RE: [yocto] Bitbake + Patches

[Peter Kjellerstedt <peter.kjellerstedt@axis.com>]

> -----Original Message-----
> From: forums <forums@bitflipper.net>
> Sent: den 23 augusti 2022 22:34
> To: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
> Subject: Re: [yocto] Bitbake + Patches
>  
> Thanks Peter. I will look into this. But isn’t this bbappend considered a
> patch as well or will replace Apache 2.4.41 with the latest version of
> apache?

Well, it depends on how strict your terminology is. To me, a patch is a 
file, typically generated by `diff` or `git format-patch`. But of course, 
adding the bbappend suggested below will modify the recipe so that it 
builds the latest version of Apache.

> I am relatively new to yocto so there’s a lot I need to learn.
> 
> Jim
> 
> On Aug 23, 2022, at 7:41 AM, Peter Kjellerstedt <peter.kjellerstedt@axis.com> wrote:
> >
> >> -----Original Message-----
> >> From: yocto@lists.yoctoproject.org <yocto@lists.yoctoproject.org> On Behalf Of Khem Raj
> >> Sent: den 23 augusti 2022 00:29
> >> To: bitflipper <forums@bitflipper.net>
> >> Cc: yocto@lists.yoctoproject.org
> >> Subject: Re: [yocto] Bitbake + Patches
> >>
> >> On Mon, Aug 22, 2022 at 1:54 PM bitflipper <forums@bitflipper.net> wrote:
> >>>
> >>> I was told this was the right group to ask my question. If this is 
> >>> not right, please let me know.
> >>>
> >>> I am currently using  Zeus, and with Zeus, we get Apache v2.4.41. 
> >>> But I would like to get a later version of apache because there 
> >>> have been a few fixes related to cyber security. So I believe that, 
> >>> given we’re using Zeus, we can’t upgrade to the latest version of 
> >>> Apache given the current recipe that Zeus uses. Therefore I believe 
> >>> that the only way accomplish getting tho the latest version of 
> >>> apache with Zeus would to be ‘patch’ the v2.4.41 version that comes 
> >>> with Zeus.
> >>>
> >>> Looking at the Bitbake manual, in section 4.1, it states the
> >>> following:
> >>>
> >>> "BitBake takes several steps when fetching source code or files. 
> >>> The fetcher codebase deals with two distinct processes in order: 
> >>> obtaining the files from somewhere (cached or otherwise) and then 
> >>> unpacking those files into a specific location and perhaps in a 
> >>> specific way. Getting and unpacking the files is often optionally 
> >>> followed by patching. Patching, however, is not covered by this 
> >>> module."
> >>>
> >>> The manual does not cover patching.
> >>>
> >>> Where can I get information on this process of patching something like
> >>> apache or any other application that was add via IMAGE_INSTALL_append
> >>> method.
> >>>
> >>> Any help pointing me to where this process might be documented is much
> >>> appreciated.
> >>>
> >>
> >> look into mega manual something like this would help
> >> https://docs.yoctoproject.org/dev-manual/common-tasks.html?highlight=writing+recipe#patching-code
> >>
> >>> Thanks, Jim
> >
> > You don't really need to go patching apache just to update it. What you
> > need is to add a bbappend file in one of your own layers. Call it
> > recipes-httpd/apache2/apache2_2.4.41.bbappend and make it contain:
> >
> > FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
> >
> > LIC_FILES_CHKSUM = "file://LICENSE;md5=bddeddfac80b2c9a882241d008bb41c3"
> >
> > PV = "2.4.54"
> >
> > SRC_URI += "file://0008-Fix-perl-install-directory-to-usr-bin.patch \
> >            file://0009-support-apxs.in-force-destdir-to-be-empty-string.patch \
> >            file://0001-make_exports.awk-not-expose-the-path.patch"
> > SRC_URI_remove = "file://apache-configure_perlbin.patch"
> >
> > SRC_URI[md5sum] = "<I don't have this at hand, but bitbake will tell you what it should be>"
> > SRC_URI[sha256sum] = "eb397feeefccaf254f8d45de3768d9d68e8e73851c49afd5b7176d1ecf80c340"
> >
> > You then also need to copy the three new patches and any other
> > patches that differs between zeus and master and put them in your
> > layer together with the bbappend file (in a subdirectory called
> > "recipes-httpd/apache2/apache2").
> >
> > The suggested contents of the bbappend above is based on the
> > differences between the apache2 recipe in zeus and master.
> >
> > //Peter

//Peter