The error message is: /bin/sh ../libtool --mode=compile g++ -g -O2 -I../include -I../include -I./base -Ibase -c ./base/random/cl_random_from.cc g++ -g -O2 -I../include -I../include -I./base -Ibase -c ./base/random/cl_random_from.cc -DDLL_EXPORT -DPIC -o .libs/cl_random_from.o ./base/random/cl_random_from.cc: In constructor `cln::random_state::random_state()': ./base/random/cl_random_from.cc:68: error: `::get_seed' has not been declared make[3]: *** [cl_random_from.lo] Error 1 make[3]: Leaving directory `/f/dev-cpp/work/cln/src' make[2]: *** [base/random.target] Error 2 make[2]: Leaving directory `/f/dev-cpp/work/cln/src' make[1]: *** [base.target] Error 2 make[1]: Leaving directory `/f/dev-cpp/work/cln/src' make: *** [all] Error 2 It's seems lost something in "cl_random_from.cc"!?