摘要：
1.准备安装ssl库：sudoapt getinstallopensslsudoapt getinstalllibssl-dev2.下载libcurl源代码：wgethttps://curl.haxx.se/download/curl-7.65.3.tar.xz3.解压缩并输入源代码目录：tarxfcurl-7.65.3.tar。xzcdcurl-7.65.34.配置编译选项：./config
1.准备工作，安装ssl库：
sudo apt-get installopenssl sudo apt-get install libssl-dev
2.下载libcurl源代码：
wget https://curl.haxx.se/download/curl-7.65.3.tar.xz
3.解压并进入源代码目录：
tar xf curl-7.65.3.tar.xz cd curl-7.65.3
4.配置编译选项：
./configure --prefix=/usr
--disable-static
--enable-threaded-resolver
--with-ca-path=/etc/ssl/certs
5.编译：
make
6.安装（需要root权限）：
make install && rm -rf docs/examples/.deps && find docs ( -name Makefile* -o -name *.1 -o -name *.3 ) -exec rm {} ; && install -v -d -m755 /usr/share/doc/curl-7.65.3 && cp -v -R docs/*/usr/share/doc/curl-7.65.3
至此，编译安装完成。
写代码测试一下：
#include <stdio.h> #include <curl/curl.h> int main(void) { CURL *curl; CURLcode res; curl_global_init(CURL_GLOBAL_DEFAULT); curl =curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://www.baidu.com/"); /*Perform the request, res will get the return code */ res =curl_easy_perform(curl); /*Check for errors */ if(res !=CURLE_OK) fprintf(stderr, "curl_easy_perform() failed: %s ", curl_easy_strerror(res)); /*always cleanup */ curl_easy_cleanup(curl); } curl_global_cleanup(); return 0; }
编译：
gcc hello_https.c -l curl -o hello_https运行：
./hello_https
运行结果截图：
附 自定义回调处理响应数据代码：
#include <stdio.h> #include <curl/curl.h> static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream) { if(stream ==NULL) return 0; printf("%s", ptr); return size *nmemb; } int main(void) { CURL *curl; CURLcode res; curl_global_init(CURL_GLOBAL_DEFAULT); curl =curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://www.baidu.com/"); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data); /*Perform the request, res will get the return code */ res =curl_easy_perform(curl); /*Check for errors */ if(res !=CURLE_OK) fprintf(stderr, "curl_easy_perform() failed: %s ", curl_easy_strerror(res)); /*always cleanup */ curl_easy_cleanup(curl); } curl_global_cleanup(); return 0; }