Running gcc version 3.4.6, linux-2.6.16-ck1 libtool --quiet --mode=link gcc -o libapm.la apmlib.lo -rpath /usr/lib -version-info 1:0 In file included from /usr/src/linux/include/linux/interrupt.h:8, from /usr/src/linux/include/linux/rtc.h:14, from apmsleep.c:47: /usr/src/linux/include/linux/bitops.h: In function `generic_fls64': /usr/src/linux/include/linux/bitops.h:84: warning: implicit declaration of function `fls' In file included from /usr/src/linux/include/linux/cpumask.h:86, from /usr/src/linux/include/linux/interrupt.h:10, from /usr/src/linux/include/linux/rtc.h:14, from apmsleep.c:47: /usr/src/linux/include/linux/bitmap.h: In function `bitmap_zero': /usr/src/linux/include/linux/bitmap.h:125: error: `BITS_PER_LONG' undeclared (first use in this function) /usr/src/linux/include/linux/bitmap.h:125: error: (Each undeclared identifier is reported only once
ck-sources is not a supported kernel. Please reopen if you are able to reproduce the issue with a supported one. http://www.gentoo.org/doc/en/gentoo-kernel.xml#doc_chap2