2010-07-23 21:08
mmxcq@mmxcq-laptop:~/c/curl$ gcc -o q q.c /tmp/ccyOh5HP.o: In function `main': q.c:(.text+0x103): undefined reference to `curl_easy_init' q.c:(.text+0x148): undefined reference to `curl_easy_setopt' q.c:(.text+0x16c): undefined reference to `curl_easy_setopt' q.c:(.text+0x190): undefined reference to `curl_easy_setopt' q.c:(.text+0x19c): undefined reference to `curl_easy_perform' q.c:(.text+0x1dc): undefined reference to `curl_easy_cleanup' collect2: ld returned 1 exit status gcc libcurl的时候出现这个 原来是没加curl路径 gcc -l curl -o q q.c 就可以了 将header和body分开存储到文件中 #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <curl/curl.h> static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream) { int written = fwrite(ptr, size, nmemb, (FILE *)stream); return written; } int main(void) { CURL *curl_handle; static const char *headerfilename = "head.out"; FILE *headerfile; static const char *bodyfilename = "body.out"; FILE *bodyfile; curl_global_init(CURL_GLOBAL_ALL); /* init the curl session */ curl_handle = curl_easy_init(); /* set URL to get */ curl_easy_setopt(curl_handle, CURLOPT_URL, "http://www.baidu.com"); /* no progress meter please */ curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L); /* send all data to this function */ curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data); /* open the files */ headerfile = fopen(headerfilename,"w"); if (headerfile == NULL) { curl_easy_cleanup(curl_handle); return -1; } bodyfile = fopen(bodyfilename,"w"); if (bodyfile == NULL) { curl_easy_cleanup(curl_handle); return -1; } /* we want the headers to this file handle */ curl_easy_setopt(curl_handle, CURLOPT_WRITEHEADER, headerfile); curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, bodyfile); /* * Notice here that if you want the actual data sent anywhere else but * stdout, you should consider using the CURLOPT_WRITEDATA option. */ /* get it! */ curl_easy_perform(curl_handle); /* close the header file */ fclose(headerfile); /* close the header file */ fclose(bodyfile); /* cleanup curl stuff */ curl_easy_cleanup(curl_handle); return 0; } |