Hi *, I am investigating a new problem (already reported in this list by Martin Michlmayr) about the serial device on the SGI O2. While recompiling the latest kernel I get this error: make[1]: Entering directory `/usr/local/src/kernel/linux-2.6.23' CHK include/linux/version.h CHK include/linux/utsrelease.h Checking missing-syscalls for N32 CALL scripts/checksyscalls.sh Checking missing-syscalls for O32 CALL scripts/checksyscalls.sh CALL scripts/checksyscalls.sh CHK include/linux/compile.h CC arch/mips/kernel/time.o arch/mips/kernel/time.c: In function ‘mips_clockevent_init’: arch/mips/kernel/time.c:399: error: ‘MIPS_CPU_IRQ_BASE’ undeclared (first use in this function) arch/mips/kernel/time.c:399: error: (Each undeclared identifier is reported only once arch/mips/kernel/time.c:399: error: for each function it appears in.) make[2]: *** [arch/mips/kernel/time.o] Error 1 make[1]: *** [arch/mips/kernel] Error 2 make[1]: Leaving directory `/usr/local/src/kernel/linux-2.6.23' make: *** [debian/stamp-build-kernel] Error 2 But I don't know what to do. Is this a #define missing for ip32? Bye, Giuseppe