PSA: Please stop using += as substitute for multiline variables

Hi,

I looked at https://github.com/96boards/meta-rpb/blame/rocko/recipes-overlayed/kselftest... today and noticed a common anti-pattern:

FOO += “bar” FOO += “quix” FOO += “something”

Please stop doing that and use this instead:

FOO = “bar \ quix \ something \ “

In OE += is a heavy operation that really slows down parsing due to the all the expansion and override roundtrips needed, so please stop abusing it as a way to do multiline variables. Thanks!

— Koen Kooi Builds and Baselines | Release Manager Linaro.org | Open source software for ARM SoCs