每次在Ubuntu上用gcc编译代码时,我都会遇到一个错误。
我通过键入以下命令安装了libssh dev:
sudo apt-get install libssh-dev
它安装得很好(没有错误信息)
我要编译的代码是:
#include <stdlib.h>
#include <stdio.h>
#define LIBSSH_STATIC 1
#include <libssh/libssh.h>
int main(void){
int rc;
int port = 21;
char *pass = "password";
ssh_session my_ssh_session = ssh_new();
if(my_ssh_session == NULL){
exit(-1);
}
ssh_options_set(my_ssh_session, SSH_OPTIONS_HOST, "localhost");
ssh_options_set(my_ssh_session, SSH_OPTIONS_PORT, &port);
ssh_options_set(my_ssh_session, SSH_OPTIONS_USER, "username");
rc = ssh_connect(my_ssh_session);
if(rc != SSH_OK){
fprintf(stderr, "Error connecting to localhost: %s\n", ssh_get_error(my_ssh_session) );
exit(-1);
}
ssh_userauth_password(my_ssh_session, NULL, pass);
ssh_disconnect(my_ssh_session);
ssh_free(my_ssh_session);
}
当我试图编译代码时,错误消息显示:
user@neodym:~/Desktop/projects/ssh$ gcc -lssh ssh_client.c
/tmp/ccGihId0.o: In function `main':
ssh_client.c:(.text+0x2a): undefined reference to `ssh_new'
ssh_client.c:(.text+0x57): undefined reference to `ssh_options_set'
ssh_client.c:(.text+0x6c): undefined reference to `ssh_options_set'
ssh_client.c:(.text+0x84): undefined reference to `ssh_options_set'
ssh_client.c:(.text+0x90): undefined reference to `ssh_connect'
ssh_client.c:(.text+0xa5): undefined reference to `ssh_get_error'
ssh_client.c:(.text+0xe2): undefined reference to `ssh_userauth_password'
ssh_client.c:(.text+0xee): undefined reference to `ssh_disconnect'
ssh_client.c:(.text+0xfa): undefined reference to `ssh_free'
collect2: error: ld returned 1 exit status
我都准备好了谷歌搜索,但到目前为止什么都没用。
libssh头文件安装在/usr/include/libssh/so gcc应该能够找到这些文件。
你能帮我修一下吗?
最佳答案
尝试编译时使用:
gcc -c ssh_client.c
然后通过以下链接到库:
gcc -o ssh_client ssh_client.o -lssh
或者一步到位:
gcc -o ssh_client ssh_client.c -lssh
关于c - 如何在C中正确包含libssh,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/54265917/