Re: prog_DEPENDENCIES

[Ralf Wildenhues]

Hi Bob,

* Bob Rossi wrote on Sat, Jan 27, 2007 at 02:32:30PM CET:
> 
>   -std_btree_driver_LDADD = -ladt
>   +std_btree_driver_LDADD = libadt.a
> 
>   -std_btree_driver_DEPENDENCIES = $(top_builddir)/various/adt/src
>   +std_btree_driver_DEPENDENCIES = libadt.a

Hmm.  If libadt.a is built in the same directory, then I'd also do the
first change, and remove the *_DEPENDENCIES line.  That way,
dependencies should be computed correctly.  See my reply to the other
thread for more information.  ;-)

(The changed *_DEPENDENCIES line looks ok from a casual glance.  But why
maintain two lines of information if it can be tracked automatically?)

(The original *_DEPENDENCIES line looks a bit suspicious.  Is that a
directory?  Depending on a directory isn't portable to all kinds of
'make' implementations.)

>   If prog_DEPENDENCIES is not supplied, it is computed by Automake. The
>   automatically-assigned value is the contents of prog_LDADD, with most
>   configure substitutions, -l, -L, -dlopen and -dlpreopen options removed.
>   The configure substitutions that are left in are only @LIBOBJS@ and
>   @ALLOCA@; these are left because it is known that they will not cause an
>   invalid value for prog_DEPENDENCIES to be generated.
> 
> This makes me think maybe I shouldn't be adding _DEPENDENCIES at all
> unless I want to link something in that isn't in LDADD. Is this correct?

More or less.  Say, you need libfoo built after some other thing is
built that isn't a library-to-be-linked-against.  For example a file
containing a list of exported symbols, to be passed to "libtool
--mode=link" as argument to -export-symbols.

Cheers,
Ralf