关于在编译比特币或者qtum中遇到的一点小问题

报错如下

key.cpp: In function ‘bool EnsureLowS(std::vector&)’:
key.cpp:149:19: error: invalid use of incomplete type ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
     if (BN_cmp(sig->s, halforder) > 0) {
                   ^~
In file included from /usr/include/openssl/ecdsa.h:10:0,
                 from key.cpp:17:
/usr/include/openssl/ec.h:1044:16: note: forward declaration of ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
 typedef struct ECDSA_SIG_st ECDSA_SIG;
                ^~~~~~~~~~~~
key.cpp:151:19: error: invalid use of incomplete type ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
         BN_sub(sig->s, order, sig->s);
                   ^~
In file included from /usr/include/openssl/ecdsa.h:10:0,
                 from key.cpp:17:
/usr/include/openssl/ec.h:1044:16: note: forward declaration of ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
 typedef struct ECDSA_SIG_st ECDSA_SIG;
                ^~~~~~~~~~~~
key.cpp:151:34: error: invalid use of incomplete type ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
         BN_sub(sig->s, order, sig->s);
                                  ^~
In file included from /usr/include/openssl/ecdsa.h:10:0,
                 from key.cpp:17:
/usr/include/openssl/ec.h:1044:16: note: forward declaration of ‘ECDSA_SIG {aka struct ECDSA_SIG_st}’
 typedef struct ECDSA_SIG_st ECDSA_SIG;
                ^~~~~~~~~~~~

google了很久知道时openssl的问题但就是没有解决方案2333

但其主要是openssl不兼容的问题，我装的1.0.2版本,重新装回1.0.0版本就行了。。。。就是libopenssl1.0.0-dev

编译成功2333