Source trees

Cleanup

Rule: make clean in a pristine source tree ought be idempotent

• Never remove controlled files as part of a make clean
• Never build files as part of a make clean
  • svn status --no-ignore ought generate the same output across multiple clean runs

Generated files

Rule: make all in a pristine source tree oughtn't change files in source control

• Don't keep generated files in source control
  • It ought be possible to write a make clean which operates entirely based off "ignore" properties

Rule: make all oughtn't generate files unknown to source control

• Use source control systems' "ignore" capabilities
  • svn status oughtn't generate output following a make all