From 1ff61e08cac1c4c682e41eeec7c30b530e699cfa Mon Sep 17 00:00:00 2001
From: Philip Silva <philip.silva@protonmail.com>
Date: Sun, 29 Mar 2026 12:05:27 +0200
Subject: [PATCH] Use lld for linking

* It has more flexibility and a smaller memory footprint
* Build time can also improve
---
 platform/riscv-qemu-user/scripts/c2riscv-qemu-user.sh | 5 +++++
 platform/riscv-qemu/scripts/c2riscv-qemu.sh           | 1 +
 platform/zkvm/scripts/c2zkvm.sh                       | 1 +
 3 files changed, 7 insertions(+)

diff --git a/platform/riscv-qemu-user/scripts/c2riscv-qemu-user.sh b/platform/riscv-qemu-user/scripts/c2riscv-qemu-user.sh
index 222c8dc..8bfdfca 100755
--- a/platform/riscv-qemu-user/scripts/c2riscv-qemu-user.sh
+++ b/platform/riscv-qemu-user/scripts/c2riscv-qemu-user.sh
@@ -84,6 +84,10 @@ CFLAGS=(
     $OPT_LEVEL
 )
 
+LDFLAGS=(
+    -fuse-ld=lld
+)
+
 # Include directories
 INCLUDES=(
     -I"$GUEST_DIR"
@@ -101,6 +105,7 @@ SOURCES=(
 
 clang \
     "${CFLAGS[@]}" \
+    "${LDFLAGS[@]}" \
     "${INCLUDES[@]}" \
     "${SOURCES[@]}" \
     -o "$OUTPUT" -lm 2>&1
diff --git a/platform/riscv-qemu/scripts/c2riscv-qemu.sh b/platform/riscv-qemu/scripts/c2riscv-qemu.sh
index 3a4c067..bafa886 100755
--- a/platform/riscv-qemu/scripts/c2riscv-qemu.sh
+++ b/platform/riscv-qemu/scripts/c2riscv-qemu.sh
@@ -120,6 +120,7 @@ LINKER_SCRIPT=platform/riscv-qemu/virt.ld
 
 # Linker flags (matching demo-qemu-virt-riscv/Makefile)
 LDFLAGS=(
+    -fuse-ld=lld
     -T"$LINKER_SCRIPT"
     -nostartfiles
     -nostdlib
diff --git a/platform/zkvm/scripts/c2zkvm.sh b/platform/zkvm/scripts/c2zkvm.sh
index c15f8e4..708ebc0 100755
--- a/platform/zkvm/scripts/c2zkvm.sh
+++ b/platform/zkvm/scripts/c2zkvm.sh
@@ -114,6 +114,7 @@ LINKER_SCRIPT=platform/zkvm/zkvm.ld
 
 # Linker flags
 LDFLAGS=(
+    -fuse-ld=lld
     --target=riscv64
     -march=rv64ima
     -mabi=lp64