Re: Set dependencies between convenience libraries

[Bob Friesenhahn]

On Wed, 21 May 2014, Zé wrote:

> Is there a way to specify dependencies between convenience libraries, and 
> also set the relevant include paths?

Convenience libraries do not have normal dependencies because they are 
not used as libraries (they are just bundled object files).  However, 
you can use libNAME_la_LIBADD to add them as an linkage dependency for 
another library and Automake will take that into consideration when 
ordering the build within the same directory and also apply the 
objects from the convenience library while linking.  If the 
convenience library is built in some other directory, you have to 
ensure that SUBDIRS in the upper Makefile.am is listed in the correct 
order so that the convenience library is built before it is used.

For example (if convenience library is in some other directory):

libNAME_la_LIBADD = $(top_builddir)/convenience/libconvenience.la

or (if convenience library is in same directory):

libNAME_la_LIBADD = libconvenience.la

In my opinion, convenience libraries are evil (they dramatically slow 
down the build) and it is better to use a non-recursive build, using 
Makefile variables to list the required object files in the link 
rather than using a convenience library.

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