Plume front arm support (#402)

* Update plume-front build to use a shell script that adds the necessary dependencies on arm (x86 left untouched inside the script)

* Fix cleanup portion of plume-front.sh

* Break wasm dependencies for arm out so they are run before the main builds to improve layer caching on subsequent docker builds

* Fixup dockerfile so wasm-deps can run properly and with fewer assumptions

* Move new scripts to script/ folder

* Remove saving of path as it's not actually not necessary

* Add rust-toolchain to early copy so it pulls the right rust release (addresses #400)

Dockerfile

@@ -10,12 +10,15 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     make \
     openssl \
     libssl-dev
+WORKDIR /scratch
+COPY script/wasm-deps.sh .
+RUN chmod a+x ./wasm-deps.sh && ./wasm-deps.sh
 WORKDIR /app
-COPY Cargo.toml Cargo.lock ./
+COPY Cargo.toml Cargo.lock rust-toolchain ./
 RUN cargo install diesel_cli --no-default-features --features postgres --version '=1.3.0'
 RUN cargo install cargo-web
 COPY . .
-RUN cargo web deploy -p plume-front
+RUN chmod a+x ./script/plume-front.sh && ./script/plume-front.sh
 RUN cargo install --path ./ --force --no-default-features --features postgres
 RUN cargo install --path plume-cli --force --no-default-features --features postgres
 RUN cargo clean

script/plume-front.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+ARCH=`arch`
+
+if [ "$ARCH" == "aarch64" -o "$ARCH" == "armv7l" ] ; then
+    export PATH=/opt/local/llvm/bin:${PATH}
+    cd /app
+    RUSTFLAGS="-C linker=lld" cargo web deploy -p plume-front
+else
+    cargo web deploy -p plume-front
+fi

script/wasm-deps.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+ARCH=`arch`
+
+if [ "$ARCH" == "aarch64" -o "$ARCH" == "armv7l" ] ; then
+    apt-get install -y --no-install-recommends build-essential subversion ninja-build cmake
+    mkdir -p /scratch/src
+    cd /scratch/src
+    svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm
+    cd /scratch/src/llvm/tools
+    svn co http://llvm.org/svn/llvm-project/lld/trunk lld
+    #svn co http://llvm.org/svn/llvm-project/cfe/trunk clang
+    #svn co http://llvm.org/svn/llvm-project/clang-tools-extra/trunk extra
+    mkdir -p /scratch/build/arm
+    cd /scratch/build/arm
+    if [ "$ARCH" == "aarch64" ] ; then
+        cmake -G Ninja /scratch/src/llvm \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_INSTALL_PREFIX=/opt/local/llvm \
+            -DLLVM_TARGETS_TO_BUILD="AArch64" \
+            -DLLVM_TARGET_ARCH="AArch64"
+    else
+        cmake -G Ninja /scratch/src/llvm \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_INSTALL_PREFIX=/opt/local/llvm \
+            -DLLVM_TARGETS_TO_BUILD="ARM" \
+            -DLLVM_TARGET_ARCH="ARM"
+    fi
+    ninja lld
+    ninja install-lld
+    cd ~
+    rm -rf /scratch
+fi