2022-01-22 09:34:30 -07:00
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#!/bin/bash
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set -ex
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# build custom container with libclang and static compilation
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tag="rust-cross:${TARGET:?}"
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docker build --tag="$tag" - << EOF
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FROM rustembedded/cross:$TARGET
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# Install libclang for generating bindings with rust-bindgen
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# The architecture is not relevant here since it's not used for compilation
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RUN apt-get update && \
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apt-get install --assume-yes libclang-dev
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# Set the target prefix
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ENV TARGET_PREFIX="/usr/local/$(echo "${TARGET:?}" | sed -e 's/armv7/arm/' -e 's/-unknown//')"
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# Make sure that cc-rs links libc/libstdc++ statically when cross-compiling
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# See https://github.com/alexcrichton/cc-rs#external-configuration-via-environment-variables for more information
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ENV RUSTFLAGS="-L\$TARGET_PREFIX/lib" CXXSTDLIB="static=stdc++"
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2022-01-23 09:31:12 -07:00
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# Forcefully linking against libatomic, libc and libgcc is required for arm32, otherwise symbols are missing
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2022-01-24 03:45:07 -07:00
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$([[ $TARGET =~ arm ]] && echo 'ENV RUSTFLAGS="$RUSTFLAGS -Clink-arg=-static-libgcc -Clink-arg=-lgcc -lstatic=atomic -lstatic=c"')
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2022-01-22 09:34:30 -07:00
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# Strip symbols while compiling in release mode
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$([[ $@ =~ -r ]] && echo 'ENV RUSTFLAGS="$RUSTFLAGS -Clink-arg=-s"')
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# Make sure that rust-bindgen uses the correct include path when cross-compiling
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# See https://github.com/rust-lang/rust-bindgen#environment-variables for more information
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ENV BINDGEN_EXTRA_CLANG_ARGS="-I\$TARGET_PREFIX/include"
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EOF
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# build conduit for a specific target
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cross build --target="$TARGET" $@
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