Build ARMv7 releases (#19)

.cargo/config

@@ -6,3 +6,6 @@ ar = "x86_64-apple-darwin15-ar"
 # use --no-insert-timestamp to drop PE timestamps in Windows builds for reproducibility
 # https://wiki.debian.org/ReproducibleBuilds/TimestampsInPEBinaries#building_with_mingw-w64
 rustflags = [ "-C", "link-arg=-Wl,--no-insert-timestamp" ]
+
+[target.armv7-unknown-linux-gnueabihf]
+linker = "arm-linux-gnueabihf-gcc"

CHANGELOG.md

@@ -4,7 +4,7 @@
 
 - Reproducible builds using Docker (#51)
 
-- Pre-built binary releases for macOS (#24)
+- Pre-built binary releases for macOS (#24) and ARMv7 (#19)
 
 - Scriptable transaction broadcast command via `--tx-broadcast-cmd <cmd>` (#7)
 

README.md

@@ -69,7 +69,7 @@ Get yourself a synced Bitcoin Core node (v0.19 is recommended, v0.17 is sufficie
 
 #### Signed pre-built binaries
 
-Available for download on [the releases page](https://github.com/shesek/bwt/releases) (Linux and Windows).
+Available for download on [the releases page](https://github.com/shesek/bwt/releases) (Linux, Mac, Windows and ARMv7).
 
 The releases are signed by Nadav Ivgi (@shesek).
 The public key can be verified on [keybase](https://keybase.io/nadav),
@@ -264,7 +264,7 @@ Download the `electrum_plugin` package from the [releases page](https://github.c
 After restarting Electrum, you should see bwt in the list of installed plugins under `Tools -> Plugins`.
 
 The supported Electrum version is 3.3.8.
-The plugin is currently available for Linux and Windows.
+The plugin is available for Linux, Mac, Windows and ARMv7.
 
 Note that it is not possible to install external plugins with the Electrum AppImage or standalone Windows executable.
 You will need to [run from tar.gz](https://github.com/spesmilo/electrum/#running-from-targz) on Linux, use the Windows installer, or [run from source](https://github.com/spesmilo/electrum/#development-version-git-clone).
@@ -1214,7 +1214,7 @@ The builds can be reproduced in a Docker container environment as follows:
 ```
 $ git clone https://github.com/shesek/bwt && cd bwt
 
-# Linux & Windows
+# Linux, Windows & ARMv7
 $ docker build -t bwt-builder -f scripts/builder.Dockerfile .
 $ docker run -it --rm -v `pwd`:/usr/src/bwt bwt-builder
 

scripts/build.sh

@@ -2,7 +2,7 @@
 set -xeo pipefail
 
 # `osx` is also available, but requires osxcross installed (see builder-os.Dockerfile)
-TARGETS=${TARGETS:-linux,win}
+TARGETS=${TARGETS:-linux,win,armv7}
 
 build() {
   name=$1; target=$2; features=$3
@@ -16,7 +16,9 @@ build() {
 
   mv target/$target/release/bwt$ext $dest
 
-  [[ $target == *"-apple-"* ]] || strip $dest/bwt$ext
+  if [[ $target != *"-apple-"* && $target != "armv7-"* ]]; then
+    strip $dest/bwt$ext
+  fi
 
   cp README.md LICENSE $dest/
 
@@ -40,7 +42,8 @@ version=`cat Cargo.toml | egrep '^version =' | cut -d'"' -f2`
 
 for cfg in linux,x86_64-unknown-linux-gnu \
            win,x86_64-pc-windows-gnu \
-           osx,x86_64-apple-darwin; do
+           osx,x86_64-apple-darwin \
+           armv7,armv7-unknown-linux-gnueabihf; do
   IFS=',' read platform target <<< $cfg
   if [[ $TARGETS != *"$platform"* ]]; then continue; fi
 

scripts/builder.Dockerfile

@@ -1,8 +1,10 @@
 FROM rust:1.46-slim as builder
-RUN apt-get update && apt-get install -y pkg-config libssl-dev gcc-mingw-w64-x86-64 zip && \
-    rustup target add x86_64-pc-windows-gnu
+RUN apt-get update && apt-get install -y pkg-config libssl-dev gcc-mingw-w64-x86-64 gcc-arm-linux-gnueabihf zip && \
+    rustup target add x86_64-pc-windows-gnu && \
+    rustup target add armv7-unknown-linux-gnueabihf
+    # macOS is built using a separate image, see builder-osx.Dockerfile
 
 WORKDIR /usr/src/bwt
 VOLUME /usr/src/bwt
-ENV TARGETS=linux,win
+ENV TARGETS=linux,win,armv7
 ENTRYPOINT [ "/usr/src/bwt/scripts/build.sh" ]

scripts/release-footer.md

@@ -30,6 +30,6 @@ See [more details here](https://github.com/shesek/bwt#reproducible-builds).
 
 #### Electrum plugin
 
-The [Electrum plugin](https://github.com/shesek/bwt#electrum-plugin) is available for download for Linux and Windows, as the `electrum_plugin` package.
+The [Electrum plugin](https://github.com/shesek/bwt#electrum-plugin) is available for download for Linux, Mac, Windows and ARMv7 as the `electrum_plugin` package.
 
 > ⚠️ **NOTE:** The plugin supports watch-only wallets only and **cannot be used with hot wallets**. This is done as a security measure, which is expected to eventually be lifted. You can use the plugin with hardware wallets or with an offline Electrum setup. For hot wallets, you will need to setup a standalone server instead of using the plugin, ideally far away from your keys.