Disable LTO on riscv64

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

libcxxabi.spec

@@ -6,7 +6,7 @@
 
 Name:		libcxxabi
 Version:	%{libcxxabi_version}%{?rc_ver:~rc%{rc_ver}}
-Release:	2%{?dist}
+Release:	2.0.riscv64%{?dist}
 Summary:	Low level support for a standard C++ library
 License:	MIT or NCSA
 URL:		http://libcxxabi.llvm.org/
@@ -51,7 +51,7 @@ Summary:	Static libraries for libcxxabi
 sed -i 's|${LLVM_BINARY_DIR}/share/llvm/cmake|%{_libdir}/cmake/llvm|g' CMakeLists.txt
 
 %build
-%ifarch armv7hl
+%ifarch armv7hl riscv64
 # Disable LTO on ARM. bfd crashes during some of the CMake compiler checks with:
 # /usr/bin/ld: BFD version 2.35-10.fc33 internal error, aborting at elfcode.h:224 in bfd_elf32_swap_symbol_out
 %global _lto_cflags %{nil}
@@ -102,6 +102,9 @@ cp -a include/* %{buildroot}%{_includedir}
 %{_libdir}/libc++abi.a
 
 %changelog
+* Thu Aug 25 2022 David Abdurachmanov <davidlt@rivosinc.com> - 14.0.5-2.0.riscv64
+- Disable LTO on riscv64
+
 * Thu Jul 21 2022 Fedora Release Engineering <releng@fedoraproject.org> - 14.0.5-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild