util/include/platforms/unix/axutil_unix.h: invalid duplicate declaration of usleep

util/include/platforms/unix/axutil_unix.h contains the following block:

/* for file access handling */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
extern int usleep (__useconds_t __useconds);
#endif /*HAVE_UNISTD_H */

The problem is that:

• usleep() is already declared in unistd.h : extern int usleep(useconds_t);
• __useconds_t does not exists on AIX

This error blocks the build on AIX 5.2.

Here is the build log:

Making all in platforms/unix
/home/prodfs/otp/axis2c-src-1.6.0/util/src/platforms/unix
source='uuid_gen_unix.c' object='uuid_gen_unix.lo' libtool=yes DEPDIR=.deps depmode=aix /bin/sh ../../../depcomp /bin/sh ../../../libtool --tag=CC --mode=compile cc -qlanglvl=extc89 -DHAVE_CONFIG_H -I. -I../../.. -I../../../include -I../../../include/platforms -I../../../include/platforms/unix -g -D_LARGEFILE64_SOURCE -c -o uuid_gen_unix.lo uuid_gen_unix.c
cc -qlanglvl=extc89 -DHAVE_CONFIG_H -I. -I../../.. -I../../../include -I../../../include/platforms -I../../../include/platforms/unix -g -D_LARGEFILE64_SOURCE -c -M uuid_gen_unix.c -DPIC -o .libs/uuid_gen_unix.o
"../../../include/platforms/unix/axutil_unix.h", line 119.10: 1506-296 (S) #include file <getopt.h> not found.
"../../../include/platforms/unix/axutil_unix.h", line 125.33: 1506-275 (S) Unexpected text __useconds encountered.
"../../../include/platforms/unix/axutil_unix.h", line 125.12: 1506-282 (S) The type of the parameters must be specified in a prototype.
make: The error code from the last command is 1.