Yocto recipe : how to install in specific folder - embedded-linux

Question

I have created a Yocto recipe for my program.
What are the default folders that are building image from recipe ?
At the time of building image, I want to move my files to another folder like "/opt/xyz".
Should I simply do "mv" or is there any other options?

Answer 1

I guess you want to copy your compiled program to a folder such as ${bindir}:
Quote from Yocto ref-manual 1.1:
When specifying paths as part of the CONFFILES variable, it is good practice to use appropriate path variables. For example, ${sysconfdir} rather than /etc or ${bindir} rather than /usr/bin. You can find a list of these variables at the top of the meta/conf/bitbake.conf file in the Source Directory.
You can copy files from your working directory to any directory in the target filesystem. See the hello-world example for instance (note that the example is taken from the 1.1 reference manual, but I haven't found it yet in the newer version):
DESCRIPTION = "Simple helloworld application"
SECTION = "examples"
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
PR = "r0"
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}
}
FILES_${PN} = "${bindir}"
In this example, the helloworld binary would be copied to /usr/bin on your image (could be /opt too, see Source Directory for the variable definition).
Adjust FILES_${PN} var for ${sysconfdir} ${bindir} ${datadir} ${libdir} directories.

Answer 2

do_install(){
install -d ${D}{base_prefix}/opt/xyz/
install -m ${WORKDIR}/yourbinary ${D}${base_prefix}/opt/xyz/
}
FILES_${PN} = "${base_prefix}/opt/*"
above
1st line creates the dir in imagedir in that opt/xvz/
2nd line copy your binary to opt/xyz/dir
3rd line use to copy of your opt/xyz/binary to yocto rootfs.