Gentoo's Bugzilla –
Attachment 330760 Details for
Bug 444986x11-libs/qt-mobility-1.2.2_p20120403 - In member function 'bool QtMobility::QSystemScreenSaverPrivate::setScreenSaverInhibit()': linux/qsysteminfo_linux.cpp:706:35: error: 'getppid' was not declared in this scope