Support cross build with aws-lc-rs

Cross.toml

@@ -1,45 +1,13 @@
 [build]
+dockerfile = "./docker/linux-cross/Dockerfile"
 pre-build = [
-    # https://aws.github.io/aws-lc-rs/requirements/linux.html
-    "apt-get update",
-    "apt-get install --assume-yes llvm-5.0-dev libclang-5.0-dev clang-5.0",
     "curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain stable",
     ". $HOME/.cargo/env",
     "cargo install --force --locked bindgen-cli && mv $HOME/.cargo/bin/bindgen /usr/bin",
-    "rustup self uninstall -y",
+    "rm -rf $HOME/.cargo"
 ]
 
+
 [build.env]
 passthrough = ["RUSTFLAGS"]
 
-[target.x86_64-pc-windows-gnu]
-pre-build = [
-    # Install NASM for rustls, which deps on aws-lc-rs by default, and it needs NASM
-    "apt-get update",
-    "apt-get install --assume-yes llvm-5.0-dev libclang-5.0-dev clang-5.0 nasm",
-    "curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain stable",
-    ". $HOME/.cargo/env",
-    "cargo install --force --locked bindgen-cli && mv $HOME/.cargo/bin/bindgen /usr/bin",
-    "rustup self uninstall -y",
-]
-
-[target.aarch64-unknown-linux-gnu]
-pre-build = []
-
-[target.aarch64-unknown-linux-musl]
-pre-build = []
-
-[target.x86_64-unknown-linux-gnu]
-pre-build = []
-
-[target.x86_64-unknown-linux-musl]
-pre-build = []
-
-[target.i686-unknown-linux-gnu]
-pre-build = []
-
-[target.aarch64-apple-darwin]
-pre-build = []
-
-[target.x86_64-apple-darwin]
-pre-build = []

docker/linux-cross/Dockerfile

@@ -0,0 +1,11 @@
+ARG CROSS_BASE_IMAGE
+FROM $CROSS_BASE_IMAGE
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && \
+    apt-get install --assume-yes --no-install-recommends build-essential cmake nasm llvm-dev libclang-dev clang  && \
+    git config --global --add safe.directory '*' && \
+    rm -rf /tmp/*
+
+ENV GOCACHE=/tmp