Add LoongArch64 build support

binding/HarfBuzzSharp.NativeAssets.Linux/HarfBuzzSharp.NativeAssets.Linux.csproj

@@ -11,12 +11,14 @@
     <PackageFile Include="..\..\output\native\linux\arm64\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-arm64\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\linux\arm\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-arm\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\linux\riscv64\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-riscv64\native\%(Filename)%(Extension)" />
+    <PackageFile Include="..\..\output\native\linux\loongarch64\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-loongarch64\native\%(Filename)%(Extension)" />
     <!-- Musl -->
     <PackageFile Include="..\..\output\native\alpine\x64\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-musl-x64\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpine\x86\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-musl-x86\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpine\arm64\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-musl-arm64\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpine\arm\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-musl-arm\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpine\riscv64\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-musl-riscv64\native\%(Filename)%(Extension)" />
+    <PackageFile Include="..\..\output\native\alpine\loongarch64\libHarfBuzzSharp*.so" PackagePath="runtimes\linux-musl-loongarch64\native\%(Filename)%(Extension)" />
   </ItemGroup>
   <Target Name="IncludeAdditionalTfmSpecificPackageFiles">
     <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">

binding/HarfBuzzSharp.NativeAssets.Linux/buildTransitive/net4/HarfBuzzSharp.targets

@@ -25,6 +25,9 @@
         <_NativeHarfBuzzSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-riscv64\native\libHarfBuzzSharp*.so">
             <Dir>riscv64\</Dir>
         </_NativeHarfBuzzSharpFile>
+        <_NativeHarfBuzzSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-loongarch64\native\libHarfBuzzSharp*.so">
+            <Dir>loongarch64\</Dir>
+        </_NativeHarfBuzzSharpFile>
 
         <!-- Musl -->
         <_NativeHarfBuzzSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-musl-x86\native\libHarfBuzzSharp*.so">
@@ -42,6 +45,9 @@
         <_NativeHarfBuzzSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-musl-riscv64\native\libHarfBuzzSharp*.so">
             <Dir>musl-riscv64\</Dir>
         </_NativeHarfBuzzSharpFile>
+        <_NativeHarfBuzzSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-musl-loongarch64\native\libHarfBuzzSharp*.so">
+            <Dir>musl-loongarch64\</Dir>
+        </_NativeHarfBuzzSharpFile>
 
         <!-- include everything -->
         <Content Include="@(_NativeHarfBuzzSharpFile)">

binding/SkiaSharp.NativeAssets.Linux.NoDependencies/SkiaSharp.NativeAssets.Linux.NoDependencies.csproj

@@ -10,7 +10,9 @@ The complete dependency list is:
  - libdl.so.2
  - libm.so.6
  - libc.so.6
- - ld-linux-x86-64.so.2
+ - ld-linux-x86-64.so.2 (If architecture is x86_64)
+ - ld-linux-riscv64-lp64d.so.1 (If architecture is riscv64)
+ - ld-linux-loongarch-lp64d.so.1 (If architecture is loongarch64)
 
 The excluded dependencies are:
  - Fontconfig</PackageNotes>
@@ -22,17 +24,19 @@ The excluded dependencies are:
     <PackageFile Include="..\..\output\native\linuxnodeps\arm64\libSkiaSharp*.so" PackagePath="runtimes\linux-arm64\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\linuxnodeps\arm\libSkiaSharp*.so" PackagePath="runtimes\linux-arm\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\linuxnodeps\riscv64\libSkiaSharp*.so" PackagePath="runtimes\linux-riscv64\native\%(Filename)%(Extension)" />
+    <PackageFile Include="..\..\output\native\linuxnodeps\loongarch64\libSkiaSharp*.so" PackagePath="runtimes\linux-loongarch64\native\%(Filename)%(Extension)" />
     <!-- Musl -->
     <PackageFile Include="..\..\output\native\alpinenodeps\x64\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-x64\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpinenodeps\x86\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-x86\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpinenodeps\arm64\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-arm64\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpinenodeps\arm\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-arm\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpinenodeps\riscv64\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-riscv64\native\%(Filename)%(Extension)" />
+    <PackageFile Include="..\..\output\native\alpinenodeps\loongarch64\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-loongarch64\native\%(Filename)%(Extension)" />
   </ItemGroup>
   <Target Name="IncludeAdditionalTfmSpecificPackageFiles">
     <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">
       <TfmSpecificPackageFile Include="buildTransitive\net4\SkiaSharp.targets" PackagePath="buildTransitive\$(NuGetShortFolderName)\$(PackageId).targets" />
       <TfmSpecificPackageFile Include="buildTransitive\net4\SkiaSharp.targets" PackagePath="build\$(NuGetShortFolderName)\$(PackageId).targets" />
     </ItemGroup>
   </Target>
-</Project>
+</Project>

binding/SkiaSharp.NativeAssets.Linux.NoDependencies/buildTransitive/net4/SkiaSharp.targets

@@ -25,6 +25,9 @@
         <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-riscv64\native\libSkiaSharp*.so">
             <Dir>riscv64\</Dir>
         </_NativeSkiaSharpFile>
+        <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-loongarch64\native\libSkiaSharp*.so">
+            <Dir>loongarch64\</Dir>
+        </_NativeSkiaSharpFile>
 
         <!-- Musl -->
         <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-musl-x86\native\libSkiaSharp*.so">
@@ -42,6 +45,9 @@
         <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-musl-riscv64\native\libSkiaSharp*.so">
             <Dir>musl-riscv64\</Dir>
         </_NativeSkiaSharpFile>
+        <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-musl-loongarch64\native\libSkiaSharp*.so">
+            <Dir>musl-loongarch64\</Dir>
+        </_NativeSkiaSharpFile>
 
         <!-- include everything -->
         <Content Include="@(_NativeSkiaSharpFile)">
@@ -52,4 +58,4 @@
 
     </ItemGroup>
 
-</Project>
+</Project>

binding/SkiaSharp.NativeAssets.Linux/SkiaSharp.NativeAssets.Linux.csproj

@@ -11,12 +11,14 @@
     <PackageFile Include="..\..\output\native\linux\arm64\libSkiaSharp*.so" PackagePath="runtimes\linux-arm64\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\linux\arm\libSkiaSharp*.so" PackagePath="runtimes\linux-arm\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\linux\riscv64\libSkiaSharp*.so" PackagePath="runtimes\linux-riscv64\native\%(Filename)%(Extension)" />
+    <PackageFile Include="..\..\output\native\linux\loongarch64\libSkiaSharp*.so" PackagePath="runtimes\linux-loongarch64\native\%(Filename)%(Extension)" />
     <!-- Musl -->
     <PackageFile Include="..\..\output\native\alpine\x64\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-x64\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpine\x86\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-x86\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpine\arm64\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-arm64\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpine\arm\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-arm\native\%(Filename)%(Extension)" />
     <PackageFile Include="..\..\output\native\alpine\riscv64\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-riscv64\native\%(Filename)%(Extension)" />
+    <PackageFile Include="..\..\output\native\alpine\loongarch64\libSkiaSharp*.so" PackagePath="runtimes\linux-musl-loongarch64\native\%(Filename)%(Extension)" />
   </ItemGroup>
   <Target Name="IncludeAdditionalTfmSpecificPackageFiles">
     <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">

binding/SkiaSharp.NativeAssets.Linux/buildTransitive/net4/SkiaSharp.targets

@@ -25,6 +25,9 @@
         <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-riscv64\native\libSkiaSharp*.so">
             <Dir>riscv64\</Dir>
         </_NativeSkiaSharpFile>
+        <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-loongarch64\native\libSkiaSharp*.so">
+            <Dir>loongarch64\</Dir>
+        </_NativeSkiaSharpFile>
 
         <!-- Musl -->
         <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-musl-x86\native\libSkiaSharp*.so">
@@ -42,6 +45,9 @@
         <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-musl-riscv64\native\libSkiaSharp*.so">
             <Dir>musl-riscv64\</Dir>
         </_NativeSkiaSharpFile>
+        <_NativeSkiaSharpFile Include="$(MSBuildThisFileDirectory)..\..\runtimes\linux-musl-loongarch64\native\libSkiaSharp*.so">
+            <Dir>musl-loongarch64\</Dir>
+        </_NativeSkiaSharpFile>
 
         <!-- include everything -->
         <Content Include="@(_NativeSkiaSharpFile)">

native/linux-clang-cross/build.cake

@@ -7,15 +7,20 @@ if (BUILD_ARCH.Length == 0)
 
 string GetGnArgs(string arch)
 {
+    var (vendor, abi, sysrootarg, linker) = BUILD_VARIANT switch
+    {
+        "alpine" or "alpinenodeps" => ("-alpine", "musl", "'--sysroot=/alpine', ", "'-fuse-ld=lld'"),
+        _ => ("", "gnu", "", ""),
+    };
     var (toolchainArch, targetArch) = arch switch
     {
-        "arm" => ("arm-linux-gnueabihf", "armv7a-linux-gnueabihf"),
-        "arm64" => ("aarch64-linux-gnu", "aarch64-linux-gnu"),
-        _ => ($"{arch}-linux-gnu", $"{arch}-linux-gnu"),
+        "arm" => ($"arm{vendor}-linux-{abi}eabihf", $"armv7a{vendor}-linux-{abi}eabihf"),
+        "arm64" => ($"aarch64{vendor}-linux-{abi}", $"aarch64{vendor}-linux-{abi}"),
+        _ => ($"{arch}{vendor}-linux-{abi}", $"{arch}{vendor}-linux-{abi}"),
     };
 
     var sysroot = $"/usr/{toolchainArch}";
-    var init = $"'--target={targetArch}'";
+    var init = $"{sysrootarg} '--target={targetArch}'";
     var bin = $"'-B{sysroot}/bin/' ";
     var libs = $"'-L{sysroot}/lib/' ";
     var includes = 
@@ -26,7 +31,7 @@ string GetGnArgs(string arch)
     return
         $"extra_asmflags+=[ {init}, '-no-integrated-as', {bin}, {includes} ] " +
         $"extra_cflags+=[ {init}, {bin}, {includes} ] " +
-        $"extra_ldflags+=[ {init}, {bin}, {libs} ] " +
+        $"extra_ldflags+=[ {init}, {bin}, {libs}, {linker} ] " +
         ADDITIONAL_GN_ARGS;
 }
 
@@ -38,6 +43,7 @@ Task("libSkiaSharp")
         RunCake("../linux/build.cake", "libSkiaSharp", new Dictionary<string, string> {
             { "arch", arch },
             { "gnArgs", GetGnArgs(arch) },
+            { "variant", BUILD_VARIANT },
         });
     }
 });
@@ -50,6 +56,7 @@ Task("libHarfBuzzSharp")
         RunCake("../linux/build.cake", "libHarfBuzzSharp", new Dictionary<string, string> {
             { "arch", arch },
             { "gnArgs", GetGnArgs(arch) },
+            { "variant", BUILD_VARIANT },
         });
     }
 });

scripts/Docker/_clang-cross-common.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+set -ex
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+DOCKER_DIR="$1"
+
+# the target architecture to build for
+ARCH="${2:-arm}"
+
+# the docker image architecture to use
+MACHINE_ARCH="$(uname -m)"
+[ "$MACHINE_ARCH" = "arm64" ] && MACHINE_ARCH=aarch64
+IMAGE_ARCH="${3:-$([[ "$MACHINE_ARCH" == "aarch64" ]] && echo "arm64v8" || echo "amd64")}"
+
+DISTRO_VERSION=$4
+ABI=$5
+VENDOR=$6
+
+case $ARCH in
+  arm)     TOOLCHAIN_ARCH=arm$VENDOR-linux-${ABI}eabihf ; TOOLCHAIN_ARCH_SHORT=armhf   ; TARGET_MACHINE_ARCH=armhf   ;;
+  arm64)   TOOLCHAIN_ARCH=aarch64$VENDOR-linux-$ABI     ; TOOLCHAIN_ARCH_SHORT=arm64   ; TARGET_MACHINE_ARCH=aarch64 ;;
+  loongarch64)   TOOLCHAIN_ARCH=loongarch64$VENDOR-linux-$ABI     ; TOOLCHAIN_ARCH_SHORT=loong64   ; TARGET_MACHINE_ARCH=loongarch64 ;;
+  riscv64) TOOLCHAIN_ARCH=riscv64$VENDOR-linux-$ABI     ; TOOLCHAIN_ARCH_SHORT=riscv64 ; TARGET_MACHINE_ARCH=riscv64 ;;
+  x86)     TOOLCHAIN_ARCH=i686$VENDOR-linux-$ABI        ; TOOLCHAIN_ARCH_SHORT=i386    ; TARGET_MACHINE_ARCH=x86     ;;
+  x64)     TOOLCHAIN_ARCH=x86-64$VENDOR-linux-$ABI      ; TOOLCHAIN_ARCH_SHORT=amd64   ; TARGET_MACHINE_ARCH=x86_64  ;;
+  *) echo "Unsupported architecture: $ARCH" && exit 1 ;;
+esac
+
+(cd $DIR && docker build --tag skiasharp-linux-$ABI-cross-$ARCH \
+    --build-arg TOOLCHAIN_ARCH=$TOOLCHAIN_ARCH                  \
+    --build-arg TOOLCHAIN_ARCH_SHORT=$TOOLCHAIN_ARCH_SHORT      \
+    --build-arg IMAGE_ARCH=$IMAGE_ARCH                          \
+    --build-arg MACHINE_ARCH=$MACHINE_ARCH                      \
+    --build-arg TARGET_MACHINE_ARCH=$TARGET_MACHINE_ARCH        \
+    --build-arg DISTRO_VERSION=$DISTRO_VERSION                  \
+    $DOCKER_DIR)
+
+if [ "$VENDOR" = "-alpine" ]; then vendor=alpine; fi
+
+(cd $DIR/../.. && 
+    docker run --rm --name skiasharp-linux-$ABI-cross-$ARCH --volume $(pwd):/work skiasharp-linux-$ABI-cross-$ARCH /bin/bash -c "\
+        dotnet tool restore &&
+        dotnet cake --target=externals-linux-clang-cross --configuration=Release --buildarch=$ARCH --variant=$vendor")

scripts/Docker/alpine/clang-cross/.dockerignore

@@ -0,0 +1 @@
+build-local.sh

scripts/Docker/alpine/clang-cross/Dockerfile

@@ -0,0 +1,51 @@
+# Arguments:
+#   IMAGE_ARCH           - the architecture of the image                    [ amd64 | arm64v8 | riscv64 | loongarch64 ]
+#   DOTNET_SDK_VERSION   - the version of dotnet for the Cake script        [ 9.0 | * ]
+#   TOOLCHAIN_VERSION    - the version of the GCC toolchain                 [ 14 | * ]
+#   TOOLCHAIN_ARCH       - the architecture of the GCC toolchain            [ arm-alpine-linux-musleabihf | aarch64-alpine-linux-musl | riscv64-alpine-linux-musl | loongarch64-alpine-linux-musl ]
+#   TOOLCHAIN_ARCH_SHORT - the short form architecture of the GCC toolchain [ armhf | arm64 | loong64 ]
+#   FONTCONFIG_VERSION   - the exact version of libfontconfig1 to use       [ 2.13.1-2 | * ]
+
+ARG IMAGE_ARCH=amd64
+FROM ${IMAGE_ARCH}/debian:12
+
+# Install the required packages
+RUN apt-get update \
+    && apt-get install -y \
+        curl python3 git clang-19 lld-19 ninja-build xz-utils curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install the cross-compilation musl toolchain
+ARG DISTRO_VERSION=3.21
+ARG TOOLCHAIN_ARCH_SHORT=loong64
+ARG MACHINE_ARCH=x86_64
+ARG TARGET_MACHINE_ARCH=loongarch64
+
+# obtain apk.static from gitlab.alpinelinux.org/alpine/apk-tools/-/releases/v2.14.6
+# apk.static for loongarch64 can be download in http://dl-cdn.alpinelinux.org/alpine/v3.21/main/loongarch64/apk-tools-static-2.14.6-r3.apk.
+RUN APK_DIR="$(mktemp -d)" && \
+    curl -SLO --create-dirs --output-dir "$APK_DIR" "https://gitlab.alpinelinux.org/api/v4/projects/5/packages/generic/v2.14.6/$MACHINE_ARCH/apk.static" && \
+    chmod +x "$APK_DIR/apk.static" && \
+    "$APK_DIR/apk.static" \
+        -X "http://dl-cdn.alpinelinux.org/alpine/v$DISTRO_VERSION/main" \
+        -X "http://dl-cdn.alpinelinux.org/alpine/v$DISTRO_VERSION/community" \
+        -U --allow-untrusted --root /alpine --arch "$TARGET_MACHINE_ARCH" --initdb add && \
+    "$APK_DIR/apk.static" \
+        -X "http://dl-cdn.alpinelinux.org/alpine/v$DISTRO_VERSION/main" \
+        -X "http://dl-cdn.alpinelinux.org/alpine/v$DISTRO_VERSION/community" \
+        -U --allow-untrusted --root /alpine --arch "$TARGET_MACHINE_ARCH" --no-scripts \
+        add fontconfig-dev build-base linux-headers
+
+# Install the .NET SDK
+ARG DOTNET_SDK_VERSION=9.0
+ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT 1
+RUN curl https://dot.net/v1/dotnet-install.sh -L -o dotnet-install.sh \
+    && bash dotnet-install.sh --channel ${DOTNET_SDK_VERSION} --install-dir /usr/share/dotnet --verbose \
+    && ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet \
+    && rm dotnet-install.sh \
+    && dotnet help \
+    && dotnet --info
+
+ENV CC=clang-19 CXX=clang++-19
+
+WORKDIR /work

scripts/Docker/alpine/clang-cross/build-local.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -ex
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+ARCH=$1
+ALPINE_VERSION=$3
+if [ -z "$ALPINE_VERSION" ]; then
+  case $ARCH in
+    loongarch64) ALPINE_VERSION=3.21 ;;
+    riscv64) ALPINE_VERSION=3.20 ;;
+    *) ALPINE_VERSION=3.17       ;;
+  esac
+fi
+
+$DIR/../../_clang-cross-common.sh "$DIR" "$ARCH" "$2" "$ALPINE_VERSION" "musl" "-alpine"

scripts/Docker/debian/clang-cross/13/Dockerfile

@@ -0,0 +1,64 @@
+# Arguments:
+#   IMAGE_ARCH           - the architecture of the image                    [ amd64 | arm64v8 | riscv64 | loongarch64 ]
+#   DOTNET_SDK_VERSION   - the version of dotnet for the Cake script        [ 9.0 | * ]
+#   TOOLCHAIN_VERSION    - the version of the GCC toolchain                 [ 14 | * ]
+#   TOOLCHAIN_ARCH       - the architecture of the GCC toolchain            [ arm-linux-gnueabihf | aarch64-linux-gnu | riscv64-linux-gnu | loongarch64-linux-gnu ]
+#   TOOLCHAIN_ARCH_SHORT - the short form architecture of the GCC toolchain [ armhf | arm64 | loong64 ]
+#   FONTCONFIG_VERSION   - the exact version of libfontconfig1 to use       [ 2.15.0-1 | * ]
+
+ARG IMAGE_ARCH=amd64
+FROM ${IMAGE_ARCH}/debian:12
+
+# Install the required packages (needs to add ftp.debian.org source)
+RUN apt-get update \
+    && apt-get install -y \
+        curl python3 git clang-19 ninja-build xz-utils \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install the cross-compilation GCC toolchain (loongarch64 use GCC cross ports)
+ARG TOOLCHAIN_VERSION=14
+ARG TOOLCHAIN_ARCH=loongarch64-linux-gnu
+ARG TOOLCHAIN_ARCH_SHORT=loong64
+RUN apt-get update \
+    && apt-get install -y \
+       libstdc++-${TOOLCHAIN_VERSION}-dev-${TOOLCHAIN_ARCH_SHORT}-cross \
+       libgcc-${TOOLCHAIN_VERSION}-dev-${TOOLCHAIN_ARCH_SHORT}-cross \
+       binutils-${TOOLCHAIN_ARCH} \
+    && rm -rf /var/lib/apt/lists/*
+
+# Make the script more flexible and use "current" instead of the actual version
+RUN ln -s /usr/${TOOLCHAIN_ARCH}/include/c++/${TOOLCHAIN_VERSION} /usr/${TOOLCHAIN_ARCH}/include/c++/current \
+    && sed -i "s/\/usr\/${TOOLCHAIN_ARCH}\/lib\///g" /usr/${TOOLCHAIN_ARCH}/lib/libpthread.so || true \
+    && sed -i "s/\/usr\/${TOOLCHAIN_ARCH}\/lib\///g" /usr/${TOOLCHAIN_ARCH}/lib/libc.so
+
+# Install the cross-compilation skia build dependencies (fontconfig)
+ARG FONTCONFIG_VERSION=2.15.0-1.1
+RUN (mkdir -p /skia-utils/libfontconfig1-dev \
+    && cd /skia-utils/libfontconfig1-dev \
+    && curl https://pkg.loongnix.cn/loongnix/25/pool/main/f/fontconfig/libfontconfig-dev_${FONTCONFIG_VERSION}_${TOOLCHAIN_ARCH_SHORT}.deb -L -o libfontconfig1-dev.deb \
+    && ar vx libfontconfig1-dev.deb \
+    && tar -xJvf data.tar.xz \
+    && rm libfontconfig1-dev.deb \
+    && cp -R usr/lib/*/* /usr/${TOOLCHAIN_ARCH}/lib/ \
+    && cp -R usr/include/* /usr/${TOOLCHAIN_ARCH}/include/ )
+RUN (mkdir -p /skia-utils/libfontconfig1 \
+    && cd /skia-utils/libfontconfig1 \
+    && curl https://pkg.loongnix.cn/loongnix/25/pool/main/f/fontconfig/libfontconfig1_${FONTCONFIG_VERSION}_${TOOLCHAIN_ARCH_SHORT}.deb -L -o libfontconfig1.deb \
+    && ar vx libfontconfig1.deb \
+    && tar -xJvf data.tar.xz \
+    && rm libfontconfig1.deb \
+    && cp -R usr/lib/*/* /usr/${TOOLCHAIN_ARCH}/lib/ )
+
+# Install the .NET SDK
+ARG DOTNET_SDK_VERSION=9.0
+ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT 1
+RUN curl https://dot.net/v1/dotnet-install.sh -L -o dotnet-install.sh \
+    && bash dotnet-install.sh --channel ${DOTNET_SDK_VERSION} --install-dir /usr/share/dotnet --verbose \
+    && ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet \
+    && rm dotnet-install.sh \
+    && dotnet help \
+    && dotnet --info
+
+ENV CC=clang-19 CXX=clang++-19
+
+WORKDIR /work