cross-compile on OSX

00_cross_compile_on_osx.md

Cross Compile with OSX as a host

compile crosstool-ng

One debian systems, there are pre-compiled toolchains, for OSX however they have to be built from scratch. A decent tool for creating such toolchains is crosstool-ng.

Compilation Note there's a problem with having ncurses installed via homebrew. Add the libs and include paths to LDFLAGS/CXXFLAGS before the configure step For python problems on gdb, see https://stackoverflow.com/a/11600411/4583130

crosstool-ng works similar to linux kernel configurations. A complete example can be found below 01_aarch64-unknown-linux-gnu.config . Execution Note the tool requires a case-sensitive filesystem. OSX is not case-sensitive by default. So we have to create a new Volume which is:

#!/bin/bash
ImageName=CrossToolNG
ImageNameExt=${ImageName}.sparseimage
diskutil umount force /Volumes/${ImageName} && true
rm -f ${ImageNameExt} && true
hdiutil create ${ImageName} -volname ${ImageName} -type SPARSE -size 8g -fs HFSX
hdiutil mount ${ImageNameExt}
cd /Volumes/$ImageName

Found here: https://docs.zephyrproject.org/1.9.0/getting_started/installation_mac.html#creating-a-case-sensitive-file-system

Once the configuration is built correctly (use samples and modify them for the correct version), the folder layout looks as follows:

 ➭ ll ~/workspace/toolchains/x86_64/gcc-7.5/x86_64-unknown-linux-gnu
total 4096
dr-xr-xr-x   9 karsten  staff      288 Oct 16 00:54 ./
drwxr-xr-x   5 karsten  staff      160 Oct 19 11:49 ../
dr-xr-xr-x  37 karsten  staff     1184 Oct 16 00:53 bin/
-r--r--r--   1 karsten  staff  2095985 Oct 16 00:53 build.log.bz2
dr-xr-xr-x   2 karsten  staff       64 Oct 16 00:49 include/
dr-xr-xr-x   7 karsten  staff      224 Oct 16 00:49 lib/
dr-xr-xr-x   3 karsten  staff       96 Oct 16 00:49 libexec/
dr-xr-xr-x   5 karsten  staff      160 Oct 16 00:53 share/
dr-xr-xr-x   8 karsten  staff      256 Oct 16 00:49 x86_64-unknown-linux-gnu/

cross compile with clang

one does not have to cross-compile with a special created gcc compiler. Clang itself (the one on the host platoform) is by defualt a cross compiler. once the toolchain is created with clang, it requires two arguments set, i.e. sysroot and gcc-toolchain.

[ 50%] Building CXX object CMakeFiles/karsten_hello_world.dir/main.cpp.o
/usr/local/opt/ccache/libexec/clang++ --target=x86_64-unknown-linux-gnu --sysroot=/Users/karsten/workspace/toolchains/x86_64/gcc-7.5/x86_64-unknown-linux-gnu/x86_64-unknown-linux-gnu/sysroot   --gcc-toolchain=/Users/karsten/workspace/toolchains/x86_64/gcc-7.5/x86_64-unknown-linux-gnu/x86_64-unknown-linux-gnu/sysroot/../.. -o CMakeFiles/karsten_hello_world.dir/main.cpp.o -c /Users/karsten/workspace/ctrlx/snap_ws/ctrlx_hello_world/main.cpp
[100%] Linking CXX executable karsten_hello_world
/usr/local/Cellar/cmake/3.18.4/bin/cmake -E cmake_link_script CMakeFiles/karsten_hello_world.dir/link.txt --verbose=1
/usr/local/opt/ccache/libexec/clang++ --target=x86_64-unknown-linux-gnu --sysroot=/Users/karsten/workspace/toolchains/x86_64/gcc-7.5/x86_64-unknown-linux-gnu/x86_64-unknown-linux-gnu/sysroot --gcc-toolchain=/Users/karsten/workspace/toolchains/x86_64/gcc-7.5/x86_64-unknown-linux-gnu/x86_64-unknown-linux-gnu/sysroot/../.. -L/usr/local/opt/llvm/lib -Wl,-rpath,/usr/local/opt/llvm/lib -fuse-ld=lld CMakeFiles/karsten_hello_world.dir/main.cpp.o -o karsten_hello_world
[100%] Built target karsten_hello_world
/usr/local/Cellar/cmake/3.18.4/bin/cmake -E cmake_progress_start /Users/karsten/workspace/ctrlx/snap_ws/ctrlx_hello_world/build/CMakeFiles 0

The equivalent cmake toolchain file:

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR x86_64)

set(CMAKE_SYSROOT /Users/karsten/workspace/toolchains/x86_64/gcc-7.5/x86_64-unknown-linux-gnu/x86_64-unknown-linux-gnu/sysroot)
set(CMAKE_CXX_FLAGS_INIT "--gcc-toolchain=${CMAKE_SYSROOT}/../..")
set(CMAKE_C_FLAGS_INIT "--gcc-toolchain=${CMAKE_SYSROOT}/../..")

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

set(triple x86_64-unknown-linux-gnu)

set(CMAKE_C_COMPILER clang)
set(CMAKE_C_COMPILER_TARGET ${triple})
set(CMAKE_CXX_COMPILER clang++)
set(CMAKE_CXX_COMPILER_TARGET ${triple})

Cross Compile ROS2

Used toolchain file being used is in the file below: 02_aarch64_toolchain.cmake in comibination with a aarch64-unknown-linux-gnu toolchain generated by crosstool-ng.

Compile Python

We need to cross-compile Python and enhance our toolchain with this:

wget -c https://www.python.org/ftp/python/3.8.6/Python-3.8.6.tar.xz

PATH=~/workspace/toolchains/aarch64/aarch64-unknown-linux-gnu/bin:$PATH ./configure CC=aarch64-unknown-linux-gnu-gcc CXX=aarch64-unknown-linux-gnu-g++ AR=aarch64-unknown-linux-gnu-ar LD=aarch64-unknown-linux-gnu-ld RANLIB=aarch64-unknown-linux-gnu-ranlib --host=aarch64-unknown-linux-gnu --build=x86_64-apple-darwin18 --target=aarch64 -prefix=`pwd`/python3_install --disable-ipv6 ac_cv_have_long_long_format=yes ac_cv_file__dev_ptmx=no ac_cv_file__dev_ptc=no --enable-shared --enable-optimizations && make && make install

We then have to integrate these files into our crosstool-ng toolchain sysroot folder. I would assume that's the same as specifying the toolchain sysroot as a --prefix in the configure step above.

cp -r ~/workspace/ros2/ros2_cross_compile/third_party/python3.8.6/Python-3.8.6/python3_install/bin/* bin/
cp -r ~/workspace/ros2/ros2_cross_compile/third_party/python3.8.6/Python-3.8.6/python3_install/lib/* lib/
cp -r ~/workspace/ros2/ros2_cross_compile/third_party/python3.8.6/Python-3.8.6/python3_install/include/* include/
cp -r ~/workspace/ros2/ros2_cross_compile/third_party/python3.8.6/Python-3.8.6/python3_install/share/* share/

Compile TinyXml2, libexpat, logging-log4cxx

The three packages listed above are all cmake-based packages and can thus conveniently be installed via colcon.

Compile a ROS2 workspace

Foonathan memory can't really be cross-compiled, cyclone_dds is easier. So we skip fastrtps and their dependencies. There is some code generation for cyclonedds needed as well. For this, the ddsconf tool has to be executed from the host. Luckily, cyclonedds lets you easily pass in that tool via -DDDSCONF_EXECUTABLE.

colcon build --merge-install --build-base build_aarch64 --install-base install_aarch64 --event-handler=console_cohesion+  --cmake-args -DBUILD_TESTING=OFF -DCMAKE_TOOLCHAIN_FILE=~/workspace/toolchains/aarch64/aarch64_toolchain.cmake -DDDSCONF_EXECUTABLE=/Users/karsten/workspace/ros2/ros2_cross_compile/tmp/cyclonedds/build/bin/ddsconf --packages-ignore fastrtps rmw_fastrtps_shared_cpp rmw_fastrtps_cpp rmw_fastrtps_dynamic_cpp foonathan_memory_vendor rosidl_typesupport_fastrtps_cpp rosidl_typesupport_fastrtps_c --cmake-clean-ca --packages-up-to examples_rclcpp_minimal_publisher

01_x86_64-unknown-linux-gnu.config

target architecture, gcc and binutils have been modified to match target system.
 
 ➭ cat .config
#
# Automatically generated file; DO NOT EDIT.
# crosstool-NG  Configuration
#
CT_CONFIGURE_has_cxx11=y
CT_CONFIGURE_has_wget=y
CT_CONFIGURE_has_curl=y
CT_CONFIGURE_has_make_3_81_or_newer=y
CT_CONFIGURE_has_libtool_2_4_or_newer=y
CT_CONFIGURE_has_libtoolize_2_4_or_newer=y
CT_CONFIGURE_has_autoconf_2_65_or_newer=y
CT_CONFIGURE_has_autoreconf_2_65_or_newer=y
CT_CONFIGURE_has_automake_1_15_or_newer=y
CT_CONFIGURE_has_python_3_4_or_newer=y
CT_CONFIGURE_has_python=y
CT_CONFIGURE_has_svn=y
CT_CONFIGURE_has_git=y
CT_CONFIGURE_has_md5sum=y
CT_CONFIGURE_has_sha1sum=y
CT_CONFIGURE_has_sha256sum=y
CT_CONFIGURE_has_sha512sum=y
CT_CONFIGURE_has_install_with_strip_program=y
CT_CONFIG_VERSION_CURRENT="3"
CT_CONFIG_VERSION="3"
CT_MODULES=y

#
# Paths and misc options
#

#
# crosstool-NG behavior
#
# CT_OBSOLETE is not set
# CT_EXPERIMENTAL is not set
# CT_DEBUG_CT is not set

#
# Paths
#
CT_LOCAL_TARBALLS_DIR="${HOME}/workspace/toolchains/downloaded_components"
CT_SAVE_TARBALLS=y
# CT_TARBALLS_BUILDROOT_LAYOUT is not set
CT_WORK_DIR="${CT_TOP_DIR}/.build"
CT_BUILD_TOP_DIR="${CT_WORK_DIR:-${CT_TOP_DIR}/.build}/${CT_HOST:+HOST-${CT_HOST}/}${CT_TARGET}"
CT_BUILD_DIR="${CT_BUILD_TOP_DIR}/build"
CT_PREFIX_DIR="${CT_PREFIX:-${PWD}/x-tools}/${CT_HOST:+HOST-${CT_HOST}/}${CT_TARGET}"
CT_RM_RF_PREFIX_DIR=y
CT_REMOVE_DOCS=y
CT_INSTALL_LICENSES=y
CT_PREFIX_DIR_RO=y
CT_STRIP_HOST_TOOLCHAIN_EXECUTABLES=y
# CT_STRIP_TARGET_TOOLCHAIN_EXECUTABLES is not set

#
# Downloading
#
CT_DOWNLOAD_AGENT_WGET=y
# CT_DOWNLOAD_AGENT_CURL is not set
# CT_DOWNLOAD_AGENT_NONE is not set
# CT_FORBID_DOWNLOAD is not set
# CT_FORCE_DOWNLOAD is not set
CT_CONNECT_TIMEOUT=10
CT_DOWNLOAD_WGET_OPTIONS="--passive-ftp --tries=3 -nc --progress=dot:binary"
# CT_ONLY_DOWNLOAD is not set
# CT_USE_MIRROR is not set
CT_VERIFY_DOWNLOAD_DIGEST=y
CT_VERIFY_DOWNLOAD_DIGEST_SHA512=y
# CT_VERIFY_DOWNLOAD_DIGEST_SHA256 is not set
# CT_VERIFY_DOWNLOAD_DIGEST_SHA1 is not set
# CT_VERIFY_DOWNLOAD_DIGEST_MD5 is not set
CT_VERIFY_DOWNLOAD_DIGEST_ALG="sha512"
# CT_VERIFY_DOWNLOAD_SIGNATURE is not set

#
# Extracting
#
# CT_FORCE_EXTRACT is not set
CT_OVERRIDE_CONFIG_GUESS_SUB=y
# CT_ONLY_EXTRACT is not set
CT_PATCH_BUNDLED=y
# CT_PATCH_BUNDLED_LOCAL is not set
CT_PATCH_ORDER="bundled"

#
# Build behavior
#
CT_PARALLEL_JOBS=0
CT_LOAD=""
CT_USE_PIPES=y
CT_EXTRA_CFLAGS_FOR_BUILD=""
CT_EXTRA_LDFLAGS_FOR_BUILD=""
CT_EXTRA_CFLAGS_FOR_HOST=""
CT_EXTRA_LDFLAGS_FOR_HOST=""
# CT_CONFIG_SHELL_SH is not set
# CT_CONFIG_SHELL_ASH is not set
CT_CONFIG_SHELL_BASH=y
# CT_CONFIG_SHELL_CUSTOM is not set
CT_CONFIG_SHELL="${bash}"

#
# Logging
#
# CT_LOG_ERROR is not set
# CT_LOG_WARN is not set
# CT_LOG_INFO is not set
CT_LOG_EXTRA=y
# CT_LOG_ALL is not set
# CT_LOG_DEBUG is not set
CT_LOG_LEVEL_MAX="EXTRA"
# CT_LOG_SEE_TOOLS_WARN is not set
CT_LOG_PROGRESS_BAR=y
CT_LOG_TO_FILE=y
CT_LOG_FILE_COMPRESS=y

#
# Target options
#
# CT_ARCH_ALPHA is not set
# CT_ARCH_ARC is not set
# CT_ARCH_ARM is not set
# CT_ARCH_AVR is not set
# CT_ARCH_M68K is not set
# CT_ARCH_MIPS is not set
# CT_ARCH_NIOS2 is not set
# CT_ARCH_POWERPC is not set
# CT_ARCH_S390 is not set
# CT_ARCH_SH is not set
# CT_ARCH_SPARC is not set
CT_ARCH_X86=y
# CT_ARCH_XTENSA is not set
CT_ARCH="x86"
CT_ARCH_CHOICE_KSYM="X86"
CT_ARCH_CPU=""
CT_ARCH_TUNE=""
CT_ARCH_X86_SHOW=y

#
# Options for x86
#
CT_ARCH_X86_PKG_KSYM=""
CT_ALL_ARCH_CHOICES="ALPHA ARC ARM AVR M68K MICROBLAZE MIPS MOXIE MSP430 NIOS2 POWERPC RISCV S390 SH SPARC X86 XTENSA"
CT_ARCH_SUFFIX=""
# CT_OMIT_TARGET_VENDOR is not set

#
# Generic target options
#
# CT_MULTILIB is not set
CT_DEMULTILIB=y
CT_ARCH_USE_MMU=y
CT_ARCH_SUPPORTS_32=y
CT_ARCH_SUPPORTS_64=y
CT_ARCH_DEFAULT_32=y
CT_ARCH_BITNESS=64
# CT_ARCH_32 is not set
CT_ARCH_64=y
CT_ARCH_SUPPORTS_WITH_32_64=y

#
# Target optimisations
#
CT_ARCH_SUPPORTS_WITH_ARCH=y
CT_ARCH_SUPPORTS_WITH_CPU=y
CT_ARCH_SUPPORTS_WITH_TUNE=y
CT_ARCH_ARCH=""
CT_TARGET_CFLAGS=""
CT_TARGET_LDFLAGS=""

#
# Toolchain options
#

#
# General toolchain options
#
CT_FORCE_SYSROOT=y
CT_USE_SYSROOT=y
CT_SYSROOT_NAME="sysroot"
CT_SYSROOT_DIR_PREFIX=""
CT_SHOW_CT_VERSION=y
CT_TOOLCHAIN_PKGVERSION=""
CT_TOOLCHAIN_BUGURL=""

#
# Tuple completion and aliasing
#
CT_TARGET_VENDOR="unknown"
CT_TARGET_ALIAS_SED_EXPR=""
CT_TARGET_ALIAS=""

#
# Toolchain type
#
CT_CROSS=y
# CT_CANADIAN is not set
CT_TOOLCHAIN_TYPE="cross"

#
# Build system
#
CT_BUILD=""
CT_BUILD_PREFIX=""
CT_BUILD_SUFFIX=""

#
# Misc options
#
# CT_TOOLCHAIN_ENABLE_NLS is not set

#
# Operating System
#
CT_KERNEL_SUPPORTS_SHARED_LIBS=y
# CT_KERNEL_BARE_METAL is not set
CT_KERNEL_LINUX=y
CT_KERNEL="linux"
CT_KERNEL_CHOICE_KSYM="LINUX"
CT_KERNEL_LINUX_SHOW=y

#
# Options for linux
#
CT_KERNEL_LINUX_PKG_KSYM="LINUX"
CT_LINUX_DIR_NAME="linux"
CT_LINUX_PKG_NAME="linux"
CT_LINUX_SRC_RELEASE=y
CT_LINUX_PATCH_ORDER="global"
# CT_LINUX_V_5_8 is not set
# CT_LINUX_V_5_7 is not set
# CT_LINUX_V_5_4 is not set
CT_LINUX_V_5_4=y
# CT_LINUX_V_5_3 is not set
# CT_LINUX_V_5_2 is not set
# CT_LINUX_V_5_1 is not set
# CT_LINUX_V_5_0 is not set
# CT_LINUX_V_4_20 is not set
# CT_LINUX_V_4_19 is not set
# CT_LINUX_V_4_18 is not set
# CT_LINUX_V_4_17 is not set
# CT_LINUX_V_4_16 is not set
# CT_LINUX_V_4_15 is not set
# CT_LINUX_V_4_14 is not set
# CT_LINUX_V_4_13 is not set
# CT_LINUX_V_4_12 is not set
# CT_LINUX_V_4_11 is not set
# CT_LINUX_V_4_10 is not set
# CT_LINUX_V_4_9 is not set
# CT_LINUX_V_4_4 is not set
# CT_LINUX_V_4_1 is not set
# CT_LINUX_V_3_16 is not set
# CT_LINUX_V_3_13 is not set
# CT_LINUX_V_3_12 is not set
# CT_LINUX_V_3_10 is not set
# CT_LINUX_V_3_4 is not set
# CT_LINUX_V_3_2 is not set
# CT_LINUX_NO_VERSIONS is not set
CT_LINUX_VERSION="5.4.47"
CT_LINUX_MIRRORS="$(CT_Mirrors kernel.org linux ${CT_LINUX_VERSION})"
CT_LINUX_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_LINUX_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_LINUX_ARCHIVE_FORMATS=".tar.xz .tar.gz"
CT_LINUX_SIGNATURE_FORMAT="unpacked/.sign"
CT_LINUX_later_than_4_8=y
CT_LINUX_4_8_or_later=y
CT_LINUX_later_than_3_7=y
CT_LINUX_3_7_or_later=y
CT_LINUX_later_than_3_2=y
CT_LINUX_3_2_or_later=y
CT_LINUX_REQUIRE_3_2_or_later=y
CT_KERNEL_LINUX_VERBOSITY_0=y
# CT_KERNEL_LINUX_VERBOSITY_1 is not set
# CT_KERNEL_LINUX_VERBOSITY_2 is not set
CT_KERNEL_LINUX_VERBOSE_LEVEL=0
CT_KERNEL_LINUX_INSTALL_CHECK=y
CT_ALL_KERNEL_CHOICES="BARE_METAL LINUX WINDOWS"

#
# Common kernel options
#
CT_SHARED_LIBS=y

#
# Binary utilities
#
CT_ARCH_BINFMT_ELF=y
CT_BINUTILS_BINUTILS=y
CT_BINUTILS="binutils"
CT_BINUTILS_CHOICE_KSYM="BINUTILS"
CT_BINUTILS_BINUTILS_SHOW=y

#
# Options for binutils
#
CT_BINUTILS_BINUTILS_PKG_KSYM="BINUTILS"
CT_BINUTILS_DIR_NAME="binutils"
CT_BINUTILS_USE_GNU=y
CT_BINUTILS_USE="BINUTILS"
CT_BINUTILS_PKG_NAME="binutils"
CT_BINUTILS_SRC_RELEASE=y
CT_BINUTILS_PATCH_ORDER="global"
#CT_BINUTILS_V_2_35=y
# CT_BINUTILS_V_2_34 is not set
# CT_BINUTILS_V_2_33 is not set
# CT_BINUTILS_V_2_32 is not set
# CT_BINUTILS_V_2_31 is not set
# CT_BINUTILS_V_2_30 is not set
CT_BINUTILS_V_2_30=y
# CT_BINUTILS_V_2_29 is not set
# CT_BINUTILS_V_2_28 is not set
# CT_BINUTILS_V_2_27 is not set
# CT_BINUTILS_V_2_26 is not set
# CT_BINUTILS_NO_VERSIONS is not set
CT_BINUTILS_VERSION="2.30"
CT_BINUTILS_MIRRORS="$(CT_Mirrors GNU binutils) $(CT_Mirrors sourceware binutils/releases)"
CT_BINUTILS_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_BINUTILS_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_BINUTILS_ARCHIVE_FORMATS=".tar.xz .tar.bz2 .tar.gz"
CT_BINUTILS_SIGNATURE_FORMAT="packed/.sig"
CT_BINUTILS_later_than_2_30=y
CT_BINUTILS_2_30_or_later=y
CT_BINUTILS_later_than_2_27=y
CT_BINUTILS_2_27_or_later=y
CT_BINUTILS_later_than_2_25=y
CT_BINUTILS_2_25_or_later=y
CT_BINUTILS_REQUIRE_2_25_or_later=y
CT_BINUTILS_later_than_2_23=y
CT_BINUTILS_2_23_or_later=y

#
# GNU binutils
#
CT_BINUTILS_HAS_HASH_STYLE=y
CT_BINUTILS_HAS_GOLD=y
CT_BINUTILS_HAS_PLUGINS=y
CT_BINUTILS_HAS_PKGVERSION_BUGURL=y
CT_BINUTILS_GOLD_SUPPORTS_ARCH=y
CT_BINUTILS_GOLD_SUPPORT=y
CT_BINUTILS_FORCE_LD_BFD_DEFAULT=y
# CT_BINUTILS_LINKER_LD is not set
CT_BINUTILS_LINKER_LD_GOLD=y
CT_BINUTILS_GOLD_INSTALLED=y
CT_BINUTILS_GOLD_THREADS=y
CT_BINUTILS_LINKER_BOTH=y
CT_BINUTILS_LINKERS_LIST="ld,gold"
CT_BINUTILS_LD_WRAPPER=y
CT_BINUTILS_LINKER_DEFAULT="bfd"
CT_BINUTILS_PLUGINS=y
CT_BINUTILS_RELRO=m
CT_BINUTILS_DETERMINISTIC_ARCHIVES=y
CT_BINUTILS_EXTRA_CONFIG_ARRAY=""
# CT_BINUTILS_FOR_TARGET is not set
CT_ALL_BINUTILS_CHOICES="BINUTILS"

#
# C-library
#
CT_LIBC_GLIBC=y
# CT_LIBC_UCLIBC is not set
CT_LIBC="glibc"
CT_LIBC_CHOICE_KSYM="GLIBC"
CT_THREADS="nptl"
CT_LIBC_GLIBC_SHOW=y

#
# Options for glibc
#
CT_LIBC_GLIBC_PKG_KSYM="GLIBC"
CT_GLIBC_DIR_NAME="glibc"
CT_GLIBC_USE_GNU=y
CT_GLIBC_USE="GLIBC"
CT_GLIBC_PKG_NAME="glibc"
CT_GLIBC_SRC_RELEASE=y
CT_GLIBC_PATCH_ORDER="global"
# CT_GLIBC_V_2_32=y
# CT_GLIBC_V_2_31 is not set
# CT_GLIBC_V_2_30 is not set
# CT_GLIBC_V_2_29 is not set
# CT_GLIBC_V_2_28 is not set
# CT_GLIBC_V_2_27 is not set
CT_GLIBC_V_2_27=y
# CT_GLIBC_V_2_26 is not set
# CT_GLIBC_V_2_25 is not set
# CT_GLIBC_V_2_24 is not set
# CT_GLIBC_V_2_23 is not set
# CT_GLIBC_V_2_19 is not set
# CT_GLIBC_V_2_17 is not set
# CT_GLIBC_V_2_12_1 is not set
# CT_GLIBC_NO_VERSIONS is not set
CT_GLIBC_VERSION="2.27"
CT_GLIBC_MIRRORS="$(CT_Mirrors GNU glibc)"
CT_GLIBC_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_GLIBC_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_GLIBC_ARCHIVE_FORMATS=".tar.xz .tar.bz2 .tar.gz"
CT_GLIBC_SIGNATURE_FORMAT="packed/.sig"
CT_GLIBC_2_32_or_later=y
CT_GLIBC_2_32_or_older=y
CT_GLIBC_later_than_2_30=y
CT_GLIBC_2_30_or_later=y
CT_GLIBC_later_than_2_29=y
CT_GLIBC_2_29_or_later=y
CT_GLIBC_later_than_2_28=y
CT_GLIBC_2_28_or_later=y
CT_GLIBC_later_than_2_27=y
CT_GLIBC_2_27_or_later=y
CT_GLIBC_later_than_2_26=y
CT_GLIBC_2_26_or_later=y
CT_GLIBC_later_than_2_25=y
CT_GLIBC_2_25_or_later=y
CT_GLIBC_later_than_2_24=y
CT_GLIBC_2_24_or_later=y
CT_GLIBC_later_than_2_23=y
CT_GLIBC_2_23_or_later=y
CT_GLIBC_later_than_2_20=y
CT_GLIBC_2_20_or_later=y
CT_GLIBC_later_than_2_17=y
CT_GLIBC_2_17_or_later=y
CT_GLIBC_later_than_2_14=y
CT_GLIBC_2_14_or_later=y
CT_GLIBC_DEP_KERNEL_HEADERS_VERSION=y
CT_GLIBC_DEP_BINUTILS=y
CT_GLIBC_DEP_GCC=y
CT_GLIBC_DEP_BISON=y
CT_GLIBC_DEP_PYTHON=y
CT_GLIBC_DEP_MAKE_4_0=y
CT_GLIBC_BUILD_SSP=y
CT_GLIBC_HAS_LIBIDN_ADDON=y
# CT_GLIBC_USE_LIBIDN_ADDON is not set
CT_GLIBC_NO_SPARC_V8=y
CT_GLIBC_HAS_OBSOLETE_RPC=y
CT_GLIBC_EXTRA_CONFIG_ARRAY=""
CT_GLIBC_CONFIGPARMS=""
CT_GLIBC_EXTRA_CFLAGS=""
CT_GLIBC_ENABLE_OBSOLETE_RPC=y
# CT_GLIBC_DISABLE_VERSIONING is not set
CT_GLIBC_OLDEST_ABI=""
CT_GLIBC_FORCE_UNWIND=y
# CT_GLIBC_LOCALES is not set
CT_GLIBC_KERNEL_VERSION_NONE=y
# CT_GLIBC_KERNEL_VERSION_AS_HEADERS is not set
# CT_GLIBC_KERNEL_VERSION_CHOSEN is not set
CT_GLIBC_MIN_KERNEL=""
CT_GLIBC_SSP_DEFAULT=y
# CT_GLIBC_SSP_NO is not set
# CT_GLIBC_SSP_YES is not set
# CT_GLIBC_SSP_ALL is not set
# CT_GLIBC_SSP_STRONG is not set
CT_GLIBC_ENABLE_WERROR=y
CT_ALL_LIBC_CHOICES="AVR_LIBC BIONIC GLIBC MINGW_W64 MOXIEBOX MUSL NEWLIB NONE PICOLIBC UCLIBC"
CT_LIBC_SUPPORT_THREADS_ANY=y
CT_LIBC_SUPPORT_THREADS_NATIVE=y

#
# Common C library options
#
CT_THREADS_NATIVE=y
# CT_CREATE_LDSO_CONF is not set
CT_LIBC_XLDD=y

#
# C compiler
#
CT_CC_CORE_PASSES_NEEDED=y
CT_CC_CORE_PASS_1_NEEDED=y
CT_CC_CORE_PASS_2_NEEDED=y
CT_CC_SUPPORT_CXX=y
CT_CC_SUPPORT_FORTRAN=y
CT_CC_SUPPORT_ADA=y
CT_CC_SUPPORT_OBJC=y
CT_CC_SUPPORT_OBJCXX=y
CT_CC_SUPPORT_GOLANG=y
CT_CC_GCC=y
CT_CC="gcc"
CT_CC_CHOICE_KSYM="GCC"
CT_CC_GCC_SHOW=y

#
# Options for gcc
#
CT_CC_GCC_PKG_KSYM="GCC"
CT_GCC_DIR_NAME="gcc"
CT_GCC_USE_GNU=y
CT_GCC_USE="GCC"
CT_GCC_PKG_NAME="gcc"
CT_GCC_SRC_RELEASE=y
CT_GCC_PATCH_ORDER="global"
#CT_GCC_V_10=y
# CT_GCC_V_9 is not set
# CT_GCC_V_8 is not set
CT_GCC_V_7=y
# CT_GCC_V_6 is not set
# CT_GCC_NO_VERSIONS is not set
CT_GCC_VERSION="7.5.0"
CT_GCC_MIRRORS="$(CT_Mirrors GNU gcc/gcc-${CT_GCC_VERSION}) $(CT_Mirrors sourceware gcc/releases/gcc-${CT_GCC_VERSION})"
CT_GCC_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_GCC_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_GCC_ARCHIVE_FORMATS=".tar.xz .tar.gz"
CT_GCC_SIGNATURE_FORMAT=""
CT_GCC_later_than_8=y
CT_GCC_8_or_later=y
CT_GCC_later_than_7=y
CT_GCC_7_or_later=y
CT_GCC_later_than_6=y
CT_GCC_6_or_later=y
CT_GCC_REQUIRE_6_or_later=y
CT_GCC_later_than_5=y
CT_GCC_5_or_later=y
CT_GCC_REQUIRE_5_or_later=y
CT_GCC_later_than_4_9=y
CT_GCC_4_9_or_later=y
CT_GCC_REQUIRE_4_9_or_later=y
CT_GCC_later_than_4_8=y
CT_GCC_4_8_or_later=y
CT_CC_GCC_ENABLE_PLUGINS=y
CT_CC_GCC_GOLD=y
CT_CC_GCC_HAS_LIBMPX=y
CT_CC_GCC_ENABLE_CXX_FLAGS=""
CT_CC_GCC_CORE_EXTRA_CONFIG_ARRAY=""
CT_CC_GCC_EXTRA_CONFIG_ARRAY=""
# CT_CC_GCC_SYSTEM_ZLIB is not set
CT_CC_GCC_CONFIG_TLS=m

#
# Optimisation features
#
CT_CC_GCC_USE_GRAPHITE=y
CT_CC_GCC_USE_LTO=y

#
# Settings for libraries running on target
#
CT_CC_GCC_ENABLE_TARGET_OPTSPACE=y
# CT_CC_GCC_LIBMUDFLAP is not set
# CT_CC_GCC_LIBGOMP is not set
# CT_CC_GCC_LIBSSP is not set
# CT_CC_GCC_LIBQUADMATH is not set
# CT_CC_GCC_LIBSANITIZER is not set
CT_CC_GCC_LIBMPX=y

#
# Misc. obscure options.
#
CT_CC_CXA_ATEXIT=y
# CT_CC_GCC_DISABLE_PCH is not set
CT_CC_GCC_SJLJ_EXCEPTIONS=m
CT_CC_GCC_LDBL_128=m
# CT_CC_GCC_BUILD_ID is not set
# CT_CC_GCC_LNK_HASH_STYLE_DEFAULT is not set
# CT_CC_GCC_LNK_HASH_STYLE_SYSV is not set
# CT_CC_GCC_LNK_HASH_STYLE_GNU is not set
CT_CC_GCC_LNK_HASH_STYLE_BOTH=y
CT_CC_GCC_LNK_HASH_STYLE="both"
CT_CC_GCC_DEC_FLOAT_AUTO=y
# CT_CC_GCC_DEC_FLOAT_BID is not set
# CT_CC_GCC_DEC_FLOAT_DPD is not set
# CT_CC_GCC_DEC_FLOATS_NO is not set
CT_ALL_CC_CHOICES="GCC"

#
# Additional supported languages:
#
CT_CC_LANG_CXX=y
# CT_CC_LANG_FORTRAN is not set

#
# Debug facilities
#
# CT_DEBUG_DUMA is not set
CT_DEBUG_GDB=y
CT_DEBUG_GDB_PKG_KSYM="GDB"
CT_GDB_DIR_NAME="gdb"
CT_GDB_USE_GNU=y
CT_GDB_USE="GDB"
CT_GDB_PKG_NAME="gdb"
CT_GDB_SRC_RELEASE=y
CT_GDB_PATCH_ORDER="global"
CT_GDB_V_9_2=y
# CT_GDB_V_8_3 is not set
# CT_GDB_V_8_2 is not set
# CT_GDB_V_8_1 is not set
# CT_GDB_V_8_0 is not set
# CT_GDB_V_7_12 is not set
# CT_GDB_V_7_11 is not set
# CT_GDB_NO_VERSIONS is not set
CT_GDB_VERSION="9.2"
CT_GDB_MIRRORS="$(CT_Mirrors GNU gdb) $(CT_Mirrors sourceware gdb/releases)"
CT_GDB_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_GDB_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_GDB_ARCHIVE_FORMATS=".tar.xz .tar.gz"
CT_GDB_SIGNATURE_FORMAT=""
CT_GDB_later_than_8_3=y
CT_GDB_8_3_or_later=y
CT_GDB_later_than_8_0=y
CT_GDB_8_0_or_later=y
CT_GDB_later_than_7_12=y
CT_GDB_7_12_or_later=y
CT_GDB_later_than_7_2=y
CT_GDB_7_2_or_later=y
CT_GDB_later_than_7_0=y
CT_GDB_7_0_or_later=y
CT_GDB_CROSS=y
# CT_GDB_CROSS_SIM is not set
CT_GDB_CROSS_PYTHON=y
CT_GDB_CROSS_PYTHON_BINARY=""
CT_GDB_CROSS_EXTRA_CONFIG_ARRAY=""
# CT_GDB_NATIVE is not set
CT_GDB_GDBSERVER=y
# CT_GDB_NATIVE_BUILD_IPA_LIB is not set
# CT_GDB_NATIVE_STATIC_LIBSTDCXX is not set
CT_GDB_HAS_PKGVERSION_BUGURL=y
CT_GDB_HAS_PYTHON=y
CT_GDB_INSTALL_GDBINIT=y
CT_GDB_HAS_IPA_LIB=y
# CT_DEBUG_LTRACE is not set
# CT_DEBUG_STRACE is not set
CT_ALL_DEBUG_CHOICES="DUMA GDB LTRACE STRACE"

#
# Companion libraries
#
# CT_COMPLIBS_CHECK is not set
# CT_COMP_LIBS_CLOOG is not set
CT_COMP_LIBS_EXPAT=y
CT_COMP_LIBS_EXPAT_PKG_KSYM="EXPAT"
CT_EXPAT_DIR_NAME="expat"
CT_EXPAT_PKG_NAME="expat"
CT_EXPAT_SRC_RELEASE=y
CT_EXPAT_PATCH_ORDER="global"
CT_EXPAT_V_2_2=y
# CT_EXPAT_NO_VERSIONS is not set
CT_EXPAT_VERSION="2.2.9"
CT_EXPAT_MIRRORS="http://downloads.sourceforge.net/project/expat/expat/${CT_EXPAT_VERSION} https://github.com/libexpat/libexpat/releases/download/R_${CT_EXPAT_VERSION//./_}"
CT_EXPAT_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_EXPAT_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_EXPAT_ARCHIVE_FORMATS=".tar.xz .tar.lz .tar.bz2 .tar.gz"
CT_EXPAT_SIGNATURE_FORMAT=""
CT_COMP_LIBS_GETTEXT=y
CT_COMP_LIBS_GETTEXT_PKG_KSYM="GETTEXT"
CT_GETTEXT_DIR_NAME="gettext"
CT_GETTEXT_PKG_NAME="gettext"
CT_GETTEXT_SRC_RELEASE=y
CT_GETTEXT_PATCH_ORDER="global"
CT_GETTEXT_V_0_20_1=y
# CT_GETTEXT_V_0_19_8_1 is not set
# CT_GETTEXT_NO_VERSIONS is not set
CT_GETTEXT_VERSION="0.20.1"
CT_GETTEXT_MIRRORS="$(CT_Mirrors GNU gettext)"
CT_GETTEXT_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_GETTEXT_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_GETTEXT_ARCHIVE_FORMATS=".tar.xz .tar.gz"
CT_GETTEXT_SIGNATURE_FORMAT="packed/.sig"
CT_COMP_LIBS_GMP=y
CT_COMP_LIBS_GMP_PKG_KSYM="GMP"
CT_GMP_DIR_NAME="gmp"
CT_GMP_PKG_NAME="gmp"
CT_GMP_SRC_RELEASE=y
CT_GMP_PATCH_ORDER="global"
CT_GMP_V_6_2=y
# CT_GMP_V_6_1 is not set
# CT_GMP_NO_VERSIONS is not set
CT_GMP_VERSION="6.2.0"
CT_GMP_MIRRORS="https://gmplib.org/download/gmp https://gmplib.org/download/gmp/archive $(CT_Mirrors GNU gmp)"
CT_GMP_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_GMP_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_GMP_ARCHIVE_FORMATS=".tar.xz .tar.lz .tar.bz2"
CT_GMP_SIGNATURE_FORMAT="packed/.sig"
CT_GMP_later_than_5_1_0=y
CT_GMP_5_1_0_or_later=y
CT_GMP_later_than_5_0_0=y
CT_GMP_5_0_0_or_later=y
CT_GMP_REQUIRE_5_0_0_or_later=y
CT_COMP_LIBS_ISL=y
CT_COMP_LIBS_ISL_PKG_KSYM="ISL"
CT_ISL_DIR_NAME="isl"
CT_ISL_PKG_NAME="isl"
CT_ISL_SRC_RELEASE=y
CT_ISL_PATCH_ORDER="global"
CT_ISL_V_0_22=y
# CT_ISL_V_0_21 is not set
# CT_ISL_V_0_20 is not set
# CT_ISL_V_0_19 is not set
# CT_ISL_V_0_18 is not set
# CT_ISL_V_0_17 is not set
# CT_ISL_V_0_16 is not set
# CT_ISL_V_0_15 is not set
# CT_ISL_NO_VERSIONS is not set
CT_ISL_VERSION="0.22"
CT_ISL_MIRRORS="http://isl.gforge.inria.fr"
CT_ISL_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_ISL_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_ISL_ARCHIVE_FORMATS=".tar.xz .tar.bz2 .tar.gz"
CT_ISL_SIGNATURE_FORMAT=""
CT_ISL_later_than_0_18=y
CT_ISL_0_18_or_later=y
CT_ISL_later_than_0_15=y
CT_ISL_0_15_or_later=y
CT_ISL_REQUIRE_0_15_or_later=y
CT_ISL_later_than_0_14=y
CT_ISL_0_14_or_later=y
CT_ISL_REQUIRE_0_14_or_later=y
CT_ISL_later_than_0_13=y
CT_ISL_0_13_or_later=y
CT_ISL_later_than_0_12=y
CT_ISL_0_12_or_later=y
CT_ISL_REQUIRE_0_12_or_later=y
# CT_COMP_LIBS_LIBELF is not set
CT_COMP_LIBS_LIBICONV=y
CT_COMP_LIBS_LIBICONV_PKG_KSYM="LIBICONV"
CT_LIBICONV_DIR_NAME="libiconv"
CT_LIBICONV_PKG_NAME="libiconv"
CT_LIBICONV_SRC_RELEASE=y
CT_LIBICONV_PATCH_ORDER="global"
CT_LIBICONV_V_1_16=y
# CT_LIBICONV_V_1_15 is not set
# CT_LIBICONV_NO_VERSIONS is not set
CT_LIBICONV_VERSION="1.16"
CT_LIBICONV_MIRRORS="$(CT_Mirrors GNU libiconv)"
CT_LIBICONV_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_LIBICONV_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_LIBICONV_ARCHIVE_FORMATS=".tar.gz"
CT_LIBICONV_SIGNATURE_FORMAT="packed/.sig"
CT_COMP_LIBS_MPC=y
CT_COMP_LIBS_MPC_PKG_KSYM="MPC"
CT_MPC_DIR_NAME="mpc"
CT_MPC_PKG_NAME="mpc"
CT_MPC_SRC_RELEASE=y
CT_MPC_PATCH_ORDER="global"
CT_MPC_V_1_2=y
# CT_MPC_V_1_1 is not set
# CT_MPC_V_1_0 is not set
# CT_MPC_NO_VERSIONS is not set
CT_MPC_VERSION="1.2.0"
CT_MPC_MIRRORS="http://www.multiprecision.org/downloads $(CT_Mirrors GNU mpc)"
CT_MPC_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_MPC_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_MPC_ARCHIVE_FORMATS=".tar.gz"
CT_MPC_SIGNATURE_FORMAT="packed/.sig"
CT_MPC_later_than_1_1_0=y
CT_MPC_1_1_0_or_later=y
CT_COMP_LIBS_MPFR=y
CT_COMP_LIBS_MPFR_PKG_KSYM="MPFR"
CT_MPFR_DIR_NAME="mpfr"
CT_MPFR_PKG_NAME="mpfr"
CT_MPFR_SRC_RELEASE=y
CT_MPFR_PATCH_ORDER="global"
CT_MPFR_V_4_1=y
# CT_MPFR_V_4_0 is not set
# CT_MPFR_V_3_1 is not set
# CT_MPFR_NO_VERSIONS is not set
CT_MPFR_VERSION="4.1.0"
CT_MPFR_MIRRORS="http://www.mpfr.org/mpfr-${CT_MPFR_VERSION} $(CT_Mirrors GNU mpfr)"
CT_MPFR_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_MPFR_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_MPFR_ARCHIVE_FORMATS=".tar.xz .tar.bz2 .tar.gz .zip"
CT_MPFR_SIGNATURE_FORMAT="packed/.asc"
CT_MPFR_later_than_4_0_0=y
CT_MPFR_4_0_0_or_later=y
CT_MPFR_later_than_3_0_0=y
CT_MPFR_3_0_0_or_later=y
CT_MPFR_REQUIRE_3_0_0_or_later=y
CT_COMP_LIBS_NCURSES=y
CT_COMP_LIBS_NCURSES_PKG_KSYM="NCURSES"
CT_NCURSES_DIR_NAME="ncurses"
CT_NCURSES_PKG_NAME="ncurses"
CT_NCURSES_SRC_RELEASE=y
CT_NCURSES_PATCH_ORDER="global"
CT_NCURSES_V_6_2=y
# CT_NCURSES_V_6_1 is not set
# CT_NCURSES_V_6_0 is not set
# CT_NCURSES_NO_VERSIONS is not set
CT_NCURSES_VERSION="6.2"
CT_NCURSES_MIRRORS="ftp://invisible-island.net/ncurses $(CT_Mirrors GNU ncurses)"
CT_NCURSES_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_NCURSES_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_NCURSES_ARCHIVE_FORMATS=".tar.gz"
CT_NCURSES_SIGNATURE_FORMAT="packed/.sig"
CT_NCURSES_HOST_CONFIG_ARGS=""
CT_NCURSES_HOST_DISABLE_DB=y
CT_NCURSES_HOST_FALLBACKS="linux,xterm,xterm-color,xterm-256color,vt100"
CT_NCURSES_TARGET_CONFIG_ARGS=""
# CT_NCURSES_TARGET_DISABLE_DB is not set
CT_NCURSES_TARGET_FALLBACKS=""
CT_COMP_LIBS_ZLIB=y
CT_COMP_LIBS_ZLIB_PKG_KSYM="ZLIB"
CT_ZLIB_DIR_NAME="zlib"
CT_ZLIB_PKG_NAME="zlib"
CT_ZLIB_SRC_RELEASE=y
CT_ZLIB_PATCH_ORDER="global"
CT_ZLIB_V_1_2_11=y
# CT_ZLIB_NO_VERSIONS is not set
CT_ZLIB_VERSION="1.2.11"
CT_ZLIB_MIRRORS="http://downloads.sourceforge.net/project/libpng/zlib/${CT_ZLIB_VERSION} https://www.zlib.net/"
CT_ZLIB_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_ZLIB_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_ZLIB_ARCHIVE_FORMATS=".tar.xz .tar.gz"
CT_ZLIB_SIGNATURE_FORMAT="packed/.asc"
CT_ALL_COMP_LIBS_CHOICES="CLOOG EXPAT GETTEXT GMP ISL LIBELF LIBICONV MPC MPFR NCURSES ZLIB"
CT_LIBICONV_NEEDED=y
CT_GETTEXT_NEEDED=y
CT_GMP_NEEDED=y
CT_MPFR_NEEDED=y
CT_ISL_NEEDED=y
CT_MPC_NEEDED=y
CT_EXPAT_NEEDED=y
CT_NCURSES_NEEDED=y
CT_ZLIB_NEEDED=y
CT_LIBICONV=y
CT_GETTEXT=y
CT_GMP=y
CT_MPFR=y
CT_ISL=y
CT_MPC=y
CT_EXPAT=y
CT_NCURSES=y
CT_ZLIB=y

#
# Companion tools
#
# CT_COMP_TOOLS_FOR_HOST is not set
# CT_COMP_TOOLS_AUTOCONF is not set
# CT_COMP_TOOLS_AUTOMAKE is not set
CT_COMP_TOOLS_BISON=y
CT_COMP_TOOLS_BISON_PKG_KSYM="BISON"
CT_BISON_DIR_NAME="bison"
CT_BISON_PKG_NAME="bison"
CT_BISON_SRC_RELEASE=y
CT_BISON_PATCH_ORDER="global"
CT_BISON_V_3_5=y
# CT_BISON_V_3_4 is not set
# CT_BISON_V_3_3 is not set
# CT_BISON_V_3_2 is not set
# CT_BISON_V_3_1 is not set
# CT_BISON_V_3_0 is not set
# CT_BISON_NO_VERSIONS is not set
CT_BISON_VERSION="3.5"
CT_BISON_MIRRORS="$(CT_Mirrors GNU bison)"
CT_BISON_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_BISON_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_BISON_ARCHIVE_FORMATS=".tar.xz .tar.gz"
CT_BISON_SIGNATURE_FORMAT="packed/.sig"
# CT_COMP_TOOLS_DTC is not set
# CT_COMP_TOOLS_LIBTOOL is not set
CT_COMP_TOOLS_M4=y
CT_COMP_TOOLS_M4_PKG_KSYM="M4"
CT_M4_DIR_NAME="m4"
CT_M4_PKG_NAME="m4"
CT_M4_SRC_RELEASE=y
CT_M4_PATCH_ORDER="global"
CT_M4_V_1_4=y
# CT_M4_NO_VERSIONS is not set
CT_M4_VERSION="1.4.18"
CT_M4_MIRRORS="$(CT_Mirrors GNU m4)"
CT_M4_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_M4_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_M4_ARCHIVE_FORMATS=".tar.xz .tar.bz2 .tar.gz"
CT_M4_SIGNATURE_FORMAT="packed/.sig"
CT_COMP_TOOLS_MAKE=y
CT_COMP_TOOLS_MAKE_PKG_KSYM="MAKE"
CT_MAKE_DIR_NAME="make"
CT_MAKE_PKG_NAME="make"
CT_MAKE_SRC_RELEASE=y
CT_MAKE_PATCH_ORDER="global"
CT_MAKE_V_4_3=y
# CT_MAKE_V_4_2 is not set
# CT_MAKE_NO_VERSIONS is not set
CT_MAKE_VERSION="4.3"
CT_MAKE_MIRRORS="$(CT_Mirrors GNU make)"
CT_MAKE_ARCHIVE_FILENAME="@{pkg_name}-@{version}"
CT_MAKE_ARCHIVE_DIRNAME="@{pkg_name}-@{version}"
CT_MAKE_ARCHIVE_FORMATS=".tar.lz .tar.gz"
CT_MAKE_SIGNATURE_FORMAT="packed/.sig"
CT_MAKE_later_than_4_0=y
CT_MAKE_4_0_or_later=y
CT_MAKE_REQUIRE_4_0_or_later=y
# CT_MAKE_GMAKE_SYMLINK is not set
CT_MAKE_GNUMAKE_SYMLINK=y
CT_ALL_COMP_TOOLS_CHOICES="AUTOCONF AUTOMAKE BISON DTC LIBTOOL M4 MAKE"

02_aarch64_toolchain.cmake

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)

# Toolchain generated via crosstool-ng as described above for aarch64
set(CMAKE_SYSROOT /Users/karsten/workspace/toolchains/aarch64/aarch64-unknown-linux-gnu/aarch64-unknown-linux-gnu/sysroot)

set(tools ${CMAKE_SYSROOT}/../..)
set(CMAKE_C_COMPILER ${tools}/bin/aarch64-unknown-linux-gnu-cc)
set(CMAKE_CXX_COMPILER ${tools}/bin/aarch64-unknown-linux-gnu-c++)

# Where are calls to `find_package` looking for?
set(CMAKE_FIND_ROOT_PATH ${CMAKE_INSTALL_PREFIX};${CMAKE_SYSROOT})
set(CMAKE_SKIP_RPATH TRUE CACHE BOOL "If set, runtime paths are not added when using shared libraries.")
set(THREADS_PTHREAD_ARG "0" CACHE STRING "Result from TRY_RUN" FORCE)

# Use a relative path lookup for libraries, needed by things like spdlog etc
# where top-level libraries are softlinked to their precise versions.
set(CMAKE_C_FLAGS_INIT "-Wl,-rpath-link,${CMAKE_SYSROOT}/usr/lib:${CMAKE_INSTALL_PREFIX}/lib")
set(CMAKE_CXX_FLAGS "-Wl,-rpath-link,${CMAKE_SYSROOT}/usr/lib:${CMAKE_INSTALL_PREFIX}/lib")

# Which python is used at the host?
set(PYTHON_SOABI cpython-38m-aarch64-unknown-linux-gnu)

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

03_nvidia_drivers_rt_preempt

Follow guide here:
https://www.programmersought.com/article/47743808166/

On non-rt kernel, install nvidia-driver as usual
On rt kernel, use apollo-kernel script to patch nvidia installer