Build and test on ARM64 CPU architecture (#1)

.travis.yml

@@ -142,7 +142,24 @@ matrix:
         packages:
         - abi-dumper
         - abi-compliance-checker
-
+  - name: Linux ARM64
+    env: BUILD_TYPE=default CURVE=tweetnacl GSSAPI=enabled PGM=enabled NORM=enabled IPv6=ON TLS=enabled DRAFT=enabled
+    os: linux
+    dist: bionic
+    arch: arm64
+    addons:
+      apt:
+        sources:
+        - sourceline: 'deb http://download.opensuse.org/repositories/network:/messaging:/zeromq:/git-stable/xUbuntu_18.04/ ./'
+          key_url: 'http://download.opensuse.org/repositories/network:/messaging:/zeromq:/git-stable/xUbuntu_18.04/Release.key'
+        packages:
+          - zip
+          - libkrb5-dev
+          - libnorm-dev
+          - libpgm-dev
+          - libgnutls28-dev
+  allow_failures:
+    - arch: arm64
 
 before_install:
 - if [ $TRAVIS_OS_NAME == "osx" -a $BUILD_TYPE == "android" ] ; then brew update; brew install binutils ; fi

RELICENSE/MartinGrigorov.md

@@ -0,0 +1,15 @@
+# Permission to Relicense under MPLv2 or any other OSI approved license chosen by the current ZeroMQ BDFL
+
+This is a statement by Martin Grigorov
+that grants permission to relicense its copyrights in the libzmq C++
+library (ZeroMQ) under the Mozilla Public License v2 (MPLv2) or any other 
+Open Source Initiative approved license chosen by the current ZeroMQ 
+BDFL (Benevolent Dictator for Life).
+
+A portion of the commits made by the Github handle "martin-g", with
+commit author "Martin Grigorov", are copyright of Martin Grigorov.
+This document hereby grants the libzmq project team to relicense libzmq, 
+including all past, present and future contributions of the author listed above.
+
+Martin Grigorov
+2021/01/11