[yocto] Adding new library to yocto project

[Kfrell]

I am using Yocto and I just would like to integrate a new library 
in my project.

I create a new recipe named "libxerces" which contains a file
"libxerces-3.1.1.bb". The bb file is quite simple and it is based 
on autotools : 

DESCRIPTION = "Xerces-c is a validating xml parser written in C++"
HOMEPAGE = "http://xerces.apache.org/xerces-c/"
PRIORITY = "optional"
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://LICENSE;md5=3b83ef96387f14655fc854ddc3c6bd57"

PR = "r1"

SRC_URI =
"http://mirror.serversupportforum.de/apache/xerces/c/3/sources/xerces-c-${PV}.tar.gz"

SRC_URI[md5sum] = "6a8ec45d83c8cfb1584c5a5345cb51ae"
SRC_URI[sha256sum] =
"a42785f71e0b91d5fd273831c87410ce60a73ccfdd207de1b805d26d44968736"

s="${WORKDIR}/xerces-c-${PV}"

inherit autotools pkgconfig

BBCLASSEXTEND += "native"

I added "libxerces" to my bb image by using IMAGE_INSTALL += " libxerces".
Then, I try to build my image thru bitbake my-image-test and eveything is
done correctly but libxerces returns some errors :

I just would like to create the .ipk package named libxerces in 
which .so files should be available.