4.1 Command-Line Options

The following options are useful for debugging makefiles that do not work correctly:

• The -#1 option displays each makefile line as it is parsed. Blank and comment lines are removed, and conditional directives are shown in normal, expanded, and evaluated forms.

• The -p option displays omake's internal information. With this option, you can examine the following:

• The values of all macros, to see where they were defined. Make sure they have the correct values.

• All targets, their attributes, and their build scripts, to see where they were defined. This list also shows which target is the default target.

• The inference rules, to see the rules known to omake.

• The -d option prints a run-time trace of omake. With this option, you can do the following:

• Ensure that the correct initialization file and makefile are being read.

• Watch omake use configuration lookup to compare the target to each dependency.

• Watch omake search for inferred dependencies by using inference rules. Ensure that omake attempts the inference rules you have defined. Cross-check with the -p flag.

For additional help with macros, the .DEBUG : 2 directive (-#2 option) causes omake to print a warning if a macro is used without being defined.

Finally, the .DEBUG : 4 directive (-#4 option) warns about makefile lines that omake does not know how to handle. This can catch misspellings of directives that you may have a hard time detecting. This directive is especially useful if you are trying to use a makefile from some other make utility.