Compile Error because of deprecated BIGNUM in openssl 1.1.0g

[ghost]

BigNum is deprecated. With openssl 1.1.0 g compiling fails. Openssl versions prior to 1.1.0 f were working well, but now these errors stop the compiler on Linux

bignum.h:51:24: error: invalid use of incomplete type ‘BIGNUM {aka struct bignum_st}’ class CBigNum : public BIGNUM ^~ In file included from /usr/include/openssl/crypto.h:31:0, from allocators.h:12, from crypter.h:7, from keystore.h:8, from script.h:14, from auxpow.cpp:4: /usr/include/openssl/ossl_typ.h:80:16: note: forward declaration of ‘BIGNUM {aka struct bignum_st}’ typedef struct bignum_st BIGNUM; ^~~~~ In file included from script.h:15:0, from auxpow.cpp:4: bignum.h: In constructor ‘CBigNum::CBigNum()’: bignum.h:56:9: error: ‘BN_init’ was not declared in this scope BN_init(this); ^~~ bignum.h:56:9: note: suggested alternative: ‘BN_print’ BN_init(this); ^~~ BN_print bignum.h: In copy constructor ‘CBigNum::CBigNum(const CBigNum&)’: bignum.h:61:9: error: ‘BN_init’ was not declared in this scope BN_init(this); ^~~

[ghost]

I finally have this corrected and running test builds now. Other coins had similar issues with old code and new versions of openssl. The namespace was also problematic. After a few days of working on it, I think I found the last issue and builds are working again. Commit coming soon

[develCuy]

@ctya can you provide links to the patches/commits from those other coins?

[develCuy]

@ctya I looks like this fixes #36, can you confirm?

[develCuy]

@ctya used this for current PR #45: https://github.com/peercoin/peercoin/pull/153/commits/5b09830e5de0f5105534e69dbf4acffb3255869b