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README.md
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README.md
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# Chromebook Device Nyan NVIDIA Tegra K1 (T124) Linux for Tegra Userspace Package Builder (Ubuntu/Debian)
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## This Git repository is the home of the 'build_linux_for_tegra_userspace.sh' package builder tool.
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## Purpose
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'build_linux_for_tegra_userspace.sh' allows for the simplified and automated packaging of Linux for Tegra (L4T) 21.8 userspace libraries for use with NVIDIA Tegra K1 (T124) SoC Chromebooks.
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Note: The package builder does not support the NVIDIA Jetson TK1 development board.
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## Using the Package Builder
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At a minimum, the package builder requires the following flags to be appended:
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--package-maintainer <name>
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--package-maintainer-contact <email>
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Triple buffering is enabled by default in the X11 configuration file and is required to avoid artifacting in some cases, such as if the system is using the Mate desktop environment with the Compiz compositor
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To prevent triple buffering from being enabled in the X11 xserver configuration file, append the flag:
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--triple-buffering-is-disabled
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For debugging purposes and testing, the following flag allows the script to continue should there be any error:
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--disable-exit-on-error
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Note: It is not recommended for this flag to be appended for general use cases.
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A URL to the Linux for Tegra 21.8 userspace archive can be specified with:
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--linux-for-tegra-userspace-archive-url
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However, if no URL is specified to the package builder, it will use the following URL:
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https://developer.download.nvidia.com/embedded/L4T/r21_Release_v8.0/release_files/Tegra124_Linux_R21.8.0_armhf.tbz2
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If the '.deb' package file has been built successfully, it will be in the 'l4t-userspace-package' folder.
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Note: Each time the package builder is used, the folder 'l4t-userspace-package' (if it exists at runtime) and anything that was placed in the folder will be removed.
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## X11 Server Compatibility
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As of currently, the newest X11 server compatible with the Linux for Tegra (L4T) 21.8 graphics libraries is the 1.18 series. However, an upstream release of the X11 server with compatibility for the Linux for Tegra 21.8 graphics drivers.
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build_linux_for_tegra_userspace.sh
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build_linux_for_tegra_userspace.sh
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#!/bin/bash
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set -e
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DEB_FILE_OUTPUT="nvidia-l4t-driver-21.8-nyan_armhf"
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DEB_SOURCE_DIRECTORY="linux-for-tegra-userspace-deb-source"
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LINUX_FOR_TEGRA_FOLDER="Linux_for_Tegra"
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WORK_DIRECTORY="work-directory"
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APPLY_BINARIES_SCRIPT_FILE="apply_binaries.sh"
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LINUX_FOR_TEGRA_USERSPACE_PACKAGE_FILE_FOLDER="l4t-userspace-package"
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information() {
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echo "Flags: --disable-exit-on-error --package-maintainer <name> --package-maintainer-contact <email>"
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echo "--linux-for-tegra-userspace-archive-url <url> --triple-buffering-is-disabled"
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exit 1
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}
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if [ $# -eq 0 ]; then
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information
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fi
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--disable-exit-on-error)
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if [ -n "$2" ] && [[ "$2" != "--"* ]]; then
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echo "The build image utility will not exit regardless of reported errors"
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set +e
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shift 2
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else
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information
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fi
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;;
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--package-maintainer)
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if [ -n "$2" ] && [[ "$2" != "--"* ]]; then
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PACKAGE_MAINTAINER="$2"
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shift 2
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else
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information
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fi
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;;
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--package-maintainer-contact)
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if [ -n "$2" ] && [[ "$2" != "--"* ]]; then
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PACKAGE_MAINTAINER_CONTACT="$2"
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shift 2
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else
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information
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fi
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;;
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--linux-for-tegra-userspace-archive-url)
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if [ -n "$2" ] && [[ "$2" != "--"* ]]; then
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LINUX_FOR_TEGRA_URL="$2"
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shift 2
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else
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information
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fi
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;;
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--triple-buffering-is-disabled)
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TRIPLE_BUFFERING_IS_DISABLED="YES"
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shift
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;;
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*)
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echo "Invalid flag specified: $1"
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information
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;;
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esac
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done
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if [ -z "$PACKAGE_MAINTAINER" ]; then
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echo "No package maintainer was specified"
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PRELIMINARY_CHECK="FAIL"
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fi
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if [ -z "$PACKAGE_MAINTAINER_CONTACT" ]; then
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echo "No package maintainer email address contact was specified"
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PRELIMINARY_CHECK="FAIL"
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fi
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if type -P wget >/dev/null; then
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DOWNLOAD_COMMAND="wget"
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elif type -P curl >/dev/null; then
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DOWNLOAD_COMMAND="curl"
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else
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"Neither 'curl' nor 'wget' were found by the script"
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PRELIMINARY_CHECK="FAIL"
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fi
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if ! type -P dpkg-deb >/dev/null; then
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echo "The script could not find 'dpkg-deb'"
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PRELIMINARY_CHECK="FAIL"
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fi
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if [ "$PRELIMINARY_CHECK" == "FAIL" ]; then
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echo "One or more preliminary checks failed"
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exit 1
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fi
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if [ "$TRIPLE_BUFFERING_IS_DISABLED" == "YES" ]; then
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echo "The package builder will not enable triple buffering in the X11 server configuration file"
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fi
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if [ ${EUID: -0} -ne 0 ] || [ "$(id -u)" -ne 0 ]; then
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sudo -v
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while true; do sudo -n true; sleep 60; kill -0 "$$" || exit; done 2>/dev/null &
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PRIVILEGE_ESCALATION_COMMAND="sudo"
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fi
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if [ -d "$LINUX_FOR_TEGRA_USERSPACE_PACKAGE_FILE_FOLDER" ]; then
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rm -rf "$LINUX_FOR_TEGRA_USERSPACE_PACKAGE_FILE_FOLDER"
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fi
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if [ -d "$WORK_DIRECTORY" ]; then
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"$PRIVILEGE_ESCALATION_COMMAND" rm -rf "$WORK_DIRECTORY"
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fi
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mkdir "$WORK_DIRECTORY"
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mkdir "$LINUX_FOR_TEGRA_USERSPACE_PACKAGE_FILE_FOLDER"
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cd "$WORK_DIRECTORY"
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echo "Preparing deb source tree"
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mkdir -p "$DEB_SOURCE_DIRECTORY"/DEBIAN
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echo
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echo "Downloading NVIDIA Linux for Tegra (L4T) 21.8 userspace software and drivers"
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echo -e "\n"
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if [ -z "$LINUX_FOR_TEGRA_URL" ]; then
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LINUX_FOR_TEGRA_URL=https://developer.download.nvidia.com/embedded/L4T/r21_Release_v8.0/release_files/Tegra124_Linux_R21.8.0_armhf.tbz2
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LINUX_FOR_TEGRA_ARCHIVE_FILE="$(basename "$LINUX_FOR_TEGRA_URL")"
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fi
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"$DOWNLOAD_COMMAND" "$LINUX_FOR_TEGRA_URL"
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echo -e "\n"
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echo "Extracting NVIDIA Linux for Tegra (L4T) archive"
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echo
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tar -xf "$LINUX_FOR_TEGRA_ARCHIVE_FILE" -v
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echo
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echo "Installing Linux for Tegra (L4T) userspace software and drivers to deb source tree"
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echo
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cd "$LINUX_FOR_TEGRA_FOLDER"
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"$PRIVILEGE_ESCALATION_COMMAND" ./"$APPLY_BINARIES_SCRIPT_FILE" -r ../"$DEB_SOURCE_DIRECTORY"
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cd ../"$DEB_SOURCE_DIRECTORY"
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echo
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echo "Preparing installed userspace files"
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echo
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"$PRIVILEGE_ESCALATION_COMMAND" mkdir -p etc/X11/xorg.conf.d
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"$PRIVILEGE_ESCALATION_COMMAND" mv etc/X11/xorg.conf etc/X11/xorg.conf.d/20-tegra.conf -v
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"$PRIVILEGE_ESCALATION_COMMAND" mv home/ubuntu/tegrastats usr/bin -v
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"$PRIVILEGE_ESCALATION_COMMAND" chmod +x usr/bin/tegrastats
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"$PRIVILEGE_ESCALATION_COMMAND" rm -rf boot home etc/{nv,pulse,systemd,modules,init,ld.so.conf.d,sysctl.d/10-console-messages.conf} usr/lib/arm-linux-gnueabihf/tegra-egl/ld.so.conf lib/firmware/{nvavp_os_f7e00000.bin,tegra_xusb_firmware} lib/modules usr/src etc/{fstab,wpa_supplicant.conf,asound.conf*} etc/udev/rules.d/{90,91,92,99-tegra-mmc-ra,99-nv-wifibt}*.rules etc/X11/xorg.conf.jetson-tk1 -v
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echo "/usr/lib/arm-linux-gnueabihf/tegra" | "$PRIVILEGE_ESCALATION_COMMAND" tee usr/lib/arm-linux-gnueabihf/tegra/ld.so.conf
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echo "/usr/lib/arm-linux-gnueabihf/tegra-egl" | "$PRIVILEGE_ESCALATION_COMMAND" tee usr/lib/arm-linux-gnueabihf/tegra-egl/ld.so.conf
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if [ "$TRIPLE_BUFFERING_IS_DISABLED" != "YES" ]; then
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"$PRIVILEGE_ESCALATION_COMMAND" sed -i '/Section "Device"/,/EndSection/{/EndSection/i\
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Option "TripleBuffer" "true"
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}' etc/X11/xorg.conf.d/20-tegra.conf
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else
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echo "Triple buffering will not be enabled in the X11 server config"
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echo "Skipping the triple buffering enablement setup"
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fi
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echo
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echo "Writing Debian postinst script"
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cat << 'EOF' > DEBIAN/postinst
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update-alternatives --install /etc/ld.so.conf.d/000-arm-linux-gnueabihf_GL.conf arm-linux-gnueabihf_gl_conf /usr/lib/arm-linux-gnueabihf/tegra/ld.so.conf 1000
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update-alternatives --install /etc/ld.so.conf.d/001-arm-linux-gnueabihf_EGL.conf arm-linux-gnueabihf_egl_conf /usr/lib/arm-linux-gnueabihf/tegra-egl/ld.so.conf 1000
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if [ -e "/usr/lib/arm-linux-gnueabihf/tegra/libglx.so" ]; then
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ln -sf /usr/lib/arm-linux-gnueabihf/tegra/libglx.so /usr/lib/xorg/modules/extensions/libglx.so
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fi
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ldconfig
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EOF
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chmod +x DEBIAN/postinst
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echo
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echo "Writing Debian control file"
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cat << 'EOF' > DEBIAN/control
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Package: nvidia-l4t-driver-21-nyan
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Version: 21.8
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Architecture: armhf
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Maintainer: MAINTAINER_IDENTIFIER <MAINTAINER_EMAIL_IDENTIFIER>
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Depends: xserver-xorg-core, acpid
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Section: non-free/libs
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Priority: optional
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Homepage: http://www.nvidia.com
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Description: NVIDIA Linux for Tegra (L4T) driver package for the ChromeOS Nyan device platform
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This package contains the NVIDIA Linux for Tegra (L4T) binary driver and all of its libraries,
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optimized for the ChromeOS Nyan device platform to provide hardware acceleration for
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OpenGL/GLX/EGL/GLES applications on X11.
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EOF
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sed -i "s/MAINTAINER_IDENTIFIER/$PACKAGE_MAINTAINER/g" "DEBIAN/control"
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sed -i "s/MAINTAINER_EMAIL_IDENTIFIER/$PACKAGE_MAINTAINER_CONTACT/g" "DEBIAN/control"
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echo
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echo "Creating the .deb package containing the NVIDIA Linux for Tegra (L4T) 21.8 proprietary userspace software and drivers"
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cd ..
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dpkg-deb --build --root-owner-group "$DEB_SOURCE_DIRECTORY" ../"$LINUX_FOR_TEGRA_USERSPACE_PACKAGE_FILE_FOLDER"/"$DEB_FILE_OUTPUT".deb
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cd ..
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"$PRIVILEGE_ESCALATION_COMMAND" rm -rf "$WORK_DIRECTORY"
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echo
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if [ -f "$LINUX_FOR_TEGRA_USERSPACE_PACKAGE_FILE_FOLDER"/"$DEB_FILE_OUTPUT".deb ]; then
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echo "The NVIDIA Linux for Tegra (L4T) 21.8 userspace software and drivers package for Chromebook device Nyan was created successfully"
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exit 0
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else
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echo "The NVIDIA Linux for Tegra (L4T) 21.8 userspace software and drivers package for Chromebook device Nyan was not created successfully: linux-firmware-nyan_armhf.deb"
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rm -rf "$LINUX_FOR_TEGRA_USERSPACE_PACKAGE_FILE_FOLDER"
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exit 1
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fi
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