[2024-feb-29] Sad news: Eric Layton aka Nocturnal Slacker aka vtel57 passed away on Feb 26th, shortly after hospitalization. He was one of our Wiki's most prominent admins. He will be missed.

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howtos:hardware:arm:gcc-13.x_aarch64_cross-compiler [2023/10/15 15:57 (UTC)] – [Slackware ARM current ARMv8 AArch64 cross-compiler build script (gcc-13.2.0) for the Raspberry Pi 3/4] exagahowtos:hardware:arm:gcc-13.x_aarch64_cross-compiler [2024/02/08 08:04 (UTC)] (current) – [AArch64 cross-compiler script code] changed -j4 to -j$(nproc) exaga
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-====== Slackware ARM current ARMv8 AArch64 cross-compiler build script (gcc-13.2.0) for the Raspberry Pi 3/4/5 ======+====== Slackware ARM 15.0 ARMv8 AArch64 cross-compiler build script (gcc-13.2.0) for the Raspberry Pi 3/4/5 ======
  
 ===== Preface ===== ===== Preface =====
  
-With the updates of [[http://arm.slackware.com|Slackware AArch64]] to gcc-13.2.0, this is an ARMv8 AArch64 cross-compiler bash script that's intended for building binaries from source code and turning them into Slackware packages on 32-bit slackware systems. Or whatever other purpose(s) you may find for this script and its possibilities.+With the updates of [[http://arm.slackware.com|Slackware AArch64]] to gcc-13.2.0, this is an ARMv8 AArch64 cross-compiler bash script that's intended for building binaries from source code and turning them into Slackware packages on 32-bit Slackware systems. Or whatever other purpose(s) you may find for this script and its possibilities.
  
-Previous [[https://docs.slackware.com/howtos:hardware:arm:gcc-12.x_aarch64_cross-compiler|work in this area]] has been done over the years but the build script and intructions are mostly the same. Some of the code in the script has changed from the previous version(s), with updated binutils and glibc versions, and especially the libsanitizer/asan source code patching. +Previous [[https://docs.slackware.com/howtos:hardware:arm:gcc-12.x_aarch64_cross-compiler|work in this area]] has been done over the years but the build script and instructions are mostly the same. Some of the code in the script has changed from the previous version(s), with notable and updated binutils and glibc versions, and especially the libsanitizer/asan patch code. 
  
 ===== Notes ===== ===== Notes =====
  
-Slackware ARM 15.0 was used on a Raspberry Pi 2 [2GB RAM] to build and install the gcc-13.2.0 aarch64-linux cross-compiler. +Slackware ARM 15.0 was used on a Raspberry Pi 3 [1GB RAM] to build and install the gcc-13.2.0 aarch64-linux cross-compiler. 
  
 The Linux kernel source downloaded is from the Raspberry Pi Github repository: [[https://github.com/raspberrypi/linux]] The Linux kernel source downloaded is from the Raspberry Pi Github repository: [[https://github.com/raspberrypi/linux]]
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 As a pre-requisite, you should have;  As a pre-requisite, you should have; 
-  * a Raspberry Pi 3, 4, 5, (i.e. a 64-bit CPU) running Slackware ARM current with as much unused [>= 5GB] storage space on your system as possible. \\  +  * a Raspberry Pi 3, 4, 5, (i.e. a 64-bit CPU) running Slackware ARM 15.0 with as much unused [>= 5GB] storage space on your system as possible. \\  
-  * [[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-current/slackware/a/|gawk]],   [[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-current/slackware/d/|git]], [[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-current/slackware/d/|bison]] and [[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-current/slackware/d/|flex]], already installed on your system. \\  +  * [[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-15.0/slackware/a/|gawk]],   [[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-15.0/slackware/d/|git]], [[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-15.0/slackware/d/|bison]] and [[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-15.0/slackware/d/|flex]], already installed on your system. \\  
  
  
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 ############################################################################## ##############################################################################
-# Slackware ARM gcc-13.2.0 aarch64 cross-compiler for Raspberry Pi 
 # #
-# SARPi64.SlackBuild-gcc-13.2.0-aarch64-cc [v1.6] - 2022-09-17+# Slackware ARM gcc-13.2.0 AArch64 cross-compiler for Raspberry Pi 
 +# 
 +# SARPi64.SlackBuild-gcc-13.2.0-aarch64-cc [v1.6] - 2023-10-14
 # #
 # 2023-10-14 by Exaga   -   v1.6   -  gcc-13.2.x # 2023-10-14 by Exaga   -   v1.6   -  gcc-13.2.x
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 # This script downloads RPi Linux kernel source and the required binaries,  # This script downloads RPi Linux kernel source and the required binaries, 
 # and configures, builds, patches, and installs a gcc 13.2.x aarch64-linux  # and configures, builds, patches, and installs a gcc 13.2.x aarch64-linux 
-# cross-compiler on Slackware ARM current running on a Raspberry Pi 3/4.+# cross-compiler on Slackware ARM running on a Raspberry Pi 3/4/5.
 # #
 ### Installation & Usage ### ### Installation & Usage ###
 +#
 # You should create a 'build-dir' folder and copy this script to it  # You should create a 'build-dir' folder and copy this script to it 
 # (e.g. /tmp/build-dir) and run it from there as a 'root' user.  # (e.g. /tmp/build-dir) and run it from there as a 'root' user. 
 # #
-# ~# chmod +x SARPi64.SlackBuild-gcc-13.2.0-aarch64-cc.sh 
 # ~# ./SARPi64.SlackBuild-gcc-13.2.0-aarch64-cc.sh # ~# ./SARPi64.SlackBuild-gcc-13.2.0-aarch64-cc.sh
 # #
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 # #
 # If you need to install any of the packages above [* check for updates!]: # If you need to install any of the packages above [* check for updates!]:
-# http://slackware.uk/slackwarearm/slackwarearm-current/slackware/a/gawk*.txz   +# http://slackware.uk/slackwarearm/slackwarearm-15.0/slackware/a/gawk*.txz   
-# http://slackware.uk/slackwarearm/slackwarearm-current/slackware/d/git*.txz  +# http://slackware.uk/slackwarearm/slackwarearm-15.0/slackware/d/git*.txz  
-# http://slackware.uk/slackwarearm/slackwarearm-current/slackware/d/bison*.txz  +# http://slackware.uk/slackwarearm/slackwarearm-15.0/slackware/d/bison*.txz  
-# http://slackware.uk/slackwarearm/slackwarearm-current/slackware/d/flex*.txz+# http://slackware.uk/slackwarearm/slackwarearm-15.0/slackware/d/flex*.txz
 # #
 # NB: The gcc package you compile should match your currently installed gcc  # NB: The gcc package you compile should match your currently installed gcc 
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 # #
 # ~# gcc --version # ~# gcc --version
 +#
 +# Copy the Linux kernel-headers package to /tmp/usr and delete asm directory.
 +# Then symlink it to asm-armv8 directory:
 +#
 +# root@jook:/tmp/usr/include# rm -rf asm
 +# root@jook:/tmp/usr/include# ln -sf asm-armv8 asm
 # #
 # More recent gcc packages-versions may exist. You may wish to install them.  # More recent gcc packages-versions may exist. You may wish to install them. 
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 # #
 # binutils - https://ftp.gnu.org/gnu/binutils/ # binutils - https://ftp.gnu.org/gnu/binutils/
-# cloog -https://gcc.gnu.org/pub/gcc/infrastructure/+# cloog - ftp://gcc.gnu.org/pub/gcc/infrastructure/
 # gcc - https://ftp.gnu.org/gnu/gcc/ # gcc - https://ftp.gnu.org/gnu/gcc/
 # glibc - https://ftp.gnu.org/gnu/glibc/ # glibc - https://ftp.gnu.org/gnu/glibc/
 # gmp - https://ftp.gnu.org/gnu/gmp/ # gmp - https://ftp.gnu.org/gnu/gmp/
-# isl - https://gcc.gnu.org/pub/gcc/infrastructure/+# isl - ftp://gcc.gnu.org/pub/gcc/infrastructure/
 # mpfr - https://ftp.gnu.org/gnu/mpfr/ # mpfr - https://ftp.gnu.org/gnu/mpfr/
 # mpc - https://ftp.gnu.org/gnu/mpc/ # mpc - https://ftp.gnu.org/gnu/mpc/
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 # #
 ### Disclaimer ### ### Disclaimer ###
 +#
 # This script was created on Slackware ARM and intended for development  # This script was created on Slackware ARM and intended for development 
 # and testing on Slackware AArch64. This script may work on other Linux  # and testing on Slackware AArch64. This script may work on other Linux 
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 # Slackware AArch64.  # Slackware AArch64. 
 # #
-# Copyright 2016-2022 Exaga, sarpi.penthux.net +#   Copyright (c) 2016-2024 Exaga - sarpi.penthux.net
-# All rights reserved.+
 # #
 #   Permission to use, copy, modify, and distribute this software for #   Permission to use, copy, modify, and distribute this software for
 #   any purpose with or without fee is hereby granted, provided that #   any purpose with or without fee is hereby granted, provided that
-#   the above copyright notice and this permission notice appear in all +#   the above copyright notice and this disclaimer notice appear in  
-#   copies.+#   all copies. All rights reserved.
 # #
 #   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED #   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 ############################################################################## ##############################################################################
  
- 
-############################################################################# 
-##                         SETTINGS AND VERSIONS                           ## 
-############################################################################# 
  
 # Installation directory - edit INSTALL_PATH as required # Installation directory - edit INSTALL_PATH as required
 INSTALL_PATH=/tmp/.gcc-cross INSTALL_PATH=/tmp/.gcc-cross
  
-# Required build packages versions [* newer versions may exist]+# Required build packages-versions [* newer versions may exist]
 BINUTILS_VERSION=binutils-2.41 BINUTILS_VERSION=binutils-2.41
 CLOOG_VERSION=cloog-0.18.1 CLOOG_VERSION=cloog-0.18.1
 GCC_VERSION=gcc-13.2.0 GCC_VERSION=gcc-13.2.0
 GLIBC_VERSION=glibc-2.38 GLIBC_VERSION=glibc-2.38
-GMP_VERSION=gmp-6.3.0+GMP_VERSION=gmp-6.2.1
 ISL_VERSION=isl-0.24 ISL_VERSION=isl-0.24
-MPFR_VERSION=mpfr-4.2.1 +MPFR_VERSION=mpfr-4.1.0 
-MPC_VERSION=mpc-1.3.1+MPC_VERSION=mpc-1.2.1
  
 # RPi GitHub Linux source - working branch [e.g. rpi-5.15.y | rpi-5.19.y | rpi-6.1.y  ]  # RPi GitHub Linux source - working branch [e.g. rpi-5.15.y | rpi-5.19.y | rpi-6.1.y  ] 
-DEV_BRANCH=rpi-6.1.y+DEV_BRANCH=rpi-6.6.y
  
  
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 # Build variables # Build variables
 PRGNAM=SARPi64.SlackBuild-aarch64-cc PRGNAM=SARPi64.SlackBuild-aarch64-cc
-ARCH_TARGET=aarch64-linux  +ARCH_TARGET=aarch64-linux
 LINUX_ARCH=arm64 LINUX_ARCH=arm64
 QUADLET=aarch64-unknown-linux-gnu # aarch64-arm-none-eabi QUADLET=aarch64-unknown-linux-gnu # aarch64-arm-none-eabi
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 RPI_GITURL_LINUX=https://github.com/raspberrypi RPI_GITURL_LINUX=https://github.com/raspberrypi
 BUILD_LANGUAGES="--enable-languages=c,c++" # --enable-languages=all,ada,c,c++,fortran,go,jit,lto,objc,obj-c++ BUILD_LANGUAGES="--enable-languages=c,c++" # --enable-languages=all,ada,c,c++,fortran,go,jit,lto,objc,obj-c++
-ALT_CONFIG_OPTIONS="--disable-multilib" # --disable-threads --disable-shared --disable-multiarch+ALT_CONFIG_OPTIONS="--disable-multilib" 
 +BLD_CONFIG_OPTIONS="--disable-multilib --disable-threads --disable-shared --disable-multiarch -mcpu=cortex-a53+crc -mtune=cortex-a53 --disable-fixincludes --with-system-zlib"  
 TEST_CONFIG_OPTIONS="--with-arch=armv8-a --with-tune=cortex-a72 --with-fpu=vfpv3-d16 --with-float=hard" #  TEST_CONFIG_OPTIONS="--with-arch=armv8-a --with-tune=cortex-a72 --with-fpu=vfpv3-d16 --with-float=hard" # 
-RPI4_CONFIG_OPTIONS="--prefix=$INSTALL_PATH --target=arm-linux-gnueabihf --enable-languages=c,c++ --with-arch=armv8-a --with-fpu=vfp --with-float=hard --disable-multilib" #  +RPI_CONFIG_OPTIONS="--prefix=$INSTALL_PATH --target=arm-linux-gnueabihf --enable-languages=c,c++ --with-arch=armv8-a --with-fpu=vfp --with-float=hard --disable-multilib" #  
-PARALLEL_JOBS=-j4 # https://www.gnu.org/software/make/manual/html_node/Parallel.html+# https://www.gnu.org/software/make/manual/html_node/Parallel.html 
 +PARALLEL_JOBS="-j$(nproc)" 
 CWD=$(pwd) CWD=$(pwd)
  
 # Define CONFIG_OPTIONS for build # Define CONFIG_OPTIONS for build
 CONFIG_OPTIONS=$ALT_CONFIG_OPTIONS CONFIG_OPTIONS=$ALT_CONFIG_OPTIONS
 +
 +# Set bulletin
 +set -e
 +
 +# INSTALL_PATH needs to be at the front of $PATH
 +# Command: export PATH=/tmp/.gcc-cross/bin:$PATH
 +echo "Checking $ARCH_TARGET $INSTALL_PATH/bin \$PATH ..."
 +if [[ ! "$PATH" =~ $INSTALL_PATH ]]; then
 +    export PATH=/"${INSTALL_PATH}"/bin:$PATH 
 +else
 +    echo "Found $INSTALL_PATH\/bin in \$PATH : OK! ... "
 +fi
  
 # Uncomment to log EVERYTHING during build process [** WARNING! HUGE log filesize! **] # Uncomment to log EVERYTHING during build process [** WARNING! HUGE log filesize! **]
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 sarpiSP64 sarpiSP64
 echo "Starting $PRGNAM build ..." echo "Starting $PRGNAM build ..."
- 
-# INSTALL_PATH needs to be at the front of $PATH 
-# Command: export PATH=/tmp/.gcc-cross/bin:$PATH 
-echo "Checking $ARCH_TARGET $INSTALL_PATH/bin \$PATH ..." 
-if [[ ! "$PATH" =~ $INSTALL_PATH ]]; then 
-    export PATH=/"${INSTALL_PATH}"/bin:$PATH  
-# echo -e $INSTALL_PATH/bin:$(cat $PATH) > $PATH || exit 1 
-else 
-    echo "Found $INSTALL_PATH\/bin in \$PATH : OK! ... " 
-fi 
  
 # Prerequisite packages # Prerequisite packages
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   echo "ERROR: bison not found!"   echo "ERROR: bison not found!"
   echo "Install bison before you run this script!"   echo "Install bison before you run this script!"
-  exit 1+  exit 1;
 elif [ ! -e "$FLEX_REQ" ]; then elif [ ! -e "$FLEX_REQ" ]; then
   echo "ERROR: flex not found!"   echo "ERROR: flex not found!"
   echo "Install flex before you run this script!"   echo "Install flex before you run this script!"
-  exit 1+  exit 1;
 elif [ ! -e "$GAWK_REQ" ]; then elif [ ! -e "$GAWK_REQ" ]; then
   echo "ERROR: gawk not found!"   echo "ERROR: gawk not found!"
   echo "Install gawk before you run this script!"   echo "Install gawk before you run this script!"
-  exit 1+  exit 1;
 elif [ ! -e "$GIT_REQ" ]; then elif [ ! -e "$GIT_REQ" ]; then
   echo "ERROR: git not found!"   echo "ERROR: git not found!"
   echo "Install git before you run this script!"   echo "Install git before you run this script!"
-  exit 1+  exit 1;
 else else
   echo "Prerequisite packages are installed ..."    echo "Prerequisite packages are installed ..."
 fi fi
 +
 +# Delete build-binutils directory [if it exists]
 +rm -rf build-binutils
 +mkdir build-binutils
  
 # Download RPi kernel source ** this may take a while ** # Download RPi kernel source ** this may take a while **
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 if [ ! -e $LINUX_FLAVOUR/Makefile ]; then if [ ! -e $LINUX_FLAVOUR/Makefile ]; then
   echo "Downloading kernel $DEV_BRANCH source ..."   echo "Downloading kernel $DEV_BRANCH source ..."
-  git clone --depth=1 $RPI_GITURL_LINUX/linux.git --branch $DEV_BRANCH $LINUX_FLAVOUR+  git clone --branch $DEV_BRANCH --depth=1 $RPI_GITURL_LINUX/linux.git $LINUX_FLAVOUR
 fi fi
 cd $LINUX_FLAVOUR cd $LINUX_FLAVOUR
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 fi fi
  
-# Create symbolic links so gcc builds these dependencies automatically+# Create symbolic links so gcc builds these dependencies. This can be done  
 +# automagically by using the following command in gcc source dir:  
 +# ./contrib/download_prerequisites 
 +#
 echo "Creating symbolic links in gcc ..." echo "Creating symbolic links in gcc ..."
 cd "$CWD"/$GCC_VERSION cd "$CWD"/$GCC_VERSION
 +ln -sf ../$GMP_VERSION gmp
 ln -sf ../$MPFR_VERSION mpfr ln -sf ../$MPFR_VERSION mpfr
-ln -sf ../$GMP_VERSION gmp 
 ln -sf ../$MPC_VERSION mpc ln -sf ../$MPC_VERSION mpc
 ln -sf ../$ISL_VERSION isl ln -sf ../$ISL_VERSION isl
 ln -sf ../$CLOOG_VERSION cloog ln -sf ../$CLOOG_VERSION cloog
  
-# Create aarch64 cross-compiler install directory+# Create AArch64 cross-compiler install directory
 echo "Creating $INSTALL_PATH directory ..." echo "Creating $INSTALL_PATH directory ..."
 rm -rf $INSTALL_PATH rm -rf $INSTALL_PATH
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 # Build binutils # Build binutils
 echo "Building binutils ..." echo "Building binutils ..."
-rm -rf build-binutils 
-mkdir build-binutils 
 cd build-binutils cd build-binutils
 ../$BINUTILS_VERSION/configure --prefix=$INSTALL_PATH --target=$ARCH_TARGET $CONFIG_OPTIONS ../$BINUTILS_VERSION/configure --prefix=$INSTALL_PATH --target=$ARCH_TARGET $CONFIG_OPTIONS
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 mkdir -p build-gcc mkdir -p build-gcc
 cd build-gcc cd build-gcc
-../$GCC_VERSION/configure --prefix=$INSTALL_PATH --target=$ARCH_TARGET $BUILD_LANGUAGES $CONFIG_OPTIONS+../$GCC_VERSION/configure --prefix=$INSTALL_PATH --target=$ARCH_TARGET $BUILD_LANGUAGES $CONFIG_OPTIONS --disable-libsanitizer
 make $PARALLEL_JOBS all-gcc make $PARALLEL_JOBS all-gcc
 echo "Installing gcc $ARCH_TARGET cross-compiler to $INSTALL_PATH ..." echo "Installing gcc $ARCH_TARGET cross-compiler to $INSTALL_PATH ..."
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 touch asan_linux-cpp.patch touch asan_linux-cpp.patch
 cat << EOF > asan_linux-cpp.patch cat << EOF > asan_linux-cpp.patch
---- gcc-13.2.0/libsanitizer/asan/asan_linux.cpp 2023-07-27 09:13:08.000000000 +0100 +--- gcc-13.2.0/libsanitizer/asan/asan_linux.cpp 2023-10-15 19:29:43.000000000 +0100 
-+++ asan_linux-cpp.new 2023-10-15 14:36:04.000000000 +0100++++ asan_linux-cpp.new 2023-10-16 08:33:44.000000000 +0100
 @@ -77,6 +77,10 @@ @@ -77,6 +77,10 @@
  asan_rt_version_t  __asan_rt_version;  asan_rt_version_t  __asan_rt_version;
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 EOF EOF
  
-# Patch gcc-13.2.x/libsanitizerasan/asan_linux.cpp [or the build will fail]+# Patch gcc-13.2.x/libsanitizerasan/asan_linux.cpp [for posterity]
 ASANLINUXCC=$CWD/$GCC_VERSION/libsanitizer/asan/asan_linux.cpp ASANLINUXCC=$CWD/$GCC_VERSION/libsanitizer/asan/asan_linux.cpp
 if [ ! -f "$ASANLINUXCC".orig ]; then if [ ! -f "$ASANLINUXCC".orig ]; then
   echo "Patching $ASANLINUXCC ..."   echo "Patching $ASANLINUXCC ..."
-  patch -b "$ASANLINUXCC" asan_linux-cpp.patch || exit 1+  patch -b "$ASANLINUXCC" asan_linux-cpp.patch || exit 1;
   sarpiSP64   sarpiSP64
   echo "$ASANLINUXCC has been PATCHED! ..."   echo "$ASANLINUXCC has been PATCHED! ..."
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 mkdir -p build-glibc mkdir -p build-glibc
 cd build-glibc cd build-glibc
-../$GLIBC_VERSION/configure --prefix=$INSTALL_PATH/$ARCH_TARGET --build="$MACHTYPE" --host=$ARCH_TARGET --target=$ARCH_TARGET --with-headers=$INSTALL_PATH/$ARCH_TARGET/include $CONFIG_OPTIONS libc_cv_forced_unwind=yes+../$GLIBC_VERSION/configure --prefix=$INSTALL_PATH/$ARCH_TARGET --build="$MACHTYPE" --host=$ARCH_TARGET --target=$ARCH_TARGET $CONFIG_OPTIONS libc_cv_forced_unwind=yes
 make $PARALLEL_JOBS install-bootstrap-headers=yes install-headers make $PARALLEL_JOBS install-bootstrap-headers=yes install-headers
 make $PARALLEL_JOBS csu/subdir_lib make $PARALLEL_JOBS csu/subdir_lib
Line 401: Line 413:
 echo "Completing glibc C library ..." echo "Completing glibc C library ..."
 cd "$CWD"/build-glibc cd "$CWD"/build-glibc
-make $PARALLEL_JOBS+make $PARALLEL_JOBS 
 echo "Installing glibc C library ..." echo "Installing glibc C library ..."
 make install make install
Line 408: Line 420:
 echo "Completing glibc C++ library ..." echo "Completing glibc C++ library ..."
 cd "$CWD"/build-gcc cd "$CWD"/build-gcc
-make $PARALLEL_JOBS+make $PARALLEL_JOBS 
 echo "Installing glibc C++ library ..." echo "Installing glibc C++ library ..."
 make install make install
 cd "$CWD" cd "$CWD"
  
-# Check status of aarch64-linux-gcc cross-compiler+# Check status of AArch64-linux-gcc cross-compiler
 echo "Checking status of $ARCH_TARGET-gcc cross-compiler ..." echo "Checking status of $ARCH_TARGET-gcc cross-compiler ..."
 ARCH_TARGET_STATUS=$(which $ARCH_TARGET-gcc) ARCH_TARGET_STATUS=$(which $ARCH_TARGET-gcc)
Line 422: Line 434:
   sarpiSP64   sarpiSP64
   echo "$(date +"%F %T") : $PRGNAM FAILED! ..."   echo "$(date +"%F %T") : $PRGNAM FAILED! ..."
-  exit 1+  exit 1;
 else  else 
   # Done!   # Done!
Line 432: Line 444:
 fi fi
  
-# Done +#  
-exit 0+exit 0;
  
 #EOF<*> #EOF<*>
Line 466: Line 478:
 As an example to show how this can be achieved, the bespoke RPi kernel source 'master' branch will be used. This kernel source will be downloaded and located in '/tmp/linux-rpi' directory. [**NB: note that this is __NOT__ '/usr/src/linux' - it should never reside in that standard location for cross-compiling purposes!**]. After downloading the Linux source, use 'cd' to the directory where it's located: As an example to show how this can be achieved, the bespoke RPi kernel source 'master' branch will be used. This kernel source will be downloaded and located in '/tmp/linux-rpi' directory. [**NB: note that this is __NOT__ '/usr/src/linux' - it should never reside in that standard location for cross-compiling purposes!**]. After downloading the Linux source, use 'cd' to the directory where it's located:
  
-<code>root@slackware:~# git clone --depth=1 --branch=rpi-5.19.y git://github.com/raspberrypi/linux /tmp/linux-rpi+<code>root@slackware:~# git clone --depth=1 --branch=rpi-6.1.y git://github.com/raspberrypi/linux /tmp/linux-rpi
 Cloning into '/tmp/linux-rpi'... Cloning into '/tmp/linux-rpi'...
 ~ Enumerating, Counting, Compressing, yadda yadda yadda ~ ~ Enumerating, Counting, Compressing, yadda yadda yadda ~
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 root@slackware:/tmp/linux-rpi# </code> root@slackware:/tmp/linux-rpi# </code>
  
-We use '--branch=rpi-5.19.y' option to download the Linux kernel 5.19.x source specifically. We also use '--depth=1' option to only download the latest commit and not the entire branch content, which may currently be +10GB in size. The actual disk space amount used for the source that's just been downloaded is:+We use '--branch=rpi-6.1.y' option to download the Linux kernel 6.1.x source specifically. We also use '--depth=1' option to only download the latest commit and not the entire branch content, which may currently be +10GB in size. The actual disk space amount used for the source that's just been downloaded is:
  
 <code>root@slackware:/tmp/linux-rpi# du -sh /tmp/linux-rpi/ <code>root@slackware:/tmp/linux-rpi# du -sh /tmp/linux-rpi/
Line 488: Line 500:
 root@slackware:/tmp/linux-rpi# </code> root@slackware:/tmp/linux-rpi# </code>
  
-At the time of writing, this is kernel 5.19.9 source from the Raspberry Pi Github repository 'master' branch. You can download and work with other branches by simply maniplulating the 'git' command options. Right now the downloaded kernel source is in a "raw state" (i.e. it includes no settings or configurations) and it's not going to build anything until some form of instructions exist regarding specifically how/what/which to compile. +At the time of writing, this is kernel 6.1.19 source from the Raspberry Pi Github repository 'master' branch. You can download and work with other branches by simply maniplulating the 'git' command options. Right now the downloaded kernel source is in a "raw state" (i.e. it includes no settings or configurations) and it's not going to build anything until some form of instructions exist regarding specifically how/what/which to compile. 
  
 What's missing now is a kernel '.config' - a file that includes instructions (i.e. settings) that's an essential prerequisite in order to compile the Linux source into a resulting kernel image file - and you won't be doing much without creating one first. This is __much__ easier said than done if you're starting from scratch, because it requires intimate knowledge about the the computer/device hardware that you're building the kernel to support. However, with the Raspberry Pis (and many other ARM devices) there is such a thing as a 'default config', or 'defconfig', that can be called to build the kernel '.config' file for you and save a lot of time and effort (and unfortunately a huge amount of education and experience is also wasted in this process). So in the interest of saving time, let's do it the easy and lazy way for this example... What's missing now is a kernel '.config' - a file that includes instructions (i.e. settings) that's an essential prerequisite in order to compile the Linux source into a resulting kernel image file - and you won't be doing much without creating one first. This is __much__ easier said than done if you're starting from scratch, because it requires intimate knowledge about the the computer/device hardware that you're building the kernel to support. However, with the Raspberry Pis (and many other ARM devices) there is such a thing as a 'default config', or 'defconfig', that can be called to build the kernel '.config' file for you and save a lot of time and effort (and unfortunately a huge amount of education and experience is also wasted in this process). So in the interest of saving time, let's do it the easy and lazy way for this example...
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 # #
 # Automatically generated file; DO NOT EDIT. # Automatically generated file; DO NOT EDIT.
-# Linux/arm64 5.19.9 Kernel Configuration+# Linux/arm64 6.1.57 Kernel Configuration
 # #
-CONFIG_CC_VERSION_TEXT="gcc (GCC) 13.2.0"+CONFIG_CC_VERSION_TEXT="aarch64-linux-gcc (GCC) 11.2.0"
 CONFIG_CC_IS_GCC=y CONFIG_CC_IS_GCC=y
-CONFIG_GCC_VERSION=120200+CONFIG_GCC_VERSION=110200
 CONFIG_CLANG_VERSION=0 CONFIG_CLANG_VERSION=0
 CONFIG_AS_IS_GNU=y CONFIG_AS_IS_GNU=y
-CONFIG_AS_VERSION=23900+CONFIG_AS_VERSION=23800
 root@slackware:/tmp/linux-rpi# </code> root@slackware:/tmp/linux-rpi# </code>
  
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 # If you need to install any of the pre-requisite software here are the links [**NB: check for updates!**]: # If you need to install any of the pre-requisite software here are the links [**NB: check for updates!**]:
  
-[[ftp://ftp.arm.slackware.com/slackwarearm/slackwarearm-current/slackware/a/]] # Slackware ARM current - gawk package. \\ +[[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-15.0/slackware/a/]] # Slackware ARM 15.0 - gawk package. \\ 
-[[ftp://ftp.arm.slackware.com/slackwarearm/slackwarearm-current/slackware/d/]] # Slackware ARM current - git package. \\ +[[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-15.0/slackware/d/]] # Slackware ARM 15.0 - git package. \\ 
-[[ftp://ftp.arm.slackware.com/slackwarearm/slackwarearm-current/slackware/d/]] # Slackware ARM current - bison package. \\ +[[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-15.0/slackware/d/]] # Slackware ARM 15.0 - bison package. \\ 
-[[ftp://ftp.arm.slackware.com/slackwarearm/slackwarearm-current/slackware/d/]] # Slackware ARM current - flex package. \\ +[[http://ftp.arm.slackware.com/slackwarearm/slackwarearm-15.0/slackware/d/]] # Slackware ARM 15.0 - flex package. \\ 
 [[https://www.github.com/raspberrypi/]] # Raspberry Pi Foundation GitHub repository Linux kernel and boot-firmware source. \\ [[https://www.github.com/raspberrypi/]] # Raspberry Pi Foundation GitHub repository Linux kernel and boot-firmware source. \\
 [[https://ftp.gnu.org/gnu/]] # gcc, binutils, glibc, gmp, mpc, mpfr package source. \\  [[https://ftp.gnu.org/gnu/]] # gcc, binutils, glibc, gmp, mpc, mpfr package source. \\ 
-[[ftp://gcc.gnu.org/pub/gcc/infrastructure]] # cloog, isl package source.+[[https://gcc.gnu.org/pub/gcc/infrastructure]] # cloog, isl package source.
  
 # Documentation which assisted in this guide: # Documentation which assisted in this guide:
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 <!-- * Contributions by [[wiki:user:yyy | User Y]] --> <!-- * Contributions by [[wiki:user:yyy | User Y]] -->
  
-* Originally written by [[wiki:user:exaga | Exaga]] - 2022-09-19 18:38:25 [GMT]+* Originally written by [[wiki:user:exaga | Exaga]] - 2023-10-15 16:09:17 [UTC]
  
 <!-- Please do not modify anything below, except adding new tags.--> <!-- Please do not modify anything below, except adding new tags.-->

Trace: • inst_sa64_rk3399_rockpro64 • zfs_home • common_software

howtos:hardware:arm:gcc-13.x_aarch64_cross-compiler ()