The value you provide might replace the value rather than append to the Value, the resulting value might not be what you expect. Particular, when you append a value to a variable that has a default Originally assigned and also on the desired intent of the change. Following are someĬases where you might find you want to modify an existing variable:Ĭustomize a recipe that uses the variable.Ĭhange a variable’s default value used in a *.bbclass file.Ĭhange the variable in a *.bbappend file to override the variableĬhange the variable in a configuration file so that the valueĬhanging a variable value can sometimes depend on how the value was ![]() Sometimes you need to modify existing variables. They do not suppress variable expansions. Unlike in Bourne shells, single quotes work identically to double 3.11.4 Testing and Debugging BitBake Python code.3.11.1 Functions for Accessing Datastore Variables.3.11 Functions You Can Call From Within Python.3.9 Variants - Class Extension Mechanism.3.6.3 Passing Information Into the Build Task Environment.3.5.6 Flexible Inheritance for Class Functions.3.5.4 BitBake-Style Python Functions Versus Python Functions.3.2 Exporting Variables to the Environment.3.1.14 Inline Python Variable Expansion.3.1.12 Override Style Operation Advantages.3.1.10 Appending and Prepending (Override Style Syntax).3.1.9 Appending (.=) and Prepending (=.) Without Spaces.3.1.8 Appending (+=) and prepending (=+) With Spaces. ![]()
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