*** ./md5.h.ORIG	Wed Apr 13 17:34:01 2011
--- ./md5.h	Wed Apr 13 17:34:16 2011
***************
*** 25,31 ****
--- 25,33 ----
  #ifndef _MD5_H
  #define _MD5_H 1
  
+ #ifndef _AIX51
  #include <stdint.h>
+ #endif
  
  #include "lrzip_private.h"
  
*** ./sha4.h.ORIG	Wed Apr 13 17:34:24 2011
--- ./sha4.h	Wed Apr 13 17:34:42 2011
***************
*** 26,31 ****
--- 26,35 ----
  #ifndef POLARSSL_SHA4_H
  #define POLARSSL_SHA4_H
  
+ #ifdef _AIX
+ #include <inttypes.h>
+ #endif
+ 
  #if defined(_MSC_VER) || defined(__WATCOMC__)
    #define UL64(x) x##ui64
    #define int64 __int64
*** ./zpipe.cpp.ORIG	Wed Apr 13 17:34:52 2011
--- ./zpipe.cpp	Wed Apr 13 17:35:22 2011
***************
*** 1486,1501 ****
    int ph, pm;  // sizes of H and M in z
    ZPAQL z;     // holds PCOMP
  public:
!   PostProcessor(ZPAQL& hz);
    void set(FILE* out, SHA1* p) {z.output=out; z.sha1=p;}  // Set output
    void write(int c);  // Input a byte
  };
  
  // Copy ph, pm from block header
! PostProcessor::PostProcessor(ZPAQL& hz) {
    state=0;
!   ph=hz.header[4];
!   pm=hz.header[5];
  }
  
  // (PASS=0 | PROG=1 psize[0..1] pcomp[0..psize-1]) data... EOB=-1
--- 1486,1501 ----
    int ph, pm;  // sizes of H and M in z
    ZPAQL z;     // holds PCOMP
  public:
!   PostProcessor(ZPAQL& AIXhz);
    void set(FILE* out, SHA1* p) {z.output=out; z.sha1=p;}  // Set output
    void write(int c);  // Input a byte
  };
  
  // Copy ph, pm from block header
! PostProcessor::PostProcessor(ZPAQL& AIXhz) {
    state=0;
!   ph=AIXhz.header[4];
!   pm=AIXhz.header[5];
  }
  
  // (PASS=0 | PROG=1 psize[0..1] pcomp[0..psize-1]) data... EOB=-1
*** ./lrzip_private.h.ORIG	Wed Apr 13 17:35:32 2011
--- ./lrzip_private.h	Wed Apr 13 17:36:33 2011
***************
*** 24,30 ****
--- 24,32 ----
  #define STREAM_BUFSIZE (1024 * 1024 * 10)
  
  #include <stdlib.h>
+ #ifndef _AIX51
  #include <stdint.h>
+ #endif
  #include <stdio.h>
  #ifdef HAVE_STRING_H
  # include <string.h>
***************
*** 81,88 ****
--- 83,95 ----
  extern int errno;
  #endif
  
+ #ifdef __GNUC__
  #define likely(x)	__builtin_expect(!!(x), 1)
  #define unlikely(x)	__builtin_expect(!!(x), 0)
+ #else
+ #define likely(cond)  (cond)
+ #define unlikely(cond)        (cond)
+ #endif
  
  typedef long long int i64;
  typedef uint32_t u32;
***************
*** 91,97 ****
  typedef struct md5_ctx md5_ctx;
  
  #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
! 	defined(__APPLE__) || defined(__CYGWIN__)
   #define mremap fake_mremap
  #endif
  
--- 98,104 ----
  typedef struct md5_ctx md5_ctx;
  
  #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
! 	defined(__APPLE__) || defined(__CYGWIN__) || defined(_AIX)
   #define mremap fake_mremap
  #endif
  
*** ./util.c.ORIG	Wed Apr 13 17:36:43 2011
--- ./util.c	Wed Apr 13 17:36:59 2011
***************
*** 41,51 ****
--- 41,53 ----
  #endif
  #include <termios.h>
  
+ #ifndef _AIX
  #ifdef _SC_PAGE_SIZE
  # define PAGE_SIZE (sysconf(_SC_PAGE_SIZE))
  #else
  # define PAGE_SIZE (4096)
  #endif
+ #endif
  
  #include <sys/types.h>
  #include <sys/stat.h>
*** ./stream.c.ORIG	Wed Apr 13 17:37:10 2011
--- ./stream.c	Wed Apr 13 17:38:00 2011
***************
*** 58,64 ****
  #include "lrzip.h"
  
  
! #ifdef __APPLE__
  # define fmemopen fake_fmemopen
  # define open_memstream fake_open_memstream
  # define memstream_update_buffer fake_open_memstream_update_buffer
--- 58,64 ----
  #include "lrzip.h"
  
  
! #if defined(__APPLE__) || defined(_AIX)
  # define fmemopen fake_fmemopen
  # define open_memstream fake_open_memstream
  # define memstream_update_buffer fake_open_memstream_update_buffer
*** ./main.c.ORIG	Tue Jul 26 10:00:54 2011
--- ./main.c	Tue Jul 26 10:01:19 2011
***************
*** 145,150 ****
--- 145,158 ----
  
  	return ramsize;
  }
+ #elif _AIX
+ static inline i64 get_ram(void)
+ {
+         i64 ramsize;
+ 
+         ramsize = (i64)sysconf(_SC_PHYS_PAGES) * (i64)sysconf(_SC_PAGE_SIZE);
+         return ramsize;
+ }
  #else /* __APPLE__ */
  static inline i64 get_ram(void)
  {