Re: [bug #18617] Better debugging facilities: tracing rule invocation.

[Stefano Sabatini]

In data mercoledì 2008-09-17 14:26:33 +0000, Dave Korn ha scritto:
> 
> Follow-up Comment #5, bug #18617 (project make):
> 
> I would like to draw the attention of everyone in this thread to
> 
> http://bashdb.sourceforge.net/remake/
> "Remake - GNU Make with comprehensible tracing and a debugger"
> 
> I find it an invaluable enhancement to make when debugging complex makefiles
> full of generated code.  Give it a try: you won't look back once you've
> discovered how much easier life is when you can single-step through the source
> of a makefile, set breakpoints, inspect variables and see the return values
> from called functions.

I tried it and I found it awesome.

BTW what is the problem with integrating it into mainline make?

Having to use make for real compilation and having to use another tool
for testing/debuggin is rather brittle...

> Stefano:
> 
> "It doesn't tell which the implicit rule is", are you sure?  The trace shows
> 
> > Trying implicit prerequisite `assert.cxx'.
> > Found an implicit rule for 
> >
> `/home/stefano/src/reilabs/flash2sip/contrib/src/ptlib_2.2.1/lib/obj_linux_x86_r/assert.o'.
> 
> Therefore the implicit rule it is referring to must be of the form
> 
> %.o: %.cxx 
> 
> mustn't it?

Yes, but yet again it would be nice also to see *which* is the
implicit rule used, rather than leave the user having to guess it.

Regards.