Disable LTO

libbsd.spec

@@ -1,6 +1,6 @@
 Name:           libbsd
 Version:        0.10.0
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Library providing BSD-compatible functions for portability
 URL:            http://libbsd.freedesktop.org/
 License:        BSD and ISC and Copyright only and Public Domain
@@ -42,6 +42,14 @@ configured using "pkg-config --libs libbsd-ctor".
 %endif
 
 %build
+# This package uses top level ASM constructs which are incompatible with LTO.
+# Top level ASMs are often used to implement symbol versioning.  gcc-10
+# introduces a new mechanism for symbol versioning which works with LTO.
+# Converting packages to use that mechanism instead of toplevel ASMs is
+# recommended.
+# Disable LTO
+%define _lto_cflags %{nil}
+
 %configure
 %make_build V=1
 
@@ -79,6 +87,9 @@ rm %{buildroot}%{_mandir}/man3/explicit_bzero.3bsd
 %{_libdir}/pkgconfig/%{name}-ctor.pc
 
 %changelog
+* Wed Jul  1 2020 Jeff Law <law@redhat.com> - 0.10.0-3
+- Disable LTO
+
 * Wed Jan 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.10.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild