add linux/musl-riscv64 build

.github/workflows/ci.yml

@@ -33,12 +33,16 @@ jobs:
             name: linux-arm64
           - os: ubuntu-24.04
             name: linux-ppc64le
+          - os: ubuntu-24.04
+            name: linux-riscv64
           - os: ubuntu-24.04
             name: linux-musl-x64
           - os: ubuntu-24.04
             name: linux-musl-arm
           - os: ubuntu-24.04
             name: linux-musl-arm64
+          - os: ubuntu-24.04
+            name: linux-musl-riscv64
           - os: macos-14
             name: osx-x64
           - os: macos-14
@@ -55,9 +59,6 @@ jobs:
       - name: Build macOS
         if: runner.os == 'macOS'
         run: ./build.libgit2.sh
-      - name: Setup QEMU
-        if: matrix.name == 'linux-musl-arm' || matrix.name == 'linux-musl-arm64'
-        run: docker run --rm --privileged multiarch/qemu-user-static:register --reset
       - name: Build Linux
         if: runner.os == 'Linux'
         run: ./dockerbuild.sh

README.md

@@ -12,8 +12,8 @@ the following platforms:
  - Windows (x86, x64, arm64)
  - macOS (x64, arm64)
  - Linux
-   - glibc: (x64, arm, arm64, ppc64le)
-   - musl: (x64, arm, arm64)
+   - glibc: (x64, arm, arm64, ppc64le, riscv64)
+   - musl: (x64, arm, arm64, riscv64)
 
  [lg2s-nb]: https://www.nuget.org/packages/LibGit2Sharp.NativeBinaries
  [lg2]: https://libgit2.github.com/

UpdateLibgit2ToSha.ps1

@@ -124,6 +124,7 @@ Push-Location $libgit2Directory
     <dllmap os="linux" cpu="arm" wordsize="32" dll="$binaryFilename" target="lib/linux-arm/lib$binaryFilename.so" />
     <dllmap os="linux" cpu="armv8" wordsize="64" dll="$binaryFilename" target="lib/linux-arm64/lib$binaryFilename.so" />
     <dllmap os="linux" cpu="ppc64le" wordsize="64" dll="$binaryFilename" target="lib/linux-ppc64le/lib$binaryFilename.so" />
+    <dllmap os="linux" cpu="riscv64" wordsize="64" dll="$binaryFilename" target="lib/linux-riscv64/lib$binaryFilename.so" />
     <dllmap os="osx" cpu="x86-64" wordsize="64" dll="$binaryFilename" target="lib/osx-x64/lib$binaryFilename.dylib" />
     <dllmap os="osx" cpu="armv8" wordsize="64" dll="$binaryFilename" target="lib/osx-arm64/lib$binaryFilename.dylib" />
 </configuration>

docker/linux

@@ -1,9 +1,42 @@
-FROM kmturley/crossbuild
-ARG ARCH='amd64'
-ENV CROSS_TRIPLE=${ARCH}
-RUN apt update && apt -y install pkg-config
+FROM ubuntu:24.04
+ARG ARCH=amd64
+ARG IS_MUSL=false
+
+# 1. Install common host utilities
+RUN apt-get update && apt-get install -y \
+    build-essential cmake git pkg-config wget xz-utils
+
+# 2. Setup GLIBC Cross-Compilers (if not musl)
+RUN if [ "$IS_MUSL" = "false" ]; then \
+        if [ "$ARCH" = "arm64" ]; then apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu && echo "CC=aarch64-linux-gnu-gcc\nCXX=aarch64-linux-gnu-g++" >> /env_vars; \
+        elif [ "$ARCH" = "armhf" ]; then apt-get install -y gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf && echo "CC=arm-linux-gnueabihf-gcc\nCXX=arm-linux-gnueabihf-g++" >> /env_vars; \
+        elif [ "$ARCH" = "powerpc64le" ]; then apt-get install -y gcc-powerpc64le-linux-gnu g++-powerpc64le-linux-gnu && echo "CC=powerpc64le-linux-gnu-gcc\nCXX=powerpc64le-linux-gnu-g++" >> /env_vars; \
+        elif [ "$ARCH" = "riscv64" ]; then apt-get install -y gcc-riscv64-linux-gnu g++-riscv64-linux-gnu && echo "CC=riscv64-linux-gnu-gcc\nCXX=riscv64-linux-gnu-g++" >> /env_vars; \
+        else echo "CC=gcc\nCXX=g++" >> /env_vars; fi \
+    fi
+
+# 3. Setup MUSL Cross-Compilers via Dyne.org mirror (if musl)
+RUN if [ "$IS_MUSL" = "true" ]; then \
+        if [ "$ARCH" = "arm64" ]; then FILE_NAME="dyne-gcc-musl-arm_64.tar.xz" && BIN_PREFIX="aarch64-linux-musl"; \
+        elif [ "$ARCH" = "armhf" ]; then FILE_NAME="dyne-gcc-musl-arm_hf.tar.xz" && BIN_PREFIX="arm-linux-musleabihf"; \
+        elif [ "$ARCH" = "riscv64" ]; then FILE_NAME="dyne-gcc-musl-riscv_64.tar.xz" && BIN_PREFIX="riscv64-linux-musl"; \
+        else FILE_NAME="dyne-gcc-musl-x86_64.tar.xz" && BIN_PREFIX="x86_64-linux-musl"; fi && \
+        mkdir -p /opt/musl-cross && \
+        wget "https://files.dyne.org/musl/${FILE_NAME}" && \
+        tar -xJf ${FILE_NAME} -C /opt/musl-cross --strip-components=1 && \
+        rm ${FILE_NAME} && \
+        echo "CC=/opt/musl-cross/gcc-musl/bin/${BIN_PREFIX}-gcc" >> /env_vars && \
+        echo "CXX=/opt/musl-cross/gcc-musl/bin/${BIN_PREFIX}-g++" >> /env_vars && \
+        echo "AR=/opt/musl-cross/gcc-musl/bin/${BIN_PREFIX}-ar" >> /env_vars && \
+        echo "AS=/opt/musl-cross/gcc-musl/bin/${BIN_PREFIX}-as" >> /env_vars && \
+        echo "CFLAGS=-I/opt/musl-cross/gcc-musl/${BIN_PREFIX}/include" >> /env_vars && \
+        echo "CXXFLAGS=-I/opt/musl-cross/gcc-musl/${BIN_PREFIX}/include" >> /env_vars && \
+        echo "LDFLAGS=-L/opt/musl-cross/gcc-musl/${BIN_PREFIX}/lib" >> /env_vars && \
+        echo "PKG_CONFIG_PATH=/opt/musl-cross/gcc-musl/${BIN_PREFIX}/lib/pkgconfig" >> /env_vars; \
+    fi
 
 WORKDIR /nativebinaries
 COPY . /nativebinaries/
 
-CMD ["/bin/bash", "-c", "./build.libgit2.sh"]
+# Inject environmental paths dynamically to run the libgit2 build script natively
+CMD ["/bin/bash", "-c", "export $(cat /env_vars | xargs) && ./build.libgit2.sh"]

dockerbuild.sh

@@ -9,17 +9,21 @@ elif [[ $RID =~ arm ]]; then
     arch="armhf"
 elif [[ $RID =~ ppc64le ]]; then
     arch="powerpc64le"
+elif [[ $RID =~ riscv64 ]]; then
+    arch="riscv64"
 else
     arch="amd64"
 fi
 
 if [[ $RID == linux-musl* ]]; then
-    dockerfile="docker/musl"
+    is_musl="true"
 else
-    dockerfile="docker/linux"
+    is_musl="false"
 fi
 
-docker buildx build -t $RID -f $dockerfile --build-arg ARCH=$arch .
+docker build -t $RID -f docker/linux \
+    --build-arg ARCH=$arch \
+    --build-arg IS_MUSL=$is_musl .
 
 docker run -t -e RID=$RID --name=$RID $RID
 

nuget.package/libgit2/LibGit2Sharp.dll.config

@@ -3,6 +3,7 @@
     <dllmap os="linux" cpu="arm" wordsize="32" dll="git2-3f4182d" target="lib/linux-arm/libgit2-3f4182d.so" />
     <dllmap os="linux" cpu="armv8" wordsize="64" dll="git2-3f4182d" target="lib/linux-arm64/libgit2-3f4182d.so" />
     <dllmap os="linux" cpu="ppc64le" wordsize="64" dll="git2-3f4182d" target="lib/linux-ppc64le/libgit2-3f4182d.so" />
+    <dllmap os="linux" cpu="riscv64" wordsize="64" dll="git2-3f4182d" target="lib/linux-riscv64/libgit2-3f4182d.so" />
     <dllmap os="osx" cpu="x86-64" wordsize="64" dll="git2-3f4182d" target="lib/osx-x64/libgit2-3f4182d.dylib" />
     <dllmap os="osx" cpu="armv8" wordsize="64" dll="git2-3f4182d" target="lib/osx-arm64/libgit2-3f4182d.dylib" />
 </configuration>