[OE-core] How do we get programs into sysroots?

[Joel A Fernandes]

I have added a recipe for mkcard script to oe-core/meta/meta-devtools
as follows:

DESCRIPTION = "A tool to format SD Cards correctly"
LICENSE = "GPLv2"
LIC_FILES_CHKSUM = "file://COPYING;md5=393a5ca445f6965873eca0259a17f833"
SECTION = "base"
SRC_URI = "file://mkcard.txt \
           file://COPYING.patch"
PR = "r3"

do_configure() {
        install -m 0644 ${WORKDIR}/mkcard.txt ${S}/
}

do_install() {
        install -d ${D}${base_sbindir}
        install -m 0755 ${S}/mkcard.txt ${D}${base_sbindir}/mkcard
}

BBCLASSEXTEND = "native"
---

Everything works fine, but I don't see 'mkcard' in /sbin in sysroots
directory. I'd like to install it there. I tried looking at other
scripts to see the right way to do it but I'm not sure of a clean way
to do so. I looked at the staging.bbclass and it seems to only pickup
libs and headers.

Appreciate any help or pointers to posts/documentation

Thanks,
Joel