[scl.org] perl dependency generation on CentOS 7

[Malcolm Studd]

Hi,

I'm having trouble building a perl 5.18/5.20 SCL on CentOS 7. I already
built a perl 5.18 SCL on CentOS 6 based on the perl516 SCL, and it
worked no problem. Moving to CentOS 7, though, all the requires/provides
are "perl" instead of "perl518-perl"

I followed SCL documentation[1] for creating sofware collections and
adjusted some things in the perl518.spec to more closely match. There is
a /etc/rpm/macros.perl518-config with
   %scl perl518
   %__perl %_scl_root/usr/bin/perl
   %__perl_provides /usr/lib/rpm/perl.perl518-prov
   %__perl_requires /usr/lib/rpm/perl.perl518-req
in it. While %__perl_provides seems to be set when building perl.spec,
it doesn't seem to be used, though it looks like the example in the
docs[2]. Setting %_use_internal_dependency_generator 0 or 1 seems to
have no effect.

I added some manual filtering like shown for pkgconfig:
    %__filter_from_req | /usr/bin/sed -e 's|^perl$|perl518-perl|g'
    %__filter_from_req | /usr/bin/sed -e 's|^perl |perl518-perl |g'
    %__filter_from_req | /usr/bin/sed -e 's| perl(| perl518-perl(|g'
    %__filter_from_req | /usr/bin/sed -e 's|^perl(|perl518-perl(|g'
    %__filter_from_prov | /usr/bin/sed -e 's| perl | perl518-perl |g'
    %__filter_from_prov | /usr/bin/sed -e 's| perl(| perl518-perl(|g'
    %__filter_from_prov | /usr/bin/sed -e 's|^perl(|perl518-perl(|g'
This gets most dependencies, except for:
    perl >= 0:5.000
    ...
    perl >= 1:5.010_000
    perl >= 1:5.010001
    perl518-perl >= 0:5.006
    perl518-perl >= 0:5.009001

Anyone have any idea what's going wrong?

Spec files attached for any clues in there.

Malcolm


[1]
https://access.redhat.com/documentation/en-US/Red_Hat_Developer_Toolset/2/html/Software_Collections_Guide/chap-Packaging_Software_Collections.html#Creating_Your_Own_Software_Collections
[2]
https://access.redhat.com/documentation/en-US/Red_Hat_Developer_Toolset/2/html/Software_Collections_Guide/chap-Advanced_Topics.html
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