来自不同 OpenSSL 版本的冲突 headers

Conflict headers from different OpenSSL version

我正在尝试从源代码在 Ubuntu 14.04 上安装 OpenSSL 1.0.2k。我已经有 1.0.1f 版本了。在 ./config I 运行 make 之后得到下一条消息:

cryptlib.c:1019:5: error: conflicting types for 'CRYPTO_memcmp'
int CRYPTO_memcmp(const volatile void *in_a, const volatile void *in_b, size_t len)
 ^
In file included from cryptlib.h:72:0,
             from cryptlib.c:117:
/usr/include/openssl/crypto.h:582:5: note: previous declaration of 'CRYPTO_memcmp' was here
int CRYPTO_memcmp(const void *a, const void *b, size_t len);

生成报告 显示:

#include uses headers from different OpenSSL version!

如何为编译器设置正确的headers?我的路径是:

usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

对我来说,通过将包从 PPA 更新到 OpenSSL-1.0.2g 解决了问题:

sudo add-apt-repository ppa:0k53d-karl-f830m/openssl 
sudo apt-get update 
sudo apt-get install openssl