Use a better way to disable LTO

libxcrypt.spec

@@ -151,6 +151,11 @@ fi                                          \
 %global _ld_strict_symbol_defs 1
 
 
+# The configure scripts want to use -Wl,--wrap,
+# which is not compatible with LTO.
+%undefine _lto_cflags
+
+
 Name:           libxcrypt
 Version:        4.4.16
 Release:        5%{?dist}
@@ -331,9 +336,6 @@ EOF
 
 
 %build
-# The configure scripts want to use -Wl,--wrap which is not compatible with LTO
-%define _lto_cflags %{nil}
-
 mkdir -p %{_vpath_builddir}
 
 # Build the default system library.