Re: first draft of "relocatable" module

[Ben Pfaff]

Ralf Wildenhues <address@hidden> writes:

> * Bruno Haible wrote on Sun, Feb 25, 2007 at 09:23:09PM CET:
>> 
>> >         * It looks like Automake support is wanted for
>> >           automatically defining foo_CFLAGS and foo_LDFLAGS.  Any
>> >           suggestion about what mechanism should be used to
>> >           trigger this?  e.g. something in AUTOMAKE_OPTIONS, a
>> >           magic AM_CONDITIONAL directive, something else?  Being
>> >           no Automake guru I'm not sure what would be considered
>> >           in the "spirit of Automake" here.
>> 
>> Ralf?
>
> Erm, just tell the user to add flags to AM_CFLAGS and AM_LDFLAGS?
> Not sure what level of automation you're after, here, sorry.

The issue is foo_CFLAGS and foo_LDFLAGS need to refer back to the
directory in which foo is installed.  Thus, if foo is in
bin_PROGRAMS then the following is correct:

      foo_CFLAGS = -DINSTALLDIR=\"$(bindir)\"
      if RELOCATABLE_VIA_LD
      foo_LDFLAGS = `$(RELOCATABLE_LDFLAGS) $(bindir)`
      endif

but if foo is in libexecdir_PROGRAMS then the following is needed
instead:

      foo_CFLAGS = -DINSTALLDIR=\"$(libexecdir)\"
      if RELOCATABLE_VIA_LD
      foo_LDFLAGS = `$(RELOCATABLE_LDFLAGS) $(libexecdir)`
      endif

That's why I'm asking for advice: I don't know how to do this
gracefully.
-- 
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 And that's being so good at what you do that they can't ignore you.
 I told them you were the best.  Now you damn well better be."
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