BEWARE: This project hasn't been maintained since 2015. An effort to refresh it (and JNAerator) is ongoing (Nov 2022) and 0.8.0-SNAPSHOT contains a sneak peek of it, with no guarantees.
BridJ is a Java / native interoperability library that focuses on speed and ease of use.
It is similar in spirit to JNA (dynamic bindings that don't require any native compilation, unlike JNI), but was designed to support C++, to be blazing fast (thanks to dyncall + hand-optimized assembly tweaks) and to use modern Java features.
A comprehensive documentation is available on its Wiki.
It was previously hosted on ochafik/nativelibs4java.
Note: the Wiki is being refreshed.
Examples/BasicExample)git clone http://github.com/nativelibs4java/BridJ.git cd BridJ mvn clean install
Iterate on native code:
mvn native:javah ./BuildNative && mvn surefire:test
Assuming you have docker:
# One-off to let Docker use QEMU to run exotic architectures.
docker run --rm --privileged multiarch/qemu-user-static --reset -p yes --credential yes
# Install the cross-compiler for Windows
# sudo apt install mingw-w64
brew install mingw-w64
# https://jdk.java.net/archive/
# Get JDK for Mac ARM64 & X64
wget https://download.java.net/java/GA/jdk19/877d6127e982470ba2a7faa31cc93d04/36/GPL/openjdk-19_macos-{x64,aarch64}_bin.tar.gz && \
tar zxvf openjdk-19_macos-aarch64_bin.tar.gz && mv jdk-19.jdk{,-darwin_arm64} && \
tar zxvf openjdk-19_macos-x64_bin.tar.gz && mv jdk-19.jdk{,-darwin_x64} \
# Get JDK for Windows X64
wget https://download.java.net/java/GA/jdk19/877d6127e982470ba2a7faa31cc93d04/36/GPL/openjdk-19_windows-x64_bin.zip && \
unzip openjdk-19_windows-x64_bin.zip && mv jdk-19{,-windows_x64}
# Get JDK for Windows ARM64
wget https://github.com/microsoft/openjdk-aarch64/releases/download/jdk-16.0.2-ga/microsoft-jdk-16.0.2.7.1-linux-aarch64.tar.gz && \
tar zxvf microsoft-jdk-16.0.2.7.1-linux-aarch64.tar.gz && mv jdk-16.0.2+7{,-windows_arm64}
wget https://builds.openlogic.com/downloadJDK/openlogic-openjdk/8u352-b08/openlogic-openjdk-8u352-b08-windows-x32.zip && \
unzip openlogic-openjdk-8u352-b08-windows-x32.zip && mv openlogic-openjdk-8u352-b08-windows-32/ jdk-8u352-b09-windows_x86
# Mac host: build Mac M1 & Intel binaries
ARCH=x64 ./BuildNative -DFORCE_JAVA_HOME=$PWD/../jdk-19.jdk-darwin_x64/Contents/Home
ARCH=arm64 ./BuildNative -DFORCE_JAVA_HOME=$PWD/../jdk-19.jdk-darwin_arm64/Contents/Home
# Mac or Linux host: build Windows X64 & X86 binaries w/ MinGW-w64
OS=windows ARCH=x64 ./BuildNative \
-DCMAKE_TOOLCHAIN_FILE=$PWD/mingw-w64-x86_64.cmake \
-DFORCE_JAVA_HOME=$PWD/../jdk-19-windows_x64
OS=windows ARCH=x86 ./BuildNative \
-DCMAKE_TOOLCHAIN_FILE=$PWD/mingw-w64-i686.cmake \
-DFORCE_JAVA_HOME=$PWD/../jdk-8u352-b09-windows_x86
# Mac or Linux host: build & test Linux x86, x64, arm64, arm binaries inside Docker + QEMU:
# TODO: look at armel situation (no openjdk?)
./scripts/build-docker-qemu.sh linux/x86_64 debian:bullseye-slim bridj-linux-x64
ARCH=x86 ./scripts/build-docker-qemu.sh linux/i386 i386/debian:bullseye-slim bridj-linux-x86
./scripts/build-docker-qemu.sh linux/arm64 arm64v8/debian:bullseye-slim bridj-linux-arm64
./scripts/build-docker-qemu.sh linux/arm/v7 arm32v7/debian:bullseye-slim bridj-linux-arm
./scripts/build-docker-qemu.sh linux/ppc64le ppc64le/debian:bullseye-slim bridj-linux-ppc64le
# ./scripts/build-docker-qemu.sh linux/arm/v6 balenalib/rpi-raspbian:bullseye bridj-linux-armel
# Windows x64 host (UNTESTED): build Windows X64 & ARM64 binary
ARCH=x64 ./BuildNative
ARCH=arm64 ./BuildNative -DFORCE_JAVA_HOME=$PWD/../jdk-16.0.2+7-windows_arm64
mvn dependency:build-classpath -DincludeScope=test -Dmdep.outputFile=deps-classpath-test.txt DEBUG=1 mvn clean test-compile # Or gdb --args java ... lldb -- java -cp \ target/generated-resources:target/generated-test-resources:target/test-classes:target/classes:$( cat deps-classpath-test.txt ) \ org.junit.runner.JUnitCore \ org.bridj.BridJTest
Please use the mailing-list and file bugs.
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