Merge pull request #148 from jasmin-j/fix_147

Use __cxa_atexit for bare-metal systems, if the used libc provides such a function.
crosstool-ng · Sep 5, 2015 · c01a5f0 · c01a5f0
2 parents f4bfca0 + 521d232
commit c01a5f0
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diff --git 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
@@ -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