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0848dfc264
Set the ARCH, CROSS_COMPILE and PATH variables to support Linux kernel cross compilation. ARCH is set according to: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/arch?h=v5.2.2 PATH is set to include the cross toolchain path, which is used by the kernel Makefile. CROSS_COMPILE is the CROSS_TRIPLE with a dash appended, as the kernel Makefile uses it to invoke the toolchain utils. To build the kernel, depending on the config, libssl-dev and libelf-dev are required. Those are not dealt in this commit as they are not correlated to the environment variables. Validated by build the kernel using default kernel config when possible, otherwise randomly select a defconfig. <arch> - <defconfig> arm64 - defconfig armv5 and armv5-musl - colibri_pxa270_defconfig armv6 - bcm2835_defconfig armv7 and armv7a- tegra_defconfig *x86 - i386_defconfig mips and mipsel - ath79_defconfig ppc64le - wii_defconfig s390x - defconfig x64 - x86_64_defconfig * x86 dockcross toolchain does not provide "ld" and compilation fails. fix #160
64 lines
2.5 KiB
Docker
64 lines
2.5 KiB
Docker
FROM dockcross/base:latest
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MAINTAINER Matt McCormick "matt.mccormick@kitware.com"
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# Enable 32 bits binaries
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RUN dpkg --add-architecture i386 && \
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apt-get update && \
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apt-get install -y libstdc++6:i386 libgcc1:i386 zlib1g:i386
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# The cross-compiling emulator
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RUN apt-get update && apt-get install -y \
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qemu-user \
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qemu-user-static
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ENV CROSS_TRIPLE arm-linux-gnueabihf
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ENV CROSS_ROOT /usr/${CROSS_TRIPLE}
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ENV AS=/usr/bin/${CROSS_TRIPLE}-as \
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AR=/usr/bin/${CROSS_TRIPLE}-ar \
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CC=/usr/bin/${CROSS_TRIPLE}-gcc \
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CPP=/usr/bin/${CROSS_TRIPLE}-cpp \
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CXX=/usr/bin/${CROSS_TRIPLE}-g++ \
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LD=/usr/bin/${CROSS_TRIPLE}-ld \
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FC=/usr/bin/${CROSS_TRIPLE}-gfortran
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# Raspberry Pi is ARMv6+VFP2, Debian armhf is ARMv7+VFP3
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# Since this Dockerfile is targeting linux-arm from Raspberry Pi onward,
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# we're sticking with it's custom built cross-compiler with hardfp support.
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# We could use Debian's armel, but we'd have softfp and loose a good deal
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# of performance.
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# See: https://wiki.debian.org/RaspberryPi
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# We are also using the 4.7 version of the toolchain, so that glibc=2.13
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# Instead of cloning the whole repo (>1GB at the of writing this), we want to do a so-called "sparse checkout" with "shallow cloning":
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# https://stackoverflow.com/questions/600079/is-there-any-way-to-clone-a-git-repositorys-sub-directory-only/13738951#13738951
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RUN mkdir rpi_tools && cd rpi_tools && git init && git remote add -f origin https://github.com/raspberrypi/tools && \
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git config core.sparseCheckout true && echo "arm-bcm2708/gcc-linaro-${CROSS_TRIPLE}-raspbian" >> .git/info/sparse-checkout && \
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git pull --depth=1 origin master && rsync -av arm-bcm2708/gcc-linaro-${CROSS_TRIPLE}-raspbian/ /usr/ && rm -rf ../rpi_tools
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# Allow dynamically linked executables to run with qemu-arm
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ENV QEMU_LD_PREFIX ${CROSS_ROOT}/libc
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ENV QEMU_SET_ENV "LD_LIBRARY_PATH=${CROSS_ROOT}/lib:${CROSS_ROOT}/libc/lib/${CROSS_TRIPLE}/"
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COPY Toolchain.cmake ${CROSS_ROOT}/
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ENV CMAKE_TOOLCHAIN_FILE ${CROSS_ROOT}/Toolchain.cmake
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# Linux kernel cross compilation variables
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ENV PATH ${PATH}:${CROSS_ROOT}/bin
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ENV CROSS_COMPILE ${CROSS_TRIPLE}-
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ENV ARCH arm
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# Build-time metadata as defined at http://label-schema.org
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ARG BUILD_DATE
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ARG IMAGE=dockcross/linux-armv6
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ARG VERSION=latest
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ARG VCS_REF
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ARG VCS_URL
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LABEL org.label-schema.build-date=$BUILD_DATE \
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org.label-schema.name=$IMAGE \
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org.label-schema.version=$VERSION \
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org.label-schema.vcs-ref=$VCS_REF \
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org.label-schema.vcs-url=$VCS_URL \
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org.label-schema.schema-version="1.0"
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ENV DEFAULT_DOCKCROSS_IMAGE ${IMAGE}:${VERSION}
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