Fix Too many levels of recursion in macro expansion

SPECS/kernel-6.1.spec

@@ -172,11 +172,11 @@
 
 %global llvm_ias 1
 
-%global clang_make_opts HOSTCC=clang CC=clang LLVM_IAS=%{llvm_ias} LD=ld.lld HOSTLD=ld.lld AR=llvm-ar NM=llvm-nm HOSTAR=llvm-ar HOSTNM=llvm-nm
-#%%if %{with_clang_lto}
-#%%global clang_make_opts %{clang_make_opts} LD=ld.lld HOSTLD=ld.lld AR=llvm-ar NM=llvm-nm HOSTAR=llvm-ar HOSTNM=llvm-nm
-#%%endif
-%global make_opts %{make_opts} %{clang_make_opts}
+%global clang_make_opts HOSTCC=clang CC=clang LLVM_IAS=%{llvm_ias}
+%if %{with_clang_lto}
+%global clang_make_opts %{clang_make_opts} LD=ld.lld HOSTLD=ld.lld AR=llvm-ar NM=llvm-nm HOSTAR=llvm-ar HOSTNM=llvm-nm
+%endif
+%global make_opts %{clang_make_opts}
 # clang does not support the -fdump-ipa-clones option
 %global with_ipaclones 0
 %endif