Disable LTO on riscv64

Signed-off-by: David Abdurachmanov <davidlt@rivosinc.com>

lldb.spec

@@ -11,7 +11,7 @@
 
 Name:		lldb
 Version:	%{lldb_version}%{?rc_ver:~rc%{rc_ver}}
-Release:	1%{?dist}
+Release:	1.0.riscv64%{?dist}
 Summary:	Next generation high-performance debugger
 
 License:	Apache-2.0 WITH LLVM-exception OR NCSA
@@ -73,7 +73,11 @@ The package contains the LLDB Python module.
 %autosetup -n %{lldb_srcdir} -p2
 
 %build
+%ifnarch riscv64
 %global _lto_cflags -flto=thin
+%else
+%global _lto_cflags %{nil}
+%endif
 
 %cmake  -GNinja \
 	-DCMAKE_BUILD_TYPE=RelWithDebInfo \
@@ -136,6 +140,9 @@ rm -f %{buildroot}%{python3_sitearch}/six.*
 %{python3_sitearch}/lldb
 
 %changelog
+* Tue Apr 25 2023 David Abdurachmanov <davidlt@rivosinc.com> - 16.0.1-1.0.riscv64
+- Disable LTO on riscv64
+
 * Thu Apr 13 2023 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 16.0.1-1
 - Update to LLVM 16.0.1