localhost ~ # emerge spca5xx
Calculating dependencies... done!
>>> Verifying ebuild Manifests...

>>> Emerging (1 of 1) media-video/spca5xx-20060501-r2 to /
 * spca5xx-20060501.tar.gz RMD160 ;-) ...                                 [ ok ]
 * spca5xx-20060501.tar.gz SHA1 ;-) ...                                   [ ok ]
 * spca5xx-20060501.tar.gz SHA256 ;-) ...                                 [ ok ]
 * spca5xx-20060501.tar.gz size ;-) ...                                   [ ok ]
 * checking ebuild checksums ;-) ...                                      [ ok ]
 * checking auxfile checksums ;-) ...                                     [ ok ]
 * checking miscfile checksums ;-) ...                                    [ ok ]
 * checking spca5xx-20060501.tar.gz ;-) ...                               [ ok ]
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found kernel object directory:
 *     /lib/modules/2.6.22-sabayon/build
 * Found sources for kernel version:
 *     2.6.22-sabayon
 * Checking for suitable kernel configuration options...                  [ ok ]
>>> Unpacking source...
>>> Unpacking spca5xx-20060501.tar.gz to /var/tmp/portage/media-video/spca5xx-20060501-r2/work
tar: spca5xx-20060501/drivers: implausibly old time stamp 1970-01-01 00:00:00
 * Converting spca5xx-20060501/Makefile to use M= instead of SUBDIRS= ..  [ ok ]
 * Applying spca-20060501-defines.patch ...                               [ ok ]
 * Applying spca-20060501-2.6.18.patch ...                                [ ok ]
 * Applying spca-20060501-LogitechQC92f.patch ...                         [ ok ]
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501 ...
 * Preparing spca5xx module
   Building SPCA5XX driver for 2.5/2.6 kernel.
   Remember: you must have read/write access to your kernel source tree.
/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spca5xx.c:39:26: error: linux/config.h: No such file or directory
/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spcadecoder.c: In function ‘fun_D’:
/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spcadecoder.c:809: warning: value computed is not used
/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spca5xx.c: In function ‘spca50x_init_isoc’:
/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spca5xx.c:1624: warning: assignment from incompatible pointer type
/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spca5xx.c: In function ‘spca50x_create_sysfs’:
/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spca5xx.c:3451: warning: ignoring return value of ‘video_device_create_file’, declared with attribute warn_unused_result
/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spca5xx.c:3452: warning: ignoring return value of ‘video_device_create_file’, declared with attribute warn_unused_result
/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spca5xx.c:3453: warning: ignoring return value of ‘video_device_create_file’, declared with attribute warn_unused_result
make[2]: *** [/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501/drivers/usb/spca5xx.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [_module_/var/tmp/portage/media-video/spca5xx-20060501-r2/work/spca5xx-20060501] Error 2
make: *** [default] Error 2
 *
 * ERROR: media-video/spca5xx-20060501-r2 failed.
 * Call stack:
 *   ebuild.sh, line 1648:   Called dyn_compile
 *   ebuild.sh, line 988:   Called qa_call 'src_compile'
 *   ebuild.sh, line 44:   Called src_compile
 *   ebuild.sh, line 1328:   Called linux-mod_src_compile
 *   linux-mod.eclass, line 516:   Called die
 *
 * Unable to make  KERNELDIR=/usr/src/linux default.
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/media-video/spca5xx-20060501-r2/temp/build.log'.
 *

 * Messages for package media-video/spca5xx-20060501-r2:

 *
 * ERROR: media-video/spca5xx-20060501-r2 failed.
 * Call stack:
 *   ebuild.sh, line 1648:   Called dyn_compile
 *   ebuild.sh, line 988:   Called qa_call 'src_compile'
 *   ebuild.sh, line 44:   Called src_compile
 *   ebuild.sh, line 1328:   Called linux-mod_src_compile
 *   linux-mod.eclass, line 516:   Called die
 *
 * Unable to make  KERNELDIR=/usr/src/linux default.
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/media-video/spca5xx-20060501-r2/temp/build.log'.
 *