dynet38: Add version 2.2

.github/workflows/build-dynet38.yml

@@ -0,0 +1,123 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# Based on: https://github.com/taishi-i/dynet/blob/3c9f35de86e98a5809e9c81394194c8f6e0aa0dc/.github/workflows/build_macos_wheels.yml
+# and the test step of https://github.com/taishi-i/dynet/blob/3c9f35de86e98a5809e9c81394194c8f6e0aa0dc/.travis/test_dynet.sh
+name: Build dynet38 wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version glob to (re)build; empty builds every version of docs/packages/dynet38.yaml not released yet'
+        required: false
+        default: ''
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-dynet38.yml'
+      - 'docs/packages/dynet38.yaml'
+      - 'patches/dynet38/**'
+  push:
+    branches: [main]
+    paths:
+      - '.github/workflows/build-dynet38.yml'
+      - 'docs/packages/dynet38.yaml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read  # to fetch code (actions/checkout)
+
+env:
+  # No 2.2 tag; the build_macos_wheels branch tip is the tree the latest 2.2 wheels (cp314) were built from.
+  DYNET38_REF: 3c9f35de86e98a5809e9c81394194c8f6e0aa0dc
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+    with:
+      package: dynet38
+      version: ${{ inputs.version }}
+
+  build_wheels:
+    needs: [setup]
+    if: needs.setup.outputs.versions != '[]'
+    name: Build dynet38 ${{ matrix.version }} ${{ matrix.python }}-manylinux_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 360
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+        python: ["cp312", "cp313", "cp314"]
+
+    env:
+      DYNET38_VERSION: ${{ matrix.version }}
+
+    steps:
+      - name: Checkout dynet ${{ env.DYNET38_REF }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: taishi-i/dynet
+          ref: ${{ env.DYNET38_REF }}
+          persist-credentials: false
+
+      - name: Checkout python-wheels
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          path: python-wheels
+          persist-credentials: false
+
+      - name: Apply patches
+        run: git apply python-wheels/patches/dynet38/${{ env.DYNET38_VERSION }}/*.patch
+
+      - uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        with:
+          output-dir: wheelhouse/
+          only: ${{ matrix.python }}-manylinux_riscv64
+        env:
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          CIBW_ENVIRONMENT: >-
+            PIP_USE_PEP517=1
+            PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple/
+            PIP_ONLY_BINARY=numpy
+          CIBW_TEST_COMMAND: cd {project}/tests/python && python test.py
+
+      - name: Check wheel contents
+        run: |
+          python3 - wheelhouse/*.whl <<'EOF'
+          import sys, zipfile
+          names = zipfile.ZipFile(sys.argv[1]).namelist()
+          assert any(n.startswith("_dynet.") and n.endswith(".so") for n in names), names
+          assert any(n.startswith("dynet38.libs/libdynet") for n in names), names
+          licences = {n.rsplit("/", 1)[-1] for n in names if ".dist-info/licenses/" in n} - {""}
+          assert licences == {"LICENSE.txt", "LICENSE.eigen-mpl2"}, licences
+          EOF
+
+      - name: Store wheels
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: dynet38-${{ env.DYNET38_VERSION }}-${{ matrix.python }}-manylinux_riscv64
+          path: ./wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish dynet38 ${{ matrix.version }}
+    needs: [setup, build_wheels]
+    if: needs.setup.outputs.versions != '[]'
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ${{ fromJSON(needs.setup.outputs.versions) }}
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    secrets:
+      app-private-key: ${{ secrets.RISEPROJECT_APP_PRIVATE_KEY }}
+    with:
+      artifact-pattern: dynet38-${{ matrix.version }}-*-manylinux_riscv64

docs/packages/dynet38.yaml

@@ -0,0 +1,6 @@
+package-name: dynet38
+source-code: https://github.com/taishi-i/dynet
+license: Apache-2.0 / MPL-2.0 (eigen)
+versions:
+- version: '2.2'
+  patched: true

patches/dynet38/2.2/0001-cmake-don-t-pass-march-native-on-RISC-V.patch

@@ -0,0 +1,41 @@
+From 578b42fd151547869f5353ef3db5c8867a7a6f5f Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Fri, 25 Sep 2026 10:46:55 +0000
+Subject: [PATCH 1/3] cmake: don't pass -march=native on RISC-V
+
+The non-Windows, non-Apple-ARM branch of CMakeLists.txt unconditionally
+appends -march=native to CMAKE_CXX_FLAGS. GCC on riscv64 has no "native"
+value for -march and rejects it outright:
+
+  g++: error: '-march=native': ISA string must begin with rv32 or rv64
+
+so setup.py's CMake build fails on the first object file. Skip the flag
+when CMAKE_SYSTEM_PROCESSOR is RISC-V, mirroring the existing carve-out
+for Apple Silicon. DyNet has no ISA-specific code of its own and Eigen
+falls back to its scalar path when no vector ISA is enabled, so the
+build needs no replacement flag; leaving -march at the toolchain default
+(rv64gc) also keeps the wheel portable across riscv64 hardware.
+
+Upstream-Status: To upstream [not yet submitted; clab/dynet has had no commit since 2022, so this belongs in the taishi-i/dynet fork that publishes the dynet38 wheels]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 2acd4211..eda2e11f 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -76,7 +76,7 @@ if(WIN32)
+   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DNOMINMAX")   # Disable min/max macros in windef.h
+ elseif(APPLE AND (${CMAKE_SYSTEM_PROCESSOR} MATCHES "arm.*" OR ${CMAKE_SYSTEM_PROCESSOR} MATCHES "aarch64.*"))
+   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=apple-m1")   # Clang on ARM-based Macs does not support -march=native
+-else()
++elseif(NOT ${CMAKE_SYSTEM_PROCESSOR} MATCHES "riscv.*")   # GCC on RISC-V does not support -march=native
+   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
+ endif()
+
+-- 
+2.43.0
+

patches/dynet38/2.2/0002-mem-fall-back-to-posix_memalign-when-mm_malloc.h-is-.patch

@@ -0,0 +1,57 @@
+From 868a9985403b2c1d24944e1280b2c65e6cbbd66b Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Fri, 25 Sep 2026 10:51:26 +0000
+Subject: [PATCH 2/3] mem: fall back to posix_memalign when <mm_malloc.h> is
+ missing
+
+CPUAllocator gets its 32-byte-aligned blocks from _mm_malloc()/_mm_free(),
+declared in <mm_malloc.h>. GCC installs that header for x86 targets only;
+riscv64 GCC has none, so mem.cc fails to compile:
+
+  dynet/mem.cc:13:10: fatal error: mm_malloc.h: No such file or directory
+
+Keep including the header wherever it exists (or wherever __has_include
+cannot tell), and otherwise define _mm_malloc()/_mm_free() in terms of
+posix_memalign()/free() -- the same pair GCC's own x86 <mm_malloc.h>
+wraps -- so the allocator behaves identically on every target.
+
+Upstream-Status: To upstream [not yet submitted; clab/dynet has had no commit since 2022, so this belongs in the taishi-i/dynet fork that publishes the dynet38 wheels]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+ dynet/mem.cc | 18 ++++++++++++++++++
+ 1 file changed, 18 insertions(+)
+
+diff --git a/dynet/mem.cc b/dynet/mem.cc
+index 700da14c..10460cd3 100644
+--- a/dynet/mem.cc
++++ b/dynet/mem.cc
+@@ -10,7 +10,25 @@
+
+ #include <fcntl.h>
+ #if !_WINDOWS
++#if defined(__has_include)
++#if __has_include(<mm_malloc.h>)
++#define DYNET_HAVE_MM_MALLOC_H 1
++#endif
++#else
++#define DYNET_HAVE_MM_MALLOC_H 1
++#endif
++#if DYNET_HAVE_MM_MALLOC_H
+ #include <mm_malloc.h>
++#else
++// No <mm_malloc.h> on this target (GCC ships it for x86 only): use the same
++// posix_memalign()/free() pair that GCC's x86 <mm_malloc.h> wraps.
++static inline void* _mm_malloc(size_t size, size_t align) {
++  void* ptr;
++  if (align < sizeof(void*)) align = sizeof(void*);
++  return posix_memalign(&ptr, align, size) == 0 ? ptr : nullptr;
++}
++static inline void _mm_free(void* ptr) { free(ptr); }
++#endif
+ #endif
+ #include "dynet/except.h"
+ #include "dynet/devices.h"
+-- 
+2.43.0
+