Protocol "smtps" is not supported (or) Disabled in libcurl

Im using mangOH Red board (Wp7608) in this I’m trying to send mail(Gmail) by using curl commands with the help of SMTPS protocol but im getting an Error like this i.e Curl:(1) protocol “smtps” is not supported (or) disabled in libcurl.

Im using this version of curl(Details)
curl 7.58.0 (arm-poky-linux-gnueabi) libcurl/7.58.0 OpenSSL/1.0.2n zlib/1.2.11
Release-Date: 2018-01-24
Protocols: file ftp ftps http https
Features: AsynchDNS IPv6 Largefile NTLM NTLM_WB SSL libz TLS-SRP UnixSockets HTTPS-proxy

In the above version i don’t know how to enable the SMTPS protocol? can you please help me to do this?

Thanks and Regard
Likhith

you can download the yocto source code and then in ./yocto/poky/meta/recipes-support/curl/, replace with my curl_7.61.0.bb.

curl_7.61.0.bb (3.2 KB)

After rebuild the yocto image, you will see the following:

root@swi-mdm9x28-wp:~# curl --version
curl 7.61.0 (arm-poky-linux-gnueabi) libcurl/7.61.0 OpenSSL/1.0.2p zlib/1.2.11 libssh2/1.8.0
Release-Date: 2018-07-11
Protocols: file ftp ftps http https scp sftp smtp smtps
Features: AsynchDNS IPv6 Largefile NTLM NTLM_WB SSL libz TLS-SRP UnixSockets HTTPS-proxy

I dont know where to put the source code, how to download the yocto source code for mangOH board?
in our curl (7.61.0) is already pre installed).

Please download here:
https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-13,-d-,1-components/#sthash.xop4kkpH.dpbs

mangoh@mangoh-vm:~/Downloads$ swiflash -f -m wp76xx -i WP76xx_Release13.1_GENERIC_GCF.spk
Detecting USB of the target
No device connected
I try to firmware upgrade i got NO device connected.how to solve this problem

you can use the windows EXE one click.