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

[Dave Korn]

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.


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?



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