monero/contrib/depends/README.md

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

A toolchain will be generated that's suitable for plugging into Monero's cmake. In the above example, a dir named x86_64-w64-mingw32 will be created. To use it for Monero:

cmake -DCMAKE_TOOLCHAIN=`pwd`/contrib/depends/x86_64-w64-mingw32

Common host-platform-triplets for cross compilation are:

• i686-w64-mingw32 for Win32
• x86_64-w64-mingw32 for Win64
• x86_64-apple-darwin11 for MacOSX x86_64
• arm-linux-gnueabihf for Linux ARM 32 bit
• aarch64-linux-gnu for Linux ARM 64 bit
• riscv64-linux-gnu for Linux RISCV 64 bit

No other options are needed, the paths are automatically configured.

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
FALLBACK_DOWNLOAD_PATH: If a source file can't be fetched, try here before giving up
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

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 osx 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

#Mingw builds

Building for 32/64bit mingw requires switching alternatives to a posix mode

update-alternatives --set x86_64-w64-mingw32-g++ x86_64-w64-mingw32-g++-posix
update-alternatives --set x86_64-w64-mingw32-gcc x86_64-w64-mingw32-gcc-posix

Other documentation

• description.md: General description of the depends system
• packages.md: Steps for adding packages