Posix missing?

[gerke.kok at ascom.nl]

Hello,
I try to build the beta3 of RTEMS with BSP=gen68360 and get the failure:

[/usr/src/beta3/m68k-rtems/c/gen68360/exec/posix/src]$ make
/opt/rtems/bin/m68k-rtems-gcc --pipe -B../../../../../../gen68360/lib/
-specs bsp_specs -qrtems
 -g -Wall -ansi -fasm    -mcpu32     -c -D__RTEMS_INSIDE__ -O4
-fomit-frame-pointer -o o-optimi
ze/adasupp.o
../../../../../../../rtems-4.5.0-beta3/c/src/exec/posix/src/adasupp.c
../../../../../../../rtems-4.5.0-beta3/c/src/exec/posix/src/adasupp.c:7:
pthread.h: No such fil
e or directory
make: *** [o-optimize/adasupp.o] Error 1
[/usr/src/beta3/m68k-rtems/c/gen68360/exec/posix/src]$

The strange thing is: I did build the beta2 with great succes. What's
changed that this does nog work anylonger?
wkr,
Gerke