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Re: starnge dependencies in makefile


From: Shai Ayal
Subject: Re: starnge dependencies in makefile
Date: Wed, 14 Nov 2007 20:27:05 +0200

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

Shai


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