python - bitbake conditional inclusion of depends statement -


how include depends line in bitbake file condition ? want below:

if (some env varible)   depends += "recipe-1" else   depends += "recipe-2'

i have tried below in .bb file:

depends += "${@ 'recipe-2' if '${env_var}' else 'recipe-1'}"

before exported env_var bb_env_extrawhite

export bb_env_extrawhite="$bb_env_extrawhite env_var"

this working when env_var set:

env env_var="value" bitbake test-recipe

if env_var not set, throwing error while parsing bitbake depends line

expansionerror: failure expanding variable depends, expression ${@ 'recipe-2' if '${env_var}' else 'recipe-1'}   triggered exception syntaxerror: eol while scanning string literal (depends, line 1)

try:

depends += "${@ 'recipe-2' if d.getvar('env_var') else 'recipe-1'}"

the reason why ${env_var} gets expanded value of variable. if unset, doesn't expanded , triggers error see. using getvar result rest of python expression can deal none or value.

note there proposed changes might improve behaviour make bit more usable , understandable people above continue work regardless.


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