From sveta.andic@tab.co.nz Tue Mar 27 00:09:38 2001
Date: Tue, 27 Mar 2001 17:30:37 +1200
From: Svetozar Andic
To: smcpeak@cs.berkeley.edu
Subject: Porting SafeTP to AIX


Hi,
I have managed to successfully compile, link and run your SafeTP server
on our AIX machine. We are using AIX 4.2.1.0 on our IBM SP machines. I
did the compiling with GNU C/C++ compiler version 2.95.1. The version of
SafeTP was 1.46 unpacked from the source tarball.

-----

Here is what I had to do to get things going:
 
                               Building the Code


1) Configure script incompleteness.

In the configure script in the 'case "$target" in' statement in line
1353, I have added the *aix* switch:

  *aix*)
    echo "$ac_t""adding AIX-specific stuff" 1>&6
    CFLAGS="$CFLAGS -O2 -D_ALL_SOURCE -D_ANSI_C_SOURCE -D_POSIX_SOURCE"
    ;;

This adds proper flags to the CFLAGS macro for AIX.

2) A number of executable targets failed during linking due to the
undefined symbol 'userConfigDir'.

I took the 'primitive' approach and stuck the usercfg.o object file into
the 'sftp-objs' macro in the Makefile.in file. That made the object file
available to every executable target. This was probably not the right
thing to do, but it worked for me.

3) Un-resolvable symbol 'bzero' during linking.

Including <strings.h>  on AIX solves the problem.

In socket.h, in line 36 I changed the following:

#ifdef __OSF1__
#  include <strings.h>     // bzero for FD_SET
#endif

to say:

#if defined(__OSF1__) || defined(_AIX)
#  include <strings.h>     // bzero for FD_SET
#endif

4) The BIG_ENDIAN/LITTLE_ENDIAN mess.

On AIX there is a file /usr/include/sys/machine.h that defines
BIG_ENDIAN, LITTLE_ENDIAN and BYTE_ORDER macros. On RS/6000 machines
BYTE_ORDER is defined as BIG_ENDIAN. However, LITTLE_ENDIAN is still
defined which makes the sockutil.cpp throw an exception during the test
run.

So, in sockutil.cpp I have changed the block of code that says:

 // verify endianness
 #if defined(LITTLE_ENDIAN)
   if (isBigEndian()) {
     xfailure("LITTLE_ENDIAN is defined but isBigEndian() returns true");
   }
 #elif defined(BIG_ENDIAN)
   if (!isBigEndian()) {
     xfailure("BIG_ENDIAN is defined but isBigEndian() returns false");
   }
 #else
   xfailure("neither LITTLE_ENDIAN nor BIG_ENDIAN are defined");
 #endif

to this:

#ifndef _AIX
  // verify endianness
  #if defined(LITTLE_ENDIAN)
    if (isBigEndian()) {
      xfailure("LITTLE_ENDIAN is defined but isBigEndian() returns
true");
    }
  #elif defined(BIG_ENDIAN)
    if (!isBigEndian()) {
      xfailure("BIG_ENDIAN is defined but isBigEndian() returns false");
    }
  #else
    xfailure("neither LITTLE_ENDIAN nor BIG_ENDIAN are defined");
  #endif
#else
  #if BYTE_ORDER == LITTLE_ENDIAN
    if (isBigEndian()) {
      xfailure("LITTLE_ENDIAN is defined but isBigEndian() returns
true");
    }
  #elif BYTE_ORDER == BIG_ENDIAN
    if (!isBigEndian()) {
      xfailure("BIG_ENDIAN is defined but isBigEndian() returns false");
    }
  #else
    xfailure("neither LITTLE_ENDIAN nor BIG_ENDIAN are defined");
  #endif
#endif

Not too elegant,  but works.

Also in the same file (sockutil.cpp) there is a series of #ifdef - #elif
tests that are used to determine the type of the address length argument
for some of the socket calls. I added the test for AIX that says:

...
#elif defined(_AIX)
#  define LENGTH_PARAM size_t
...

--------------------------

That was it.  After these changes were in, I ran the './configure - gmake
- gmake check' and everything went OK.

I hope this will help bringing this fine product to AIX users too.
However, I do not have access to the latest AIX versions (not yet) and I
can't say that this will work with the later (or the earlier for that
matter) versions of AIX.