mcpherrinm/instructions.md

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Crosscompiling Rust to Arm

Raw

I want to write Rust code on my computer (x86_64, Ubuntu 14.04) and produce arm executables. I found hints on the internet, but not a concise set of instructions on what to do. So I wrote them down exactly:

apt-get install g++-arm-linux-gnueabihf
git clone https://github.com/mozilla/rust.git
mkdir rust/build-cross
cd rust/build-cross
../configure --target=arm-unknown-linux-gnueabihf --prefix=$HOME/local/rust-cross
make -j8 && make install

Invoke it like this:

PATH=$HOME/local/rust-cross:$PATH rustc -C linker=/usr/bin/arm-linux-gnueabihf-gcc -C target=arm-unknown-linux-gnueabihf test.rs

ghost commented Oct 25, 2015

Thanks! I built successfully using this but I get this when testing out the rust-cross:

rustbuild@rustbuild-VirtualBox:~/local/rust-cross/bin$ ./rustc helloworld.rs
./rustc: error while loading shared libraries: librustc_driver-bb943c5a.so: cannot open shared object file: No such file or directory

whereas rustc helloworld.rs (not ./rustc) builds it correctly, but for the current intel architecture.

Any thoughts?