AC_INIT(riscv-tests, 1.0)
cross_compiling=yes
-AC_PROG_CC([riscv64-unknown-elf-gcc])
+AC_PROG_CC
+
+AC_ARG_WITH(xlen,
+ [AS_HELP_STRING([--with-xlen=XLEN],
+ [Set XLEN, the X-register bit width (default is 64)])],
+ AC_SUBST(XLEN, $withval),
+ AC_SUBST(XLEN, 64)
+ )
+
AC_OUTPUT(
Makefile