On Tue, 2026-06-23 at 14:08 +0200, Joao Marcos Costa via lists.openembedded.org 
wrote:
> The task's signature should change if CLANG_EXTRA_OE_DISTRO and/or
> CLANG_EXTRA_OE_VENDORS, considering the couple of for loops in
> do_preconfigure iterate over their values.
> 
> By adding them to 'vardeps', bitbake will correctly detect if
> do_preconfigure needs to be executed.
> 
> Signed-off-by: João Marcos Costa <[email protected]>
> ---
>  meta/recipes-devtools/clang/llvm-project-source.inc | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/meta/recipes-devtools/clang/llvm-project-source.inc 
> b/meta/recipes-devtools/clang/llvm-project-source.inc
> index 85b5ef06dc..84d4bae0ab 100644
> --- a/meta/recipes-devtools/clang/llvm-project-source.inc
> +++ b/meta/recipes-devtools/clang/llvm-project-source.inc
> @@ -90,4 +90,5 @@ python do_preconfigure() {
>  
>  do_patch[vardepsexclude] += "MULTILIBS MULTILIB_VARIANTS"
>  addtask do_preconfigure after do_patch
> +do_preconfigure[vardeps] += "CLANG_EXTRA_OE_DISTRO CLANG_EXTRA_OE_VENDORS"
>  do_create_spdx[depends] += "${PN}:do_preconfigure"

We require that tasks can run in isolation and that can happen for many
different reasons. Your fix does improve things a bit but it doesn't
fix the underlying problem.

Ideally we'd change the search/replace expressions so that they always
change/update the required entries. That does sometimes need a bit more
thought about how the expressions work and it means you can't use
replacement tokens (unless as a comment on the line above?).

Another less optimal way to improve things is to change do_preconfigure
into a postfunc for do_unpack, but it wouldn't be able to change things
altered by do_patch. You can't make it a do_patch postfunc as it could
still have the current issues with the changes not being updated.

Cheers,

Richard
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