makepp
GNU make compatible but reliable and simpler build tool
... improved handling of builds that involve multiple makefiles (recursive make is no longer necessary); automatic scanning for include files; rebuild triggered if build command changes; checksum-based signature methods for reliable builds, smart enough to ignore whitespace or comment changes; extensibility through Perl programming (within your makefile); repositories (automatically importing files from another tree); build caches (not recompiling identically what a user of the same cache already did