Resolves: #1990081, Enable LTO

doxygen.spec

@@ -1,9 +1,3 @@
-# doxygen is known not to work properly with LTO at this point.  Some of the issues
-# are being worked on upstream and disabling LTO should be re-evaluated as
-# we update this change.  Until such time...
-# Disable LTO
-%global _lto_cflags %{nil}
-
 %if 0%{?fedora}
 %global xapian_core_support ON
 %global clang_support ON
@@ -16,7 +10,7 @@ Summary: A documentation system for C/C++
 Name:    doxygen
 Epoch:   1
 Version: 1.9.1
-Release: 10%{?dist}
+Release: 11%{?dist}
 
 # No version is specified.
 License: GPL+
@@ -304,6 +298,9 @@ desktop-file-install --dir=%{buildroot}%{_datadir}/applications %{SOURCE1}
 %endif
 
 %changelog
+* Thu Aug 19 2021 Than Ngo <than@redhat.com> - 1:1.9.1-11
+- Resolves: #1990081, Enable LTO
+
 * Mon Aug 09 2021 Mohan Boddu <mboddu@redhat.com> - 1:1.9.1-10
 - Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
   Related: rhbz#1991688