Avoid duplicating include files.
Use append files (.bbappend
)
for each recipe
that uses an include file.
Or, if you are introducing a new recipe that requires
the included file, use the path relative to the original
layer directory to refer to the file.
For example, use
require recipes-core/somepackage/somefile.inc
instead of require somefile.inc
.
If you're finding you have to overlay the include file,
it could indicate a deficiency in the include file in
the layer to which it originally belongs.
If this is the case, you need to address that deficiency
instead of overlaying the include file.
For example, consider how support plug-ins for the Qt 4
database are configured.
The Source Directory does not have MySQL or PostgreSQL.
However, OpenEmbedded's layer meta-oe
does.
Consequently, meta-oe
uses
append files to modify the
QT_SQL_DRIVER_FLAGS
variable to
enable the appropriate plug-ins.
This variable was added to the qt4.inc
include file in the Source Directory specifically to allow
the meta-oe
layer to be able to control
which plug-ins are built.