Building LLVM for Android

This repository contains scripts and instructions for cross-compiling LLVM for use on Android Devices.

Note

Cross-compiling LLVM requires at a minimum that llvm-tblgen be compiled for the Host Machine. The build_llvm_host.ps1 attempts to build the minimum binaries necessary to successfully compile llvm-tblgen for the Host Machine to be used in our Cross-compilation. That script can be modified to build larger parts of the LLVM Codebase if necessary.

Requirements

• CMake - https://cmake.org/download/
• Visual Studio 2019 -or- MSVC Toolchain
• MinGW Bash Prompt - http://www.mingw.org/

Steps

• Download latest release of LLVM Source Code from http://releases.llvm.org/
• Open the LLVM Source Code Archive and extract the contents (not the actual folder) of the 'llvm-x.x.x.src' to /llvm-src/
• Execute the build_llvm_host.ps1 script via PowerShell
• Execute the build_llvm_android.sh script via Bash Prompt
• Resulting files are in /llvm-build-android/