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RE: dynamic selection of linker

From: Daily, Jeff A
Subject: RE: dynamic selection of linker
Date: Tue, 9 Feb 2010 11:23:19 -0800

> > > > But regardless of whether NOFORT is true, the Fortran linker is
> > > > always chosen.  What should I be doing?  Thanks.
> > >
> > > Override FCLD (if Makefile-global is acceptable) or
> > > libtest_la_LINK.
> > >
> >
> > Just to clarify, I'm using F77 and libtool.  After looking at one of
> > the automake-generated Makefiles, I would need to set F77LINK=$(LINK)
> > in this case, right?
> That's another possibility for makefile-global override, yes.
> Cheers,
> Ralf

When I conditionally set F77LINK=$(LINK), automake complains.
# snippet

automake: F77LINK was already defined in condition NOFORT, which is included in 
condition TRUE ... 2 ... `F77LINK` previously defined here

Although inadvisable, I thought the could override whatever it 
wanted, without warning.  See 23.1 Extending Automake Rules in the automake 

If I remove the AM_CONDITIONAL use and simply have F77LINK = $(LINK), automake 
no longer complains.  This doesn't seem correct.  In any case, I do need to 
conditionalize this assignment.  For example, I'm not quite sure how I could 
use AC_SUBST in this case in order to avoid the use of the conditional.  
Something to the effect of AC_SUBST([F77LINK], [[$(LINK)]]), if you know what 
I'm trying to get at here.  (I apologize, I don't know what you meant by 
Makefile-global, if there is some other means of accomplishing what I want.)


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