[RFC PATCH 6/8] riscv: Add configure script

[LIU Zhiwei]

For RV64 risu, make CFLAGS="-march=rv64g"

Signed-off-by: LIU Zhiwei <zhiwei_...@c-sky.com>
---
 configure | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index ca2d7db..5c9e967 100755
--- a/configure
+++ b/configure
@@ -58,6 +58,8 @@ guess_arch() {
         ARCH="m68k"
     elif check_define __powerpc64__ ; then
         ARCH="ppc64"
+    elif check_define __riscv ; then
+        ARCH="riscv64"
     else
         echo "This cpu is not supported by risu. Try -h. " >&2
         exit 1
@@ -139,7 +141,7 @@ Some influential environment variables:
                prefixed with the given string.
 
   ARCH         force target architecture instead of trying to detect it.
-               Valid values=[arm|aarch64|ppc64|ppc64le|m68k]
+               Valid values=[arm|aarch64|ppc64|ppc64le|m68k|riscv64]
 
   CC           C compiler command
   CFLAGS       C compiler flags
-- 
2.23.0