Clean up SIGCHLD handling a bit.

* process.c, process.h (catch_child_signal):
Now always extern, even if !NS_IMPL_GNUSTEP.
* process.c (catch_child_signal): Move glib tickler here from
init_process_emacs, so that it's done earlier in Emacs
initialization.  Also move the noninteractive && !initialized
check here from init_process_emacs.  This is all a bit cleaner for
GNUish platforms, and I hope it works around the Cygwin bug.
* sysdep.c (init_signals): Invoke catch_child_signal here, so
that glib signal handling is tickled before glib creates threads.

Fixes: debbugs:14569

1 files changed, 2 insertions, 0 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index 1d3e646d359..c2769865b5d 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -1901,6 +1901,8 @@ init_signals (bool dumping)
       sigaction (SIGFPE, &action, 0);
     }
 
+  catch_child_signal ();
+
 #ifdef SIGUSR1
   add_user_signal (SIGUSR1, "sigusr1");
 #endif