[kea-dev] configure: error: Linking with -lboost_system is not enough: please make sure libboost_system is installed (was: failed configure KEA git://git.kea.isc.org/kea master)

[Jeremy C. Reed]

On Tue, 29 Sep 2015, tester at isc.org wrote:

> http://git.kea.isc.org/~tester/builder//KEA/20150929104002-CentOS5-x86_64-GCC/logs/configure.out
> 
> http://git.kea.isc.org/~tester/builder//builder.html

checking whether Boost tries to use threads... no
checking Boost offset_ptr compiles... yes
checking Boost numeric_cast compiles with -Werror... yes
checking BOOST_STATIC_ASSERT compiles... yes
checking BOOST_ERROR_CODE_HEADER_ONLY works... no
configure: WARNING: The Boost system library is required.
checking for Boost system library... no
configure: error: Linking with -L/usr/pkg/lib -lboost_system is not 
enough: please make sure libboost_system is installed

Also failed on:
 macmini
 solaris11
 solaris10

What does it mean "is not enough"?  What is this new dependency needed 
on at least four systems?  Where is it documented?