dbe/.libs/libdbe.a ../../XTrap/.libs/libxtrap.a ../../record/.libs/librecord.a ../../GL/glx/.libs/libglx.a ../../GL/mesa/.libs/libGLcore.a -lpthread ../../render/.libs/librender.a ../../randr/.libs/librandr.a ../../damageext/.libs/libdamageext.a ../../miext/damage/.libs/libdamage.a ../../miext/cw/.libs/libcw.a ../../miext/shadow/.libs/libshadow.a ../../Xi/.libs/libXi.a ../../xkb/.libs/libxkb.a ../../xkb/.libs/libxkbstubs.a ../../composite/.libs/libcomposite.a ../../dix/.libs/libxpstubs.a ../../os/.libs/libcwrapper.a ../../os/.libs/libos.a /usr/lib/libXfont.so /usr/lib/libfreetype.so /usr/lib/libXau.so /usr/lib/libfontenc.so /usr/lib/libXdmcp.so -lz -lm
../../GL/mesa/.libs/libGLcore.a(driverfuncs.o): In function `_mesa_init_driver_functions':
driverfuncs.c:(.text+0x4d2): undefined reference to `_mesa_new_array_object'
driverfuncs.c:(.text+0x4de): undefined reference to `_mesa_delete_array_object'
../../GL/mesa/.libs/libGLcore.a(context.o): In function `delete_arrayobj_cb':
context.c:(.text+0x41f): undefined reference to `_mesa_delete_array_object'
../../GL/mesa/.libs/libGLcore.a(context.o): In function `_mesa_free_context_data':
context.c:(.text+0x1d21): undefined reference to `_mesa_delete_array_object'
../../GL/mesa/.libs/libGLcore.a(dlist.o): In function `_mesa_init_dlist_table':
dlist.c:(.text+0x14c8f): undefined reference to `_mesa_BindVertexArrayAPPLE'
dlist.c:(.text+0x14c9b): undefined reference to `_mesa_DeleteVertexArraysAPPLE'
dlist.c:(.text+0x14ca7): undefined reference to `_mesa_GenVertexArraysAPPLE'
dlist.c:(.text+0x14cb3): undefined reference to `_mesa_IsVertexArrayAPPLE'
../../GL/mesa/.libs/libGLcore.a(state.o): In function `_mesa_init_exec_table':
state.c:(.text+0xf3b): undefined reference to `_mesa_BindVertexArrayAPPLE'
state.c:(.text+0xf47): undefined reference to `_mesa_DeleteVertexArraysAPPLE'
state.c:(.text+0xf53): undefined reference to `_mesa_GenVertexArraysAPPLE'
state.c:(.text+0xf5f): undefined reference to `_mesa_IsVertexArrayAPPLE'
../../GL/mesa/.libs/libGLcore.a(varray.o): In function `_mesa_init_varray':
varray.c:(.text+0x1ca4): undefined reference to `_mesa_new_array_object'
../../GL/mesa/.libs/libGLcore.a(attrib.o): In function `_mesa_PopClientAttrib':
attrib.c:(.text+0x35b2): undefined reference to `_mesa_BindVertexArrayAPPLE'
collect2: ld returned 1 exit status
distcc[28019] ERROR: compile (null) on localhost failed
make[3]: *** [Xvfb] Error 1
make[3]: Leaving directory `/var/tmp/portage/xorg-server-1.1.1-r2/work/xorg-server-1.1.1/hw/vfb'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/var/tmp/portage/xorg-server-1.1.1-r2/work/xorg-server-1.1.1/hw/vfb'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/xorg-server-1.1.1-r2/work/xorg-server-1.1.1/hw'
make: *** [all-recursive] Error 1

!!! ERROR: x11-base/xorg-server-1.1.1-r2 failed.
Call stack:
  ebuild.sh, line 1543:   Called dyn_compile
  ebuild.sh, line 938:   Called src_compile
  ebuild.sh, line 1252:   Called x-modular_src_compile
  x-modular.eclass, line 331:   Called x-modular_src_make
  x-modular.eclass, line 326:   Called die

!!! emake failed
!!! If you need support, post the topmost build error, and the call stack if relevant.

!!! This ebuild is from an overlay: '/usr/portage/local/layman/portage-xgl'