Disable LTO on x86_64 due to memory issues

libfabric.spec

@@ -1,5 +1,10 @@
 %global __remake_config 0
 
+# LTO is running out of memory when building on x86_64
+%ifarch x86_64
+%global _lto_cflags %{nil}
+%endif
+ 
 Name:           libfabric
 Version:        1.15.1
 Release:        1%{?dist}
@@ -96,6 +101,7 @@ find %{buildroot} -name '*.la' -exec rm -f {} ';'
 %changelog
 * Mon May 16 2022 Orion Poplawski <orion@nwra.com> - 1.15.1-1
 - Update to 1.15.1
+- Disable LTO on x86_64 due to memory issues
 
 * Thu Jan 20 2022 Fedora Release Engineering <releng@fedoraproject.org> - 1.14.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild