Error building efte with clang

[slacka]

When building efte with clang, I get

s_string.cpp:74:5: error: 'strcasecmp' is missing exception specification 'throw()'

The full log of the same error can be found here:
http://clang.debian.net/logs/2016-08-30/efte_1.1-2_unstable_clang.log