### Usage To build dependencies for the current arch+OS: make To build for another arch/OS: make HOST=host-platform-triplet For example: make HOST=x86_64-w64-mingw32 -j4 **Litecoin Core's configure script by default will ignore the depends output.** In order for it to pick up libraries, tools, and settings from the depends build, you must point it at the appropriate `--prefix` directory generated by the build. In the above example, a prefix dir named x86_64-w64-mingw32 will be created. To use it for Litecoin: ./configure --prefix=$PWD/depends/x86_64-w64-mingw32 Common `host-platform-triplets` for cross compilation are: - `i686-pc-linux-gnu` for Linux 32 bit - `x86_64-pc-linux-gnu` for x86 Linux - `x86_64-w64-mingw32` for Win64 - `x86_64-apple-darwin18` for macOS - `arm-linux-gnueabihf` for Linux ARM 32 bit - `aarch64-linux-gnu` for Linux ARM 64 bit - `powerpc64-linux-gnu` for Linux POWER 64-bit (big endian) - `powerpc64le-linux-gnu` for Linux POWER 64-bit (little endian) - `riscv32-linux-gnu` for Linux RISC-V 32 bit - `riscv64-linux-gnu` for Linux RISC-V 64 bit - `s390x-linux-gnu` for Linux S390X - `armv7a-linux-android` for Android ARM 32 bit - `aarch64-linux-android` for Android ARM 64 bit - `i686-linux-android` for Android x86 32 bit - `x86_64-linux-android` for Android x86 64 bit The paths are automatically configured and no other options are needed unless targeting [Android](#Android). ### Install the required dependencies: Ubuntu & Debian #### For macOS cross compilation sudo apt-get install curl librsvg2-bin libtiff-tools bsdmainutils cmake imagemagick libcap-dev libz-dev libbz2-dev python3-setuptools libtinfo5 #### For Win64 cross compilation - see [build-windows.md](../doc/build-windows.md#cross-compilation-for-ubuntu-and-windows-subsystem-for-linux) #### For linux (including i386, ARM) cross compilation Common linux dependencies: sudo apt-get install make automake cmake curl g++-multilib libtool binutils-gold bsdmainutils pkg-config python3 patch For linux ARM cross compilation: sudo apt-get install g++-arm-linux-gnueabihf binutils-arm-linux-gnueabihf For linux AARCH64 cross compilation: sudo apt-get install g++-aarch64-linux-gnu binutils-aarch64-linux-gnu For linux POWER 64-bit cross compilation (there are no packages for 32-bit): sudo apt-get install g++-powerpc64-linux-gnu binutils-powerpc64-linux-gnu g++-powerpc64le-linux-gnu binutils-powerpc64le-linux-gnu For linux RISC-V 64-bit cross compilation (there are no packages for 32-bit): sudo apt-get install g++-riscv64-linux-gnu binutils-riscv64-linux-gnu RISC-V known issue: gcc-7.3.0 and gcc-7.3.1 result in a broken `test_bitcoin` executable (see https://github.com/bitcoin/bitcoin/pull/13543), this is apparently fixed in gcc-8.1.0. For linux S390X cross compilation: sudo apt-get install g++-s390x-linux-gnu binutils-s390x-linux-gnu ### Dependency Options The following can be set when running make: `make FOO=bar`
SOURCES_PATH
downloaded sources will be placed here
BASE_CACHE
built packages will be placed here
SDK_PATH
Path where sdk's can be found (used by macOS)
FALLBACK_DOWNLOAD_PATH
If a source file can't be fetched, try here before giving up
NO_QT
Don't download/build/cache qt and its dependencies
NO_QR
Don't download/build/cache packages needed for enabling qrencode
NO_ZMQ
Don't download/build/cache packages needed for enabling zeromq
NO_WALLET
Don't download/build/cache libs needed to enable the wallet
NO_BDB
Don't download/build/cache BerkeleyDB
NO_SQLITE
Don't download/build/cache SQLite
NO_UPNP
Don't download/build/cache packages needed for enabling upnp
ALLOW_HOST_PACKAGES
Packages that are missed in dependencies (due to `NO_*` option or build script logic) are searched for among the host system packages using `pkg-config`. It allows building with packages of other (newer) versions
MULTIPROCESS
build libmultiprocess (experimental, requires cmake)
DEBUG
disable some optimizations and enable more runtime checking
HOST_ID_SALT
Optional salt to use when generating host package ids
BUILD_ID_SALT
Optional salt to use when generating build package ids
FORCE_USE_SYSTEM_CLANG
(EXPERTS ONLY) When cross-compiling for macOS, use Clang found in the system's $PATH rather than the default prebuilt release of Clang from llvm.org. Clang 8 or later is required.
If some packages are not built, for example `make NO_WALLET=1`, the appropriate options will be passed to litecoin's configure. In this case, `--disable-wallet`. ### Additional targets download: run 'make download' to fetch all sources without building them download-osx: run 'make download-osx' to fetch all sources needed for macOS builds download-win: run 'make download-win' to fetch all sources needed for win builds download-linux: run 'make download-linux' to fetch all sources needed for linux builds ### Android Before proceeding with an Android build one needs to get the [Android SDK](https://developer.android.com/studio) and use the "SDK Manager" tool to download the NDK and one or more "Platform packages" (these are Android versions and have a corresponding API level). In order to build `ANDROID_API_LEVEL` (API level corresponding to the Android version targeted, e.g. Android 9.0 Pie is 28 and its "Platform package" needs to be available) and `ANDROID_TOOLCHAIN_BIN` (path to toolchain binaries depending on the platform the build is being performed on) need to be set. API levels from 24 to 29 have been tested to work. If the build includes Qt, environment variables `ANDROID_SDK` and `ANDROID_NDK` need to be set as well but can otherwise be omitted. This is an example command for a default build with no disabled dependencies: ANDROID_SDK=/home/user/Android/Sdk ANDROID_NDK=/home/user/Android/Sdk/ndk-bundle make HOST=aarch64-linux-android ANDROID_API_LEVEL=28 ANDROID_TOOLCHAIN_BIN=/home/user/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin ### Other documentation - [description.md](description.md): General description of the depends system - [packages.md](packages.md): Steps for adding packages