--- a/common/autoconf/flags.m4	Wed Jul 05 21:13:10 2017 +0200
+++ b/common/autoconf/flags.m4	Thu Jan 14 20:57:29 2016 -0800
@@ -501,7 +501,7 @@
       C_O_FLAG_HI="-O3 -qstrict"
       C_O_FLAG_NORM="-O2"
       C_O_FLAG_DEBUG="-qnoopt"
-      C_O_FLAG_NONE="-qnoop"
+      C_O_FLAG_NONE="-qnoopt"
     elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
       C_O_FLAG_HIGHEST="-O2"
       C_O_FLAG_HI="-O1"