diff --git a/meta/classes-recipe/rust.bbclass b/meta/classes-recipe/rust.bbclass
index e727601679a..6407c103941 100644
--- a/meta/classes-recipe/rust.bbclass
+++ b/meta/classes-recipe/rust.bbclass
@@ -8,8 +8,6 @@ inherit rust-common
 
 RUSTC = "rustc"
 
-RUSTC_ARCHFLAGS += "--target=${RUST_HOST_SYS} ${RUSTFLAGS}"
-
 def rust_base_dep(d):
     # Taken from meta/classes/base.bbclass `base_dep_prepend` and modified to
     # use rust instead of gcc
@@ -23,26 +21,6 @@ def rust_base_dep(d):
 
 DEPENDS:append = " ${@rust_base_dep(d)}"
 
-# BUILD_LDFLAGS
-# 	${STAGING_LIBDIR_NATIVE}
-# 	${STAGING_BASE_LIBDIR_NATIVE}
-# BUILDSDK_LDFLAGS
-# 	${STAGING_LIBDIR}
-# 	#{STAGING_DIR_HOST}
-# TARGET_LDFLAGS ?????
-#RUSTC_BUILD_LDFLAGS = "\
-#	--sysroot ${STAGING_DIR_NATIVE} \
-#	-L${STAGING_LIBDIR_NATIVE}	\
-#	-L${STAGING_BASE_LIBDIR_NATIVE}	\
-#"
-
-# XXX: for some reason bitbake sets BUILD_* & TARGET_* but uses the bare
-# variables for HOST. Alias things to make it easier for us.
-HOST_LDFLAGS  ?= "${LDFLAGS}"
-HOST_CFLAGS   ?= "${CFLAGS}"
-HOST_CXXFLAGS ?= "${CXXFLAGS}"
-HOST_CPPFLAGS ?= "${CPPFLAGS}"
-
 rustlib_suffix = "${TUNE_ARCH}${TARGET_VENDOR}-${TARGET_OS}/rustlib/${RUST_HOST_SYS}/lib"
 # Native sysroot standard library path
 rustlib_src = "${prefix}/lib/${rustlib_suffix}"