How to add recipe in yocto to build curl example? - yocto

Question

I can build the test.c without using yocto in my terminal easily. So this means
there is no problem with the test.c or the libcurl in my host machine.
However, when I build using yocto it complains that it cannot find curl/curl.h.
DEBUG: Executing shell function do_compile
| test.c:5:10: fatal error: curl/curl.h: No such file or directory
| #include <curl/curl.h>
| ^~~~~~~~~~~~~
| compilation terminated.
| WARNING: exit code 1 from a shell command.
Here is my directory structure which contains my example based out of libcurl.
├── curlTest
│   ├── curlTest
│   │   ├── README.txt
│   │   └── test.c
│   └── curlTest.bb
Here is my curlTest.bb
curlTest.bb
SUMMARY = "Simple Hello World Application"
DESCRIPTION = "A test application to demonstrate how to create a recipe \
by directly compiling C files with BitBake."
SECTION = "examples"
PRIORITY = "optional"
LICENSE = "MIT"
LIC_FILES_CHKSUM = "\
file://README.txt;md5=321180101a13e8916e6753497a4f9c82"
SRC_URI = "file://test.c \
file://README.txt"
S = "${WORKDIR}"
do_compile() {
${CC} ${CFLAGS} ${LDFLAGS} -o testCurl test.c -lcurl
}
do_install() {
install -d ${D}${bindir}
install -m 0755 hello ${D}${bindir}
}
Here is the example of libcurl based out of the libcurl website.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <curl/curl.h>
struct MemoryStruct {
char *memory;
size_t size;
};
static size_t
WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
size_t realsize = size * nmemb;
struct MemoryStruct *mem = (struct MemoryStruct *)userp;
char *ptr = realloc(mem->memory, mem->size + realsize + 1);
if(ptr == NULL) {
/* out of memory! */
printf("not enough memory (realloc returned NULL)\n");
return 0;
}
mem->memory = ptr;
memcpy(&(mem->memory[mem->size]), contents, realsize);
mem->size += realsize;
mem->memory[mem->size] = 0;
return realsize;
}
int main(void)
{
CURL *curl_handle;
CURLcode res;
struct MemoryStruct chunk;
chunk.memory = malloc(1); /* will be grown as needed by the realloc above */
chunk.size = 0; /* no data at this point */
curl_global_init(CURL_GLOBAL_ALL);
/* init the curl session */
curl_handle = curl_easy_init();
/* specify URL to get */
curl_easy_setopt(curl_handle, CURLOPT_URL, "https://www.example.com/");
/* send all data to this function */
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
/* we pass our 'chunk' struct to the callback function */
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
/* some servers don't like requests that are made without a user-agent
field, so we provide one */
curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
/* get it! */
res = curl_easy_perform(curl_handle);
/* check for errors */
if(res != CURLE_OK) {
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(res));
}
else {
/*
* Now, our chunk.memory points to a memory block that is chunk.size
* bytes big and contains the remote file.
*
* Do something nice with it!
*/
printf("%lu bytes retrieved\n", (unsigned long)chunk.size);
}
/* cleanup curl stuff */
curl_easy_cleanup(curl_handle);
free(chunk.memory);
/* we're done with libcurl, so clean it up */
curl_global_cleanup();
return 0;
}