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README.md

Ledger Core Library

Core library which will be used by Ledger applications.

Clone project

git clone --recurse-submodules https://github.com/LedgerHQ/lib-ledger-core.git

Dependencies

Build

This project is based on cmake as a build system so you should install it before starting (at least version 3.7).

External dependencies:

  • Qt5 is needed to build tests of the library.
  • Generation of binding is automated with Djinni.
  • Build on multiple Operating Systems is based on polly toolchains.

Build of C++ library

cmake is building out of source, you should create a build directory (e.g. lib-ledger-core-build):

.                           # Directory where clone command was launched
├── lib-ledger-core         # Source files directory
├── lib-ledger-core-build   # Build directory

If you respect this folder structure (and naming), after cd lib-ledger-core-build, you can build the library by running:

cmake -DCMAKE_INSTALL_PREFIX=/path/to/qt5 ../lib-ledger-core && make

Building for JNI

Building with JNI (Java Native Interface), allows you to use the library with Java based software. In order to enable JNI mode use

cmake -DTARGET_JNI=ON

This will add JNI files to the library compilation and remove tests. You need at least a JDK 7 to build for JNI (OpenJDK or Oracle JDK)

Binding to node JS

Generate binding (under build/Release/ledgerapp_nodejs.node):

npm i

Test NodeJs

node ledger-core-samples/nodejs/tests/wallet-pool-test.js

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