Possible to ignore a missing file in recipe without error?

Possible to ignore a missing file in recipe without error?

[Howard]

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Hi:

I have a simple recipe that installs a few miscellaneous files, one of the files may or may not be present and in reality that's ok for the moment, but I don't see a way to do things in a recipe based on the presence or absence of a file.

For example:

LICENSE="CLOSED"

FILESEXTRAPATHS_prepend := "${THISDIR}/files:"

# always present file
SRC_URI += "file://myconfig.config"

# sometimes present file - is there a way to conditionally do this statement
SRC_URI += "file://myOtherConfig.config"

do_install() {
install -d ${D}${sysconfdir}
install -m 0755 ${WORKDIR}/myconfig.config ${D}${sysconfdir}
#same here
install -m 0755 ${WORKDIR}/myOtherConfig.config ${D}${sysconfdir}

}

FILES_${PN} += " ${sysconfdir}/myconfig.config "
#same here
FILES_${PN} += " ${sysconfdir}/myOtherConfig.config "

Many thanks
Howard

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Re: [yocto] Possible to ignore a missing file in recipe without error?

[Josef Holzmayr]

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Howdy!

> On 11. Feb 2022, at 20:03, Howard <howard.egan@avid.com> wrote:
> 
> Hi:
> 
> I have a simple recipe that installs a few miscellaneous files, one of the files may or may not be present and in reality that's ok for the moment, but I don't see a way to do things in a recipe based on the presence or absence of a file.  

The real question is: what is the condition? It must be something that is constant across all of the build. And if can only come from either a .conf file or the environment, otherwise it would not be visible in the recipe.

> 
> For example:
> 
> LICENSE="CLOSED"
> 
> FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
> 
> # always present file
> SRC_URI += "file://myconfig.config"
> 
> # sometimes present file - is there a way to conditionally do this statement
> SRC_URI += "file://myOtherConfig.config"

A possible approach would be only appending depending on a specific DISTRO_FLAG, via bb.utils.contains. I have done something similar at https://github.com/TheYoctoJester/meta-zinc/blob/5c566c2f7d29d9db15db0c70cd3dd79fa755c351/recipes-zinc/libanswer/libanswer_git.bb#L26 <https://github.com/TheYoctoJester/meta-zinc/blob/5c566c2f7d29d9db15db0c70cd3dd79fa755c351/recipes-zinc/libanswer/libanswer_git.bb#L26>

But again, it depends on the exact use case.

Greetz

> 
> do_install() {
>     install -d ${D}${sysconfdir}
>     install -m 0755 ${WORKDIR}/myconfig.config ${D}${sysconfdir}
>     #same here
>     install -m 0755 ${WORKDIR}/myOtherConfig.config ${D}${sysconfdir}
> 
> }
> 
> FILES_${PN} += " ${sysconfdir}/myconfig.config "
> #same here
> FILES_${PN} += " ${sysconfdir}/myOtherConfig.config "
> 
> 
> Many thanks
> Howard
> 
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Re: Possible to ignore a missing file in recipe without error?

[Howard]

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Thanks Josef, that sounds like what I want to do isn't really possible   Or if it is, it isn't worth the effort.

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