Re-enable LTO

libsodium.spec

@@ -10,7 +10,7 @@
 
 Name:           libsodium
 Version:        1.0.18
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        The Sodium crypto library
 License:        ISC
 URL:            http://libsodium.org/
@@ -62,10 +62,12 @@ linking applications to use %{name}.
 %build
 # This package has a configure test which uses ASMs, but does not link the
 # resultant .o files.  As such the ASM test is always successful, even on
-# architectures were the ASM is not valid.   The test should be fixed,
-# or alternately we could consider using -ffat-lto-objects, though we
-# generally recommend against that.  For now, disable LTO.
-%define _lto_cflags %{nil}
+# architectures were the ASM is not valid when compiling with LTO.
+#
+# -ffat-lto-objects is sufficient to address this issue.  It is the default
+# for F33, but is expected to only be enabled for packages that need it in
+# F34, so we use it here explicitly
+%define _lto_cflags -flto=auto -ffat-lto-objects
 
 %configure \
   --disable-silent-rules \
@@ -102,6 +104,9 @@ make check
 
 
 %changelog
+* Fri Aug 21 2020 Jeff Law <law@redhat.com> - 1.0.18-6
+- Re-enable LTO
+
 * Tue Jul 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.0.18-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild