init: do not fail build if SIGPWR is not defined

Apparently, some *BSD variants (and maybe some other OSes) does not define
SIGPWR signal.  So since commit 760fc6debcba8c, busybox fails to build on
such platforms.  Fix this.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/init/init.c b/init/init.c
index d29328c36f9a801af03a5ff403746fe9c41c74a0..de438be20551755099bf12be2e9c09fea60bdb35 100644 (file)
--- a/init/init.c
+++ b/init/init.c
@@ -1135,7 +1135,9 @@ int init_main(int argc UNUSED_PARAM, char **argv)
                struct sigaction sa;
 
                bb_signals(0
+#ifdef SIGPWR
                        + (1 << SIGPWR)  /* halt */
+#endif
                        + (1 << SIGUSR1) /* halt */
                        + (1 << SIGTERM) /* reboot */
                        + (1 << SIGUSR2) /* poweroff */