add support for ARM

[sheriflouis-FF]

When I try to compile estuary under an ARM machine I get:
# github.com/filecoin-project/filecoin-ffi/generated /usr/bin/ld: skipping incompatible extern/filecoin-ffi/generated/../libfilcrypto.a when searching for -lfilcrypto /usr/bin/ld: skipping incompatible extern/filecoin-ffi/generated/../libfilcrypto.a when searching for -lfilcrypto /usr/bin/ld: skipping incompatible extern/filecoin-ffi/generated/../libfilcrypto.a when searching for -lfilcrypto /usr/bin/ld: skipping incompatible extern/filecoin-ffi/generated/../libfilcrypto.a when searching for -lfilcrypto /usr/bin/ld: skipping incompatible extern/filecoin-ffi/generated/../libfilcrypto.a when searching for -lfilcrypto /usr/bin/ld: cannot find -lfilcrypto collect2: error: ld returned 1 exit status make: *** [Makefile:67: estuary] Error 2

Architecture:
# lscpu Architecture: aarch64 CPU op-mode(s): 32-bit, 64-bit
OS:
5.4.0-1045-aws

[alvin-reyes]

Quick investigation on this It seems its there is a workaround based on this lotus issue here filecoin-project/lotus#1779 (comment)

RUSTFLAGS="-C target-cpu=native -g" FFI_BUILD_FROM_SOURCE=1 make clean deps bench

[en0ma]

@sheriflouis-FF closing this for now, if the solution proposed by @alvin-reyes did not help, please let us know.