samba - Mar 2022 - Trouble cross compiling samba 4.15.5 for arm32. Problem with samba-bgqd.c

Hi Samba people,

I have been able to successfully cross compile samba 4.14.12 for arm32 however
if I try to cross compile samba 4.15.5 I get an error as follows in the make
stage. The issue seems to be with newly introduced source file
"source3/printing/samba-bgqd.c"

../../source3/printing/samba-bgqd.c: In function ?main?:
../../source3/printing/samba-bgqd.c:340:28: error: ?SIGPIPE? undeclared (first
use in this function); did you mean ?SNDPIPE??
  340 |         BlockSignals(true, SIGPIPE);
      |                            ^~~~~~~
      |                            SNDPIPE
../../source3/printing/samba-bgqd.c:340:28: note: each undeclared identifier is
reported only once for each function it appears in
In file included from ../../source3/locking/share_mode_lock.h:20,
                 from ../../source3/printing/samba-bgqd.c:21:
../../source3/printing/samba-bgqd.c:384:28: error: ?SIGTERM? undeclared (first
use in this function)
  384 |                 ev, frame, SIGTERM, 0, bgqd_sig_term_handler,
&done);
      |                            ^~~~~~~
../../lib/tevent/tevent.h:412:41: note: in definition of macro
?tevent_add_signal?
  412 |         _tevent_add_signal(ev, mem_ctx, signum, sa_flags, handler,
private_data, \
      |                                         ^~~~~~


The problem can be fixed by adding the following include directive to
"source3/printing/samba-bgqd.c"

    #include <signal.h>

However, I wonder if there could be something else I need to check. Any advice?

I'm using gcc 11.2.0 and cross compiling using OpenSUSE Tumbleweed on both
PC and Raspberry Pi.

I have no problems doing a native build of samba 4.15.5 on either of those build
hosts.

Thanks very much for your help.

Berto.