在 Ubuntu 中使用 OpenSSL 的链接问题

Linking issues using OpenSSL in Ubuntu

本文关键字：链接 问题 OpenSSL Ubuntu      更新时间：2023-10-16

我已经使用sudo apt-get install openssl-dev安装了OpenSSL。当我尝试使用 Netbeans 编译它时，它会给出以下错误。如何解决此问题？

g++     -lssl -o dist/Debug/GNU-Linux-x86/cppapplication_2 build/Debug/GNU-Linux-x86/main.o -L/home/sercan/Desktop/openssl-0.9.8h-1-lib/lib
build/Debug/GNU-Linux-x86/main.o: In function `main':
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:46: undefined reference to `OPENSSL_add_all_algorithms_noconf'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:48: undefined reference to `ERR_load_crypto_strings'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:58: undefined reference to `d2i_PKCS12_fp'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:66: undefined reference to `ERR_print_errors_fp'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:72: undefined reference to `PKCS12_parse'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:76: undefined reference to `ERR_print_errors_fp'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:82: undefined reference to `PKCS12_free'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:96: undefined reference to `PEM_write_PrivateKey'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:104: undefined reference to `PEM_write_X509_AUX'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:108: undefined reference to `sk_num'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:114: undefined reference to `sk_value'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:114: undefined reference to `PEM_write_X509_AUX'
/home/sercan/NetBeansProjects/CppApplication_2/main.cpp:112: undefined reference to `sk_num'

我的代码在这里：

#include <stdio.h>
#include <stdlib.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/pkcs12.h>
/* Simple PKCS#12 file reader */
int main(int argc, char **argv)
{
    FILE *fp;
    EVP_PKEY *pkey;
    X509 *cert;
    STACK_OF(X509) *ca = NULL;
    PKCS12 *p12;
    int i;
    if (argc != 4) {
        fprintf(stderr, "Usage: pkread p12file password opfilen");
        exit(1);
    }
    OpenSSL_add_all_algorithms();
    ERR_load_crypto_strings();
    if (!(fp = fopen(argv[1], "rb"))) {
        fprintf(stderr, "Error opening file %sn", argv[1]);
        exit(1);
    }
    p12 = d2i_PKCS12_fp(fp, NULL);
    fclose(fp);
    if (!p12) {
        fprintf(stderr, "Error reading PKCS#12 filen");
        ERR_print_errors_fp(stderr);
        exit(1);
    }
    if (!PKCS12_parse(p12, argv[2], &pkey, &cert, &ca)) {
        fprintf(stderr, "Error parsing PKCS#12 filen");
        ERR_print_errors_fp(stderr);
        exit(1);
    }
    PKCS12_free(p12);
    if (!(fp = fopen(argv[3], "w"))) {
        fprintf(stderr, "Error opening file %sn", argv[1]);
        exit(1);
    }
    if (pkey) {
        fprintf(fp, "***Private Key***n");
        PEM_write_PrivateKey(fp, pkey, NULL, NULL, 0, NULL, NULL);
    }
    if (cert) {
        fprintf(fp, "***User Certificate***n");
        PEM_write_X509_AUX(fp, cert);
    }
    if (ca && sk_X509_num(ca)) {
        fprintf(fp, "***Other Certificates***n");
        for (i = 0; i < sk_X509_num(ca); i++)
            PEM_write_X509_AUX(fp, sk_X509_value(ca, i));
    }
    fclose(fp);
    return 0;
}

您还需要链接到libcrypto-将-lcrypto添加到链接行中，您的代码应该正确链接。

natsu:~/openssl% gcc -o test test.c -L/usr/lib -lssl -lcrypto

链接正确，同时：

natsu:~/openssl% gcc -o test test.c -L/usr/lib -lssl         
/tmp/ccvA7iNe.o: In function `main':
test.c:(.text+0x4c): undefined reference to `OPENSSL_add_all_algorithms_noconf'
test.c:(.text+0x51): undefined reference to `ERR_load_crypto_strings'
test.c:(.text+0xb9): undefined reference to `d2i_PKCS12_fp'
test.c:(.text+0x103): undefined reference to `ERR_print_errors_fp'
test.c:(.text+0x133): undefined reference to `PKCS12_parse'
test.c:(.text+0x16a): undefined reference to `ERR_print_errors_fp'
test.c:(.text+0x180): undefined reference to `PKCS12_free'
test.c:(.text+0x22c): undefined reference to `PEM_write_PrivateKey'
test.c:(.text+0x266): undefined reference to `PEM_write_X509_AUX'
test.c:(.text+0x27b): undefined reference to `sk_num'
test.c:(.text+0x2b7): undefined reference to `sk_value'
test.c:(.text+0x2c9): undefined reference to `PEM_write_X509_AUX'
test.c:(.text+0x2d9): undefined reference to `sk_num'
collect2: ld returned 1 exit status

不。

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