rpm: disable LTO in Fedora 34

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@redhat.com>

diff --git a/libvirt.spec.in b/libvirt.spec.in
index 325566f32908e55644de5aa9680b8c2097d60d9d..2a4324b974bc64275d9edfcebcccd3f08f5c48b4 100644 (file)
--- 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