[Libc] add HAVE_SYS_SIGNALS config

BernardXiong · BernardXiong · commit 8203b6004b9e · 2018-03-04T17:27:11.000+08:00
diff --git a/components/libc/Kconfig b/components/libc/Kconfig
@@ -29,4 +29,10 @@ if RT_USING_LIBC && RT_USING_DFS
     endif
 endif
 
+config HAVE_SYS_SIGNALS
+    bool "Toolchains/libc has sigval/sigevent structure definitions"
+    default n
+    help
+        Toolchains/libc has sigval/sigevent/siginfo_t definitions.
+
 endmenu
