Provide binary builds on GitHub through rust-everywhere

Closes #34

.codeclimate.yml

@@ -1,18 +0,0 @@
-engines:
-  csslint:
-    enabled: false
-  duplication:
-    enabled: true
-    config:
-      languages:
-      - rust
-  eslint:
-    enabled: false
-  fixme:
-    enabled: true
-ratings:
-  paths:
-  - "**.rs"
-exclude_paths:
-- tests/
-- doc/

.travis.yml

@@ -1,7 +1,58 @@
 language: rust
-rust:
-  - 1.8.0
-  - stable
-  - beta
-  - nightly
-cache: cargo
+
+env:
+  global:
+    - PROJECT_NAME=oxipng
+
+matrix:
+  include:
+    - os: osx
+      rust: stable
+      env: TARGET=x86_64-apple-darwin
+      cache: cargo
+    - os: linux
+      rust: 1.8.0
+      env: TARGET=x86_64-unknown-linux-gnu
+      cache: cargo
+    - os: linux
+      rust: stable
+      env: TARGET=x86_64-unknown-linux-gnu
+      cache: cargo
+    - os: linux
+      rust: beta
+      env: TARGET=x86_64-unknown-linux-gnu
+      cache: cargo
+    - os: linux
+      rust: nightly
+      env: TARGET=x86_64-unknown-linux-gnu
+      cache: cargo
+
+before_install:
+  - export PATH="$PATH:$HOME/.cargo/bin"
+
+install:
+  - bash ci/install.sh
+
+script:
+  - bash ci/script.sh
+
+before_deploy:
+  - bash ci/before_deploy.sh
+
+deploy:
+  provider: releases
+  api_key:
+    secure: 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
+  file_glob: true
+  file: ${PROJECT_NAME}-${TRAVIS_TAG}-${TARGET}.*
+  # don't delete the artifacts from previous phases
+  skip_cleanup: true
+  # deploy when a new tag is pushed
+  on:
+    # channel to use to produce the release artifacts
+    condition: $TRAVIS_RUST_VERSION = stable
+    tags: true
+
+notifications:
+  email:
+    on_success: never

ci/before_deploy.sh

@@ -0,0 +1,66 @@
+# `before_deploy` phase: here we package the build artifacts
+
+set -ex
+
+. $(dirname $0)/utils.sh
+
+# Generate artifacts for release
+mk_artifacts() {
+    cargo build --target $TARGET --release
+}
+
+mk_tarball() {
+    # create a "staging" directory
+    local td=$(mktempd)
+    local out_dir=$(pwd)
+
+    # NOTE All Cargo build artifacts will be under the 'target/$TARGET/{debug,release}'
+    cp target/$TARGET/release/oxipng $td
+
+    pushd $td
+
+    # release tarball will look like 'rust-everywhere-v1.2.3-x86_64-unknown-linux-gnu.tar.gz'
+    tar czf $out_dir/${PROJECT_NAME}-${TRAVIS_TAG}-${TARGET}.tar.gz *
+
+    popd
+    rm -r $td
+}
+
+# Package your artifacts in a .deb file
+# NOTE right now you can only package binaries using the `dobin` command. Simply call
+# `dobin [file..]` to include one or more binaries in your .deb package. I'll add more commands to
+# install other things like manpages (`doman`) as the needs arise.
+# XXX This .deb packaging is minimal -- just to make your app installable via `dpkg` -- and doesn't
+# fully conform to Debian packaging guideliens (`lintian` raises a few warnings/errors)
+mk_deb() {
+    dobin target/$TARGET/release/oxipng
+}
+
+main() {
+    mk_artifacts
+    mk_tarball
+
+    if [ $TRAVIS_OS_NAME = linux ]; then
+        if [ ! -z $MAKE_DEB ]; then
+            dtd=$(mktempd)
+            mkdir -p $dtd/debian/usr/bin
+
+            mk_deb
+
+            mkdir -p $dtd/debian/DEBIAN
+            cat >$dtd/debian/DEBIAN/control <<EOF
+Package: $PROJECT_NAME
+Version: ${TRAVIS_TAG#v}
+Architecture: $(architecture $TARGET)
+Maintainer: $DEB_MAINTAINER
+Description: $DEB_DESCRIPTION
+EOF
+
+            fakeroot dpkg-deb --build $dtd/debian
+            mv $dtd/debian.deb $PROJECT_NAME-$TRAVIS_TAG-$TARGET.deb
+            rm -r $dtd
+        fi
+    fi
+}
+
+main

ci/install.sh

@@ -0,0 +1,58 @@
+# `install` phase: install stuff needed for the `script` phase
+
+set -ex
+
+. $(dirname $0)/utils.sh
+
+install_c_toolchain() {
+    case $TARGET in
+        aarch64-unknown-linux-gnu)
+            sudo apt-get install -y --no-install-recommends \
+                 gcc-aarch64-linux-gnu libc6-arm64-cross libc6-dev-arm64-cross
+            ;;
+        *)
+            # For other targets, this is handled by addons.apt.packages in .travis.yml
+            ;;
+    esac
+}
+
+install_rustup() {
+    # uninstall the rust toolchain installed by travis, we are going to use rustup
+    sh ~/rust/lib/rustlib/uninstall.sh
+
+    curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain=$TRAVIS_RUST_VERSION
+
+    rustc -V
+    cargo -V
+}
+
+install_standard_crates() {
+    if [ $(host) != "$TARGET" ]; then
+        rustup target add $TARGET
+    fi
+}
+
+configure_cargo() {
+    local prefix=$(gcc_prefix)
+
+    if [ ! -z $prefix ]; then
+        # information about the cross compiler
+        ${prefix}gcc -v
+
+        # tell cargo which linker to use for cross compilation
+        mkdir -p .cargo
+        cat >>.cargo/config <<EOF
+[target.$TARGET]
+linker = "${prefix}gcc"
+EOF
+    fi
+}
+
+main() {
+    install_c_toolchain
+    install_rustup
+    install_standard_crates
+    configure_cargo
+}
+
+main

ci/script.sh

@@ -0,0 +1,52 @@
+# `script` phase: you usually build, test and generate docs in this phase
+
+set -ex
+
+. $(dirname $0)/utils.sh
+
+# NOTE Workaround for rust-lang/rust#31907 - disable doc tests when cross compiling
+# This has been fixed in the nightly channel but it would take a while to reach the other channels
+disable_cross_doctests() {
+    if [ $(host) != "$TARGET" ] && [ "$TRAVIS_RUST_VERSION" = "stable" ]; then
+        if [ "$TRAVIS_OS_NAME" = "osx" ]; then
+            brew install gnu-sed --default-names
+        fi
+
+        find src -name '*.rs' -type f | xargs sed -i -e 's:\(//.\s*```\):\1 ignore,:g'
+    fi
+}
+
+# PROTIP Always pass `--target $TARGET` to cargo commands, this makes cargo output build artifacts
+# to target/$TARGET/{debug,release} which can reduce the number of needed conditionals in the
+# `before_deploy`/packaging phase
+run_test_suite() {
+    case $TARGET in
+        # configure emulation for transparent execution of foreign binaries
+        aarch64-unknown-linux-gnu)
+            export QEMU_LD_PREFIX=/usr/aarch64-linux-gnu
+            ;;
+        arm*-unknown-linux-gnueabihf)
+            export QEMU_LD_PREFIX=/usr/arm-linux-gnueabihf
+            ;;
+        *)
+            ;;
+    esac
+
+    if [ ! -z "$QEMU_LD_PREFIX" ]; then
+        # Run tests on a single thread when using QEMU user emulation
+        export RUST_TEST_THREADS=1
+    fi
+
+    cargo build --target $TARGET --verbose
+    cargo test --target $TARGET
+
+    # sanity check the file type
+    file target/$TARGET/debug/oxipng
+}
+
+main() {
+    disable_cross_doctests
+    run_test_suite
+}
+
+main

ci/utils.sh

@@ -0,0 +1,56 @@
+mktempd() {
+    echo $(mktemp -d 2>/dev/null || mktemp -d -t tmp)
+}
+
+host() {
+    case "$TRAVIS_OS_NAME" in
+        linux)
+            echo x86_64-unknown-linux-gnu
+            ;;
+        osx)
+            echo x86_64-apple-darwin
+            ;;
+    esac
+}
+
+gcc_prefix() {
+    case "$TARGET" in
+        aarch64-unknown-linux-gnu)
+            echo aarch64-linux-gnu-
+            ;;
+        arm*-gnueabihf)
+            echo arm-linux-gnueabihf-
+            ;;
+        *)
+            return
+            ;;
+    esac
+}
+
+dobin() {
+    [ -z $MAKE_DEB ] && die 'dobin: $MAKE_DEB not set'
+    [ $# -lt 1 ] && die "dobin: at least one argument needed"
+
+    local f prefix=$(gcc_prefix)
+    for f in "$@"; do
+        install -m0755 $f $dtd/debian/usr/bin/
+        ${prefix}strip -s $dtd/debian/usr/bin/$(basename $f)
+    done
+}
+
+architecture() {
+    case $1 in
+        x86_64-unknown-linux-gnu|x86_64-unknown-linux-musl)
+            echo amd64
+            ;;
+        i686-unknown-linux-gnu|i686-unknown-linux-musl)
+            echo i386
+            ;;
+        arm*-unknown-linux-gnueabihf)
+            echo armhf
+            ;;
+        *)
+            die "architecture: unexpected target $TARGET"
+            ;;
+    esac
+}