Using curl library (nrf/ext/curl)

[mark.blackburn.orpyx]

I would like to use the cURL libary that is included in the nRF Connect SDK (v2.6.1) a nrf/ext/curl

I started with the download sample (nrf/samples/net/download)

I've added this to CMakeLists.txt

# CMakeLists.txt

# ...
target_include_directories(app PRIVATE C:/ncs/v2.6.1/nrf/ext/curl/include/)
# ...

And I've added this to the top of src.main.c:

// src/main.c
// ...
#include <string.h>
#include <stdlib.h>
#include <zephyr/kernel.h>
#include <zephyr/net/socket.h>
#include <zephyr/net/net_if.h>
#include <zephyr/net/conn_mgr_connectivity.h>
#include <net/download_client.h>

#include <curl/curl.h>

// ...

When I build, I get the following error: 

In file included from C:/ncs/v2.6.1/nrf/ext/curl/include/curl/curl.h:38,
                 from C:/Users/MarkBlackburn/Documents/git/nrf9160_samples/curl_test/src/main.c:15:
C:/ncs/v2.6.1/nrf/ext/curl/include/curl/system.h:436:12: fatal error: sys/socket.h: No such file or directory
  436 | # include <sys/socket.h>

How do I get the sys/socket.h file included in the project?

[dejans]

Hi,

Which board do you use?

Can you provide your build command?

Best regards,
Dejan

[mark.blackburn.orpyx]

I'm using nrf9160dk_nrf9160_ns.

Here's the build command VS Code generated:

west build --build-dir c:/Users/MarkBlackburn/Documents/git/nrf9160_samples/curl_test/build_dk c:/Users/MarkBlackburn/Documents/git/nrf9160_samples/curl_test --pristine --board nrf9160dk_nrf9160_ns --no-sysbuild -- -DNCS_TOOLCHAIN_VERSION=NONE -DBOARD_ROOT=c:/users/markblackburn/board-roots;c:/users/markblackburn/documents/git/nrf9160_samples/curl_test

I had earlier renamed the download sample to curl_test

I've updated CMakeLists.txt to add the folder for the sys/socket.h include. Now I'm stuck on link errors as I don't know how to add the .c files for the nrf/ext/curl folder.

target_include_directories(app PRIVATE ${ZEPHYR_BASE}/../nrf/ext/curl/include/)
target_include_directories(app PRIVATE ${ZEPHYR_BASE}/include/zephyr/posix/)

[dejans]

Hi,

You could try out the changes shown below and build for nrf9160dk_nrf9160_ns board target.

CMakeLists.txt

target_sources(app PRIVATE src/main.c)
target_include_directories(app PRIVATE C:/ncs/v2.6.1/nrf/ext/curl/include/)

main.c

#if !defined(CONFIG_NET_SOCKETS_POSIX_NAMES)
#include <zephyr/posix/sys/socket.h>
#else
#include <zephyr/net/socket.h>
#endif

#include <nrf_curl.h>

prj.conf

#
# Copyright (c) 2021 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#

CONFIG_DOWNLOAD_CLIENT=y
CONFIG_DOWNLOAD_CLIENT_STACK_SIZE=4096

# Networking
CONFIG_NETWORKING=y
CONFIG_NET_CONNECTION_MANAGER=y
CONFIG_NET_SOCKETS=y
#CONFIG_NET_SOCKETS_POSIX_NAMES=y
CONFIG_NET_IPV4=y
CONFIG_HEAP_MEM_POOL_SIZE=1024


CONFIG_POSIX_API=y
CONFIG_NEWLIB_LIBC=y
CONFIG_NRF_CURL=y
CONFIG_PTHREAD_IPC=n
CONFIG_NRF_CURL_INTEGRATION=y

Best regards,
Dejan

[mark.blackburn.orpyx]

Thanks, I've got that to build.