我使用此处的说明安装了 MongoDB C 驱动程序（在“从发布 tarball 构建”部分下：http ://api.mongodb.com/c/current/installing.html#installing-unix ，并且得到了以下信息尝试编译 MongoDB 的示例代码时出错：
nicholas@nicholas-CQ5715F:~$ gcc -o connect connect.c $(pkg-config --cflags --libs libmongoc-1.3.5) 在 pkg-config 搜索路径中找不到软件包 libmongoc-1.3.5。也许您应该将包含 `libmongoc-1.3.5.pc' 的目录添加到 PKG_CONFIG_PATH 环境变量 No package 'libmongoc-1.3.5' found connect.c:1:18: fatal error: bson.h: No such file 或目录#include ^ 编译终止。
这是代码：
#include <bson.h>
#include <bcon.h>
#include <mongoc.h>
int
main (int argc,
char *argv[])
{
mongoc_client_t *client;
mongoc_database_t *database;
mongoc_collection_t *collection;
bson_t *command,
reply,
*insert;
bson_error_t error;
char *str;
bool retval;
/*
* Required to initialize libmongoc's internals
*/
mongoc_init ();
/*
* Create a new client instance
*/
client = mongoc_client_new ("mongodb://localhost:27017");
/*
* 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 (collection, MONGOC_INSERT_NONE, insert, 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_client_destroy (client);
mongoc_cleanup ();
return 0;
}