Variables

• DEPENDS Lists a recipe's build-time dependencies. These are dependencies on other recipes whose contents (e.g. headers and shared libraries) are needed by the recipe at build time.
• RDEPENDS Lists runtime dependencies of a package. These dependencies are other packages that must be installed in order for the package to function correctly.

• PN - The recipe name
• PR - The recipe revision
• PV - The recipe version

Build related:

• S (by default ${WORKDIR}/${BPN}-${PV}) - directory within build directory, where unpacked recipe source code resides.
• B (by default the same as S) - directory within build directory, where objects are generated.
• D - directory within build directory, where components are installed (destination directory)