diff --git a/meta/classes/allarch.bbclass b/meta/classes/allarch.bbclass
index 2fea7c0..4af38d7 100644
--- a/meta/classes/allarch.bbclass
+++ b/meta/classes/allarch.bbclass
@@ -27,6 +27,10 @@
         d.setVar("PACKAGE_EXTRA_ARCHS", "")
         d.setVar("SDK_ARCH", "none")
         d.setVar("SDK_CC_ARCH", "none")
+        d.setVar("TARGET_CPPFLAGS", "none")
+        d.setVar("TARGET_CFLAGS", "none")
+        d.setVar("TARGET_CXXFLAGS", "none")
+        d.setVar("TARGET_LDFLAGS", "none")
 
         # Avoid this being unnecessarily different due to nuances of
         # the target machine that aren't important for "all" arch