2014-07-04 Bin Cheng <bin.cheng@arm.com>

        * README (--enable-newlib-nano-formatted-io): Describe.
        * acconfig.h (_NANO_FORMATTED_IO): Undef.
        * newlib.hin (_NANO_FORMATTED_IO): Undef.
        * configure.in (--enable-newlib-nano-formatted-io): New option.
        * configure: Regenerated.
        * libc/configure.in (--enable-newlib-nano-formatted-io): New option.
        * libc/configure: Regenerated.
        * libc/stdio/Makefile.am (NEWLIB_NANO_FORMATTED_IO): Support new
        configuration option.
        * libc/stdio/Makefile.in: Regenerated.
        * libc/stdio/asnprintf.c (_asniprintf_r, asniprintf): Use
        _NANO_FORMATTED_IO to declare alias prototypes.
        * libc/stdio/asprintf.c (_asiprintf_r, asiprintf): Ditto.
        * libc/stdio/dprintf.c (_diprintf_r, diprintf): Ditto.
        * libc/stdio/fprintf.c (_fiprintf_r, fiprintf): Ditto.
        * libc/stdio/fscanf.c (fiscanf, _fiscanf_r): Ditto.
        * libc/stdio/printf.c (_iprintf_r, iprintf): Ditto.
        * libc/stdio/scanf.c (iscanf, _iscanf_r): Ditto.
        * libc/stdio/snprintf.c (_sniprintf_r, sniprintf): Ditto.
        * libc/stdio/sprintf.c (_siprintf_r, siprintf): Ditto.
        * libc/stdio/sscanf.c (siscanf, _siscanf_r): Ditto.
        * libc/stdio/vasnprintf.c (_vasniprintf_r, vasniprintf): Ditto.
        * libc/stdio/vasprintf.c (vasiprintf, _vasiprintf_r): Ditto.
        * libc/stdio/vdprintf.c (_vdiprintf_r, vdiprintf): Ditto.
        * libc/stdio/vprintf.c (viprintf, _viprintf_r): Ditto.
        * libc/stdio/vscanf.c (viscanf, _viscanf_r): Ditto.
        * libc/stdio/vsnprintf.c (vsniprintf, _vsniprintf_r): Ditto.
        * libc/stdio/vsprintf.c (vsiprintf, _vsiprintf_r): Ditto.
        * libc/stdio/vsscanf.c (vsiscanf, _vsiscanf_r): Ditto.
        * libc/stdio/nano-vfprintf.c: New file.
        * libc/stdio/nano-vfprintf_float.c: New file.
        * libc/stdio/nano-vfprintf_i.c: New file.
        * libc/stdio/nano-vfprintf_local.h: New file.
        * libc/stdio/nano-vfscanf.c: New file.
        * libc/stdio/nano-vfscanf_float.c: New file.
        * libc/stdio/nano-vfscanf_i.c: New file.
        * libc/stdio/nano-vfscanf_local.h: New file.

1 files changed, 21 insertions, 0 deletions

diff --git a/newlib/configure b/newlib/configure
index 4d39bb5a1..991f9e6b5 100755
--- a/newlib/configure
+++ b/newlib/configure
@@ -817,6 +817,7 @@ enable_newlib_wide_orient
 enable_newlib_nano_malloc
 enable_newlib_unbuf_stream_opt
 enable_lite_exit
+enable_newlib_nano_formatted_io
 enable_multilib
 enable_target_optspace
 enable_malloc_debugging
@@ -1485,6 +1486,7 @@ Optional Features:
   --enable-newlib-nano-malloc    use small-footprint nano-malloc implementation
   --disable-newlib-unbuf-stream-opt    disable unbuffered stream optimization in streamio
   --enable-lite-exit	enable light weight exit
+  --enable-newlib-nano-formatted-io    Use nano version formatted IO
   --enable-multilib         build many library versions (default)
   --enable-target-optspace  optimize for space
   --enable-malloc-debugging indicate malloc debugging requested
@@ -2474,6 +2476,18 @@ else
   lite_exit=no
 fi
 
+# Check whether --enable-newlib_nano_formatted_io was given.
+if test "${enable_newlib_nano_formatted_io+set}" = set; then :
+  enableval=$enable_newlib_nano_formatted_io; case "${enableval}" in
+   yes) newlib_nano_formatted_io=yes ;;
+   no)  newlib_nano_formatted_io=no ;;
+   *) as_fn_error $? "bad value ${enableval} for newlib-nano-formatted-io" "$LINENO" 5 ;;
+ esac
+else
+  newlib_nano_formatted_io=yes
+fi
+
+
 
 # Make sure we can run config.sub.
 $SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
@@ -12409,6 +12423,13 @@ _ACEOF
 
 fi
 
+if test "${newlib_nano_formatted_io}" = "yes"; then
+cat >>confdefs.h <<_ACEOF
+#define _NANO_FORMATTED_IO 1
+_ACEOF
+
+fi
+
 
 if test "x${iconv_encodings}" != "x" \
    || test "x${iconv_to_encodings}" != "x" \