--- rtaudio-4.0.11/configure.ac
+++ rtaudio-4.0.11/configure.ac
@@ -23,8 +23,8 @@
 AC_MSG_CHECKING(whether to compile debug version)
 AC_ARG_ENABLE(debug,
   [  --enable-debug = enable various debug output],
-  [AC_SUBST( cppflag, [-D__RTAUDIO_DEBUG__] ) AC_SUBST( cxxflag, [-g] ) AC_SUBST( object_path, [Debug] ) AC_MSG_RESULT(yes)],
-  [AC_SUBST( cppflag, [] ) AC_SUBST( cxxflag, [-O2] ) AC_SUBST( object_path, [Release] ) AC_MSG_RESULT(no)])
+  [AC_SUBST( cppflag, [-D__RTAUDIO_DEBUG__] ) AC_SUBST( object_path, [Debug] ) AC_MSG_RESULT(yes)],
+  [AC_SUBST( cppflag, [] ) AC_SUBST( object_path, [Release] ) AC_MSG_RESULT(no)])
 
 
 # Checks for functions
@@ -33,10 +33,6 @@
 # For -I and -D flags
 CPPFLAGS="$CPPFLAGS $cppflag"
 
-# For debugging and optimization ... overwrite default because it has both -g and -O2
-#CXXFLAGS="$CXXFLAGS $cxxflag"
-CXXFLAGS="$cxxflag"
-
 # Check compiler and use -Wall if gnu.
 if [test $GXX = "yes" ;] then
   AC_SUBST( cxxflag, [-Wall] )