chore: add Makefile and gitignore

.gitignore

@@ -1,14 +1 @@
-# Generated by Cargo
-# will have compiled files and executables
-debug/
-target/
-
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
-
-# These are backup files generated by rustfmt
-**/*.rs.bk
-
-# MSVC Windows builds of rustc generate these, which store debugging information
-*.pdb
+rust

Makefile

@@ -0,0 +1,22 @@
+GIT_URL ?= https://github.com/rust-lang/rust.git
+TARGET ?= aarch64-apple-ios,aarch64-apple-darwin
+
+.PHONY: help
+help:	## Show this help
+	@fgrep -h "## " $(MAKEFILE_LIST) | fgrep -v fgrep | sed -e 's/\\$$//' | sed -e 's/##//'
+
+.PHONY: download
+download:	## Download the Rust compiler
+	git clone --recurse-submodules -j8 ${GIT_URL}
+
+.PHONY: configure
+configure:	## Configure the config.toml
+	cd rust && ./configure \
+		--enable-verbose-tests \
+		--enable-codegen-tests \
+		--prefix=install \
+		--tools=cargo,rustfmt,rust-analyzer \
+		--target=${TARGET} \
+		--set llvm.download-ci-llvm=true \
+		--set build.verbose=3 \
+		--set rust.channel=dev