wget --no-check-certificate -c https://github.com/json-c/json-c/archive/json-c-0.12-20140410.tar.gz
tar -xzf json-c-0.12-20140410.tar.gz
cd json-c-json-c-0.12-20140410
mkdir -p build
cd build
../configure --prefix="/usr" CFLAGS="-Wno-error"
make # can't handle -j#
make install