Re: [libvirt PATCH] rpm: disable LTO in Fedora 34

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On Wed, Oct 21, 2020 at 01:19:48PM +0100, Daniel P. Berrangé wrote:
> A binutils change has caused breakage when linking the tests
> 
> /usr/bin/ld: tests/libtest_qemu_driver.so: undefined reference to `__open_missing_mode'
> 
> This is probably a regression in binutils, so disable LTO until we get
> more clarity on the root cause and whether binutils or libvirt will need
> changing.
> 
>   https://bugzilla.redhat.com/show_bug.cgi?id=1889763
> 
> Signed-off-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
> ---
>  libvirt.spec.in | 7 +++++++
>  1 file changed, 7 insertions(+)

I've pushed this as a CI build fix now that my test pipeline has
succeeded.

> 
> diff --git a/libvirt.spec.in b/libvirt.spec.in
> index 325566f329..2a4324b974 100644
> --- a/libvirt.spec.in
> +++ b/libvirt.spec.in
> @@ -990,6 +990,13 @@ Libvirt plugin for NSS for translating domain names into IP addresses.
>  %autosetup -S git_am
>  
>  %build
> +
> +%if 0%{?fedora} == 34
> +    # binutils change in F34 broke linking of tests
> +    # https://bugzilla.redhat.com/show_bug.cgi?id=1889763
> +    %define _lto_cflags %{nil}
> +%endif
> +
>  %if ! %{supported_platform}
>  echo "This RPM requires either Fedora >= %{min_fedora} or RHEL >= %{min_rhel}"
>  exit 1
> -- 
> 2.26.2
> 

Regards,
Daniel
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