2 files changed, 6 insertions, 3 deletions

diff --git a/meta/classes/cross-canadian.bbclass b/meta/classes/cross-canadian.bbclass
index fec6438c60..a8565e91e3 100644
--- a/meta/classes/cross-canadian.bbclass
+++ b/meta/classes/cross-canadian.bbclass
@@ -16,6 +16,7 @@ STAGING_BINDIR_TOOLCHAIN = "${STAGING_DIR_NATIVE}${bindir_native}/${SDK_ARCH}${S
 #
 PACKAGE_ARCH = "${SDK_ARCH}-${SDKPKGSUFFIX}"
 CANADIANEXTRAOS = ""
+MODIFYTOS ??= "1"
 python () {
     archs = d.getVar('PACKAGE_ARCHS', True).split()
     sdkarchs = []
@@ -23,6 +24,9 @@ python () {
         sdkarchs.append(arch + '-${SDKPKGSUFFIX}')
     d.setVar('PACKAGE_ARCHS', " ".join(sdkarchs))
 
+    # Allow the following code segment to be disabled, e.g. meta-environment
+    if d.getVar("MODIFYTOS", True) != "1":
+        return
     # PowerPC can build "linux" and "linux-gnuspe"
     tarch = d.getVar("TARGET_ARCH", True)
     if tarch == "powerpc":
diff --git a/meta/recipes-core/meta/meta-environment.bb b/meta/recipes-core/meta/meta-environment.bb
index b3737bb5cf..5d72e38e91 100644
--- a/meta/recipes-core/meta/meta-environment.bb
+++ b/meta/recipes-core/meta/meta-environment.bb
@@ -6,9 +6,9 @@ PR = "r8"
 
 EXCLUDE_FROM_WORLD = "1"
 
-ORIGOS := "${TARGET_OS}"
+MODIFYTOS = "0"
 
-REAL_MULTIMACH_TARGET_SYS = "${TUNE_PKGARCH}${TARGET_VENDOR}-${ORIGOS}"
+REAL_MULTIMACH_TARGET_SYS = "${TUNE_PKGARCH}${TARGET_VENDOR}-${TARGET_OS}"
 
 inherit toolchain-scripts
 TOOLCHAIN_NEED_CONFIGSITE_CACHE += "zlib"
@@ -30,7 +30,6 @@ python do_generate_content() {
 
     # make sure we only use the SDKTARGETSYSROOT value from 'd'
     localdata.setVar('SDKTARGETSYSROOT', d.getVar('SDKTARGETSYSROOT', True))
-    localdata.setVar('TARGET_OS', d.getVar('ORIGOS', True))
     localdata.setVar('libdir', d.getVar('target_libdir', False))
 
     # Process DEFAULTTUNE