Re: starnge dependencies in makefile

[Shai Ayal]

On Nov 14, 2007 8:39 PM, John W. Eaton <address@hidden> wrote:
>
> On 14-Nov-2007, Shai Ayal wrote:
>
> | On Nov 14, 2007 7:50 PM, John W. Eaton <address@hidden> wrote:
> | >
> | > On 14-Nov-2007, Shai Ayal wrote:
> | >
> | > | Whay is that if I do a make -k and then change src/graphics.h.in and 
> then do
> | > | cd src && make graphics.o
> | > |
> | > | I get a long line of other things before graphics is compiled:
> | > |
> | > |
> | > | making op-scm-m.d from ./OPERATORS/op-scm-m.cc
> | > | making op-scm-cs.d from ./OPERATORS/op-scm-cs.cc
> | > | making op-scm-cm.d from ./OPERATORS/op-scm-cm.cc
> | > | making op-sbm-sbm.d from ./OPERATORS/op-sbm-sbm.cc
> | > | making op-sbm-bm.d from ./OPERATORS/op-sbm-bm.cc
> | > | making op-sbm-b.d from ./OPERATORS/op-sbm-b.cc
> | > | ....
> | > |
> | > | and many more
> | >
> | > This happens because of these rules:
> | >
> | > stamp-prereq: defaults.h graphics.h oct-conf.h oct-gperf.h parse.cc 
> lex.cc __gnuplot_raw__.cc $(OPT_HANDLERS)
> | >         touch stamp-prereq
> | >
> | >
> | > $(DEF_FILES): stamp-prereq stamp-liboctave-prereq mkdefs defun-int.h 
> defun-dld.h defun.h defaults.h oct-conf.h
> | >
> | > $(MAKEDEPS): stamp-prereq stamp-liboctave-prereq defaults.h oct-gperf.h 
> oct-conf.h
> | >
> | > ifndef omit_deps
> | > -include $(MAKEDEPS)
> | > endif
> | >
> | > If you have a better way, please submit a patch.
> |
> | Before I submit I have to understand ...
> | grep graphics *.d shows that it is used by only mex.cc and
> | graphics.cc, so maybe it is better to remove it from the prerequisite
> | list for stamp-prereq and just add this dependency explicitly to the
> | Makefie?
>
> | mex.cc :  graphics,h
> | graphics.cc: graphics.h
>
> I'm sure there are other cases where similar changes could be made as
> well, so why single out graphics.h?

Well, thats what annoyed me :)

> Also, I'd rather avoid managing these dependencies by hand.  That's
> what the .d files are supposed to be for.
> jwe
>