[linux-yocto] Append vs Expand

Ran Shalit ranshalit at gmail.com
Thu Feb 23 10:52:47 PST 2017

I am tring to understand the basic of the language.
Does anyone knows what is the difference between "=" to "+="

I read in free-electrons tutorial:
= expand the value when using the variable
+= append (with space)
My english is not perfect, so I don't understand the diffrerence
between expand and append.
for example
IMAGE_INSTALL = "dropbear" means that it is added to other packages ?


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