Yocto Recipe / Some runtime variables

Recipe

.bb or .bbappend file
- Recipes describe how to handle a given package
- A recipe is a set of instructions to describe how to retrieve, patch, compile, install and generate binary packages for a given application.
- It also defines what build or runtime dependencies are required.
- The recipes are parsed by the BitBake build engine.
- The format of a recipe file name is <package-name>_<version>.bb
 

Some runtime variables

WORKDIR : The package location that was created after bitbake built the package.

$ bitbake -e vehicle | grep ^WORKDIR=

WORKDIR="/home/yocto/poky/build/tmp/work/arm-linux-gnueabi/vehicle/0.1-r0"

PN : package name(Extract from recipe file name)

PR : package revision

PV : package version

S : The location where bitbake unpacks the package.(where the source is located)

$ bitbake -e hello | grep ^S=

S="/home/yocto/poky/build/tmp/work/arm-linux-gnueabi/vehicle/0.1-r0"

D : Directory to import output files (destination directory)

$ bitbake -e hello | grep ^D=

D="/home/yocto/poky/build/tmp/work/arm-linux-gnueabi/vehicle/0.1-r0/image"

A command to be used after "D" path.

Bindir : /usr/bin

sbindir : /usr/sbin

libdir : /usr/lib

libexecdir : /usr/lib

sysconfdir : /etc

datadir : /usr/share

mandir : /usr/share/man

includedir : /usr/include

#Recipe #Runtime Variables #Yocto #Bitbake #Linux #Build system