Re: %autosetup and conditional patching

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Neal Gompa wrote:
> On Sat, Feb 23, 2019 at 7:25 PM Sérgio Basto <sergio@xxxxxxxxxx> wrote:
>>
>> Sorry for the mistake I just fixed the subject ...
>>
>> Hi,
>>
>> %autosetup -n GDCM-%{version} -S git -N
>> %patch1 -p1
>> %patch2 -p1
>> %patch3 -p1
>> %patch4 -p1
>> %patch5 -p1
>> %if 0%{?fedora} > 29
>> %patch6 -p1 -b .poppler.0.73.0
>> %endif
>>
>> Is this the correct way to apply one patch only in F30 ? , i.e.
>> I need patch 6 not be applied on F28 and epel7, how I do that when we
>> are using %autosetup ?
>>
> 
> If you need to do per-patch application, don't use %autosetup.
> 
> Use individual %patchN macros or use a strategy like this:
> 
> %patch -p1 -P 1 2 3 4 5
> %if 0%{?fedora} >= 30
> %patch6 -p1 -b .poppler.0.73.0
> %endif

Alternately, if you move the %if condition to the Patch6:
header you can let %autosetup handle things still.  In other
words:

...
Patch5: number5.patch
%if 0%{?fedora} > 29
Patch6: fedora-30-and-above.patch
%endif
...
%prep
%autosetup -n GDCM-%{version} -S git
...

I don't see anything in the guidelines section on patches
about avoiding such a conditional, but it's possible there's
a more general rule which I'm forgetting.  If so, I'm happy
to be reminded. :)

-- 
Todd

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