[DVDnav-discuss] parallel make problem

[Dominik 'Rathann' Mierzejewski]

On Saturday, 30 August 2008 at 17:30, Dan Nicholson wrote:
> On Sat, Aug 30, 2008 at 7:05 AM, Dominik 'Rathann' Mierzejewski
> <dominik at greysector.net> wrote:
> > I'm experiencing a problem with make -j2:
[...]
> > But I'd rather have a proper fix instead of workarounds.
> > Ideas?
> 
> You really don't want to have a target dependent on a directory
> because make will always think the target is out of date.

On second thought, why? If it's created by that rule, it should behave
just like any other file.

> That prevents doing the right thing:
> 
> $(OBJS) $(DVDREAD_OBJS) $(SHOBJS) $(DVDREAD_SHOBJS): $(.OBJDIR)

Actually this seems to work fine.

How about this patch:
Index: Makefile
===================================================================
--- Makefile    (revision 1122)
+++ Makefile    (working copy)
@@ -78,6 +78,8 @@
 $(.OBJDIR):
        mkdir $(.OBJDIR)
 
+$(OBJS) $(DVDREAD_OBJS) $(SHOBJS) $(DVDREAD_SHOBJS): $(.OBJDIR)
+
 ${DVDREAD_LIB}: version.h $(.OBJDIR) $(DVDREAD_OBJS) $(BUILDDEPS)
        cd $(.OBJDIR) && $(AR) rc $@ $(DVDREAD_OBJS)
        cd $(.OBJDIR) && $(RANLIB) $@

Regards,
R.

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