diff -ru libvorbis-1.2.0/configure.in libvorbis-1.2.0+iPhone/configure.in
--- libvorbis-1.2.0/configure.in	2007-07-25 16:27:00.000000000 +0000
+++ libvorbis-1.2.0+iPhone/configure.in	2008-02-27 02:24:20.000000000 +0000
@@ -161,8 +161,8 @@
 		PROFILE="-pg -g -O20 -D__NO_MATH_INLINES -fsigned-char -mv8" ;;
 	*-*-darwin*)
 		DEBUG="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -O0 -fsigned-char"
-		CFLAGS="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -O4 -ffast-math -fsigned-char"
-		PROFILE="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -pg -O4 -ffast-math -fsigned-char";;
+		CFLAGS="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -O3 -ffast-math -fsigned-char"
+		PROFILE="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -pg -O3 -ffast-math -fsigned-char";;
 	*)
 		DEBUG="-g -Wall -W -D__NO_MATH_INLINES -fsigned-char"
 		CFLAGS="-O20 -D__NO_MATH_INLINES -fsigned-char"