Unable to build sparc toolset

[Sambeet Panigrahi]

I am a newbie trying to install the sparc toolset.I followed all the steps
from the documentation in the site

https://docs.rtems.org/rsb

On the terminal in the directory

/development/rtems/src/rtems-source-builder/rtems

I typed

$ ../source-builder/sb-set-builder --prefix=$HOME/development/rtems/4.11
4.11/rtems-sparc to install sparc as mentioned in the documentation but I
get the following error everytime

RTEMS Source Builder - Set Builder, 4.11.0 (47d703fd8c95 modified)
Build Set: 4.11/rtems-sparc
Build Set: 4.11/rtems-autotools.bset
Build Set: 4.11/rtems-autotools-internal.bset
config: tools/rtems-autoconf-2.69-1.cfg
package: autoconf-2.69-x86_64-linux-gnu-1
download: ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz ->
sources/autoconf-2.69.tar.gz

download: ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz: error:
<urlopen error ftp error: [Errno 110] Connection timed out>
error: downloading ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz: all
paths have failed, giving up
Build FAILED
  See error report: rsb-report-autoconf-2.69-x86_64-linux-gnu-1.txt
error: downloading ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz: all
paths have failed, giving up
Build Set: Time 0:02:09.693545
error: downloading ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz: all
paths have failed, giving up
Build Set: Time 0:02:09.695649
error: downloading ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz: all
paths have failed, giving up
Build Set: Time 0:02:09.713884
Build FAILED

I tried to manually download the tools from

ftp://ftp.gnu.org

but even that is not opening in the browser

I have been into problems before because of my institute firewall, is it
happening because of that? Can somebody please help me?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.rtems.org/pipermail/users/attachments/20151207/62f0841e/attachment.html>