diff --git a/bigloo.spec b/bigloo.spec
index 2307cb8..d08f40b 100644
--- a/bigloo.spec
+++ b/bigloo.spec
@@ -23,7 +23,7 @@
 
 Name:           bigloo
 Version:        4.3h
-Release:        2%{?patch_ver:.%{patch_ver}}%{?prerel:.%{prerel}}%{?dist}
+Release:        3%{?patch_ver:.%{patch_ver}}%{?prerel:.%{prerel}}%{?dist}
 Summary:        A compiler for the Scheme programming language
 
 License:        GPLv2+
@@ -174,6 +174,11 @@ sed -i 's/a \. b/+inf.0 . +inf.0/' recette/error.scm
 %endif
 
 %build
+# LTO causes bigloo to fault during its build.  I've found the build system
+# to be a total mess for things like incremental builds, .o bisection, and
+# the like.  I give up.  Disable LTO
+%define _lto_cflags %{nil}
+
 %define inplace $PWD/inplace
 
 # Large stack needed to build
@@ -342,6 +347,9 @@ make test
 
 
 %changelog
+* Mon Jul 10 2020 Jeff Law <law@redhat.com> - 4.3h-3
+- Disable LTO
+
 * Fri Jul 10 2020 Jiri Vanek <jvanek@redhat.com> - 4.3h-2
 - Rebuilt for JDK-11, see https://fedoraproject.org/wiki/Changes/Java11