3 files changed, 38 insertions, 9 deletions

diff --git a/meta/classes/autotools.bbclass b/meta/classes/autotools.bbclass
index 2c7968e659..bc0c2ea83e 100644
--- a/meta/classes/autotools.bbclass
+++ b/meta/classes/autotools.bbclass
@@ -145,7 +145,13 @@ ACLOCALEXTRAPATH:class-target = " -I ${STAGING_DATADIR_NATIVE}/aclocal/"
 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"
diff --git a/meta/classes/siteinfo.bbclass b/meta/classes/siteinfo.bbclass
index 0bd1f36805..c5f4dfda41 100644
--- a/meta/classes/siteinfo.bbclass
+++ b/meta/classes/siteinfo.bbclass
@@ -176,17 +176,39 @@ python () {
         bb.fatal("Please add your architecture to siteinfo.bbclass")
 }
 
-def siteinfo_get_files(d, sysrootcache = False):
+# Layers with siteconfig need to add a replacement path to this variable so the
+# sstate isn't path specific
+SITEINFO_PATHVARS = "COREBASE"
+
+def siteinfo_get_files(d, sysrootcache=False):
     sitedata = siteinfo_data(d)
-    sitefiles = ""
+    sitefiles = []
+    searched = []
     for path in d.getVar("BBPATH").split(":"):
         for element in sitedata:
             filename = os.path.join(path, "site", element)
             if os.path.exists(filename):
-                sitefiles += filename + " "
+                searched.append(filename + ":True")
+                sitefiles.append(filename)
+            else:
+                searched.append(filename + ":False")
+
+    # Have to parameterise out hardcoded paths such as COREBASE for the main site files
+    for var in d.getVar("SITEINFO_PATHVARS").split():
+        searched2 = []
+        replace = os.path.normpath(d.getVar(var))
+        for s in searched:
+            searched2.append(s.replace(replace, "${" + var + "}"))
+        searched = searched2
+
+    if bb.data.inherits_class('native', d) or bb.data.inherits_class('cross', d) or bb.data.inherits_class('crosssdk', d):
+        # We need sstate sigs for native/cross not to vary upon arch so we can't depend on the site files.
+        # In future we may want to depend upon all site files?
+        # This would show up as breaking sstatetests.SStateTests.test_sstate_32_64_same_hash for example
+        searched = []
 
     if not sysrootcache:
-        return sitefiles
+        return sitefiles, searched
 
     # Now check for siteconfig cache files in sysroots
     path_siteconfig = d.getVar('SITECONFIG_SYSROOTCACHE')
@@ -195,8 +217,8 @@ def siteinfo_get_files(d, sysrootcache = False):
             if not i.endswith("_config"):
                 continue
             filename = os.path.join(path_siteconfig, i)
-            sitefiles += filename + " "
-    return sitefiles
+            sitefiles.append(filename)
+    return sitefiles, searched
 
 #
 # Make some information available via variables
diff --git a/meta/classes/toolchain-scripts.bbclass b/meta/classes/toolchain-scripts.bbclass
index 479f3b706e..fb6261c91d 100644
--- a/meta/classes/toolchain-scripts.bbclass
+++ b/meta/classes/toolchain-scripts.bbclass
@@ -65,6 +65,7 @@ toolchain_create_sdk_env_script () {
 
 # This function creates an environment-setup-script in the TMPDIR which enables
 # a OE-core IDE to integrate with the build tree
+# Caller must ensure CONFIG_SITE is setup
 toolchain_create_tree_env_script () {
         script=${TMPDIR}/environment-setup-${REAL_MULTIMACH_TARGET_SYS}
         rm -f $script
@@ -73,7 +74,7 @@ toolchain_create_tree_env_script () {
         echo 'export PATH=${STAGING_DIR_NATIVE}/usr/bin:${STAGING_BINDIR_TOOLCHAIN}:$PATH' >> $script
         echo 'export PKG_CONFIG_SYSROOT_DIR=${PKG_CONFIG_SYSROOT_DIR}' >> $script
         echo 'export PKG_CONFIG_PATH=${PKG_CONFIG_PATH}' >> $script
-        echo 'export CONFIG_SITE="${@siteinfo_get_files(d)}"' >> $script
+        echo 'export CONFIG_SITE="${CONFIG_SITE}"' >> $script
         echo 'export SDKTARGETSYSROOT=${STAGING_DIR_TARGET}' >> $script
         echo 'export OECORE_NATIVE_SYSROOT="${STAGING_DIR_NATIVE}"' >> $script
         echo 'export OECORE_TARGET_SYSROOT="${STAGING_DIR_TARGET}"' >> $script
@@ -161,7 +162,7 @@ EOF
 }
 
 #we get the cached site config in the runtime
-TOOLCHAIN_CONFIGSITE_NOCACHE = "${@siteinfo_get_files(d)}"
+TOOLCHAIN_CONFIGSITE_NOCACHE = "${@' '.join(siteinfo_get_files(d)[0])}"
 TOOLCHAIN_CONFIGSITE_SYSROOTCACHE = "${STAGING_DIR}/${MLPREFIX}${MACHINE}/${target_datadir}/${TARGET_SYS}_config_site.d"
 TOOLCHAIN_NEED_CONFIGSITE_CACHE ??= "virtual/${MLPREFIX}libc ncurses"
 DEPENDS += "${TOOLCHAIN_NEED_CONFIGSITE_CACHE}"