>>> Emerging (1 of 26) kde-base/okular-4.0.2 to /
 * kdegraphics-4.0.2.tar.bz2 RMD160 SHA1 SHA256 size ;-) ...              [ ok ]
 * checking ebuild checksums ;-) ...                                      [ ok ]
 * checking auxfile checksums ;-) ...                                     [ ok ]
 * checking miscfile checksums ;-) ...                                    [ ok ]
 * checking kdegraphics-4.0.2.tar.bz2 ;-) ...                             [ ok ]
>>> Unpacking source...
Unpacking parts of kdegraphics-4.0.2.tar.bz2 to /var/tmp/portage/kde-base/okular-4.0.2/work

 * Cannot find $EPATCH_SOURCE!  Value for $EPATCH_SOURCE is:
 *
 *   /usr/portage/kde-base/okular/files/kdegraphics-4.0.1-system-libspectre.patch
 *   ( kdegraphics-4.0.1-system-libspectre.patch )

 *
 * ERROR: kde-base/okular-4.0.2 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_unpack
 *             environment, line 2805:  Called kde4-meta_src_unpack
 *             environment, line 2232:  Called kde4-meta_src_extract
 *             environment, line 2197:  Called kde4-base_src_unpack
 *             environment, line 1998:  Called kde4-base_apply_patches
 *             environment, line 1883:  Called base_src_unpack 'src_unpack'
 *             environment, line  378:  Called epatch 'src_unpack'
 *             environment, line 1350:  Called die
 * The specific snippet of code:
 *                   die "Cannot find \$EPATCH_SOURCE!";
 *  The die message:
 *   Cannot find $EPATCH_SOURCE!
 *
 * 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/kde-base/okular-4.0.2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/kde-base/okular-4.0.2/temp/environment'.
 *