🚀 go-pugleaf

In article <1992Jan18.190736.11729@markv.com> lance@markv.com (Lance Ellinghouse) writes:

>I want to make the Source code in the current directory and the object code 
>directorie completely configurable.. 
>so I created a set of dependencies like this:
>
>$(DEST)/file1.o: file1.c
>$(DEST)/file2.o: file2.c
>$(DEST)/file3.o: file3.c
>$(DEST)/file4.o: file4.c
>$(DEST)/file5.o: file5.c
>
>I then defined DEST to be something like:
>
>DEST = /usr/tmp
>
>I then set up an inference rule to be:
>
>.c.o:
>	$(CC) -c $(CFLAGS) -Fo$@ $<
>
>
>now everything works just fine if DEST is a RELATIVE 
>directory to the current one.. but when DEST is a full
>pathname, it will NOT run the inference rules on them at
I think you mean the other way around -- this won't work when you
use a relative path name and will work when you use a fully
qualified path name.

>all!! I would like to have it a relative path, but it
>is not possible.. It must be a full pathname..
Thought so. :-)

>
>Am I doing something wrong? 
Well, not really... but make treats anything that starts with a '.'
as a suffix rule. So it is not able to "parse" your dependency properly
when you use relative path for DEST (it would start with a period).
This is really a problem with make.

>Anyone have any sugestions???
Try starting off the dependency from column 2. I can't guarantee that
this will work though.

>DOS "NMAKE" has a REALLY nice feature by being able to 
>define the inference rule itself with the source and destination
>directories instead of the dependency lines! you would do something 
>like:
>
>.c{$(DEST)}.o:
>	$(CC) -c $(CFLAGS)...
>
>This will make it look in $(DEST) for the .o files FIRST and then
>fall back to the current directory.. Is there a way to do this with
>standard UNIX make????
No!

>Or is there a PD Make that will support this type of declaration???
Not exactly this type... But GNU make (for instance) supports a macro
called VPATH which makes it possible for you to specify the directories
where targets may be found if they are not in current directory. This
is a BSDism -- so any PD make claiming to be BSD-make compatible should
support this. I don't know of any, sorry.

Hope that helps.
Rajappa

-- 

Rajappa Iyer (Banker Group, Citicorp Software)    
Internet : banker@shakti.ernet.in