2010-06-08 Jeff Johnston <jjohnstn@redhat.com>

* configure.in: Add test for enable-newlib-register-fini
        to set the _WANT_REGISTER_FINI flag.
        * configure: Regenerated.
        * Makefile.in: Ditto.
        * newlib.hin: Add _WANT_REGISTER_FINI flag.
        * libc/stdlib/__call_atexit.c: Add test for
        _WANT_REGISTER_FINI to enable the register_fini function.

newlib/ChangeLog

@@ -1,3 +1,13 @@
+2010-06-08  Jeff Johnston  <jjohnstn@redhat.com>
+
+	* configure.in: Add test for enable-newlib-register-fini
+	to set the _WANT_REGISTER_FINI flag.
+	* configure: Regenerated.
+	* Makefile.in: Ditto.
+	* newlib.hin: Add _WANT_REGISTER_FINI flag.
+	* libc/stdlib/__call_atexit.c: Add test for
+	_WANT_REGISTER_FINI to enable the register_fini function.
+
 2010-06-04  Mark Mitchell  <mark@codesourcery.com>
 
 	* libc/stdlib/__call_atexit.c (__libc_fini): Declare.

newlib/configure

@@ -822,6 +822,7 @@ ac_user_opts='
 enable_option_checking
 enable_newlib_io_pos_args
 enable_newlib_io_c99_formats
+enable_newlib_register_fini
 enable_newlib_io_long_long
 enable_newlib_io_long_double
 enable_newlib_mb
@@ -1495,6 +1496,7 @@ Optional Features:
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
   --enable-newlib-io-pos-args enable printf-family positional arg support
   --enable-newlib-io-c99-formats   enable C99 support in IO functions like printf/scanf
+  --enable-newlib-register-fini   enable finalization function registration using atexit
   --enable-newlib-io-long-long   enable long long type support in IO functions like printf/scanf
   --enable-newlib-io-long-double   enable long double type support in IO functions printf/scanf
   --enable-newlib-mb        enable multibyte support
@@ -2051,6 +2053,19 @@ else
   newlib_io_c99_formats=
 fi
 
+# Check whether --enable-newlib-register-fini was given.
+if test "${enable_newlib_register_fini+set}" = set; then
+  enableval=$enable_newlib_register_fini; case "${enableval}" in
+  yes) newlib_register_fini=yes;;
+  no)  newlib_register_fini=no ;;
+  *)   { { $as_echo "$as_me:$LINENO: error: bad value ${enableval} for newlib-register-fini option" >&5
+$as_echo "$as_me: error: bad value ${enableval} for newlib-register-fini option" >&2;}
+   { (exit 1); exit 1; }; } ;;
+ esac
+else
+  newlib_register_fini=
+fi
+
 # Check whether --enable-newlib-io-long-long was given.
 if test "${enable_newlib_io_long_long+set}" = set; then
   enableval=$enable_newlib_io_long_long; case "${enableval}" in
@@ -12590,7 +12605,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12593 "configure"
+#line 12608 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12696,7 +12711,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12699 "configure"
+#line 12714 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13083,6 +13098,13 @@ _ACEOF
 
 fi
 
+if test "${newlib_register_fini}" = "yes"; then
+cat >>confdefs.h <<_ACEOF
+#define _WANT_REGISTER_FINI 1
+_ACEOF
+
+fi
+
 if test "${newlib_io_long_long}" = "yes"; then
 cat >>confdefs.h <<_ACEOF
 #define _WANT_IO_LONG_LONG 1

newlib/configure.in

@@ -29,6 +29,15 @@ AC_ARG_ENABLE(newlib-io-c99-formats,
   *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-c99-formats option) ;;
  esac], [newlib_io_c99_formats=])dnl
 
+dnl Support --enable-newlib-register-fini
+AC_ARG_ENABLE(newlib-register-fini,
+[  --enable-newlib-register-fini   enable finalization function registration using atexit],
+[case "${enableval}" in
+  yes) newlib_register_fini=yes;;
+  no)  newlib_register_fini=no ;;
+  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-register-fini option) ;;
+ esac], [newlib_register_fini=])dnl
+
 dnl Support --enable-newlib-io-long-long
 AC_ARG_ENABLE(newlib-io-long-long,
 [  --enable-newlib-io-long-long   enable long long type support in IO functions like printf/scanf],
@@ -244,6 +253,10 @@ if test "${newlib_io_c99_formats}" = "yes"; then
 AC_DEFINE_UNQUOTED(_WANT_IO_C99_FORMATS)
 fi
 
+if test "${newlib_register_fini}" = "yes"; then
+AC_DEFINE_UNQUOTED(_WANT_REGISTER_FINI)
+fi
+
 if test "${newlib_io_long_long}" = "yes"; then
 AC_DEFINE_UNQUOTED(_WANT_IO_LONG_LONG)
 fi

newlib/libc/stdlib/__call_atexit.c

@@ -15,6 +15,8 @@ void free(void *) _ATTRIBUTE((__weak__));
 extern _LOCK_RECURSIVE_T __atexit_lock;
 #endif
 
+#ifdef _WANT_REGISTER_FINI
+
 /* If "__libc_fini" is defined, finalizers (either
    "__libc_fini_array", or "_fini", as appropriate) will be run after
    all user-specified atexit handlers.  For example, you can define
@@ -51,6 +53,8 @@ register_fini(void)
   }
 }
 
+#endif /* _WANT_REGISTER_FINI  */
+
 /*
  * Call registered exit handlers.  If D is null then all handlers are called,
  * otherwise only the handlers from that DSO are called.

newlib/newlib.hin

@@ -19,6 +19,9 @@
 /* long long type support in IO functions like printf/scanf enabled */
 #undef _WANT_IO_LONG_LONG
 
+/* Register application finalization function using atexit. */
+#undef _WANT_REGISTER_FINI
+
 /* long double type support in IO functions like printf/scanf enabled */
 #undef _WANT_IO_LONG_DOUBLE