[gentoo-user] Automatic picking up the patches from /etc/portage/patches

[gentoo-user] Automatic picking up the patches from /etc/portage/patches

[v_2e]

  Hello!
  I have noticed that with portage version changes its behaviour
regarding the automatic patch catching (from /etc/portage/patches, for
example) also changes. Some previous versions of portage did apply the
patches from that directory while the most recent one does not.

  I consider this auto-patching feature quite useful and would like to
use it, but currently I don't know how to do that.
  And also, is portage supposed to pick the patches up automatically or
not in general?

   Thank you.
    Vladimir

----- 
 <v_2e@ukr.net>

Re: [gentoo-user] Automatic picking up the patches from /etc/portage/patches

[Hinnerk van Bruinehsen]

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Hash: SHA1

On 04.01.2012 14:47, v_2e@ukr.net wrote:
> Hello! I have noticed that with portage version changes its
> behaviour regarding the automatic patch catching (from
> /etc/portage/patches, for example) also changes. Some previous
> versions of portage did apply the patches from that directory while
> the most recent one does not.
> 
> I consider this auto-patching feature quite useful and would like
> to use it, but currently I don't know how to do that. And also, is
> portage supposed to pick the patches up automatically or not in
> general?
> 
> Thank you. Vladimir
> 
> ----- <v_2e@ukr.net>
> 

According to [1] epatch_user from eutils.eclass needs to be called by
the ebuild for it to work.


[1] http://dev.gentoo.org/~swift/docs/previews/hb-portage-advanced.xml
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Re: [gentoo-user] Automatic picking up the patches from /etc/portage/patches

[Paul Hartman]

On 01/04/2012 07:47 AM, v_2e@ukr.net wrote:
>   Hello!
>   I have noticed that with portage version changes its behaviour
> regarding the automatic patch catching (from /etc/portage/patches, for
> example) also changes. Some previous versions of portage did apply the
> patches from that directory while the most recent one does not.
> 
>   I consider this auto-patching feature quite useful and would like to
> use it, but currently I don't know how to do that.
>   And also, is portage supposed to pick the patches up automatically or
> not in general?

They are only picked up if the ebuild specifically calls epatch_user
function.

However, you can define this in your /etc/portage/bashrc to have
appended to all ebuilds (who don't already define this function):

post_src_prepare() {
    epatch_user
}

then it will call it after it does its normal patching...

For example, I dropped a patch from BGO for xloadimage to make it build
against new libtiff into
/etc/portage/patches/media-gfx/xloadimage-4.1-r11 and emerge, I see this
in emerge output:

>>> Preparing source in
/var/tmp/portage/media-gfx/xloadimage-4.1-r11/work/xloadimage.4.1 ...
 * Applying xloadimage-4.1-gentoo-r1.diff ... [ ok ]
 * Applying xloadimage-4.1-zio-shell-meta-char.diff ... [ ok ]
 * Applying xloadimage-4.1-endif.patch ... [ ok ]
 * Applying xloadimage-4.1-include-errno_h.patch ... [ ok ]
 * Applying xloadimage-gentoo.patch ... [ ok ]
 * Applying xloadimage-4.1-unaligned-access.patch ... [ ok ]
 * Applying xloadimage-4.1-ldflags_and_exit.patch ... [ ok ]
 * Applying xloadimage-4.1-libpng15.patch ... [ ok ]
 * Applying xloadimage-4.1-bracket.patch ... [ ok ]
 * Running eautoreconf in
'/var/tmp/portage/media-gfx/xloadimage-4.1-r11/work/xloadimage.4.1' ...
 * Running aclocal ... [ ok ]
 * Running autoconf ... [ ok ]
 * Running autoheader ... [ ok ]
>>> Source prepared.
 * Applying user patches from
/etc/portage/patches//media-gfx/xloadimage-4.1-r11 ...
 *   xloadimage-4.1-tiff.patch ... [ ok ]
 * Done with patching
>>> Configuring source in
/var/tmp/portage/media-gfx/xloadimage-4.1-r11/work/xloadimage.4.1 ...