In file included from /usr/src/zaptel/zaptel.c:40:
/usr/src/zaptel/zconfig.h:10:27: linux/version.h: No such file or directory
/usr/src/zaptel/zconfig.h:66:41: missing binary operator before token "("
/usr/src/zaptel/zconfig.h:74:41: missing binary operator before token "("
/usr/src/zaptel/zconfig.h:77:41: missing binary operator before token "("
/usr/src/zaptel/zconfig.h:82:41: missing binary operator before token "("
In file included from include/linux/kernel.h:11,
                 from /usr/src/zaptel/zaptel.c:42:
include/linux/linkage.h:5:25: asm/linkage.h: No such file or directory
In file included from include/linux/posix_types.h:47,
                 from include/linux/types.h:13,
                 from include/linux/kernel.h:13,
                 from /usr/src/zaptel/zaptel.c:42:
/usr/lib/gcc-lib/i486-linux/3.3.5/include/asm/posix_types.h:13:22: features.h: No such file or directory

************** but I have: **************
ermes:/usr/src/linux# find / -name version.h
/usr/src/kernel-source-2.6.9/arch/i386/math-emu/version.h
/usr/src/kernel-source-2.6.9/include/linux/dvb/version.h
/usr/src/kernel-source-2.6.9/include/sound/version.h
/usr/src/kernel-source-2.6.9/include/pcmcia/version.h
/usr/src/kernel-headers-2.6.9-1-686/include/linux/version.h
/usr/src/kernel-headers-2.6.9-1/include/linux/dvb/version.h
/usr/src/kernel-headers-2.6.9-1/include/linux/version.h
/usr/src/kernel-headers-2.6.9-1/include/sound/version.h
/usr/src/kernel-headers-2.6.9-1/include/pcmcia/version.h
/usr/include/linux/dvb/version.h
/usr/include/linux/version.h