Martin Storsjö
99e2fefc9d
This avoids having to pass --build-arg CORES=n when building the docker images.
55 lines
2.0 KiB
Docker
55 lines
2.0 KiB
Docker
# Cross compile an llvm-mingw toolchain for windows.
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#
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# This needs to be built with --build-arg BASE=<image>, where image is the name
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# of a docker image that contains a working llvm-mingw cross compiler
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# from a similar enough version.
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#
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# This builds LLVM and all other build tools that need to run on the target
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# platform, but just copies over the runtime libraries from the existing
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# toolchain in the base docker image.
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ARG BASE=mstorsjo/llvm-mingw:dev
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FROM $BASE
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RUN apt-get update -qq && \
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apt-get install -qqy zip && \
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apt-get clean -y && \
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rm -rf /var/lib/apt/lists/*
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ARG CROSS_ARCH=x86_64
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ENV CROSS_TOOLCHAIN_PREFIX=/opt/llvm-mingw-$CROSS_ARCH
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ENV EXEEXT=.exe
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ENV HOST=$CROSS_ARCH-w64-mingw32
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COPY build-llvm.sh .
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RUN ./build-llvm.sh $CROSS_TOOLCHAIN_PREFIX
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COPY strip-llvm.sh .
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RUN ./strip-llvm.sh $CROSS_TOOLCHAIN_PREFIX
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ARG TOOLCHAIN_ARCHS="i686 x86_64 armv7 aarch64"
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COPY build-mingw-w64.sh ./
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RUN ./build-mingw-w64.sh $CROSS_TOOLCHAIN_PREFIX --skip-include-triplet-prefix
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COPY wrappers/*.sh wrappers/*.c ./wrappers/
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COPY install-wrappers.sh .
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RUN ./install-wrappers.sh $CROSS_TOOLCHAIN_PREFIX
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COPY prepare-cross-toolchain.sh .
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RUN ./prepare-cross-toolchain.sh $TOOLCHAIN_PREFIX $CROSS_TOOLCHAIN_PREFIX $CROSS_ARCH
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# Cheating: Build binutils for an x86 target and take strip and objcopy
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# from there. The wrapper script can use them for any arch.
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RUN wget -q https://ftp.gnu.org/gnu/binutils/binutils-2.31.1.tar.xz && \
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tar -Jxf binutils-2.31.1.tar.xz && \
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cd binutils-2.31.1 && \
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./configure --host=$HOST --target=x86_64-w64-mingw32 --prefix=/opt/binutils LDFLAGS="-Wl,-s" && \
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make -j$(nproc) && \
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make install && \
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cp /opt/binutils/x86_64-w64-mingw32/bin/objcopy.exe $CROSS_TOOLCHAIN_PREFIX/bin/binutils-objcopy.exe && \
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cp /opt/binutils/x86_64-w64-mingw32/bin/strip.exe $CROSS_TOOLCHAIN_PREFIX/bin/binutils-strip.exe
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ARG TAG
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RUN ln -s $CROSS_TOOLCHAIN_PREFIX llvm-mingw && \
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zip -9r /llvm-mingw-$TAG$CROSS_ARCH.zip llvm-mingw
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