feat: add fast multi-platform build

.gitignore

@@ -1,7 +1,17 @@
+# log files
 *_dump.log
 logs/
-target/
+
+# environment secrets
+.env
+
+# IDEs
 .vscode
 .idea
+
+# build artifacts
+target/
+dist/
+
+# other
 .DS_Store
-.env

RELEASE.md

@@ -16,8 +16,6 @@ Pay special attention to the `README` and `docker-compose` files.
 For instance, for the Bolt sidecar this is in `bolt-sidecar/Cargo.toml`.
 Similar changes should be made in the other packages getting updated.
 
-We don't currently keep track of the version for flashbots forks.
-
 Next, update the version of the Docker images used in any `docker-compose` files.
 These currently only live inside the `testnets/` dir.
 
@@ -29,9 +27,10 @@ We use the built-in Github changelog feature to generate the changelog.
 
 ## 3. Build new Docker images
 
-You can build new Docker images with the `just release <tag>` recipe.
+You can build new Docker images with the `just build-and-push-all-images <tag>` recipe.
 
-Example: `just release v0.2.0-alpha` will build and push the Docker images
+Example: `just build-and-push-all-images v0.2.0-alpha` will build and push the Docker images
 for all Bolt components with the tag `v0.2.0-alpha` for both `arm64` and `amd64`
-architectures. This can take a long time... We recommend building from an ARM machine
-because cross-compiling from x86 into ARM is slow as hell.
+architectures. This can take a long time.
+
+Since we use cross compilation, we recommend running this from an x86_64 linux box.

bolt-boost/Cargo.toml

@@ -3,6 +3,10 @@ name = "bolt-boost"
 version = "0.3.0-alpha"
 edition = "2021"
 
+[profile.release]
+lto = true
+debug = true
+
 [dependencies]
 # core
 tokio = { version = "1", features = ["full"] }
@@ -15,9 +19,7 @@ thiserror = "1.0.63"
 reqwest = "0.12.7"
 
 # crypto
-ssz_rs = { git = "https://github.com/ralexstokes/ssz-rs", rev = "ec3073e", features = [
-    "sha2-asm",
-] }
+ssz_rs = { git = "https://github.com/ralexstokes/ssz-rs", rev = "ec3073e" }
 tree_hash = "0.8"
 
 # tracing & metrics

bolt-boost/Cross.toml

@@ -0,0 +1,7 @@
+[build]
+pre-build = [
+    # We depend on openssl for the build, so we need to install its cross-compiled version
+    # more info at: https://github.com/cross-rs/cross/wiki/Configuration#build
+    "dpkg --add-architecture $CROSS_DEB_ARCH",
+    "apt-get update && apt-get --assume-yes --no-install-recommends install libssl-dev:$CROSS_DEB_ARCH"
+]

bolt-sidecar/Cargo.toml

@@ -4,6 +4,10 @@ version = "0.3.0-alpha"
 edition = "2021"
 default-run = "bolt-sidecar"
 
+[profile.release]
+lto = true
+debug = true
+
 [dependencies]
 # core
 clap = { version = "4.5.20", features = ["derive", "env"] }

bolt-sidecar/Cross.toml

@@ -0,0 +1,11 @@
+[build]
+pre-build = [
+    # We depend on openssl for the build, so we need to install its cross-compiled version
+    # more info at: https://github.com/cross-rs/cross/wiki/Configuration#build
+    "dpkg --add-architecture $CROSS_DEB_ARCH",
+    "apt-get update && apt-get --assume-yes --no-install-recommends install libssl-dev:$CROSS_DEB_ARCH",
+
+    # Update the default gcc and g++ to 10 to avoid a bug in gcc 9 that causes a build failure
+    # more info at: https://github.com/cross-rs/cross/issues/1565#issuecomment-2483968180
+    "apt-get --assume-yes --no-install-recommends install gcc-10 g++-10 && ln -sf /usr/bin/gcc-10 /usr/bin/gcc && ln -sf /usr/bin/g++-10 /usr/bin/g++"
+]

justfile

@@ -136,23 +136,51 @@ send-blob-preconf count='1':
         --count {{count}}
 
 # build all the docker images locally
-build-images:
-	@just build-sidecar
-	@just build-bolt-boost
+build-local-images:
+	@just build-local-sidecar
+	@just build-local-bolt-boost
 
 # build the docker image for the bolt sidecar
 [private]
-build-sidecar:
+build-local-sidecar:
 	cd bolt-sidecar && docker build -t ghcr.io/chainbound/bolt-sidecar:0.1.0 . --load
 
 # build the docker image for bolt-boost
 [private]
-build-bolt-boost:
+build-local-bolt-boost:
 	cd bolt-boost && docker build -t ghcr.io/chainbound/bolt-boost:0.1.0 . --load
 
-# build and push multi-platform docker images to GHCR with the provided tag
-[confirm("are you sure? this will build and push new images on ghcr.io")]
-release tag:
-    chmod +x ./scripts/check_version_bumps.sh && ./scripts/check_version_bumps.sh {{tag}}
-    cd bolt-sidecar && docker buildx build --platform linux/amd64,linux/arm64 -t ghcr.io/chainbound/bolt-sidecar:{{tag}} --push .
-    cd bolt-boost && docker buildx build --platform linux/amd64,linux/arm64 -t ghcr.io/chainbound/bolt-boost:{{tag}} --push .
+
+# Cross platform compilation with cargo cross.
+# Install cross with: `cargo install cross --git https://github.com/cross-rs/cross`.
+# 
+# Troubleshooting tips:
+# * We have to clean the target directory before building for different targets because
+#   of a rustc incremental compilation bug. See: https://github.com/cross-rs/cross/issues/724#issuecomment-1484065725
+# * If incurring into issues related to building `aws-lc-rs`, check this out:
+#   https://github.com/cross-rs/cross/issues/1565#issuecomment-2483968180
+# * If incurring into issues related to building `sha2-asm`, make sure the "sha2-asm" feature
+#   is disabled in the `Cargo.toml` file you are trying to build.
+# 
+# build the cross platform binaries for a package by name. available: "bolt-sidecar", "bolt-boost".
+[private]
+cross-compile package target_arch release_dir:
+    cd {{package}} && cargo clean && cross build --release --target {{target_arch}}
+    mkdir -p {{release_dir}} && cp {{package}}/target/{{target_arch}}/release/{{package}} {{release_dir}}
+
+# build and push multi-platform docker images to GHCR for a package. available: "bolt-sidecar", "bolt-boost".
+build-and-push-image package tag:
+    @just cross-compile {{package}} x86_64-unknown-linux-gnu amd64
+    @just cross-compile {{package}} aarch64-unknown-linux-gnu arm64
+
+    docker buildx build \
+      --build-arg BINARY={{package}} \
+      --file ./scripts/cross.Dockerfile \
+      --platform linux/amd64,linux/arm64 \
+      --tag ghcr.io/chainbound/{{package}}:{{tag}} \
+      --push .
+
+# build and push all the available packages to GHCR with the provided tag
+build-and-push-all-images tag='latest':
+    @just build-and-push-image bolt-sidecar {{tag}}
+    @just build-and-push-image bolt-boost {{tag}}

scripts/cross.Dockerfile

@@ -0,0 +1,18 @@
+# This image is meant to enable cross-architecture builds.
+# It assumes the binary has already been compiled for `$TARGETPLATFORM` and is
+# locatable in `./dist/bin/$TARGETARCH/$BINARY`.
+
+FROM --platform=$TARGETPLATFORM ubuntu:22.04
+
+LABEL org.opencontainers.image.source=https://github.com/chainbound/bolt
+LABEL org.opencontainers.image.licenses="MIT"
+
+# Filled by docker buildx
+ARG TARGETARCH
+
+# Should be set by the caller when building the image
+ARG BINARY
+
+COPY ./dist/bin/$TARGETARCH/$BINARY /usr/local/bin/bolt
+
+ENTRYPOINT ["/usr/local/bin/bolt"]