Re: Configure specific to plugins

[Bob Friesenhahn]

On Fri, 12 Oct 2007, DexterMagnific wrote:

> For example, my application needs lots of libs (X, Gtk, XML ....), but
> protocol plugins need only to be linked against some of them (e.g.
> bluetooth, no need for Gtk, XML ...).
>
> How to make configure script generate the right LIBS for the plugins in the
> configure.ac file ?

Your complaint may be related to 'libtool' and not 'autoconf' (look 
for the libtool list).  Since your desire is not necessarily portable, 
libtool currently applies all dependencies at link time.  Some OS 
distributions modify their libtool to work differently.

There is also a possibility that your complaint is related to 
'automake' rather than 'autoconf' (look for the automake list).  By 
default, automake applies all libraries obtained from configure's LIBS 
variable.  By taking care with how LIBS is formulated, and using more 
specific automake code you can do something like this (example taken 
from my own package):

In Makefile.am:
# TIFF coder module
coders_tiff_la_SOURCES     = coders/tiff.c
coders_tiff_la_CPPFLAGS    = $(MODULE_EXTRA_CPPFLAGS)
coders_tiff_la_LDFLAGS     = $(MODULECOMMONFLAGS)
coders_tiff_la_LIBADD      = $(LIBMAGICK) $(LIB_TIFF) $(LIB_JPEG) $(LIB_ZLIB)

With the various variables being figured out by the configure script.

This allows the libraries applied while linking your module to be more 
specific.  However, you must take care because if you want your 
software to compile and work on systems which don't allow unresolved 
symbols (e.g. Win32 & AIX) all of the libraries necessary to resolve 
all symbols must be applied.

Bob
======================================
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/