Error on compilation of wrappers

make_verbose

abinashmeher999@JARVIS:~/gsoc/symengine/src/ruby/ext/symengine$ make clean
abinashmeher999@JARVIS:~/gsoc/symengine/src/ruby/ext/symengine$ ls
extconf.h  extconf.rb  Makefile  ruby_basic.c  ruby_basic.h  symengine.c
abinashmeher999@JARVIS:~/gsoc/symengine/src/ruby/ext/symengine$ ruby extconf.rb checking for main() in -lsymengine... no
creating extconf.h
creating Makefile
abinashmeher999@JARVIS:~/gsoc/symengine/src/ruby/ext/symengine$ ls
extconf.h   Makefile  ruby_basic.c  symengine.c
extconf.rb  mkmf.log  ruby_basic.h
abinashmeher999@JARVIS:~/gsoc/symengine/src/ruby/ext/symengine$ make VERBOSE=1
compiling ruby_basic.c
ruby_basic.c:8:14: error: ‘cbasic_alloc’ defined but not used [-Werror=unused-function]
 static VALUE cbasic_alloc(VALUE klass){
              ^
ruby_basic.c:19:14: error: ‘cbasic_init’ defined but not used [-Werror=unused-function]
 static VALUE cbasic_init(VALUE self){
              ^
ruby_basic.c:28:14: error: ‘cbasic_add’ defined but not used [-Werror=unused-function]
 static VALUE cbasic_add(VALUE self, VALUE operand2){
              ^
ruby_basic.c:42:14: error: ‘cbasic_sub’ defined but not used [-Werror=unused-function]
 static VALUE cbasic_sub(VALUE self, VALUE operand2){
              ^
ruby_basic.c:56:14: error: ‘cbasic_mul’ defined but not used [-Werror=unused-function]
 static VALUE cbasic_mul(VALUE self, VALUE operand2){
              ^
ruby_basic.c:70:14: error: ‘cbasic_div’ defined but not used [-Werror=unused-function]
 static VALUE cbasic_div(VALUE self, VALUE operand2){
              ^
ruby_basic.c:84:14: error: ‘cbasic_pow’ defined but not used [-Werror=unused-function]
 static VALUE cbasic_pow(VALUE self, VALUE operand2){
              ^
ruby_basic.c:98:14: error: ‘cbasic_neg’ defined but not used [-Werror=unused-function]
 static VALUE cbasic_neg(VALUE self){
              ^
cc1: all warnings being treated as errors
make: *** [ruby_basic.o] Error 1