Openssl compile error
我使用 openssl 库在 C 代码中包含以下头文件。
|
1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
#include <sys/types.h>
#include <sys/socket.h> #include <netinet/in.h> #include #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <errno.h> #include <string.h> #include <time.h> #ifdef __VMS #include <in.h> #include <inet.h> #else #include <netinet/in.h> #include #endif #include <openssl/crypto.h> #include <openssl/ssl.h> #include <openssl/err.h> |
然后我使用 gcc -o openssl -lssl -lcrypt openssl.c 编译了程序
在我的办公室里，这段代码编译并运行良好，但在我家系统中(办公室里都是 linux-debian 6，家里是 Ubuntu 12.04)，它给出了以下错误：
|
1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 |
/tmp/ccZcmLk4.o: In function `main‘:
server.c:(.text+0x3d): undefined reference to `SSL_library_init’ server.c:(.text+0x42): undefined reference to `SSL_load_error_strings‘ server.c:(.text+0x47): undefined reference to `SSLv3_method’ server.c:(.text+0x57): undefined reference to `SSL_CTX_new‘ server.c:(.text+0x6f): undefined reference to `ERR_print_errors_fp’ server.c:(.text+0x97): undefined reference to `SSL_CTX_use_certificate_file‘ server.c:(.text+0xa8): undefined reference to `ERR_print_errors_fp’ server.c:(.text+0xd0): undefined reference to `SSL_CTX_use_PrivateKey_file‘ server.c:(.text+0xe1): undefined reference to `ERR_print_errors_fp’ server.c:(.text+0xf9): undefined reference to `SSL_CTX_check_private_key‘ server.c:(.text+0x154): undefined reference to `SSL_CTX_load_verify_locations’ server.c:(.text+0x165): undefined reference to `ERR_print_errors_fp‘ server.c:(.text+0x18d): undefined reference to `SSL_CTX_set_verify’ server.c:(.text+0x1a1): undefined reference to `SSL_CTX_set_verify_depth‘ server.c:(.text+0x397): undefined reference to `SSL_new’ server.c:(.text+0x3c2): undefined reference to `SSL_set_fd‘ server.c:(.text+0x3ce): undefined reference to `SSL_accept’ server.c:(.text+0x3e6): undefined reference to `ERR_print_errors_fp‘ server.c:(.text+0x3fe): undefined reference to `SSL_get_current_cipher’ server.c:(.text+0x406): undefined reference to `SSL_CIPHER_get_name‘ server.c:(.text+0x42e): undefined reference to `SSL_get_peer_certificate’ server.c:(.text+0x455): undefined reference to `X509_get_subject_name‘ server.c:(.text+0x46d): undefined reference to `X509_NAME_oneline’ server.c:(.text+0x4b1): undefined reference to `X509_get_issuer_name‘ server.c:(.text+0x4c9): undefined reference to `X509_NAME_oneline’ server.c:(.text+0x50d): undefined reference to `X509_free‘ server.c:(.text+0x593): undefined reference to `SSL_write’ server.c:(.text+0x5ab): undefined reference to `ERR_print_errors_fp‘ server.c:(.text+0x5d3): undefined reference to `SSL_read’ server.c:(.text+0x5eb): undefined reference to `ERR_print_errors_fp‘ collect2: ld returned 1 exit status |
我知道这是因为我的家用电脑中没有某些库。但是谁能告诉我需要为此安装哪些库？提前致谢。
将库放在源文件之后：
|
1
|
gcc –o openssl openssl.c –lssl –lcrypto
|
参见：http://www.network-theory.co.uk/docs/gccintro/gccintro_18.html
- 嗯，这行得通。但它返回了一个我没有在办公室得到的警告。 server.c: In function ‘main’: server.c:55:7: warning: assignment discards ‘const’ qualifier from pointer target type [enabled by default] 恐怕我不得不粘贴整个代码来告诉你问题出在哪里。但它肯定不在办公室。
- @Hari您使用的是不同的编译器版本，是吗？在编译期间调整标志以协调警告或习惯不同的编译器输出。最好在两个位置使用相同的编译器版本。
- 我必须做 -lssl -lcrypto (注意’o’！)以避免神秘的 undefined reference to symbol PEM_read_bio_DHparams
将文件名放在 -l 选项之前
来源：https://www.codenong.com/10994327/
