Several packages show this behaviour: make[1]: Entering directory `/data/users/cooker/RPM/BUILD/qt-1.44/src/moc' gcc -V egcs-2.91.66 -c -I/data/users/cooker/RPM/BUILD/qt-1.44/include -Wno-unused -Wno-parentheses -O2 -mieee -frtti -fexceptions -o mocgen.o mocgen.cpp gcc-2.96: installation problem, cannot exec `cpp0': No such file or directory make[1]: *** [mocgen.o] Error 1 make[1]: Leaving directory `/data/users/cooker/RPM/BUILD/qt-1.44/src/moc' make: *** [moc] Error 2 Bad exit status from /users/cooker/tmp/rpm-tmp.57963 (%build) What happened to cpp0?