# -O3 makes GCC do loopy things. So, don't use -O3, use -O2 instead.

# Not for upstream.

--- configure	2014-12-08 05:42:51.000000000 -0800

+++ configure	2016-01-20 08:22:03.089548131 -0800

@@ -11879,14 +11879,14 @@

 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_check_compiler_flags" >&5

 $as_echo "$ax_check_compiler_flags" >&6; }

 if test "x$ax_check_compiler_flags" = xyes; then

-	CFLAGS="-O3 -qansialias -w $xlc_opt"

+	CFLAGS="-O2 -qansialias -w $xlc_opt"

 else

-	CFLAGS="-O3 -qansialias -w"

+	CFLAGS="-O2 -qansialias -w"

                 echo "******************************************************"

                 echo "*  You seem to have the IBM  C compiler.  It is      *"

                 echo "*  recommended for best performance that you use:    *"

                 echo "*                                                    *"

-                echo "*    CFLAGS=-O3 -qarch=xxx -qtune=xxx -qansialias -w *"

+                echo "*    CFLAGS=-O2 -qarch=xxx -qtune=xxx -qansialias -w *"

                 echo "*                      ^^^        ^^^                *"

                 echo "*  where xxx is pwr2, pwr3, 604, or whatever kind of *"

                 echo "*  CPU you have.  (Set the CFLAGS environment var.   *"

@@ -11896,7 +11896,7 @@

          ;;

-    intel) CFLAGS="-O3 -ansi_alias"

+    intel) CFLAGS="-O2 -ansi_alias"

 	if test "x$acx_maxopt_portable" = xno; then

 	  icc_archflag=unknown

 	  icc_flags=""

@@ -12069,7 +12069,7 @@

     gnu)

      # default optimization flags for gcc on all systems

-     CFLAGS="-O3 -fomit-frame-pointer"

+     CFLAGS="-O2 -fno-omit-frame-pointer"

      # -malign-double for x86 systems

       { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -malign-double" >&5

@@ -12590,10 +12590,10 @@

 	echo "********************************************************"

         echo "* WARNING: Don't know the best CFLAGS for this system  *"

         echo "* Use ./configure CFLAGS=... to specify your own flags *"

-	echo "* (otherwise, a default of CFLAGS=-O3 will be used)    *"

+	echo "* (otherwise, a default of CFLAGS=-O2 will be used)    *"

 	echo "********************************************************"

 	echo ""

-        CFLAGS="-O3"

+        CFLAGS="-O2"

   fi

    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts $CFLAGS" >&5