Autoconf and nested projects

[Pierre Mazi?re]

Hello,

I have a project that uses a library using autoconf/automake/libtool.
so the directory structure of my project is:
/project
+-- configure.in
+-- Makefile.am
+-- configure
+-- /src
    +-- Makefile.am
    +-- foo.c
+-- /library
    +-- configure.in
    +-- Makefile.am
    +-- configure
    +-- /src
        +-- Makefile.am
        +-- bar.c

I'd like to keep the original library package without any modifications
In this original package, the library is build and installed as static
(libbar.a) and shared (libbar.so) libraries
In my project i would like to exclusively link my foo.o to the static
library bar.a and to void the library installation. But the autotools
always link foo.o with the shared lib. SO th esolution will be to pass the
--disbale-shared option to the library ./configure during the build
process

so here are ?y 2 questions:
1) how can i pass the --disable-shared option to the library ./configure
   during th ebuild process of my  project
2) how to avoid the library o be installed during my project installation
process

thanks for your solutions