diff --git a/meta-openembedded/meta-oe/recipes-benchmark/dhrystone/dhrystone_2.1.bb b/meta-openembedded/meta-oe/recipes-benchmark/dhrystone/dhrystone_2.1.bb
index 17e8c70..d809a56 100644
--- a/meta-openembedded/meta-oe/recipes-benchmark/dhrystone/dhrystone_2.1.bb
+++ b/meta-openembedded/meta-oe/recipes-benchmark/dhrystone/dhrystone_2.1.bb
@@ -22,5 +22,6 @@
 
 # Prevent procedure merging as required by dhrystone.c:
 CFLAGS += "-fno-lto"
+CFLAGS:append:toolchain-clang = " -Wno-error=implicit-function-declaration -Wno-error=deprecated-non-prototype -Wno-error=implicit-int"
 
 LDFLAGS += "-fno-lto"