Enable riscv64

Untested.

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

Random123.spec

@@ -2,13 +2,14 @@
 
 Name:       Random123
 Version:    1.14.0
-Release:    5%{?dist}
+Release:    5.0.riscv64%{?dist}
 Summary:    Library of random number generators
 
 License:    BSD
 URL:        https://github.com/DEShawResearch/random123/
 Source0:    %{url}/archive/v%{version}/%{name}-%{version}.tar.gz
 Patch0:     0001-add-missing-headers.patch
+Patch9:     enable-riscv.patch
 
 # gccfeatures.h mentions what arches are supported
 # these aren't on the list
@@ -80,6 +81,9 @@ popd
 %doc examples
 
 %changelog
+* Wed Mar 22 2023 David Abdurachmanov <davidlt@rivosinc.com> - 1.14.0-5.0.riscv64
+- Enable riscv64
+
 * Wed Jan 18 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1.14.0-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild
 

enable-riscv.patch

@@ -0,0 +1,13 @@
+diff --git a/include/Random123/features/gccfeatures.h b/include/Random123/features/gccfeatures.h
+index 51c46aa..00e27b4 100644
+--- a/include/Random123/features/gccfeatures.h
++++ b/include/Random123/features/gccfeatures.h
+@@ -34,7 +34,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ 
+ #define R123_GNUC_VERSION (__GNUC__*10000 + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__)
+ 
+-#if !defined(__x86_64__) && !defined(__i386__) && !defined(__powerpc__) && !defined(__arm__) && !defined(__aarch64__) && !defined(__s390x__)
++#if !defined(__x86_64__) && !defined(__i386__) && !defined(__powerpc__) && !defined(__arm__) && !defined(__aarch64__) && !defined(__s390x__) && !defined(__riscv)
+ #  error "This code has only been tested on x86, powerpc and a few arm platforms."
+ #include <including_a_nonexistent_file_will_stop_some_compilers_from_continuing_with_a_hopeless_task>
+ { /* maybe an unbalanced brace will terminate the compilation */