Disable LTO

libvpx.spec

@@ -6,7 +6,7 @@
 Name:			libvpx
 Summary:		VP8/VP9 Video Codec SDK
 Version:		1.8.2
-Release:		2%{?dist}
+Release:		3%{?dist}
 License:		BSD
 #Source0:		http://downloads.webmproject.org/releases/webm/%{name}-%{version}.tar.bz2
 Source0:		https://github.com/webmproject/libvpx/archive/v%{version}.tar.gz
@@ -49,6 +49,12 @@ and decoder.
 %patch0 -p1 -b .leave-fs-on
 
 %build
+# This package fails to build with LTO due to undefined symbols.  LTO
+# was disabled in OpenSuSE as well, but with no real explanation why
+# beyond the undefined symbols.  It really shold be investigated further.
+# Disable LTO
+%define _lto_cflags %{nil}
+
 %ifarch %{ix86}
 %global vpxtarget x86-linux-gcc
 %else
@@ -231,6 +237,9 @@ rm -rf %{buildroot}%{_prefix}/src
 %{_bindir}/*
 
 %changelog
+* Wed Jul 01 2020 Jeff Law <law@redhat.com> - 1.8.2-3
+- Disable LTO
+
 * Wed Jan 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.8.2-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild