From 521d232154c4de9cd7a046d0e03a872ab0a8d47a Mon Sep 17 00:00:00 2001
From: Jasmin Jessich <jasmin@anw.at>
Date: Mon, 31 Aug 2015 00:11:27 +0200
Subject: Fix for issue #147: Enable definition of "Use __cxa_atexit" for
 bare-metal systems, if the used libc does provide such a function. The libc
 configuration have to select LIBC_PROVIDES_CXA_ATEXIT.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>

diff --git a/config/cc/gcc.in.2 b/config/cc/gcc.in.2
index fb19938..cbad638 100644
--- a/config/cc/gcc.in.2
+++ b/config/cc/gcc.in.2
@@ -165,7 +165,7 @@ config CC_CXA_ATEXIT
     bool
     prompt "Use __cxa_atexit"
     default y
-    depends on ! BARE_METAL
+    depends on ! BARE_METAL || LIBC_PROVIDES_CXA_ATEXIT
     help
       If you get the missing symbol "__cxa_atexit" when building C++ programs,
       you might want to try disabling this option.
diff --git a/config/libc.in b/config/libc.in
index ca597c8..4cc7530 100644
--- a/config/libc.in
+++ b/config/libc.in
@@ -35,6 +35,9 @@ config LIBC_SUPPORT_THREADS_LT
 config LIBC_SUPPORT_THREADS_NONE
     bool
 
+config LIBC_PROVIDES_CXA_ATEXIT
+    bool
+
 # C libraries should provide other values
 config THREADS
     string
-- 
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