From 96fc38fb5ad3829c56a38693e776e0d432084196 Mon Sep 17 00:00:00 2001
From: Daniel Lemire <daniel@lemire.me>
Date: Thu, 11 Sep 2025 22:11:05 -0400
Subject: [PATCH] adding risc ci

---
 .github/workflows/risc.yml                  | 29 +++++++++++++++++++++
 cmake/toolchains-ci/riscv64-linux-gnu.cmake |  4 +++
 2 files changed, 33 insertions(+)
 create mode 100644 .github/workflows/risc.yml
 create mode 100644 cmake/toolchains-ci/riscv64-linux-gnu.cmake

diff --git a/.github/workflows/risc.yml b/.github/workflows/risc.yml
new file mode 100644
index 0000000..65c6b79
--- /dev/null
+++ b/.github/workflows/risc.yml
@@ -0,0 +1,29 @@
+name: Ubuntu rvv VLEN=128 (clang 17)
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install packages
+      run: |
+        sudo apt-get update -q -y
+        sudo apt-get install -y cmake make g++-riscv64-linux-gnu qemu-user-static clang-17
+    - name: Build
+      run: |
+        CXX=clang++-17 CXXFLAGS="--target=riscv64-linux-gnu -march=rv64gcv" \
+        cmake --toolchain=cmake/toolchains-ci/riscv64-linux-gnu.cmake -DCMAKE_BUILD_TYPE=Release -B build
+        cmake --build build/ -j$(nproc)
+    - name: Test VLEN=128
+      run: |
+        export QEMU_LD_PREFIX="/usr/riscv64-linux-gnu"
+        export QEMU_CPU="rv64,v=on,vlen=128,rvv_ta_all_1s=on,rvv_ma_all_1s=on"
+        ctest --timeout 1800 --output-on-failure --test-dir build -j $(nproc)
diff --git a/cmake/toolchains-ci/riscv64-linux-gnu.cmake b/cmake/toolchains-ci/riscv64-linux-gnu.cmake
new file mode 100644
index 0000000..ed58a2d
--- /dev/null
+++ b/cmake/toolchains-ci/riscv64-linux-gnu.cmake
@@ -0,0 +1,4 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR riscv64)
+
+set(CMAKE_CROSSCOMPILING_EMULATOR "qemu-riscv64-static")