汇总的"BIGNUM foo"类型不完整，无法定义 [英] Aggregate ‘BIGNUM foo’ has incomplete type and cannot be defined

问题描述

我尝试编译 opendcp ，但是发生了错误.

I tried to compile opendcp, but error occurred.

$ make

...

[ 10%] Building CXX object libasdcp/CMakeFiles/opendcp-asdcp.dir/KM_prng.cpp.o
/home/jwel/opendcp/libasdcp/KM_prng.cpp: In function ‘void Kumu::Gen_FIPS_186_Value(const byte_t*, ui32_t, byte_t*, ui32_t)’:
/home/jwel/opendcp/libasdcp/KM_prng.cpp:219:10: error: aggregate ‘BIGNUM c_2powb’ has incomplete type and cannot be defined
   BIGNUM c_2powb, c_2, c_b;
          ^~~~~~~
/home/jwel/opendcp/libasdcp/KM_prng.cpp:219:19: error: aggregate ‘BIGNUM c_2’ has incomplete type and cannot be defined
   BIGNUM c_2powb, c_2, c_b;
                   ^~~
/home/jwel/opendcp/libasdcp/KM_prng.cpp:219:24: error: aggregate ‘BIGNUM c_b’ has incomplete type and cannot be defined
   BIGNUM c_2powb, c_2, c_b;
                        ^~~
/home/jwel/opendcp/libasdcp/KM_prng.cpp:220:19: error: ‘BN_init’ was not declared in this scope
   BN_init(&c_2powb);  BN_init(&c_2);  BN_init(&c_b);
                   ^
/home/jwel/opendcp/libasdcp/KM_prng.cpp:248:14: error: aggregate ‘BIGNUM bn_tmp’ has incomplete type and cannot be defined
       BIGNUM bn_tmp, bn_xkey, bn_x_n;
              ^~~~~~
/home/jwel/opendcp/libasdcp/KM_prng.cpp:248:22: error: aggregate ‘BIGNUM bn_xkey’ has incomplete type and cannot be defined
       BIGNUM bn_tmp, bn_xkey, bn_x_n;
                      ^~~~~~~
/home/jwel/opendcp/libasdcp/KM_prng.cpp:248:31: error: aggregate ‘BIGNUM bn_x_n’ has incomplete type and cannot be defined
       BIGNUM bn_tmp, bn_xkey, bn_x_n;
                               ^~~~~~
libasdcp/CMakeFiles/opendcp-asdcp.dir/build.make:110: recipe for target 'libasdcp/CMakeFiles/opendcp-asdcp.dir/KM_prng.cpp.o' failed
make[2]: *** [libasdcp/CMakeFiles/opendcp-asdcp.dir/KM_prng.cpp.o] Error 1
make[1]: *** [libasdcp/CMakeFiles/opendcp-asdcp.dir/all] Error 2
make: *** [all] Error 2

对我来说，这似乎是openssl问题，所以我尝试对此进行测试:

It looks like openssl problem for me, so I tried to test this:

$ cat testBIGNUM.cpp
#include <openssl/bn.h>
int main(){
    BIGNUM bn;
}

$ g++ testBIGNUM.cpp
testBIGNUM.cpp: In function ‘int main()’:
testBIGNUM.cpp:4:9: error: aggregate ‘BIGNUM bn’ has incomplete type and cannot be defined
  BIGNUM bn;
         ^~

我的openssl版本是1.1.0d-2，我不知道如何解决.

my openssl version is 1.1.0d-2 and I don't know how to fix it.

推荐答案

OpenSSL 1.0.2和OpenSSL 1.1.0之间有很大的变化，它们并不完全兼容源.具体来说，1.0.2头文件中的许多数据结构现在都是不透明的.使用OpenSSL的应用程序需要进行一些小的更改才能兼容.

There were big changes between OpenSSL 1.0.2 and OpenSSL 1.1.0 and they are not fully source compatible. Specifically many data structures which were in the 1.0.2 header files are now opaque. Applications that use OpenSSL need to make some small changes to be compatible.

对于BIGNUM，您需要这样做:

In the case of BIGNUM, you need to do it like this:

#include <openssl/bn.h>
int main() {
    BIGNUM *bn;

    bn = BN_new();

    ...
    BN_free(bn);

    return 0;
}

对于opendcp，答案可能是降级到OpenSSL 1.0.2.

In the case of opendcp probably the answer is to just downgrade to OpenSSL 1.0.2 instead.

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