A package recipe is how we can instruct BitBake to fetch, unpack, compile, and install our application, kernel module, or any software provided by a project. Poky includes several classes that abstract the process for the most common development tools as projects based on Autotools, CMake, and QMake. A list of classes included in Poky can be seen in the following reference manual: http://www.yoctoproject.org/docs/2.4/ref-manual/ref-manual.html.

One simple recipe that executes the compile and install tasks explicitly is provided as follows:

DESCRIPTION = "Simple helloworld application"
SECTION = "examples"
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0b
cf8506ecda2f7b4f302"
SRC_URI = "file://helloworld.c"
S = "${WORKDIR}"
do_compile() {
    ${CC} helloworld.c -o helloworld
}
do_install() {
    install -d ${D}${bindir}
    install -m 0755 helloworld ${D}${bindir}
}

The do_compile and do_install code blocks provide the Shell Scripting...