issue-496: Fix possible deadlock in thread+fork

This patch adds a pthread_atfork handler to set the internal
locks in consistent state.

1 files changed, 11 insertions, 0 deletions

diff --git a/configure b/configure
index a5c1763..1b7c5cf 100755
--- a/configure
+++ b/configure
@@ -15114,6 +15114,17 @@ _ACEOF
 fi
 done
          # for turning off services when run as root
+for ac_func in fork
+do :
+  ac_fn_c_check_func "$LINENO" "fork" "ac_cv_func_fork"
+if test "x$ac_cv_func_fork" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_FORK 1
+_ACEOF
+
+fi
+done
+            # for the pthread_atfork setup
 for ac_header in features.h
 do :
   ac_fn_c_check_header_mongrel "$LINENO" "features.h" "ac_cv_header_features_h" "$ac_includes_default"