Asterisk 1.6.1 auf Opensuse 11.1

inux-26ih:/usr/src/Asterisk/libpri-1.4.10 # make
gcc -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes -g -fPIC   -MD -MT pri.o -MF .pri.o.d -MP -c -o pri.o pri.c
In file included from /usr/include/errno.h:36,
                 from pri.c:33:
/usr/include/bits/errno.h:25:26: error: linux/errno.h: No such file or directory
pri.c: In function ‘__pri_read’:
pri.c:177: error: ‘EAGAIN’ undeclared (first use in this function)
pri.c:177: error: (Each undeclared identifier is reported only once
pri.c:177: error: for each function it appears in.)
pri.c: In function ‘__pri_write’:
pri.c:188: error: ‘EAGAIN’ undeclared (first use in this function)
make: *** [pri.o] Error 1