diff --git a/poky/meta/classes/autotools.bbclass b/poky/meta/classes/autotools.bbclass
index 2c7968e..bc0c2ea 100644
--- a/poky/meta/classes/autotools.bbclass
+++ b/poky/meta/classes/autotools.bbclass
@@ -145,7 +145,13 @@
 ACLOCALEXTRAPATH:class-nativesdk = " -I ${STAGING_DATADIR_NATIVE}/aclocal/"
 
 python autotools_aclocals () {
-    d.setVar("CONFIG_SITE", siteinfo_get_files(d, sysrootcache=True))
+    sitefiles, searched = siteinfo_get_files(d, sysrootcache=True)
+    d.setVar("CONFIG_SITE", " ".join(sitefiles))
+}
+
+python () {
+    sitefiles, searched = siteinfo_get_files(d, sysrootcache=False)
+    d.appendVarFlag("do_configure", "file-checksums", " " + " ".join(searched))
 }
 
 CONFIGURE_FILES = "${S}/configure.in ${S}/configure.ac ${S}/config.h.in ${S}/acinclude.m4 Makefile.am"