c++ - curl_easy_getinfo undefined symbol 错误

Question

我使用的是 asterisk 版本 13.5.0。在 utils 目录中，我创建了一个名为 curl_util 的新模块，其源代码如下:

#include "asterisk/curl_utils.h"
HttpResponse * httpResponseNew()
{
    HttpResponse * response = calloc(1, sizeof(HttpResponse));

    return response;
error:
    return NULL;
}

HttpResponse * httpRequestPost(char *url, char *post_body, size_t size)
{
    struct MemoryStruct chunk;
    CURL *curl = curl_easy_init();

    chunk.memory = malloc(1);
    chunk.size = 0;

    HttpResponse *response = httpResponseNew();
    curl_easy_setopt(curl, CURLOPT_URL, url);
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 0);
    curl_easy_setopt(curl, CURLOPT_POST, 1L);
    curl_easy_setopt(curl, CURLOPT_POSTFIELDS, post_body);
    curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, size);
    curl_easy_setopt(curl, CURLOPT_TIMEOUT, 30);
    curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, HttpResponseMemoryWriter);
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);

    response->res = curl_easy_perform(curl);

    if (response->res != CURLE_OK)
    {
        response->OK = 0;
    }
    else
    {
        response->OK = 1;
        response->size = chunk.size;
        response->body = chunk.memory;
    }

    curl_easy_cleanup(curl);

    return response;

error:
    free(chunk.memory);
    if (curl) curl_easy_cleanup(curl);
    return response;
}

在chan_sip.c中，我调用了上面提到的httpRequestPost函数。 执行make和make install就OK了。 但是，当启动 dahdi 和 asterisk 时，出现以下错误:

加载模块 chan_sip.so 时出错: undefined symbol :httpRequestPost

loader.c: 无法加载模块 chan_sip.so。

能否请您提供提示或建议来修复此错误？ 提前谢谢你。

Answer 1

不需要编辑 makefile。您只需要使用 ASTLDFLAGS 编译器选项，例如:

./configure
make ASTLDFLAGS="-lcurl"
make install
make samples
make config