Add build/CI scripts

Author: shesek

.travis.yml

@@ -0,0 +1,48 @@
+language: rust
+rust: [ stable ]
+cache: { cargo: true }
+env: [ CARGO_TERM_COLOR=always ]
+
+jobs:
+  include:
+    - stage: Check
+      name: cargo fmt
+      env: CACHE_BUCKET=fmt
+      install: rustup component add rustfmt
+      script: cargo fmt -- --check
+    - name: cargo check
+      env: CACHE_BUCKET=check
+      script: cargo check
+    - name: clippy
+      env: CACHE_BUCKET=clippy
+      install: rustup component add clippy
+      script: cargo clippy --all-targets -- -A clippy::redundant_field_names
+
+    - &build
+      stage: Reproducible builds
+      cache: false
+
+      before_script: |
+        git submodule update --init
+        docker build -t bwt-builder - < bwt/scripts/builder.Dockerfile
+        [ "$IMAGE" == "builder" ] || docker build -t bwt-$IMAGE - < bwt/scripts/$IMAGE.Dockerfile
+
+      script:
+      - >
+        echo -e tr''avis_fo''ld:start:build\\nBuilding... &&
+        docker run -u `id -u` -v `pwd`:/usr/src/libbwt -w /usr/src/libbwt \
+                   --entrypoint scripts/build.sh bwt-$IMAGE &&
+        echo tr''avis_fol''d:end:build
+      - >
+        echo '-----BEGIN SHA256SUM-----' &&
+        (cd dist && sha256sum *.tar.gz) &&
+        echo
+      # XXX if: branch in (master, dev, stable) OR tag IS present
+
+
+      name: Linux/Windows/ARMv7/ARMv8
+      env: IMAGE=builder
+
+    - <<: *build
+      name: Mac OSX
+      env: IMAGE=builder-osx

scripts/build.sh

@@ -0,0 +1,75 @@
+#!/bin/bash
+set -xeo pipefail
+
+# `x86_64-osx` is also available, requires osxcross to be installed (see bwt/builder-osx.Dockerfile)
+TARGETS=${TARGETS:-x86_64-linux,x86_64-win,arm32v7-linux,arm64v8-linux}
+
+# for stderr logging and automatic detection of bitcoind's data dir location
+FEATURES=${FEATURES:-pretty_env_logger,dirs}
+
+[ -f bwt/Cargo.toml ] || (echo >&2 "Missing bwt submodule, run 'git submodule update --init'" && exit 1)
+
+version=$(grep -E '^version =' Cargo.toml | cut -d'"' -f2)
+
+if [[ -n "$SCCACHE_DIR" && -d "$SCCACHE_DIR" ]]; then
+  export RUSTC_WRAPPER=$(which sccache)
+fi
+
+# Build library for a single platform/variant with the specified feature set
+build_platform_variant() {
+  local platform_nick=$1
+  local platform_rust=$2
+  local features=$3
+  local variant=$4
+  local name=libbwt-$version$variant-$platform_nick
+  local filename=$(lib_filename $platform_rust)
+
+  cargo build --release --target $platform_rust --no-default-features --features $FEATURES,$features
+
+  mkdir -p dist/$name
+  mv target/$platform_rust/release/$filename dist/$name/
+  strip_symbols $platform_rust dist/$name/$filename || true
+  cp LICENSE README.md libbwt.h dist/$name/
+  pack $name
+}
+
+# Build variants (full/electrum_only) for the specified platform
+build_platform() {
+  if [[ $TARGETS != *"$1"* ]]; then return; fi
+
+  [ -n "$ELECTRUM_ONLY_ONLY" ] || build_platform_variant $1 $2 http,electrum ''
+  build_platform_variant $1 $2 electrum '-electrum_only'
+}
+
+lib_filename() {
+  # Windows dll files ar built as `bwt.dll`, without the `lib` prefix
+  local pre=$([[ $1 == *"-windows-"* ]] || echo lib)
+  local ext=$([[ $1 == *"-windows-"* ]] && echo .dll || ([[ $1 == *"-apple-"* ]] && echo .dylib || echo .so))
+  echo -n ${pre}bwt${ext}
+}
+
+strip_symbols() {
+  case $1 in
+    "x86_64-unknown-linux-gnu") x86_64-linux-gnu-strip $2 ;;
+    "x86_64-pc-windows-gnu") x86_64-w64-mingw32-strip $2 ;;
+    "x86_64-apple-darwin") x86_64-apple-darwin15-strip $2 ;;
+    "armv7-unknown-linux-gnueabihf") arm-linux-gnueabihf-strip $2 ;;
+    "aarch64-unknown-linux-gnu") aarch64-linux-gnu-strip $2 ;;
+    *) echo >&2 Platform not found: $1; strip $2 ;;
+  esac
+}
+
+# pack tar.gz with static/removed metadata attrs and deterministic file order for reproducibility
+pack() {
+  local name=$1
+  touch -t 1711081658 dist/$name dist/$name/*
+  pushd dist
+  TZ=UTC tar --mtime='2017-11-08 16:58:00' --owner=0 --sort=name -I 'gzip --no-name' -chf $name.tar.gz $name
+  popd
+}
+
+build_platform x86_64-linux   x86_64-unknown-linux-gnu
+build_platform x86_64-osx     x86_64-apple-darwin
+build_platform x86_64-windows x86_64-pc-windows-gnu
+build_platform arm32v7-linux  armv7-unknown-linux-gnueabihf
+build_platform arm64v8-linux  aarch64-unknown-linux-gnu