Merge branch 'multitarget' into 'master'

Package all the toolchains in the docker image

See merge request !27

Dockerfile

@@ -11,7 +11,8 @@ RUN export DEBIAN_FRONTEND=noninteractive && \
       libfuse-dev \
       pkg-config \
       qemu-system-x86 \
-      rsync
+      rsync \
+      nasm
 
 # Install rust
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
@@ -25,7 +26,10 @@ COPY . /root/redoxer
 RUN cargo install --path /root/redoxer
 
 # Install redoxer toolchain
-RUN redoxer toolchain
+RUN TARGET=x86_64-unknown-redox redoxer toolchain && \
+    TARGET=i686-unknown-redox redoxer toolchain && \
+    TARGET=aarch64-unknown-redox redoxer toolchain && \
+    TARGET=riscv64gc-unknown-redox redoxer toolchain
 
 # Ensure redoxer exec is working
 RUN redoxer exec true

src/env.rs

@@ -29,6 +29,7 @@ pub fn command<S: AsRef<ffi::OsStr>>(program: S) -> io::Result<process::Command>
     command.env("RUSTUP_TOOLCHAIN", &toolchain_dir);
     command.env("TARGET", target());
     command.env("GNU_TARGET", gnu_target());
+    command.env("CFLAGS_riscv64gc_unknown_redox", "-march=rv64gc -mabi=lp64d");
 
     Ok(command)
 }

src/lib.rs

@@ -27,6 +27,7 @@ fn redoxer_dir() -> path::PathBuf {
     dirs::home_dir()
         .unwrap_or(path::PathBuf::from("."))
         .join(".redoxer")
+        .join(target())
 }
 
 fn status_error(status: process::ExitStatus) -> io::Result<()> {