debugging eval,call,foreach....

[mcmahill]

> 
> This release contains several bug fixes plus some powerful new features,
> including an $(eval ...) function, "order-only" prerequisites,
> compatibility with the odd SysV make $$@ syntax, a new command-line
> option -B or --always-make, ability to create recursive functions for
> use with $(call ...), new variables MAKEFILE_LIST and .VARIABLES, and
> more.
> 

$(eval ...) and $(call ...) seem very powerful, but somewhat difficult to
really debug.  Is there a way I can tell make to process my makefile
expanding the $(eval ...) and $(call ...) and print out the result of this
first pass expansion?

For example, the manual has this example:

     PROGRAMS= client server

     define PROGRAM_template
      $(1): $$($(1)_OBJ) $$($(1)_LIBS:%=-l%)
      ALL_OBJS   += $$($(1)_OBJS)
     endef
     
     $(foreach prog,$(PROGRAMS),$(eval $(call PROGRAM_template,$(prog))))

it would be nice have a way to produce:

client: $(client_OBJS)
ALL_OBJS+=$(client_OBJS)
server: $(server_OBJS)
ALL_OBJS+=$(server_OBJS)

to help verify that all the quoting/escaping in PROGRAM_template and the
$( ...) stuff is right.


oh, also the manual should have "OBJS" not "OBJ" in the PROGRAM_template
definition.

-Dan