gcc -std=gnu99  -O3 -pthread  -o minerd minerd-cpu-miner.o minerd-util.o minerd-sha2.o minerd-scrypt.o minerd-keccak.o minerd-groestl.o minerd-blake.o minerd-hefty1.o minerd-heavy.o  minerd-sha2-x64.o minerd-scrypt-x64.o  -L/usr/lib/x86_64-linux-gnu -lcurl compat/jansson/libjansson.a -lpthread  -lssl
/usr/bin/ld: minerd-heavy.o: undefined reference to symbol 'SHA256_Init@@OPENSSL_1.0.0'
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[2]: *** [minerd] Error 1
make[2]: Leaving directory `/root/cpuminer-heavycoin'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/cpuminer-heavycoin'
make: *** [all] Error 2