* Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found sources for kernel version:
 *     2.6.27-gentoo-r2
>>> Unpacking source...
>>> Unpacking usbirboy-0.3.1.tar.gz to /var/tmp/portage/app-misc/usbirboy-0.3.1/work
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/app-misc/usbirboy-0.3.1/work/usbirboy-0.3.1/usbirboykmod ...
ln: creating symbolic link `Module.symvers': File exists
 * Preparing usbirboy module
make -j14 HOSTCC=i686-pc-linux-gnu-gcc CROSS_COMPILE=i686-pc-linux-gnu- LDFLAGS= INCLUDE=/usr/src/linux clean all 
rm -rf *.o *.ko *.mod.* .[a-z]* core *.i *.symvers
make -C /lib/modules/2.6.27-gentoo-r4/build /usr/src/linux SUBDIRS=/var/tmp/portage/app-misc/usbirboy-0.3.1/work/usbirboy-0.3.1/usbirboykmod modules
make: *** /lib/modules/2.6.27-gentoo-r4/build: No such file or directory.  Stop.
make: *** [all] Error 2
make: *** Waiting for unfinished jobs....
 * 
 * ERROR: app-misc/usbirboy-0.3.1 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 3280:  Called linux-mod_src_compile
 *             environment, line 2520:  Called die
 * The specific snippet of code:
 *               eval "emake HOSTCC="$(tc-getBUILD_CC)" 						CROSS_COMPILE=${CHOST}- 						LDFLAGS="$(get_abi_LDFLAGS)" 						${BUILD_FIXES} 						${BUILD_PARAMS} 						${BUILD_TARGETS} " || die "Unable to emake HOSTCC="$(tc-getBUILD_CC)" CROSS_COMPILE=${CHOST}- LDFLAGS="$(get_abi_LDFLAGS)" ${BUILD_FIXES} ${BUILD_PARAMS} ${BUILD_TARGETS}";
 *  The die message:
 *   Unable to emake HOSTCC=i686-pc-linux-gnu-gcc CROSS_COMPILE=i686-pc-linux-gnu- LDFLAGS=  INCLUDE=/usr/src/linux clean all
 * 
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/log/portage/app-misc/usbirboy-0.3.1:20081204-103027.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-misc/usbirboy-0.3.1/temp/environment'.
 *