expected primary-expression before "__typeof__" - c++

Question

I am new to c++. I am trying a tiny piece of code to interact with a local instance of InfluxDB.
#include <iostream>
#include <stdio.h>
#include <string.h>
#include <curl/curl.h>
#include <curl/curlver.h>
#include <curl/easy.h>
#include <curl/mprintf.h>
#include <curl/multi.h>
#include <curl/stdcheaders.h>
#include <curl/system.h>
#include <curl/typecheck-gcc.h>
using namespace std;
bool createInfluxDB(char *url, char *data) {
CURL *curl;
curl = curl_easy_init();
if(curl) {
CURLcode res;
/* What Content-type should i use?*/
struct curl_slist* headers = curl_slist_append(headers, "Content-Type: application/json");
/*--data-urlencode*/
char *urlencoded = curl_easy_escape(curl, data, int(strlen(data)));
curl_easy_setopt(curl, CURLOPT_URL, url); // Error here
curl_easy_setopt(curl, CURLOPT_POST, 1L);
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, urlencoded);
curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, (long)strlen(urlencoded));
res = curl_easy_perform(curl);
/*omitted controls*/
curl_free(urlencoded);
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
}
return(true);
}
int main(int argc, char *argv[]){
char *url = "http://localhost:8086/query";
char *data = "q=CREATE DATABASE mydb";
/* should i change data string to json?
data = "{\"q\":\"CREATE DATABASE mydb\" }" */
bool res = createInfluxDB(url, data);
/*control result*/
return(0);
}
When trying to build it, i get the following errors:
expected primary-expression before '__typeof__'
extend list of errors
Any ideas where it might come from ?
I am working on codeblocks 16.01, using GCC compiler on Ubuntu.

Answer 1

That was due to curl library not being linked to the compiler. The correct way to fix this in Codeblocks editor:
Project>Build options..>"Linker settings" tab
Under Link libraries, click on add, type the library name on the popping window, click OK, click OK again. And reboot Codeblocks.