### 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 **Bitcoin'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 Bitcoin: ./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-darwin14` for macOS - `arm-linux-gnueabihf` for Linux ARM 32 bit - `aarch64-linux-gnu` for Linux ARM 64 bit - `riscv32-linux-gnu` for Linux RISC-V 32 bit - `riscv64-linux-gnu` for Linux RISC-V 64 bit No other options are needed, the paths are automatically configured. 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 python-setuptools For Win32/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: sudo apt-get install curl g++-aarch64-linux-gnu g++-4.8-aarch64-linux-gnu gcc-4.8-aarch64-linux-gnu binutils-aarch64-linux-gnu g++-arm-linux-gnueabihf g++-4.8-arm-linux-gnueabihf gcc-4.8-arm-linux-gnueabihf binutils-arm-linux-gnueabihf g++-4.8-multilib gcc-4.8-multilib binutils-gold bsdmainutils For linux RISC-V 64-bit cross compilation (there are no packages for 32-bit): sudo apt-get install curl 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_lbrycrd` executable (see https://github.com/bitcoin/bitcoin/pull/13543), this is apparently fixed in gcc-8.1.0. 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_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_UPNP: Don't download/build/cache packages needed for enabling upnp DEBUG: disable some optimizations and enable more runtime checking RAPIDCHECK: build rapidcheck (experimental, requires cmake) PROTOBUF: build protobuf (used for deprecated BIP70 support) HOST_ID_SALT: Optional salt to use when generating host package ids BUILD_ID_SALT: Optional salt to use when generating build package ids If some packages are not built, for example `make NO_WALLET=1`, the appropriate options will be passed to lbrycrd'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 ### Other documentation - [description.md](description.md): General description of the depends system - [packages.md](packages.md): Steps for adding packages