dolfin team mailing list archive

["Garth N. Wells" <g.n.wells@xxxxxxxxxx>]

On Thu, 2006-02-16 at 17:48 +0100, Johan Jansson wrote:
> On Thu, Feb 16, 2006 at 03:36:00PM +0100, Garth N. Wells wrote:
> > I think I've found the problem with static libraries. In configure.ac,
> > DOLFIN_LTLIBS should refer to all the *.lo files, which are located in
> > the same directories as the source code (see
> > http://sourceware.org/autobook/autobook/autobook_94.html).
> > 
> > Also, is the line
> > 
> >   libdolfin_la_DEPENDENCIES = @DOLFIN_LTLIBS@
> > 
> > in src/lib/Makefile.am required?
> > 
> > Garth 
> > 
> > # Generate libtool library list (including also module code)
> > DOLFIN_LTLIBS=""
> > for f in $DOLFIN_MODULES; do
> > #  DOLFIN_LTLIBS="$DOLFIN_LTLIBS \
> > $(top_builddir)/src/modules/$f/libdolfin-$f.la "
> >    DOLFIN_LTLIBS="$DOLFIN_LTLIBS \$(top_builddir)/src/modules/$f/*.lo "
> > done
> > for f in $DOLFIN_KERNEL; do
> > #   DOLFIN_LTLIBS="$DOLFIN_LTLIBS \
> > $(top_builddir)/src/kernel/$f/libdolfin-$f.la "
> >     DOLFIN_LTLIBS="$DOLFIN_LTLIBS \$(top_builddir)/src/kernel/$f/*.lo "
> > done
> > AC_SUBST(DOLFIN_LTLIBS)
> > 
> 
> Ok, libtool can handle this much better. Perhaps linking library files
> (.la) isn't an established feature yet.
> 

Works great for me now - both static and shared. I'll try it under
Cygwin shortly.

> Explicitly setting the DEPENDENCIES variable is needed, LIBADD doesn't
> seem to generate any dependencies. This is an issue with automake
> though.
> 

OK, I didn't know if we would need to set a new variable, or if
DOLFIN_LTLIBS could just be redfined. I see that you've added a new
variable.

> With the change to linking directly against the library object files,
> the individual libraries (libdolfin-la, libdolfin-stokes etc.) are
> redundant and I think just confusing, so I will remove them if you
> agree with this. In the terminology of libtool, every object file is a
> library anyway. We can still keep the structure, just that it won't
> show up in the libraries.
> 

I see the concept "convenience" libraries a lot with libtool. We could
still make all the individual libraries, but only install libdolfin.a.
Is there an advantage in doing this?

Garth

>   Johan
> 
> 
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-- 
Dr. Garth N. Wells
Faculty of Civil Engineering and Geosciences
Delft University of Technology
Stevinweg 1
2628 CN Delft
The Netherlands

tel.     +31 15 278 7922
fax.     +31 15 278 6383
e-mail   g.n.wells@xxxxxxxxxx
url      http://www.mechanics.citg.tudelft.nl/~garth