mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-13 20:12:26 +00:00
29941dea24
Automatically pick up packages from under packages/ into BR2_EXTERNAL. Move many subdirectory READMEs into the toplevel and link to toplevel from those subreadmes instead.
230 lines
6.7 KiB
Bash
Executable File
230 lines
6.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eu
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. common
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set -- ${cli_build:-} "$@"
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mkdir -p "${out_dir}"
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br2_cli_file="${out_dir}/br2_cli"
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rm -f "$br2_cli_file"
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touch "$br2_cli_file"
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kernel_config_fragment_cli_file="${out_dir}/kernel_config_fragment_cli"
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kernel_config_fragment_cli_file_tmp="${kernel_config_fragment_cli_file}_tmp"
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rm -f "$kernel_config_fragment_cli_file_tmp"
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touch "$kernel_config_fragment_cli_file_tmp"
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configure=true
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config_fragments="${root_dir}/br2/default"
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extra_make_args=
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j="$(nproc)"
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linux_reconfigure=false
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linux_kernel_custom_config_file=
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kernel_config_fragments=
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post_script_args=
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qemu_sdl='--enable-sdl --with-sdlabi=2.0'
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suffix=
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v=0
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while getopts 'a:B:b:C:c:fGgj:hIiK:kL:lM:p:qSs:v' OPT; do
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case "$OPT" in
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a)
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arch="$OPTARG"
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;;
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B)
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echo "$OPTARG" >> "$br2_cli_file"
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;;
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b)
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config_fragments="${config_fragments} $(common_abspath "${OPTARG}")"
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;;
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C)
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echo "$OPTARG" >> "$kernel_config_fragment_cli_file_tmp"
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;;
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c)
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kernel_config_fragments="${kernel_config_fragments} $(common_abspath "${OPTARG}")"
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;;
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f)
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configure=false
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;;
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g)
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extra_make_args="${extra_make_args} gem5-reconfigure \\
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"
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gem5=true
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;;
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h)
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cat build-usage.adoc 1>&2
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exit
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;;
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I)
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echo "
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BR2_TARGET_ROOTFS_CPIO=n
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BR2_TARGET_ROOTFS_EXT2=n
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BR2_TARGET_ROOTFS_INITRAMFS=y
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" >> "$br2_cli_file"
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;;
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i)
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echo "
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BR2_TARGET_ROOTFS_CPIO=y
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BR2_TARGET_ROOTFS_EXT2=n
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BR2_TARGET_ROOTFS_INITRAMFS=n
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" >> "$br2_cli_file"
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;;
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j)
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j="$OPTARG"
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;;
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K)
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linux_kernel_custom_config_file="$(common_abspath "${OPTARG}")"
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;;
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k)
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extra_make_args="${extra_make_args} kernel_module-reconfigure \\
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"
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;;
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L)
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common_linux_variant="$OPTARG"
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;;
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l)
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linux_reconfigure=true
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extra_make_args="${extra_make_args} linux-reconfigure \\
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"
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;;
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M)
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common_gem5_variant="$OPTARG"
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;;
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p)
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post_script_args="$OPTARG"
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;;
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q)
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extra_make_args="${extra_make_args} host-qemu-reconfigure \\
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"
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;;
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S)
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qemu_sdl=
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;;
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s)
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suffix="$OPTARG"
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;;
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v)
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v=1
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;;
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?)
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exit 2
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;;
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esac
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done
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shift $(($OPTIND - 1))
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extra_make_args="${extra_make_args} $@"
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set_common_vars -L "$common_linux_variant" -M "$common_gem5_variant" "$arch" "$gem5" "$suffix"
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config_file="${buildroot_out_dir}/.config"
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case "$arch" in
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x86_64)
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defconfig=qemu_x86_64_defconfig
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;;
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arm)
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defconfig=qemu_arm_vexpress_defconfig
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;;
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aarch64)
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defconfig=qemu_aarch64_virt_defconfig
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;;
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mips64)
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defconfig=qemu_mips64r6_malta_defconfig
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;;
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esac
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config_fragments="${config_fragments} ${root_dir}/br2/qemu ${br2_cli_file}"
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time {
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# Configure.
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if "$configure"; then
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if ! cmp "${kernel_config_fragment_cli_file}" "${kernel_config_fragment_cli_file_tmp}"; then
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# Only copy if modified, otherwise the kernel always rebuilds.
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cp "${kernel_config_fragment_cli_file_tmp}" "${kernel_config_fragment_cli_file}"
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fi
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cd "${buildroot_dir}"
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for p in $(find "${root_dir}/buildroot_patches/" -maxdepth 1 -name '*.patch' -print); do
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patch -N -r - -p 1 < "$p" || :
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done
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br2_external='../kernel_module:../gem5:../parsec-benchmark'
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packages_dir="${root_dir}/packages"
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for package_dir in "${packages_dir}"/*/; do
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br2_external="${br2_external}:../packages/$(basename "${package_dir}")"
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done
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make O="$buildroot_out_dir" BR2_EXTERNAL="$br2_external" "$defconfig"
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# TODO Can't get rid of these for now.
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# http://stackoverflow.com/questions/44078245/is-it-possible-to-use-config-fragments-with-buildroots-config
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for config_fragment in $config_fragments; do
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cat "$config_fragment" >> "$config_file"
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done
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printf "
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BR2_JLEVEL=${j}
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BR2_DL_DIR=\"${common_dir}/dl\"
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BR2_ROOTFS_POST_SCRIPT_ARGS=\"${post_script_args}\"
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" >> "$config_file"
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if "$gem5"; then
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printf "BR2_PACKAGE_GEM5=y\n" >> "${config_file}"
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fi
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kernel_config_fragment_dir=../kernel_config_fragment
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if [ -n "$linux_kernel_custom_config_file" ]; then
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if [ -f "$linux_kernel_custom_config_file" ]; then
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printf "BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y\nBR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE=\"${linux_kernel_custom_config_file}\"\n" >> "$config_file"
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if "${linux_reconfigure}"; then
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touch "${linux_kernel_custom_config_file}"
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fi
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else
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echo "error: -K: file does not exist: ${linux_kernel_custom_config_file}" 1>&2
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exit 1
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fi
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default_config_fragments=
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else
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default_config_fragments="${kernel_config_fragment_dir}/min ${kernel_config_fragment_dir}/default ${kernel_config_fragment_dir}/display"
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fi
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printf "BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES=\"${default_config_fragments} ${kernel_config_fragments} ${kernel_config_fragment_cli_file}\"\n" >> "$config_file"
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if "${linux_reconfigure}"; then
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# https://stackoverflow.com/questions/49260466/why-when-i-change-br2-linux-kernel-custom-config-file-and-run-make-linux-reconfi
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touch "${kernel_config_fragment_dir}/min"
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fi
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if [ "$arch" = 'mips64' ]; then
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# Workaround for: https://bugs.busybox.net/show_bug.cgi?id=10276
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sed -Ei 's/^BR2_PACKAGE_LINUX_TOOLS_GPIO/BR2_PACKAGE_LINUX_TOOLS_GPIO=n/' "$config_file"
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fi
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make O="$buildroot_out_dir" olddefconfig
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fi
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echo 'config time:'
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}
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echo
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common_mkdir
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# Manage Linux kernel variants.
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if [ -h "$common_linux_custom_dir" ]; then
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rm "$common_linux_custom_dir"
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elif [ -d "$common_linux_custom_dir" ]; then
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# Migration for existing builds.
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mv "$common_linux_custom_dir" "$common_linux_variant_dir"
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fi
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mkdir -p "$common_linux_variant_dir"
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ln -s "$common_linux_variant_dir" "$common_linux_custom_dir"
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# Manage gem5 variants.
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if "$gem5"; then
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if [ ! -e "${common_gem5_src_dir}/.git" ]; then
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git -C "$common_gem5_default_src_dir" worktree add -b "${common_gem5_variant}" "${common_gem5_src_dir}"
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fi
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fi
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cd "$buildroot_dir"
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# HOST_QEMU_OPTS is a hack that happens to work because the QEMU package luckly uses += at all times.
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# It shouldn't be necessary in the first place: https://bugs.busybox.net/show_bug.cgi?id=9936
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#
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# Even if were an autotools package, there is no general way currently to pass extra configs to it:
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# https://stackoverflow.com/questions/44341188/how-to-pass-extra-custom-configure-autotools-options-to-a-buildroot-package/44341225#44341225
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#
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# BR2_ options may be given on the command line here, and they do have direct "define" effects.
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# But this is generally bad, as it skips the Kconfig mechanism, e.g. it does not set defaults properly.
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cmd="time \\
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env \\
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-u LD_LIBRARY_PATH \\
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make \\
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O='${buildroot_out_dir}' \\
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HOST_QEMU_OPTS='--enable-debug --enable-trace-backends=simple ${qemu_sdl}' \\
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GEM5_LKMC_SRCDIR="$common_gem5_src_dir" \\
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GEM5_LKMC_OUTDIR="$common_gem5_out_dir" \\
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V='${v}' \\
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${extra_make_args} \
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all \\
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"
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"${root_dir}/eeval" "$cmd" "${out_arch_dir}/build.sh"
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