Problem: Deploying release artifacts is a manual process Solution: Use travis to deploy these artifacts automatically.

The deployment is triggered by tagging on the zeromq/libzmq repository.
Of the many builds travis is checking only the default one with
libsodium and drafts disabled is used for deployment.

For now the results of `make distcheck` are deployed as well as their
md5 and sha1 hash sums. Further changes may upload a generated
Changelog as well.

.travis.yml

@@ -34,3 +34,19 @@ before_script:
 #   Build and check this project
 script:
 - ./autogen.sh && ./configure --with-libsodium --prefix=${BUILD_PREFIX} && make distcheck
+
+# Deploy tags
+before_deploy:
+- . ./ci_deploy.sh
+deploy:
+  provider: releases
+  api_key:
+    secure: "VIOyO6gR+E4PH9i48eq8gF15PYTZamUOLwbaa4nnwCgmKy+iiwIrXBF/FZ9SdzjeUUSrK0v1gAfC389U+ZBjdD0NQTcSZ9UngvSALgtI7w4gQMJ09G74Sowcm21PIO/Pn3V4xpO0ciJ7xb2aGP6zhbGOiK/nmv8MXUM/PzxvH6A="
+  file_glob: true
+  file: ${ZEROMQ4X_DEPLOYMENT}
+  skip_cleanup: true
+  on:
+    repo: zeromq/zeromq4-x
+    branch: master
+    tags: true
+    condition: "$TRAVIS_OS_NAME =~ (linux)"

ci_deploy.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+set -x
+set -e
+
+if [[ $TRAVIS_OS_NAME =~ (linux) ]]; then
+    # Tell travis to deploy all files in dist
+    mkdir dist
+    export ZEROMQ4X_DEPLOYMENT=dist/*
+    # Move archives to dist
+    mv *.tar.gz dist
+    mv *.zip dist
+    # Generate hash sums
+    cd dist
+    md5sum *.zip *.tar.gz > MD5SUMS
+    sha1sum *.zip *.tar.gz > SHA1SUMS
+    cd -
+else
+    export ZEROMQ4X_DEPLOYMENT=""
+fi