diff --git a/meta/classes/siteconfig.bbclass b/meta/classes/siteconfig.bbclass
new file mode 100644
index 0000000000..5311653bb5
--- /dev/null
+++ b/meta/classes/siteconfig.bbclass
@@ -0,0 +1,31 @@
+siteconfig_do_siteconfig() {
+	if [ ! -d ${FILE_DIRNAME}/site_config ]; then
+		exit 0
+	fi
+	mkdir ${WORKDIR}/site_config
+	gen-site-config ${FILE_DIRNAME}/site_config \
+		>${WORKDIR}/site_config/configure.ac
+	cd ${WORKDIR}/site_config
+	autoconf
+        CONFIG_SITE="" ./configure ${CONFIGUREOPTS} --cache-file ${PN}_cache
+	sed -n -e "/ac_cv_c_bigendian/p" -e "/ac_cv_sizeof_/p" \
+		-e "/ac_cv_type_/p" -e "/ac_cv_header_/p" -e "/ac_cv_func_/p" \
+		< ${PN}_cache > ${PN}_config
+	mkdir -p ${SYSROOT_DESTDIR}${STAGING_DATADIR}/${TARGET_SYS}_config_site.d
+	cp ${PN}_config ${SYSROOT_DESTDIR}${STAGING_DATADIR}/${TARGET_SYS}_config_site.d
+}
+
+# Ugly integration with sstate_task_postfunc for now.  The normal package 
+# sysroot components must be installed in order to generate the cache, but
+# the site cache must be generated before the staging archive is generated.
+python sstate_task_postfunc () {
+    shared_state = sstate_state_fromvars(d)
+    sstate_install(shared_state, d)
+    if shared_state['name'] == 'populate-sysroot':
+        bb.build.exec_func('do_siteconfig', d)
+        sstate_clean(shared_state, d)
+        sstate_install(shared_state, d)
+    sstate_package(shared_state, d)
+}
+
+EXPORT_FUNCTIONS do_siteconfig
diff --git a/meta/classes/siteinfo.bbclass b/meta/classes/siteinfo.bbclass
index c4206c2d85..130fdc4cfb 100644
--- a/meta/classes/siteinfo.bbclass
+++ b/meta/classes/siteinfo.bbclass
@@ -96,6 +96,13 @@ def siteinfo_get_files(d):
                if os.path.exists(fname):
                        sitefiles += fname + " "
 
+       # Now check for siteconfig cache files
+       path_siteconfig = os.path.join(bb.data.getVar('STAGING_DATADIR', d, 1), bb.data.getVar('TARGET_SYS', d, 1) + "_config_site.d")
+       if os.path.isdir(path_siteconfig):
+               for i in os.listdir(path_siteconfig):
+                       fname = os.path.join(path_siteconfig, i)
+                       sitefiles += fname + " "
+
        bb.debug(1, "SITE files " + sitefiles);
        return sitefiles
 
diff --git a/scripts/gen-site-config b/scripts/gen-site-config
new file mode 100755
index 0000000000..7da7a0bd8a
--- /dev/null
+++ b/scripts/gen-site-config
@@ -0,0 +1,53 @@
+#! /bin/sh
+#  Copyright (c) 2005-2008 Wind River Systems, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+cat << EOF
+AC_PREREQ(2.57)
+AC_INIT([site_wide],[1.0.0])
+
+EOF
+
+# Disable as endian is set in the default config
+#echo AC_C_BIGENDIAN
+#echo
+
+if [ -e $1/types ] ; then
+  while read type ; do
+    echo "AC_CHECK_SIZEOF([$type])"
+  done < $1/types
+
+  echo
+fi
+
+if [ -e $1/funcs ]; then
+  while read func ; do
+    echo "AC_CHECK_FUNCS([$func])"
+  done < $1/funcs
+
+  echo
+fi
+
+if [ -e $1/headers ]; then
+  while read header ; do
+    echo "AC_CHECK_HEADERS([$header])"
+  done < $1/headers
+
+  echo
+fi
+
+cat << EOF
+AC_OUTPUT
+EOF