Can't find mongoc.h - mongodb

Question

I can't find mongoc.h after installing Mongodb and C driver on Ubuntu 16.04.
sudo apt-get install mongodb
sudo apt-get install libmongoc-1.0-0
sudo apt-get install libbson-1.0
This is the error I get:
gcc -o mtest mtest.c -I/usr/local/include/libbson-1.0 -I/usr/local/include/libmongoc-1.0 -lmongoc-1.0 -lbson-1.0
mtest.c:1:20: fatal error: mongoc.h: No such file or directory
compilation terminated.
I checked the disk and can not find the file. Tips appreciated.

Answer 1

If you have installed via apt-get, then the packages almost certainly don't install to /usr/local, but to plain old /usr. What happens if you run
gcc -o mtest mtest.c -I/usr/include/libbson-1.0 -I/usr/include/libmongoc-1.0 -lmongoc-1.0 -lbson-1.0
P.S. The right way to pick up these paths is by using pkg-config instead of hard coding them, please see http://mongoc.org/libmongoc/current/tutorial.html#pkg-config

Answer 2

I faced the same problem, then instead installing the packages for the libraries I followed the steps below (for Ubuntu), according with this link for libmongoc :
1 - Check if you have cmake installed, if not:
$ sudo apt-get install cmake
2 - to download, build sources and install libraries:
$ wget https://github.com/mongodb/mongo-c-driver/releases/download/1.14.0/mongo-c-driver-1.14.0.tar.gz
$ tar xzf mongo-c-driver-1.14.0.tar.gz
$ cd mongo-c-driver-1.14.0
$ mkdir cmake-build
$ cd cmake-build
$ cmake -DENABLE_AUTOMATIC_INIT_AND_CLEANUP=OFF ..
3 - to Test, edit a file and save as hello_mongo.c:
#include <mongoc/mongoc.h>
int main (int argc, char *argv[])
{
const char *uri_string = "mongodb://localhost:27017";
mongoc_uri_t *uri;
mongoc_client_t *client;
mongoc_database_t *database;
mongoc_collection_t *collection;
enter code here`bson_t *command, reply, *insert;
bson_error_t error;
char *str;
bool retval;
/*
* Required to initialize libmongoc's internals
*/
mongoc_init ();
/*
* Optionally get MongoDB URI from command line
*/
if (argc > 1) {
uri_string = argv[1];
}
/*
* Safely create a MongoDB URI object from the given string
*/
uri = mongoc_uri_new_with_error (uri_string, &error);
if (!uri) {
fprintf (stderr,
"failed to parse URI: %s\n"
"error message: %s\n",
uri_string,
error.message);
return EXIT_FAILURE;
}
/*
* Create a new client instance
*/
client = mongoc_client_new_from_uri (uri);
if (!client) {
return EXIT_FAILURE;
}
/*
* Register the application name so we can track it in the profile logs
* on the server. This can also be done from the URI (see other examples).
*/
mongoc_client_set_appname (client, "connect-example");
/*
* Get a handle on the database "db_name" and collection "coll_name"
*/
database = mongoc_client_get_database (client, "db_name");
collection = mongoc_client_get_collection (client, "db_name", "coll_name");
/*
* Do work. This example pings the database, prints the result as JSON and
* performs an insert
*/
command = BCON_NEW ("ping", BCON_INT32 (1));
retval = mongoc_client_command_simple (
client, "admin", command, NULL, &reply, &error);
if (!retval) {
fprintf (stderr, "%s\n", error.message);
return EXIT_FAILURE;
}
str = bson_as_json (&reply, NULL);
printf ("%s\n", str);
insert = BCON_NEW ("hello", BCON_UTF8 ("world"));
if (!mongoc_collection_insert_one (collection, insert, NULL, NULL, &error)) {
fprintf (stderr, "%s\n", error.message);
}
bson_destroy (insert);
bson_destroy (&reply);
bson_destroy (command);
bson_free (str);
/*
* Release our handles and clean up libmongoc
*/
mongoc_collection_destroy (collection);
mongoc_database_destroy (database);
mongoc_uri_destroy (uri);
mongoc_client_destroy (client);
mongoc_cleanup ();
return EXIT_SUCCESS;
}
4 - to compile and run the C program:
$ gcc -o hello_mongoc hello_mongoc.c -I/usr/local/include/libbson-1.0
-/usr/local/include/libmongoc-1.0 -lmongoc-1.0 -lbson-1.0
$ ./hello_mongoc
If you're working with the raspberrypi 3, you're problaby using mongodb 2.4.14 and then libraries libbson and libmongoc must be version 1.7.0.. look these: libmongoc and libbson.