From 29decdf265479e793f83779fdd5e0af38c11960e Mon Sep 17 00:00:00 2001
From: haurog <36535774+haurog@users.noreply.github.com>
Date: Wed, 11 Dec 2024 10:32:15 +0100
Subject: [PATCH] Enable compiling on RISC-V CPU (#2925)

---
 config.nims | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/config.nims b/config.nims
index 28535a23cc..261dabf73a 100644
--- a/config.nims
+++ b/config.nims
@@ -102,6 +102,11 @@ elif defined(macosx) and defined(arm64):
   # Apple's Clang can't handle "-march=native" on M1: https://github.com/status-im/nimbus-eth2/issues/2758
   switch("passC", "-mcpu=apple-a14")
   switch("passL", "-mcpu=apple-a14")
+elif defined(riscv64):
+  # riscv64 needs specification of ISA with extensions. 'gc' is widely supported 
+  # and seems to be the minimum extensions needed to build. 
+  switch("passC", "-march=rv64gc")
+  switch("passL", "-march=rv64gc")
 else:
   switch("passC", "-march=native")
   switch("passL", "-march=native")