--- ./configure.orig	1997-08-23 06:11:24.000000000 -0500
+++ ./configure	2019-08-09 00:26:06.951488547 -0500
@@ -1409,7 +1409,7 @@
     if test "$OS_TYPE" = "FreeBSD" ; then
       OS_TYPE="BSD"
     fi
-    CFLAGS="-O6 -ffast-math -fomit-frame-pointer ${CFLAGS_ARCH}"
+    CFLAGS="-O0 ${CFLAGS_ARCH}"
     DEFINES="-DNO_BYTE_SWAPPING -DOS_$OS_TYPE -DARCH_$ARCH_TYPE" 
     ;;
 
--- ./audio.h.orig	1997-08-21 08:00:18.000000000 -0500
+++ ./audio.h	2019-08-09 00:26:06.950488547 -0500
@@ -7,6 +7,8 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 struct AUDIO_HEADER {
 	int ID;
--- ./misc2.h.orig	1997-08-16 13:19:29.000000000 -0500
+++ ./misc2.h	2019-08-09 00:26:06.955488547 -0500
@@ -9,6 +9,7 @@
 
 extern void requantize_mono(int gr,int ch,struct SIDE_INFO *info,struct AUDIO_HEADER *header);
 extern void requantize_ms(int gr,struct SIDE_INFO *info,struct AUDIO_HEADER *header);
+extern void requantize_downmix(int gr,struct SIDE_INFO *info,struct AUDIO_HEADER *header);
 extern void alias_reduction(int ch);
 extern void calculate_t43(void);
 
--- ./audio.c.orig	1997-08-23 06:30:21.000000000 -0500
+++ ./audio.c	2019-08-09 00:26:06.949488547 -0500
@@ -31,11 +31,13 @@
 
 #define AUDIO
 #include "audio.h"
+#include "dump.h"
 #include "formats.h"
 #include "getbits.h"
 #include "huffman.h"
 #include "layer2.h"
 #include "layer3.h"
+#include "misc2.h"
 #include "position.h"
 #include "rtbuf.h"
 #include "transform.h"
--- ./configure.in.orig	1997-08-23 06:35:41.000000000 -0500
+++ ./configure.in	2019-08-09 00:26:06.952488547 -0500
@@ -69,7 +69,7 @@
     if test "$OS_TYPE" = "FreeBSD" ; then
       OS_TYPE="BSD"
     fi
-    CFLAGS="-O6 -ffast-math -fomit-frame-pointer ${CFLAGS_ARCH}"
+    CFLAGS="-O0 ${CFLAGS_ARCH}"
     DEFINES="-DNO_BYTE_SWAPPING -DOS_$OS_TYPE -DARCH_$ARCH_TYPE" 
     ;;
 
--- ./guicontrol.c.orig	2019-08-09 00:25:48.432489684 -0500
+++ ./guicontrol.c	2019-08-09 00:26:06.953488547 -0500
@@ -276,6 +276,8 @@
   return cnt;
 }
 
+int decodeMPEG_2(int inFilefd);
+
 void gui_control(void)
 {
   int flags,dummy;