[yocto] Literal curly braces inside python expression

[Viguera, Javier]

Hi all,

I'm having a hard time trying to put some literal curly braces in a python expression and I need a bit of help to solve this problem.

I minimal example to reproduce this. If in my recipe i have:

VAR1 = "1"
VAR2 = "${@base_conditional('VAR1', '1', '{ONE}', '{TWO}', d)}"

do_install() {
      echo "${VAR2}"
}

Getting the recipe environment I get:

# bitbake -e myrecipe | less

do_install() {
      ...
      echo "${@base_conditional('VAR1', '1', '{ONE}', '{TWO}', d)}"
      ...
}

So bitbake is not resolving the python expression.

If on the other hand I remove the curly braces:

VAR1 = "1"
VAR2 = "${@base_conditional('VAR1', '1', 'ONE', 'TWO', d)}"

then bitbake solves the expression correctly:

# bitbake -e myrecipe | less

do_install() {
      ...
      echo "ONE"
      ...
}

But I do need to put those curly braces. Is there a way?

Thanks in advance.

--
Javier Viguera


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