Add Windows native BLAS support (UCRT64 JNI DLL + CI)

.github/workflows/build-and-test.yml

@@ -35,10 +35,47 @@ jobs:
           */target/native/macos-*/
         if-no-files-found: error
 
+  build-windows-natives:
+    name: "Build: Windows Natives"
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Cache M2 local repository
+      uses: actions/cache@v4
+      with:
+        path: ~/.m2/repository
+        key: m2
+    - name: Set up JDK 25
+      uses: actions/setup-java@v4
+      with:
+        java-version: 25
+        distribution: temurin
+    - name: Set up MSYS2 (UCRT64)
+      uses: msys2/setup-msys2@v2
+      with:
+        msystem: UCRT64
+        update: false
+        install: >-
+          mingw-w64-ucrt-x86_64-gcc
+          mingw-w64-ucrt-x86_64-dlfcn
+          make
+    - name: Add MSYS2 UCRT64 to PATH
+      shell: msys2 {0}
+      run: echo "$(cygpath -w /ucrt64/bin)" >> $GITHUB_PATH
+    - name: Build
+      run: mvn --batch-mode --no-transfer-progress compile
+    - name: Upload Windows natives
+      uses: actions/upload-artifact@v4
+      with:
+        name: windows-natives
+        path: |
+          */target/native/windows-*/
+        if-no-files-found: error
+
   build-jar:
     name: "Build: Packaging JARs"
     runs-on: ubuntu-latest
-    needs: [build-macos-natives]
+    needs: [build-macos-natives, build-windows-natives]
     steps:
     - uses: actions/checkout@v4
     - name: Cache M2 local repository
@@ -60,6 +97,11 @@ jobs:
       with:
         name: macos-natives
         path: .
+    - name: Download Windows natives
+      uses: actions/download-artifact@v4
+      with:
+        name: windows-natives
+        path: .
     - name: Build
       run: mvn --batch-mode --no-transfer-progress package -DskipTests
     - name: Log content of jar files
@@ -137,3 +179,39 @@ jobs:
         distribution: temurin
     - name: Test
       run: mvn --batch-mode --no-transfer-progress --projects test-utils,blas,lapack,arpack test --fail-at-end -Dmaven.main.skip=true -Dmaven.antrun.skip=true
+
+  test-windows:
+    name: "Test: runs-on: windows-latest, jdk: ${{ matrix.jdk }}"
+    runs-on: windows-latest
+    needs: [build-jar]
+    strategy:
+      matrix:
+        jdk: [11, 17, 21, 25]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Cache M2 local repository
+      uses: actions/cache@v4
+      with:
+        path: ~/.m2/repository
+        key: m2
+    - name: Set up MSYS2 (UCRT64) with OpenBLAS
+      uses: msys2/setup-msys2@v2
+      with:
+        msystem: UCRT64
+        update: false
+        install: mingw-w64-ucrt-x86_64-openblas
+    - name: Add MSYS2 ucrt64 bin to PATH
+      shell: msys2 {0}
+      run: echo "$(cygpath -w /ucrt64/bin)" >> $GITHUB_PATH
+    - name: Download target folder
+      uses: actions/download-artifact@v4
+      with:
+        name: target-dir
+        path: .
+    - name: Set up JDK ${{ matrix.jdk }}
+      uses: actions/setup-java@v4
+      with:
+        java-version: ${{ matrix.jdk }}
+        distribution: temurin
+    - name: Test
+      run: mvn --batch-mode --no-transfer-progress --projects test-utils,blas test --fail-at-end "-Dmaven.main.skip=true" "-Dmaven.antrun.skip=true" "-Ddev.ludovic.netlib.blas.nativeLib=libopenblas.dll"

.github/workflows/release.yml

@@ -35,10 +35,47 @@ jobs:
           */target/native/macos-*/
         if-no-files-found: error
 
+  build-windows-natives:
+    name: "Build: Windows Natives"
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Cache M2 local repository
+      uses: actions/cache@v4
+      with:
+        path: ~/.m2/repository
+        key: m2
+    - name: Set up JDK 25
+      uses: actions/setup-java@v4
+      with:
+        java-version: 25
+        distribution: temurin
+    - name: Set up MSYS2 (UCRT64)
+      uses: msys2/setup-msys2@v2
+      with:
+        msystem: UCRT64
+        update: false
+        install: >-
+          mingw-w64-ucrt-x86_64-gcc
+          mingw-w64-ucrt-x86_64-dlfcn
+          make
+    - name: Add MSYS2 UCRT64 to PATH
+      shell: msys2 {0}
+      run: echo "$(cygpath -w /ucrt64/bin)" >> $GITHUB_PATH
+    - name: Build
+      run: mvn --batch-mode --no-transfer-progress compile
+    - name: Upload Windows natives
+      uses: actions/upload-artifact@v4
+      with:
+        name: windows-natives
+        path: |
+          */target/native/windows-*/
+        if-no-files-found: error
+
   build-jar:
     name: "Build: Packaging JARs"
     runs-on: ubuntu-latest
-    needs: [build-macos-natives]
+    needs: [build-macos-natives, build-windows-natives]
     steps:
     - uses: actions/checkout@v4
     - name: Cache M2 local repository
@@ -60,6 +97,11 @@ jobs:
       with:
         name: macos-natives
         path: .
+    - name: Download Windows natives
+      uses: actions/download-artifact@v4
+      with:
+        name: windows-natives
+        path: .
     - name: Build
       run: mvn --batch-mode --no-transfer-progress package -DskipTests
     - name: Log content of jar files
@@ -138,10 +180,46 @@ jobs:
     - name: Test
       run: mvn --batch-mode --no-transfer-progress --projects test-utils,blas,lapack,arpack test --fail-at-end -Dmaven.main.skip=true -Dmaven.antrun.skip=true
 
+  test-windows:
+    name: "Test: runs-on: windows-latest, jdk: ${{ matrix.jdk }}"
+    runs-on: windows-latest
+    needs: [build-jar]
+    strategy:
+      matrix:
+        jdk: [11, 17, 21, 25]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Cache M2 local repository
+      uses: actions/cache@v4
+      with:
+        path: ~/.m2/repository
+        key: m2
+    - name: Set up MSYS2 (UCRT64) with OpenBLAS
+      uses: msys2/setup-msys2@v2
+      with:
+        msystem: UCRT64
+        update: false
+        install: mingw-w64-ucrt-x86_64-openblas
+    - name: Add MSYS2 ucrt64 bin to PATH
+      shell: msys2 {0}
+      run: echo "$(cygpath -w /ucrt64/bin)" >> $GITHUB_PATH
+    - name: Download target folder
+      uses: actions/download-artifact@v4
+      with:
+        name: target-dir
+        path: .
+    - name: Set up JDK ${{ matrix.jdk }}
+      uses: actions/setup-java@v4
+      with:
+        java-version: ${{ matrix.jdk }}
+        distribution: temurin
+    - name: Test
+      run: mvn --batch-mode --no-transfer-progress --projects test-utils,blas test --fail-at-end "-Dmaven.main.skip=true" "-Dmaven.antrun.skip=true" "-Ddev.ludovic.netlib.blas.nativeLib=libopenblas.dll"
+
   release:
     name: Release
     runs-on: ubuntu-latest
-    needs: [build-jar, test-linux, test-macos]
+    needs: [build-jar, test-linux, test-macos, test-windows]
     # Map step output to job output
     outputs:
       release_upload_url: ${{ steps.create_release.outputs.upload_url  }}

arpack/src/main/java/dev/ludovic/netlib/arpack/JNIARPACK.java

@@ -28,9 +28,11 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.UncheckedIOException;
+import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
+import java.nio.file.attribute.FileAttribute;
 import java.nio.file.attribute.PosixFilePermissions;
 
 final class JNIARPACK extends AbstractARPACK implements NativeARPACK {
@@ -42,24 +44,31 @@ protected JNIARPACK() {
     if (osName == null || osName.isEmpty()) {
         throw new RuntimeException("Unable to load native implementation");
     }
+    boolean isWindows = osName.startsWith("Windows");
     if (osName.equals("Mac OS X")) {
         osName = "macos";
+    } else if (isWindows) {
+        osName = "windows";
     }
     String osArch = System.getProperty("os.arch");
     if (osArch == null || osArch.isEmpty()) {
         throw new RuntimeException("Unable to load native implementation");
     }
 
     String libPrefix = "libnetlibarpackjni";
-    String libExtension = osName.equals("macos") ? ".dylib" : ".so";
+    String libExtension = osName.equals("macos") ? ".dylib" : isWindows ? ".dll" : ".so";
     String libName = libPrefix + libExtension;
 
+    FileAttribute<?>[] attrs = FileSystems.getDefault()
+        .supportedFileAttributeViews().contains("posix")
+        ? new FileAttribute<?>[]{ PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---")) }
+        : new FileAttribute<?>[0];
+
     Path temp;
     try (InputStream resource = this.getClass().getClassLoader().getResourceAsStream(
             String.format("resources/native/%s-%s/%s", osName, osArch, libName))) {
       assert resource != null;
-      Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension,
-                                    PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---"))),
+      Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension, attrs),
                   StandardCopyOption.REPLACE_EXISTING);
       temp.toFile().deleteOnExit();
     } catch (IOException e) {

arpack/src/main/native/jni.c

@@ -26,7 +26,17 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <dlfcn.h>
+#ifdef _WIN32
+#  include <windows.h>
+#  define dlopen(name, flags)  ((void*)LoadLibraryA(name))
+#  define dlsym(h, name)       ((void*)GetProcAddress((HMODULE)(h), name))
+#  define dlclose(h)           FreeLibrary((HMODULE)(h))
+#  define dlerror()            "LoadLibrary failed"
+#  define RTLD_LAZY   0
+#  define RTLD_LOCAL  0
+#else
+#  include <dlfcn.h>
+#endif
 
 #include "dev_ludovic_netlib_arpack_JNIARPACK.h"
 

blas/src/main/java/dev/ludovic/netlib/blas/JNIBLAS.java

@@ -28,9 +28,11 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.UncheckedIOException;
+import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
+import java.nio.file.attribute.FileAttribute;
 import java.nio.file.attribute.PosixFilePermissions;
 import java.util.logging.Logger;
 
@@ -45,27 +47,32 @@ protected JNIBLAS() {
     if (osName == null || osName.isEmpty()) {
         throw new RuntimeException("Unable to load native implementation");
     }
+    boolean isWindows = osName.startsWith("Windows");
     if (osName.equals("Mac OS X")) {
         osName = "macos";
+    } else if (isWindows) {
+        osName = "windows";
     }
     String osArch = System.getProperty("os.arch");
     if (osArch == null || osArch.isEmpty()) {
         throw new RuntimeException("Unable to load native implementation");
     }
 
     String libPrefix = "libnetlibblasjni";
-    String libExtension = osName.equals("macos") ? ".dylib" : ".so";
+    String libExtension = osName.equals("macos") ? ".dylib" : isWindows ? ".dll" : ".so";
     String libName = libPrefix + libExtension;
 
     log.fine(String.format("Trying to load native implementation from resource: resources/native/%s-%s/%s", osName, osArch, libName));
+    FileAttribute<?>[] attrs = FileSystems.getDefault()
+     .supportedFileAttributeViews().contains("posix")
+     ? new FileAttribute<?>[]{ PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---")) }
+     : new FileAttribute<?>[0];
 
     Path temp;
     try (InputStream resource = this.getClass().getClassLoader().getResourceAsStream(
             String.format("resources/native/%s-%s/%s", osName, osArch, libName))) {
       assert resource != null;
-      Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension,
-                                    PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---"))),
-                  StandardCopyOption.REPLACE_EXISTING);
+      Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension, attrs), StandardCopyOption.REPLACE_EXISTING);
       temp.toFile().deleteOnExit();
     } catch (IOException e) {
       throw new UncheckedIOException("Unable to load native implementation", e);

blas/src/main/native/jni.c

@@ -26,7 +26,17 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <dlfcn.h>
+#ifdef _WIN32
+#  include <windows.h>
+#  define dlopen(name, flags)  ((void*)LoadLibraryA(name))
+#  define dlsym(h, name)       ((void*)GetProcAddress((HMODULE)(h), name))
+#  define dlclose(h)           FreeLibrary((HMODULE)(h))
+#  define dlerror()            "LoadLibrary failed"
+#  define RTLD_LAZY   0
+#  define RTLD_LOCAL  0
+#else
+#  include <dlfcn.h>
+#endif
 
 #include "dev_ludovic_netlib_blas_JNIBLAS.h"
 

lapack/src/main/java/dev/ludovic/netlib/lapack/JNILAPACK.java

@@ -28,9 +28,11 @@
 import java.io.InputStream;
 import java.io.UncheckedIOException;
 import java.io.IOException;
+import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
+import java.nio.file.attribute.FileAttribute;
 import java.nio.file.attribute.PosixFilePermissions;
 
 final class JNILAPACK extends AbstractLAPACK implements NativeLAPACK {
@@ -42,24 +44,31 @@ protected JNILAPACK() {
     if (osName == null || osName.isEmpty()) {
         throw new RuntimeException("Unable to load native implementation");
     }
+    boolean isWindows = osName.startsWith("Windows");
     if (osName.equals("Mac OS X")) {
         osName = "macos";
+    } else if (isWindows) {
+        osName = "windows";
     }
     String osArch = System.getProperty("os.arch");
     if (osArch == null || osArch.isEmpty()) {
         throw new RuntimeException("Unable to load native implementation");
     }
 
     String libPrefix = "libnetliblapackjni";
-    String libExtension = osName.equals("macos") ? ".dylib" : ".so";
+    String libExtension = osName.equals("macos") ? ".dylib" : isWindows ? ".dll" : ".so";
     String libName = libPrefix + libExtension;
 
+    FileAttribute<?>[] attrs = FileSystems.getDefault()
+        .supportedFileAttributeViews().contains("posix")
+        ? new FileAttribute<?>[]{ PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---")) }
+        : new FileAttribute<?>[0];
+
     Path temp;
     try (InputStream resource = this.getClass().getClassLoader().getResourceAsStream(
             String.format("resources/native/%s-%s/%s", osName, osArch, libName))) {
       assert resource != null;
-      Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension,
-                                    PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---"))),
+      Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension, attrs),
                   StandardCopyOption.REPLACE_EXISTING);
       temp.toFile().deleteOnExit();
     } catch (IOException e) {