--- src/Makefile.in.orig	2016-10-21 09:19:56.000000000 -0500
+++ src/Makefile.in	2016-11-01 07:38:21.000000000 -0500
@@ -1,4 +1,4 @@
-FLAGGED_MKOCTFILE = @MKOCTFILE@ @XTRA_CXXFLAGS@ @CXXFLAGS@
+FLAGGED_MKOCTFILE = @MKOCTFILE@ @XTRA_CXXFLAGS@ -pipe -Os -stdlib=libc++
 
 ## We can't link oct files, and Octave's package system does not handle
 ## shared libraries. Because of this, we need to create object files for