unexpected EINTR using make 3.80 on IPF

[Martin Sebor]

I'm seeing strange behavior using 3.80 on HP-UX 11.22 (IPF).
IIRC, make worked fine on this system at some point in the
past but something may have changed (e.g., an OS update).
Has anyone else experienced something like this? Any idea
what might be causing it and suggestions how do restore sane
behavior?

Thanks
Martin

$ cat makefile; gmake -v && gmake all
all:
        echo $@
GNU Make 3.80
Copyright (C) 2002  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
echo all
all
gmake: *** wait: Interrupted system call.  Stop.
gmake: *** Waiting for unfinished jobs....

Running make under truss shows this on output:

$ truss gmake all
...
echo all
write(1, "e c h o   a l l \n", 9)                          = 9
...
fork()                                                     = 23886
...
all
  Received signal 18, SIGCLD, in wait(), [caught]
    Siginfo: child pid 23886, CLD_EXITED (status 0), si_errno: 0
wait(0x7b03c6d0)                                           ERR#4 EINTR
...