diff --git a/acconfig.h b/acconfig.h
index 77efb5848c..cb6acbf8ee 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -45,6 +45,7 @@ static /**/const char *const rcsid[] = { (char *)rcsid, "\100(#)" msg }
 #undef STRUCT_INODE_HAS_I_TRUNCATE_SEM
 #undef STRUCT_TASK_STRUCT_HAS_PARENT
 #undef STRUCT_TASK_STRUCT_HAS_REAL_PARENT
+#undef STRUCT_TASK_STRUCT_HAS_SIG
 #undef STRUCT_TASK_STRUCT_HAS_SIGHAND
 #undef STRUCT_TASK_STRUCT_HAS_SIGMASK_LOCK
 #undef ssize_t
diff --git a/acinclude.m4 b/acinclude.m4
index d6edf86b32..b7180ddc82 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -154,6 +154,7 @@ case $system in
 		 LINUX_RECALC_SIGPENDING_ARG_TYPE
 		 LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_PARENT
 		 LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_REAL_PARENT
+		 LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIG
 		 LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGHAND
 		 LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGMASK_LOCK
 		 LINUX_WHICH_MODULES
@@ -243,6 +244,9 @@ case $system in
 		 if test "x$ac_cv_linux_sched_struct_task_struct_has_sighand" = "xyes"; then 
 		  AC_DEFINE(STRUCT_TASK_STRUCT_HAS_SIGHAND, 1, [define if your struct task_struct has sighand])
 		 fi
+		 if test "x$ac_cv_linux_sched_struct_task_struct_has_sig" = "xyes"; then 
+		  AC_DEFINE(STRUCT_TASK_STRUCT_HAS_SIG, 1, [define if your struct task_struct has sig])
+		 fi
                 :
 		fi
                 ;;
diff --git a/src/cf/linux-test4.m4 b/src/cf/linux-test4.m4
index b5df711c5d..6b4386b182 100644
--- a/src/cf/linux-test4.m4
+++ b/src/cf/linux-test4.m4
@@ -298,6 +298,21 @@ AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_real_parent)
 CPPFLAGS="$save_CPPFLAGS"])
 
 
+AC_DEFUN(LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIG, [
+AC_MSG_CHECKING(for sig in struct task_struct)
+save_CPPFLAGS="$CPPFLAGS"
+CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -D__KERNEL__ $CPPFLAGS"
+AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_sig,
+[
+AC_TRY_COMPILE(
+[#include <linux/sched.h>],
+[struct task_struct _tsk;
+printf("%d\n", _tsk.sig);],
+ac_cv_linux_sched_struct_task_struct_has_sig=yes,
+ac_cv_linux_sched_struct_task_struct_has_sig=no)])
+AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_sig)
+CPPFLAGS="$save_CPPFLAGS"])
+
 AC_DEFUN(LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGMASK_LOCK, [
 AC_MSG_CHECKING(for sigmask_lock in struct task_struct)
 save_CPPFLAGS="$CPPFLAGS"