diff --git a/configure b/configure
index fb55187..ceeae8d 100755
--- a/configure
+++ b/configure
@@ -3951,7 +3951,7 @@ fi
 # Default compiler flags
 #-------------------------------------------------------------------------
 
-CFLAGS="-Wall -Os -std=gnu99 -Wno-unused"
+CFLAGS="-Wall -Os -std=gnu99 -Wno-unused -Wno-attributes"
 
 LIBS="-lc -lgcc"
 
diff --git a/configure.ac b/configure.ac
index 185237a..71a9e33 100644
--- a/configure.ac
+++ b/configure.ac
@@ -71,7 +71,7 @@ AC_HEADER_STDC
 # Default compiler flags
 #-------------------------------------------------------------------------
 
-AC_SUBST([CFLAGS],  ["-Wall -Os -std=gnu99 -Wno-unused"])
+AC_SUBST([CFLAGS],  ["-Wall -Os -std=gnu99 -Wno-unused -Wno-attributes"])
 AC_SUBST([LIBS],  ["-lc -lgcc"])
 
 AX_DEFAULT_CONFIGURE_ARG([--host=riscv])