Convenience libraries build both PIC and non-PIC regardless of -static?

[Steven Brown]

For a simple libtool convenience library, I've noticed the compile stage 
compiles both PIC and non-PIC objects regardless of if it's actually 
going to need PIC in the link stage.  E.g, for something like this, 
which is explicitly -static:

noinst_LTLIBRARIES = libconvenience.la
libconvenience_la_LDFLAGS = -static
libconvenience_la_SOURCES = convenience.cc convenience.hpp

It'll compile both a -fPIC .libs/convenience.o and a normal 
convenience.o, despite only using the normal convenience.o when 
producing the archive.  For C++ projects with slow compile times, this 
burns a lot of time.

Is there a way to tell libtool to not build those PIC objects without 
disabling shared libraries globally in the project with 
AC_DISABLE_SHARED?  The only thing I could find about this was this 
thread[1] but the patch doesn't seem to have been applied.


[1] http://www.mail-archive.com/address@hidden/msg03971.html