Resuming downloads of external files

Hi all, 

I notice we use curl to download things like boost. 

Unfortunately for myself, I’m having connectivity issues to the LibreOffice servers. Whenever the 
download fails, the next time I run make it restarts from the beginning, and of course it fails. 

Would it be possible to use the -C (continue) command?

cd /Users/5K/lo/core/external/tarballs/tmp && echo fetching boost_1_59_0.tar.bz2 && bash -c 
'/usr/bin/curl -C - -O http://dev-www.libreoffice.org/src/boost_1_59_0.tar.bz2 2>&1 | tee -a 
/Users/5K/lo/core/external/tarballs/fetch.log && [ $PIPESTATUS -eq 0 ]' && SUM=`md5 -r 
boost_1_59_0.tar.bz2 | sed "s/ .*//"` && if test "$SUM" != "6aa9a5c6a4ca1016edd0ed1178e3cb87"; then 
echo ERROR: expected checksum for boost_1_59_0.tar.bz2 is 6aa9a5c6a4ca1016edd0ed1178e3cb87 2>&1 | 
tee -a /Users/5K/lo/core/external/tarballs/fetch.log; false; fi && mv boost_1_59_0.tar.bz2 ../ 

We’d just have to add in the "-C -“ switches to Curl. 

Are there any concerns in making this occur?

Chris