From cf51260f496296c8f85c1264803322861a7324e3 Mon Sep 17 00:00:00 2001
From: Nils Ponsard <nilsponsard@gmail.com>
Date: Mon, 17 Feb 2025 16:25:12 +0100
Subject: [PATCH 1/2] feat: add build mechanism for libwebrtc for riscv64

---
 .github/workflows/webrtc-builds.yml    |  6 +++++-
 .nanpa/add-riscv64-linux-libwebrtc.kdl |  1 +
 webrtc-sys/libwebrtc/build_linux.sh    | 21 ++++++++++++++++++++-
 3 files changed, 26 insertions(+), 2 deletions(-)
 create mode 100644 .nanpa/add-riscv64-linux-libwebrtc.kdl

diff --git a/.github/workflows/webrtc-builds.yml b/.github/workflows/webrtc-builds.yml
index 60ebcd68a..d58e29b82 100644
--- a/.github/workflows/webrtc-builds.yml
+++ b/.github/workflows/webrtc-builds.yml
@@ -54,7 +54,11 @@ jobs:
             os: buildjet-8vcpu-ubuntu-2004
             cmd: ./build_linux.sh
             arch: arm64
-
+          - name: linux
+            os: buildjet-8vcpu-ubuntu-2004
+            cmd: ./build_linux.sh
+            arch: riscv64
+            
           - name: android
             os: buildjet-8vcpu-ubuntu-2004
             cmd: ./build_android.sh
diff --git a/.nanpa/add-riscv64-linux-libwebrtc.kdl b/.nanpa/add-riscv64-linux-libwebrtc.kdl
new file mode 100644
index 000000000..cf4302348
--- /dev/null
+++ b/.nanpa/add-riscv64-linux-libwebrtc.kdl
@@ -0,0 +1 @@
+minor type="added" "Added build mechanism for riscv64"
\ No newline at end of file
diff --git a/webrtc-sys/libwebrtc/build_linux.sh b/webrtc-sys/libwebrtc/build_linux.sh
index ef63dc744..a843ad808 100755
--- a/webrtc-sys/libwebrtc/build_linux.sh
+++ b/webrtc-sys/libwebrtc/build_linux.sh
@@ -21,7 +21,7 @@ while [ "$#" -gt 0 ]; do
   case "$1" in
     --arch)
       arch="$2"
-      if [ "$arch" != "x64" ] && [ "$arch" != "arm64" ]; then
+      if [ "$arch" != "x64" ] && [ "$arch" != "arm64" ] && [ "$arch" != "riscv64" ]; then
         echo "Error: Invalid value for --arch. Must be 'x64' or 'arm64'."
         exit 1
       fi
@@ -79,13 +79,32 @@ cd ..
 
 mkdir -p "$ARTIFACTS_DIR/lib"
 
+if [[ "$arch" == "riscv64" ]]
+then
+# somehow you have to configure ffmpeg manually for riscv64
+cd src/third_party/ffmpeg && ./configure --arch=riscv64 && make -j16 || true && cd ../../../
+
+# Manually create a sysroot
+sudo apt-get install libasound2-dev libpulse-dev libavutil-dev g++-riscv64-linux-gnu debootstrap
+sudo debootstrap \
+  --arch=riscv64 \
+  --include=qtbase5-dev,qt6-base-dev,qt6-base-dev-tools,krb5-multidev,libasound2-dev,libatk-bridge2.0-dev,libatk1.0-dev,libatspi2.0-dev,libblkid-dev,libbluetooth-dev,libc-dev-bin,libc6-dev,libcrypt-dev,libcups2-dev,libcurl4-gnutls-dev,libdbus-1-dev,libdbusmenu-glib-dev,libdbusmenu-gtk3-dev,libdevmapper1.02.1,libdrm-dev,libffi-dev,libflac-dev,libgbm-dev,libgcc-12-dev,libgcrypt20-dev,libgdk-pixbuf-2.0-dev,libgl1-mesa-dev,libglib2.0-dev,libglib2.0-dev-bin,libgtk-3-dev,libgtk-4-dev,libjsoncpp-dev,libkrb5-dev,libmount-dev,libnotify-dev,libnsl-dev,libnss3-dev,libpango1.0-dev,libpci-dev,libpcre2-dev,libpipewire-0.3-dev,libpulse-dev,libre2-dev,libselinux1-dev,libsepol-dev,libspeechd-dev,libstdc++-12-dev,libstdc++-13-dev,libtirpc-dev,libudev1,libva-dev,libx11-xcb-dev,libxkbcommon-x11-dev,libxshmfence-dev,linux-libc-dev,mesa-common-dev,uuid-dev,zlib1g-dev,wayland-protocols,libasan8 \
+  sid \
+  build/linux/debian_sid_riscv64-sysroot \
+  https://snapshot.debian.org/archive/debian/20240907T023014Z/
+
+sudo chown 1000:1000 -R src/build/linux/debian_sid_riscv64-sysroot
+else
 python3 "./src/build/linux/sysroot_scripts/install-sysroot.py" --arch="$arch"
+fi
 
 debug="false"
 if [ "$profile" = "debug" ]; then
   debug="true"
 fi
 
+set -e
+
 args="is_debug=$debug  \
   target_os=\"linux\" \
   target_cpu=\"$arch\" \

From 308672ec8bbd76c2d0de8e94fe41b7a9092467ba Mon Sep 17 00:00:00 2001
From: Nils Ponsard <nilsponsard@gmail.com>
Date: Wed, 26 Feb 2025 17:29:13 +0100
Subject: [PATCH 2/2] fix: disable asm for ffmpeg

---
 webrtc-sys/libwebrtc/build_linux.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/webrtc-sys/libwebrtc/build_linux.sh b/webrtc-sys/libwebrtc/build_linux.sh
index a843ad808..b0bd5aeb3 100755
--- a/webrtc-sys/libwebrtc/build_linux.sh
+++ b/webrtc-sys/libwebrtc/build_linux.sh
@@ -82,7 +82,7 @@ mkdir -p "$ARTIFACTS_DIR/lib"
 if [[ "$arch" == "riscv64" ]]
 then
 # somehow you have to configure ffmpeg manually for riscv64
-cd src/third_party/ffmpeg && ./configure --arch=riscv64 && make -j16 || true && cd ../../../
+cd src/third_party/ffmpeg && ./configure --arch=riscv64 --no-asm && make -j16 || true && cd ../../../
 
 # Manually create a sysroot
 sudo apt-get install libasound2-dev libpulse-dev libavutil-dev g++-riscv64-linux-gnu debootstrap