File luajit-riscv-fixup.patch of Package texlive

Index: texlive-20250308-source/libs/luajit/m4/lj-system.m4
===================================================================
--- texlive-20250308-source.orig/libs/luajit/m4/lj-system.m4
+++ texlive-20250308-source/libs/luajit/m4/lj-system.m4
@@ -41,6 +41,8 @@ AS_IF([grep 'LJ_TARGET_X64 ' conftest.i
          AS_IF([grep 'MIPSEL ' conftest.i >/dev/null 2>&1],
                  [echo '-D__MIPSEL__=1' >>native_flags])
 	],
+      [grep 'LJ_TARGET_RISCV64 ' conftest.i >/dev/null 2>&1],
+        [LJARCH=riscv64],
         [AC_MSG_ERROR([Sorry, unsupported architecture])])
 AS_IF([grep 'LJ_TARGET_PS3 1'conftest.i >/dev/null 2>&1],
         [LJHOST='PS3'