[travis@localhost build]$ make
Checking 'bison'... ok.
Makefile:11: warning: overriding commands for target `prereq'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `prereq'
Makefile:11: warning: overriding commands for target `clean'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `clean'
Makefile:11: warning: overriding commands for target `download'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `download'
Makefile:11: warning: overriding commands for target `prepare'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `prepare'
Makefile:11: warning: overriding commands for target `compile'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `compile'
Makefile:11: warning: overriding commands for target `install'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `install'
Makefile:11: warning: overriding commands for target `menuconfig'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `menuconfig'
Makefile:11: warning: overriding commands for target `oldconfig'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `oldconfig'
Makefile:11: warning: overriding commands for target `update'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `update'
Makefile:11: warning: overriding commands for target `refresh'
/home/travis/buildbot/x86/x86-trunk/build/target/linux//Makefile:11: warning: ignoring old commands for target `refresh'
make: *** prereq: No such file or directory.  Stop.
make[4]: *** [prereq] Error 2
make[3]: *** [target/linux/prereq] Error 2
make[2]: *** [/home/travis/buildbot/x86/x86-trunk/build/staging_dir//stamp/.target_prereq] Error 2
make[1]: *** [prereq] Error 2
make: *** [world] Error 2