死活通不过，patch怎么用

newsky_

metabar这个东西我怎么招都编译通不过，这个网站上找的有patch可不是有什么用?

http://ftp.uwc.ac.za/mirror/gentoo-portage/kde-misc/metabar/
错误如下：
metabarwidget.cpp: In member function ‘void MetabarWidget::handleURLRequest(const KURL&, const KParts::URLArgs&)’:
metabarwidget.cpp:372: error: unknown escape sequence '\p'
metabarwidget.cpp: At global scope:
metabarwidget.cpp:473: warning: unused parameter ‘url’
make[2]: *** [metabarwidget.lo] Error 1
make[2]: Leaving directory `/var/tmp/portage/kde-misc/metabar-0.8/work/metabar/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/kde-misc/metabar-0.8/work/metabar'
make: *** [all] Error 2
*
* ERROR: kde-misc/metabar-0.8 failed.
* Call stack:
*    ebuild.sh, line 1695:  Called dyn_compile
*    ebuild.sh, line 1033:  Called qa_call 'src_compile'
*    ebuild.sh, line   44:  Called src_compile
*    ebuild.sh, line 1377:  Called kde_src_compile
*   kde.eclass, line  170:  Called kde_src_compile 'all'
*   kde.eclass, line  340:  Called kde_src_compile 'myconf' 'configure' 'make'
*   kde.eclass, line  336:  Called die
* The specific snippet of code:
*                              emake || die "died running emake, $FUNCNAME:make"
*  The die message:
*   died running emake, kde_src_compile:make