Welcome to the JDK!

For build instructions please see the online documentation, or either of these files:

• doc/building.html (html version)
• doc/building.md (markdown version)

See https://openjdk.org/ for more information about the OpenJDK Community and the JDK and see https://bugs.openjdk.org for JDK issue tracking.

Build static image for iOS

Note

Follow the instructions in building.md to make sure you can build the JDK targeting macOS before trying to build for iOS

Pre-requisites

Following are the prerequisites to build JDK on Mac targeting iOS:

1. Download and unzip pre-built JDK24 to be used as boot JDK
2. Download the support zip which contains an ios build for libffi and cups. Unzip it in the root directory of the project.
3. Install autoconf on mac via homebrew: brew install autoconf

Clone the mobile repository

Clone the openjdk/mobile repository. The following command can be used:

git clone [email protected]:openjdk/mobile.git

Configure

Modify the configure script below so that it has the correct paths to your JDK24 directory, the unzipped 'support' directory, and the correct location of the iPhoneOS.platform.

sh configure \
--with-conf-name=zero-ios-aarch64 \
--disable-warnings-as-errors \
--openjdk-target=aarch64-macos-ios \
--with-boot-jdk=/Users/abhinay/.sdkman/candidates/java/24.ea.29-open \
--with-jvm-variants=zero \
--with-libffi-include=<support-dir-absolute-path>/libffi/include \
--with-libffi-lib=<support-dir-absolute-path>/libffi/libs \
--with-cups-include=<support-dir-absolute-path>/cups-2.3.6
--with-sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk \

Build static image

Execute the make command:

make CONF=zero-ios-aarch64 static-libs-image

Once the build is successful, it should have created a directory in build/zero-ios-aarch64/images/static-libs/lib/zero with a file libjvm.a.