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add script to build for Raspberry Pi 1 and Zero in docker image #202

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add script to build for Raspberry Pi 1 and Zero in docker image #202

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3 changes: 3 additions & 0 deletions contrib/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,9 @@
# The resulting image can be used to build librespot for linux x86_64, armhf and armel.
# $ docker run -v /tmp/librespot-build:/build librespot-cross
#
# To build librespot for armhf that also works on Raspberry Pi 1/Zero, run:
# $ docker run -v /tmp/librespot-build:/build librespot-cross /src/contrib/docker-build-pi-armv6hf.sh
#
# The compiled binaries will be located in /tmp/librespot-build
#
# If only one architecture is desired, cargo can be invoked directly with the appropriate options :
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26 changes: 26 additions & 0 deletions contrib/docker-build-pi-armv6hf.sh
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#!/usr/bin/env bash
set -eux

#remove debian armhf installed tools/libs
apt-get purge -y crossbuild-essential-armhf
apt-get purge -y *:armhf

# get raspberry pi tools (cross compiler etc); use fixed revision for now, should be updated sometimes
mkdir /pi-tools
curl -L https://github.com/raspberrypi/tools/archive/648a6eeb1e3c2b40af4eb34d88941ee0edeb3e9a.tar.gz | tar xz --strip-components 1 -C /pi-tools
export PATH=/pi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/:$PATH
# create wrapper around gcc to point to rpi sysroot
echo -e '#!/bin/bash' > /pi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/gcc-sysroot
echo -e "arm-linux-gnueabihf-gcc --sysroot /pi-tools/arm-bcm2708/arm-bcm2708hardfp-linux-gnueabi/arm-bcm2708hardfp-linux-gnueabi/sysroot \"\$@\"" >> /pi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/gcc-sysroot
chmod +x /pi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/gcc-sysroot
# get alsa lib and headers
curl -OL http://mirrordirector.raspbian.org/raspbian/pool/main/a/alsa-lib/libasound2_1.0.25-4_armhf.deb
ar p libasound2_1.0.25-4_armhf.deb data.tar.gz | tar -xz -C /pi-tools/arm-bcm2708/arm-bcm2708hardfp-linux-gnueabi/arm-bcm2708hardfp-linux-gnueabi/sysroot
curl -OL http://mirrordirector.raspbian.org/raspbian/pool/main/a/alsa-lib/libasound2-dev_1.0.25-4_armhf.deb
ar p libasound2-dev_1.0.25-4_armhf.deb data.tar.gz | tar -xz -C /pi-tools/arm-bcm2708/arm-bcm2708hardfp-linux-gnueabi/arm-bcm2708hardfp-linux-gnueabi/sysroot/
# i don't why this is neccessary
ln -s ld-linux.so.3 /pi-tools/arm-bcm2708/arm-bcm2708hardfp-linux-gnueabi/arm-bcm2708hardfp-linux-gnueabi/sysroot/lib/ld-linux-armhf.so.3
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@michaelherger michaelherger Jun 16, 2017 •
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What would the expected source folder be for this? My builds still fail. And when I check the binary with ldd it would still complain about a missing ld-linux.so.3:

$ ldd spotty
	libc.so.6 => /lib/libc.so.6 (0xb6981000)
	ld-linux.so.3 => not found
	libdl.so.2 => /lib/libdl.so.2 (0xb696e000)
	librt.so.1 => /lib/librt.so.1 (0xb6957000)
	libpthread.so.0 => /lib/libpthread.so.0 (0xb692e000)
	libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0xb6902000)
	libm.so.6 => /lib/libm.so.6 (0xb6884000)
	/lib/ld-linux-armhf.so.3 (0x7f61d000)

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@michaelherger michaelherger Jun 17, 2017

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Just figured I tested on a piCore system rather than Raspbian. Your librespot binaries would fail there, too. Most likely this is due to an un-met pre-condition in piCore.

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@herrernst herrernst Jun 17, 2017

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Source folder is the same as target. Sorry that it doesn't work on piCore

# point cargo to use gcc wrapper as linker
echo -e '[target.arm-unknown-linux-gnueabihf]\nlinker = "gcc-sysroot"' > /.cargo/config

cargo build --release --target arm-unknown-linux-gnueabihf --no-default-features --features alsa-backend