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Is it possible to cross compile the monero source on a x86-64 machine targeting an ARMv7 device?
I tried this command:
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
But I ended up with x86-64 binaries:
$ file monero-wallet-cli
monero-wallet-cli: ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/l, for GNU/Linux 3.2.0, BuildID[sha1]=...
Also, how does the dev team build the monero binaries for the ARM architecture?
The Makefile is actually just a wrapper around CMake. If you look inside, it has various ARM targets like:
release-static-linux-armv7
release-static-linux-armv8
release-static-android-armv7
...
So you would run something like:
make release-static-linux-armv7
To build for ARMv7 Linux.
There is also a section in the README on cross-compiling using the depends build system:
make depends target=arm-linux-gnueabihffor armv7 binaries. Requires: g++-arm-linux-gnueabihf
make depends target=arm-linux-gnueabihf command and had a few dependencies missing (autoconf automake...) which I resolved, then following error occurred: -- Looking for libunbound -- Found libunbound include (unbound.h) in /usr/include CMake Error at CMakeLists.txt:59 (message): Found libunbound includes, but could not find libunbound library. Please make sure you have installed libunbound or libunbound-dev or the equivalent Call Stack (most recent call first): external/CMakeLists.txt:77 (die) Although I do have libunbound-dev installed
Apr 11, 2019 at 17:40
BACKCOMPAT enabled. I created an issue
Apr 12, 2019 at 16:51