vgmplay mac osx patch

diff --git a/VGMPlay/ChipMapper.c b/VGMPlay/ChipMapper.c
index 0c27432..a16d238 100644
--- a/VGMPlay/ChipMapper.c
+++ b/VGMPlay/ChipMapper.c
@@ -17,11 +17,21 @@
 #else
 #ifndef DISABLE_HW_SUPPORT
 #include <unistd.h>
+#ifdef __APPLE__
+#include <architecture/i386/io.h>
+#else
 #include <sys/io.h>
+#endif /* __APPLE__ */
 #endif
 #include <time.h>
 #endif

+#ifdef __APPLE__
+#define ioperm(x,y,z) 0
+#define outb(x,y) 0
+#define inb(x) 0
+#endif
+
 #include "chips/mamedef.h"

 #include "chips/ChipIncl.h"
diff --git a/VGMPlay/Makefile b/VGMPlay/Makefile
index 0de15b5..b3099a1 100644
--- a/VGMPlay/Makefile
+++ b/VGMPlay/Makefile
@@ -8,11 +8,18 @@
 # TODO: Make this look less horrible.
 # TODO: Make it not include pt_ioctl.c when DISABLE_HW_SUPPORT is active.

+# Uncomment if you build on Mac OSX
+MACOSX = 1
+
 # Uncomment if you build on Windows using MinGW.
 #WINDOWS = 1

 # Uncomment if you want to use libao instead of OSS for sound streaming under Linux
 USE_LIBAO = 1
+# Mac requires libAO
+ifdef MACOSX
+USE_LIBAO = 1
+endif

 CC = gcc
 PREFIX = /usr/local
@@ -43,6 +50,11 @@ LDFLAGS := -lm -lz $(LDFLAGS)
 ifdef WINDOWS
 # for Windows, add kernel32 and winmm (Multimedia APIs)
 LDFLAGS += -lkernel32 -lwinmm
+else MACOSX
+CFLAGS += -I/usr/include/malloc
+MAINFLAGS += -pthread -DSHARE_PREFIX=\"$(PREFIX)\"
+# Mac requires libAO
+LDFLAGS += -lao
 else
 # for Linux, add librt (clock stuff) and libpthread (threads)
 LDFLAGS += -lrt -lpthread -pthread
diff --git a/VGMPlay/Stream.c b/VGMPlay/Stream.c
index b24cac2..2bb58ae 100644
--- a/VGMPlay/Stream.c
+++ b/VGMPlay/Stream.c
@@ -16,6 +16,8 @@
 #include <fcntl.h>
 #ifdef __NetBSD__
 #include <sys/audioio.h>
+#elif defined(__APPLE__)
+// nothing
 #else
 #include <linux/soundcard.h>
 #endif
diff --git a/VGMPlay/VGMPlay.c b/VGMPlay/VGMPlay.c
index c24e8ae..93e1d95 100644
--- a/VGMPlay/VGMPlay.c
+++ b/VGMPlay/VGMPlay.c
@@ -44,7 +44,27 @@
 #else  //ifdef UNIX
 #include <limits.h>        // for PATH_MAX
 #include <pthread.h>   // for pthread functions
+
+// (suitable?) Apple substitute for clock_gettime()
+#ifdef __MACH__
+#include <mach/mach_time.h>
+#define CLOCK_REALTIME 0
+#define CLOCK_MONOTONIC 0
+int clock_gettime(int clk_id, struct timespec *t){
+    mach_timebase_info_data_t timebase;
+    mach_timebase_info(&timebase);
+    uint64_t time;
+    time = mach_absolute_time();
+    double nseconds = ((double)time * (double)timebase.numer)/((double)timebase.denom);
+    double seconds = ((double)time * (double)timebase.numer)/((double)timebase.denom * 1e9);
+    t->tv_sec = seconds;
+    t->tv_nsec = nseconds;
+    return 0;
+}
+#else
 #include <time.h>      // for clock_gettime()
+#endif
+
 #include <unistd.h>        // for usleep()

 #define MAX_PATH   PATH_MAX