kristoffer-paulsson / kotlin-monorepo-gradle-multiproject-jni-cinterop

Example of C interop and JNI side by side in a mono repo multi project setup with Kotlin/Multiplatform.

Kotlin Monorepo Gradle Multiproject JNI cinterop

A living example of Kotlin/Multiplatform with Java JNI integration and cinterop native integration.

NOTE: for Windows use

Kotlin/Multiplatform doesn't run well with Visual C++.

Therefore Windows users need to download and setup either Cygwin or MSYS2, here comes a brief instruction on how to setup MSYS2 with GIT, OpenJDK and Gradle.

This brief instruction does not tell how to make Intellij IDEA work internally with MSYS2.

1. Download the Microsoft build of OpenJDK and install to C:\Users\Forename Surname\.jdks

   Presumably microsoft-jdk-16.0.2.7.1-windows-x64.

2. Download MSYS2 and install on your Windows computer.

3. Then open MSYS2 MinGW x64 from your start menu. From within the MSYS2 Terminal, do the following:

   1. Install Git pacman -S git.
   2. Install Gradle pacman -S gradle.
   3. Install a toolchain pacman -S mingw-w64-x86_64-toolchain.
   4. Go to your KMP project folder cd /c/Users/Forename\ Surname/IdeaProjects/kotlin-monorepo-gradle-multiproject-jni-cinterop/.
   5. Create the JAVA_HOME environment variable for Gradle export JAVA_HOME="C:\Users\Forename Surname\.jdks\openjdk-16+36_windows-x64_bin\jdk-16"
   6. Run Gradle commands ./gradlew <command>.