Problems With Other Systems

• Explicit dependencies

  • Users and hacks like makedepend get them wrong
  • Some are inexpressible (i.e. “file X doesn't exist”)

• Barriers to truly incremental builds

  • Incomplete dependencies cause users to periodically build from scratch (i.e. “make clean”)
  • User A builds version N of source X; user B often has to perform the same build step even if it would be correct to use a partial result from user A's build

Notes: