Berkeley DB XML Reference Guide: AIX

Berkeley DB XML Reference Guide:
Building Berkeley DB XML for UNIX/POSIX systems

AIX

See Also Berkeley DB notes on AIX

Normal build command for AIX using xlC_r and xlc_r and no options:
```
sh buildall.sh -x xlC_r -c xlc_r
```
I get a link error regarding open and open64 on AIX 5.3 while linking against Berkeley DB.
On AIX 5.3, you may see a link failure while building Berkeley DB XML against Berkeley DB 4.8.x with "open" or "open64" in the message. This may occur when trying to link dbxml_dump or dbxml_load.

This can be worked around by adding this line to db-4.8.x/build_unix/db_cxx.h:
```
#include <fcntl.h>
```
It should be added near the top of the file, before the include of db.h. After this, rebuild Berkeley DB by changing to the directory db-4.8.x/build_unix and running "make clean; make; make install."
I get an error regarding truncate64 and stat64 on AIX 5.3 while building Berkeley DB.
On AIX 5.3, you may see a compilation failure while building Berkeley DB 4.3.29 of the nature, "...truncate64 is not a member of..." or "...stat64 is not a member of..."

This can be worked around by adding this line to db-4.3.29/dbinc/db.in:
```
#include <unistd.h>
```
It should be added just after the line "#ifndef __NO_SYSTEM_INCLUDES." After this, re-run the buildall.sh script, and be sure that Berkeley DB configures itself again, regnerating the file, db-4.3.29/build_unix/db.h.