32 lines
1.3 KiB
Docker
32 lines
1.3 KiB
Docker
FROM ubuntu:17.10
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RUN dpkg --add-architecture i386
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RUN apt-get update
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RUN apt-get install -y --no-install-recommends \
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gcc-multilib make libc6-dev git curl ca-certificates libc6:i386
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# Below we're cross-compiling musl for i686 using the system compiler on an
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# x86_64 system. This is an awkward thing to be doing and so we have to jump
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# through a couple hoops to get musl to be happy. In particular:
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#
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# * We specifically pass -m32 in CFLAGS and override CC when running ./configure,
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# since otherwise the script will fail to find a compiler.
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# * We manually unset CROSS_COMPILE when running make; otherwise the makefile
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# will call the non-existent binary 'i686-ar'.
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RUN curl --retry 5 https://www.musl-libc.org/releases/musl-1.1.19.tar.gz | \
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tar xzf - && \
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cd musl-1.1.19 && \
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CC=gcc CFLAGS=-m32 ./configure --prefix=/musl-i686 --disable-shared --target=i686 && \
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make CROSS_COMPILE= install -j4 && \
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cd .. && \
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rm -rf musl-1.1.19
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# Install linux kernel headers sanitized for use with musl
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RUN curl --retry 5 -L https://github.com/sabotage-linux/kernel-headers/archive/v3.12.6-6.tar.gz | \
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tar xzf - && \
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cd kernel-headers-3.12.6-6 && \
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make ARCH=i386 prefix=/musl-i686 install -j4 && \
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cd .. && \
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rm -rf kernel-headers-3.12.6-6
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ENV PATH=$PATH:/musl-i686/bin:/rust/bin \
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CC_i686_unknown_linux_musl=musl-gcc
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