diff --git a/macros b/macros
index 01f35dc..858cac1 100644
--- a/macros
+++ b/macros
@@ -328,7 +328,7 @@ print(result)
 # to verify they have real sections/symbols after LTO stripping.  That
 # way we can detect installing an unusable .o/.a file.  This is on the TODO
 # list for F34.
-%_gcc_lto_cflags	-flto -ffat-lto-objects
+%_gcc_lto_cflags	-flto=auto -ffat-lto-objects
 %_clang_lto_cflags	-flto
 %_lto_cflags		%{expand:%%{_%{toolchain}_lto_cflags}}
 
diff --git a/redhat-rpm-config.spec b/redhat-rpm-config.spec
index 328b41e..058a8bf 100644
--- a/redhat-rpm-config.spec
+++ b/redhat-rpm-config.spec
@@ -6,7 +6,7 @@
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
-Version: 165
+Version: 166
 Release: 1%{?dist}
 # No version specified.
 License: GPL+
@@ -211,6 +211,9 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora/srpm forge.lua
 %{_rpmconfigdir}/macros.d/macros.kmp
 
 %changelog
+* Thu Jul 30 2020 Jeff Law <law@redhat.com> - 166-1
+- Use -flto=auto for GCC to speed up builds
+
 * Tue Jul 28 2020 Tom Stellard <tstellar@redhat.com> - 165-1
 - Only use supported lto flags for clang toolchain