libs/pthread: disable pthread_kill when no signals

pthread_kill depends on signasl, so when all signals are disabled
 disable pthread_kill too

Signed-off-by: Chengdong Wang <wangchengdong@lixiang.com>

libs/libc/pthread/CMakeLists.txt

@@ -76,7 +76,6 @@ if(NOT CONFIG_DISABLE_PTHREAD)
     pthread_create.c
     pthread_equal.c
     pthread_exit.c
-    pthread_kill.c
     pthread_setname_np.c
     pthread_getname_np.c
     pthread_get_stackaddr_np.c
@@ -132,6 +131,10 @@ if(NOT CONFIG_DISABLE_PTHREAD)
     list(APPEND SRCS pthread_spinlock.c)
   endif()
 
+  if(NOT CONFIG_DISABLE_ALL_SIGNALS)
+    list(APPEND SRCS pthread_kill.c)
+  endif()
+
   if(NOT CONFIG_TLS_NCLEANUP EQUAL 0)
     list(APPEND SRCS pthread_cleanup.c)
   endif()

libs/libc/pthread/Make.defs

@@ -47,7 +47,7 @@ CSRCS += pthread_condattr_getpshared.c pthread_condattr_setpshared.c
 CSRCS += pthread_condattr_setclock.c pthread_condattr_getclock.c
 CSRCS += pthread_condinit.c pthread_conddestroy.c pthread_condtimedwait.c
 CSRCS += pthread_equal.c pthread_condbroadcast.c pthread_condclockwait.c pthread_condsignal.c
-CSRCS += pthread_condwait.c pthread_create.c pthread_exit.c pthread_kill.c
+CSRCS += pthread_condwait.c pthread_create.c pthread_exit.c
 CSRCS += pthread_setname_np.c pthread_getname_np.c
 CSRCS += pthread_get_stackaddr_np.c pthread_get_stacksize_np.c
 CSRCS += pthread_mutexattr_init.c pthread_mutexattr_destroy.c
@@ -69,6 +69,10 @@ CSRCS += pthread_testcancel.c pthread_getcpuclockid.c
 CSRCS += pthread_self.c pthread_gettid_np.c
 CSRCS += pthread_concurrency.c
 
+ifneq ($(CONFIG_DISABLE_ALL_SIGNALS),y)
+CSRCS += pthread_kill.c
+endif
+
 ifeq ($(CONFIG_SMP),y)
 CSRCS += pthread_attr_getaffinity.c pthread_attr_setaffinity.c
 endif

libs/libc/pthread/pthread_mutex_destroy.c

@@ -90,6 +90,7 @@ int pthread_mutex_destroy(FAR pthread_mutex_t *mutex)
            * nxsched_get_tcb() does.
            */
 
+#ifndef CONFIG_DISABLE_ALL_SIGNALS
           if (pthread_kill(pid, 0) != 0)
             {
               /* The thread associated with the PID no longer exists */
@@ -121,6 +122,7 @@ int pthread_mutex_destroy(FAR pthread_mutex_t *mutex)
                 }
             }
           else
+#endif
             {
               ret = EBUSY;
             }