184 lines
4.3 KiB
Bash
184 lines
4.3 KiB
Bash
#!/bin/sh
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# Copyright 2018 Oliver Smith
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# SPDX-License-Identifier: GPL-3.0-or-later
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#
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# usage example:
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# $ cd ~/code/linux
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# $ source ~/code/pmbootstrap/helpers/envkernel.sh
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check_kernel_folder() {
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[ -e "Kbuild" ] && return
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echo "ERROR: This folder is not a linux source tree: $PWD"
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return 1
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}
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export_pmbootstrap_dir() {
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# Get pmbootstrap dir based on this script's location
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# See also: <https://stackoverflow.com/a/29835459>
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# shellcheck disable=SC2039
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if [ -n "${BASH_SOURCE[0]}" ]; then
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script_dir="$(dirname "${BASH_SOURCE[0]}")"
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else
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script_dir="$(dirname "$1")"
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fi
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# Fail with debug information
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# shellcheck disable=SC2155
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export pmbootstrap_dir=$(realpath "$script_dir/..")
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if ! [ -e "$pmbootstrap_dir/pmbootstrap.py" ]; then
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echo "ERROR: Failed to get the script's location with your shell."
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echo "Please adjust export_pmbootstrap_dir in envkernel.sh. Debug info:"
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echo "\$1: $1"
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echo "\$pmbootstrap_dir: $pmbootstrap_dir"
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return 1
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fi
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}
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set_alias_pmbootstrap() {
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pmbootstrap="$pmbootstrap_dir"/pmbootstrap.py
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# shellcheck disable=SC2139
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alias pmbootstrap="$pmbootstrap"
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if [ -e ~/.config/pmbootstrap.cfg ]; then
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$pmbootstrap work_migrate
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else
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echo "NOTE: First run of pmbootstrap, running 'pmbootstrap init'"
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$pmbootstrap init
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fi
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}
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export_chroot_device_deviceinfo() {
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chroot="$(pmbootstrap config work)/chroot_native"
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device="$(pmbootstrap config device)"
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deviceinfo="$pmbootstrap_dir/aports/device/device-$device/deviceinfo"
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export chroot device deviceinfo
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}
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check_device() {
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[ -e "$deviceinfo" ] && return
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echo "ERROR: Please select a valid device in 'pmbootstrap init'"
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return 1
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}
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initialize_chroot() {
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# Don't initialize twice
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flag="$chroot/tmp/envkernel/setup_done"
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[ -e "$flag" ] && return
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# Install needed packages
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echo "Initializing Alpine chroot (details: 'pmbootstrap log')"
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# shellcheck disable=SC2154
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pmbootstrap -q chroot -- apk -q add \
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abuild \
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bc \
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binutils-"$deviceinfo_arch" \
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binutils \
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bison \
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flex \
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gcc-"$deviceinfo_arch" \
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gcc \
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linux-headers \
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libressl-dev \
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make \
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musl-dev \
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ncurses-dev \
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perl || return 1
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# Create /mnt/linux
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sudo mkdir -p "$chroot/mnt/linux"
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# Mark as initialized
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mkdir -p "$chroot/tmp/envkernel"
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touch "$flag"
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}
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mount_kernel_source() {
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[ -e "$chroot/mnt/linux/Kbuild" ] && return
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sudo mount --bind "$PWD" "$chroot/mnt/linux"
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}
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create_output_folder() {
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[ -d "$chroot/mnt/linux/.output" ] && return
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mkdir -p ".output"
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pmbootstrap -q chroot -- chown -R pmos:pmos "/mnt/linux/.output"
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}
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set_alias_make() {
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# Cross compiler prefix
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# shellcheck disable=SC1090
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prefix="$(. "$chroot/usr/share/abuild/functions.sh";
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arch_to_hostspec "$deviceinfo_arch")"
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# Kernel architecture
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case "$deviceinfo_arch" in
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aarch64*) arch="arm64" ;;
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arm*) arch="arm" ;;
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esac
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# Build make command
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cmd="echo '*** pmbootstrap envkernel.sh active for $PWD! ***';"
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cmd="$cmd pmbootstrap -q chroot --"
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cmd="$cmd ARCH=$arch"
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cmd="$cmd CROSS_COMPILE=/usr/bin/$prefix-"
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cmd="$cmd make -C /mnt/linux O=/mnt/linux/.output"
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# shellcheck disable=SC2139
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alias make="$cmd"
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}
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set_alias_pmbroot_kernelroot() {
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# shellcheck disable=SC2139
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alias pmbroot="cd '$pmbootstrap_dir'"
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# shellcheck disable=SC2139
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alias kernelroot="cd '$PWD'"
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}
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main() {
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# Stop executing once a function fails
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# shellcheck disable=SC1090
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if check_kernel_folder \
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&& export_pmbootstrap_dir "$1" \
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&& set_alias_pmbootstrap \
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&& export_chroot_device_deviceinfo \
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&& check_device \
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&& . "$deviceinfo" \
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&& initialize_chroot \
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&& mount_kernel_source \
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&& create_output_folder \
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&& set_alias_make \
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&& set_alias_pmbroot_kernelroot; then
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# Success
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echo "pmbootstrap envkernel.sh activated successfully."
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echo " * kernel source: $PWD"
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echo " * output folder: $PWD/.output"
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echo " * architecture: $arch ($device is $deviceinfo_arch)"
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echo " * aliases: make, kernelroot, pmbootstrap, pmbroot" \
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"(see 'type make' etc.)"
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else
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# Failure
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echo "See also: <https://postmarketos.org/troubleshooting>"
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return 1
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fi
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}
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# Print fish alias syntax (when called from envkernel.fish)
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fish_compat() {
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[ "$1" = "--fish" ] || return
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for name in make kernelroot pmbootstrap pmbroot; do
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echo "alias $(alias $name | sed 's/=/ /')"
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done
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}
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# Run main() with all output redirected to stderr
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# Afterwards print fish compatible syntax to stdout
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main "$0" >&2 && fish_compat "$1"
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