Re: [perl PATCH] Switch over to using Module::Build

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On Tue, 2018-05-15 at 20:47 +0100, Daniel P. Berrangé wrote:
> On Tue, May 15, 2018 at 08:17:09PM +0200, Andrea Bolognani wrote:
> > + /usr/bin/perl Build.PL installdirs=vendor
> > Created MYMETA.yml and MYMETA.json
> > Creating new 'Build' script for 'Sys-Virt' version 'v4.4.0'
> > + ./Build
> > Building Sys-Virt
> > ExtUtils::Mkbootstrap::Mkbootstrap('blib/arch/auto/Sys/Virt/Virt.bs')
> > gcc -lpthread -shared -Wl,-z,relro -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -L/usr/local/lib -fstack-protector-strong -lperl -o blib/arch/auto/Sys/Virt/Virt.so lib/Sys/Virt.o -L/home/test/build/lib
> > virt/lib -lvirt
> 
> This is suspect - on mine it is much longer - in particular it has
> the -g flag for creating debuginfo packages
> 
> 
> + /usr/bin/perl Build.PL installdirs=vendor
> Created MYMETA.yml and MYMETA.json
> Creating new 'Build' script for 'Sys-Virt' version 'v4.4.0'
> + ./Build
> Building Sys-Virt
> gcc -I/usr/lib64/perl5/CORE -DVERSION="v4.4.0" -DXS_VERSION="v4.4.0" -fPIC -I/home/berrange/src/virt/libvirt/include -c -D_REENTRANT -D_GNU_SOURCE -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -mcet -fcf-protection -fwrapv -fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -g -o lib/Sys/Virt.o lib/Sys/Virt.c
> ExtUtils::Mkbootstrap::Mkbootstrap('blib/arch/auto/Sys/Virt/Virt.bs')
> gcc -lpthread -shared -Wl,-z,relro -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -L/usr/local/lib -fstack-protector-strong -lperl -o blib/arch/auto/Sys/Virt/Virt.so lib/Sys/Virt.o -L/home/berrange/src/virt/libvirt/src/.libs -lvirt

Okay, I think I'm getting closer to understanding the problem

The CI build steps for Module::Build packages, with irrelevant
details omitted, look like

  perl Build.PL install_base=...
  perl Build
  perl Build manifest
  perl Build install
  perl Build test
  perl Build dist
  rpmbuild -ta *.tar.gz

These are the steps I'm following. The prepare-release.sh script,
however, is slightly different:

  perl Build.PL install_base=..
  ./Build
  ./Build test
  ./Build install
  ./Build dist
  rpmbuild -ta *.tar.gz

The critical difference is that CI calls 'perl Build manifest',
while prepare-release.sh doesn't. If I remove that line from the
CI steps, the build suddenly succeeds on Fedora.

This is how the manifest is changed by the call, with both the
initial file and the updated one filtered through 'sort -u' to
remove the noise caused by some items changing position:

  --- MANIFEST.old        2018-05-16 08:35:17.568120131 +0000
  +++ MANIFEST.new        2018-05-16 08:35:12.246110781 +0000
  @@ -31,10 +31,10 @@
   examples/vol-upload-all.pl
   examples/vol-upload-nonblock.pl
   examples/vol-upload.pl
  -.gitignore
   .gitpublish
   HACKING
   INSTALL
  +lib/Sys/Virt.c
   lib/Sys/Virt/Domain.pm
   lib/Sys/Virt/DomainSnapshot.pm
   lib/Sys/Virt/Error.pm
  @@ -43,6 +43,7 @@
   lib/Sys/Virt/Network.pm
   lib/Sys/Virt/NodeDevice.pm
   lib/Sys/Virt/NWFilter.pm
  +lib/Sys/Virt.o
   lib/Sys/Virt.pm
   lib/Sys/Virt/Secret.pm
   lib/Sys/Virt/StoragePool.pm
  @@ -51,6 +52,7 @@
   lib/Sys/Virt.xs
   LICENSE
   Makefile.PL
  +MANIFEST
   META.json
   META.yml
   perl-Sys-Virt.spec

Interestingly, CentOS 7 is perfectly fine with the updated manifest;
only Fedora is bothered by it.

Another interesting fact is that libvirt-tck doesn't track its
manifest in git, and generates it a build time by calling the same
command as above. I'm not sure if that would be appropriate, but
perhaps a good solution would be to start tracking the manifest in
git for libvirt-tck too and stop calling 'perl Build manifest' as
part of the build procedure altogether.

-- 
Andrea Bolognani / Red Hat / Virtualization

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