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lfs/build.sh

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#!/bin/bash
export LINUX_VERSION="6.12.1"
# Function to handle errors
error_handler() {
local exit_code=$?
local line_number=$1
local file_name=$2
echo "Error in file: $file_name, line: $line_number, reason: Command exited with status $exit_code"
}
# Set the trap to catch errors
trap 'error_handler $LINENO $0' ERR
set -eo pipefail
if [ ! -d "./sources" ]; then
echo "Run this script from the right directory"
exit 1
fi
export BASE_DIR=$(pwd)
if [ -z "$ARCH" ]; then
echo "You must set a target architecture among supported ones:"
echo "i386"
echo "x86_64"
echo "armv5"
exit 1
fi
if [ -z "$LFS_TGT" ]; then
if [ -z "$GNUEABI" ]; then
export GNUEABI="gnu"
fi
export LFS_TGT="$ARCH-lfs-linux-$GNUEABI"
echo "Target triplet set to '$LFS_TGT'. You can specify another one with the LFS_TGT env var."
fi
if [ ! -d "$LFS_TGT" ]; then
export LFS="$(pwd)/out/$LFS_TGT/rootfs"
echo "Target rootfs set to '$LFS_TGT'. You can override this by setting the LFS_TGT env var."
fi
# test bash
bash --version
echo ""
# test rsync
rsync --version
echo ""
# test clang
clang --version
echo ""
# test lld
ld --version
echo ""
make --version
echo ""
# Create the target directory
mkdir -p "$LFS"
export STEPS_DIR="$LFS/../steps/"
mkdir -vp "$STEPS_DIR"
export LFS_TOOLS="$LFS/tools"
mkdir -vp "$LFS_TOOLS"
export PATH="$LFS_TOOLS/bin/:$PATH"
export LFS_BUILD="$LFS/../"
unset CFLAGS
# Create a directory layout
if [ ! -d "$LFS/etc" ]; then
mkdir -pv $LFS/{etc,var} $LFS/usr/{bin,lib,sbin}
for i in bin lib sbin; do
ln -sv usr/$i $LFS/$i
done
case $ARCH in
x86_64) mkdir -pv $LFS/lib64 ;;
esac
fi
# Build binutils
if [ ! -f "$STEPS_DIR/binutils" ]; then
if [ ! -d "$LFS_BUILD/binutils" ]; then
tar -xf "$BASE_DIR/sources/binutils-2.43.tar.zst"
mv "binutils-2.43" "$LFS_BUILD/binutils"
fi
cd "$LFS_BUILD/binutils"
mkdir -vp build
cd build
"../configure" \
--prefix=$LFS_TOOLS \
--with-sysroot=$LFS \
--target=$LFS_TGT \
--with-gnu-as \
--with-gnu-ld \
--enable-ld=default \
--enable-shared \
--disable-nls \
--enable-gprofng=no \
--disable-werror \
--enable-new-dtags \
--disable-multilib \
--disable-libquadmath \
--disable-libquadmath-support \
--enable-plugins \
--enable-deterministic-archives \
--enable-default-hash-style=gnu
#make configure-host
make -j 32
make -j 32 install
cd "$BASE_DIR"
#rm -rf "$LFS_BUILD/binutils"
touch "$STEPS_DIR/binutils"
fi
# Install kernel headers
if [ ! -f "$STEPS_DIR/linux-headers" ]; then
if [ ! -d "$LFS_BUILD/linux" ]; then
tar -xzf "$BASE_DIR/sources/linux-$LINUX_VERSION.tar.gz"
mv "linux-$LINUX_VERSION" "$LFS_BUILD/linux"
fi
cd "$LFS_BUILD/linux"
make mrproper
make headers_install ARCH="$ARCH" INSTALL_HDR_PATH="$LFS/usr"
cd "$BASE_DIR"
#rm -rf "$LFS_BUILD/linux"
touch "$STEPS_DIR/linux-headers"
fi
# Build gcc
if [ ! -f "$STEPS_DIR/gcc-step1" ]; then
bash unpack-gcc.sh
cd "$LFS_BUILD/gcc/"
# # On x86_64 hosts, set the default directory name for 64-bit libraries to “lib”
# case $(uname -m) in
# x86_64)
# sed -e '/m64=/s/lib64/lib/' \
# -i.orig gcc/config/i386/t-linux64
# ;;
# esac
mkdir -vp build
cd build
"../configure" \
--target=$LFS_TGT \
--host=$(../config.guess) \
--build=$(../config.guess) \
--prefix=$LFS_TOOLS \
--with-glibc-version=2.40 \
--with-sysroot=$LFS \
--with-newlib \
--disable-gdbtk \
--disable-shared \
--without-headers \
--enable-default-pie \
--enable-default-ssp \
--disable-nls \
--disable-multilib \
--disable-threads \
--disable-libatomic \
--disable-libgomp \
--disable-libquadmath \
--disable-libquadmath-support \
--disable-libssp \
--disable-libvtv \
--disable-libstdcxx \
--disable-decimal-float \
--enable-languages=c
make -j 32 all-gcc # if build fails add --disable-libsanitizer
make -j 32 install-gcc
make check-gcc RUNTESTFLAGS=--target_board=$ARCH-sim
cd "$BASE_DIR"
rm -rf "$LFS_BUILD/gcc/build" # Do not remove the whole gcc directory: we need it for libstdc++
touch "$STEPS_DIR/gcc-step1"
fi
# From now on use
export BUILD_CC=gcc
export CC="$LFS_TGT-gcc"
export CXX="$LFS_TGT-g++"
export AS="$LFS_TGT-as"
export LD="$LFS_TGT-ld"
export AR="$LFS_TGT-ar"
export RANLIB="$LFS_TGT-ranlib"
# remove hardening options for building libraries
export CFLAGS="-U_FORTIFY_SOURCE -O2"
export CPPFLAGS="-U_FORTIFY_SOURCE -O2"
export LD_LIBRARY_PATH_old="$LD_LIBRARY_PATH"
unset LD_LIBRARY_PATH
# build glibc
if [ ! -f "$STEPS_DIR/glibc" ]; then
if [ ! -d "$LFS_BUILD/glibc" ]; then
tar -xzf "$BASE_DIR/sources/glibc-2.40.tar.gz"
mv "glibc-2.40" "$LFS_BUILD/glibc"
fi
cd "$LFS_BUILD/glibc"
mkdir -vp build
cd build
echo "rootsbindir=/usr/sbin" > configparms
echo 'slibdir=/lib' >> configparms
echo 'rtlddir=/lib' >> configparms
echo 'sbindir=/bin' >> configparms
echo 'build-programs=no' >> configparms
"../configure" \
--prefix=/usr \
--target=$LFS_TGT \
--host=$LFS_TGT \
--build=$(../scripts/config.guess) \
--with-headers=$LFS/usr/include \
--with-binutils=$LFS_TOOLS/bin \
--without-cvs \
--disable-nls \
--disable-sanity-checks \
--enable-kernel=4.19 \
--disable-debug \
--disable-profile \
--without-selinux \
--without-gd \
--disable-nscd \
--enable-hacker-mode \
libc_cv_slibdir=/usr/lib \
libc_cv_forced_unwind=yes \
libc_cv_c_cleanup=yes
make install-bootstrap-headers=yes install_root=$LFS install-headers
make -j4 csu/subdir_lib
if [ -f "csu/crt1.o" ]; then
install csu/crt1.o $LFS/usr/lib
fi
if [ -f "csu/crti.o" ]; then
install csu/crti.o $LFS/usr/lib
fi
if [ -f "csu/crtn.o" ]; then
install csu/crtn.o $LFS/usr/lib
fi
if [ -f "csu/Scrt1.o" ]; then
install csu/Scrt1.o $LFS/usr/lib
fi
if [ -f "csu/crtbeginS.o" ]; then
install csu/crtbeginS.o $LFS/usr/lib
fi
$LFS_TGT-gcc \
-nostdlib \
-nostartfiles \
-shared \
-x c /dev/null \
-o $LFS/usr/lib/libc.so
#touch $LFS/usr/include/gnu/stubs.h
#export LD_LIBRARY_PATH="$LD_LIBRARY_PATH_old"
#make DESTDIR=$LFS install
#make install_root="$pkgdir"/usr/$_target install
#sed '/RTLDLIST=/s@/usr@@g' -i $LFS/usr/bin/ldd
cd "$BASE_DIR"
#rm -rf "$LFS_BUILD/glibc"
touch "$STEPS_DIR/glibc"
fi
unset CC
unset CXX
unset LD
unset AS
unset AR
unset RANLIB
unset OBJDUMP
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH_old"
if [ ! -f "$STEPS_DIR/gcc-step2" ]; then
#if [ ! -d "$LFS_BUILD/gcc/build" ]; then
# echo "'$LFS_BUILD/gcc/build' directory is supposed to exist. Error."
# exit 1
#fi
#cd "$LFS_BUILD/gcc/build"
cd "$LFS_BUILD/gcc"
mkdir -vp build
cd build
# ../configure is already done
"../configure" \
--target=$LFS_TGT \
--host=$(../config.guess) \
--build=$(../config.guess) \
--prefix=$LFS_TOOLS \
--with-glibc-version=2.40 \
--with-sysroot=$LFS \
--enable-default-pie \
--enable-default-ssp \
--disable-nls \
--disable-multilib \
--disable-libatomic \
--disable-libgomp \
--disable-libquadmath \
--disable-libquadmath-support \
--disable-libssp \
--disable-libvtv \
--disable-libstdcxx \
--disable-decimal-float \
--enable-languages=c
make -j 32 all-target-libgcc # if build fails add --disable-libsanitizer
make -j 32 install-target-libgcc
cd "$BASE_DIR"
#rm -rf "$LFS_BUILD/gcc/build" # Do not remove the whole gcc directory: we need it for libstdc++
touch "$STEPS_DIR/gcc-step2"
fi
export CC="$LFS_TGT-gcc"
export CXX="$LFS_TGT-g++"
export AS="$LFS_TGT-as"
export LD="$LFS_TGT-ld"
export AR="$LFS_TGT-ar"
export RANLIB="$LFS_TGT-ranlib"
# remove hardening options for building libraries
export CFLAGS="-U_FORTIFY_SOURCE -O2"
export CPPFLAGS="-U_FORTIFY_SOURCE -O2"
export LD_LIBRARY_PATH_old="$LD_LIBRARY_PATH"
unset LD_LIBRARY_PATH
if [ ! -f "$STEPS_DIR/glibc-step2" ]; then
if [ ! -d "$LFS_BUILD/glibc/build" ]; then
echo "'$LFS_BUILD/glibc/build' is supposed to exist. Error."
exit 1
fi
cd "$LFS_BUILD/glibc/build"
# Configuration is done already
# Remove the stub glibc from before
rm $LFS/usr/lib/libc.so
make -j 32
make install_root=$LFS install
cd "$BASE_DIR"
#rm -rf "$LFS_BUILD/glibc"
touch "$STEPS_DIR/glibc-step2"
fi
#unset CC
#unset CXX
#unset LD
#unset AS
#unset AR
#unset RANLIB
#unset OBJDUMP
#export LD_LIBRARY_PATH="$LD_LIBRARY_PATH_old"
# build the rest of gcc
if [ ! -f "$STEPS_DIR/gcc-step3" ]; then
if [ ! -d "$LFS_BUILD/gcc/build" ]; then
echo "'$LFS_BUILD/gcc/build' directory is supposed to exist. Error."
exit 1
fi
cd "$LFS_BUILD/gcc/build"
make -j 32 all
make -j 32 install
cd "$BASE_DIR"
#rm -rf "$LFS_BUILD/gcc"
touch "$STEPS_DIR/gcc-step3"
fi
# test the cross toolchain
which -- $LFS_TGT-as || echo $LFS_TGT-as is not in the PATH
echo 'int main(){}' | "$LFS_TGT-gcc" -xc -
"$LFS_TGT-readelf" -l a.out > test_compiler
cat test_compiler | grep ld-linux
rm -v a.out test_compiler
# build m4
#if [ ! -f "$STEPS_DIR/m4" ]; then
# if [ ! -d "$LFS_BUILD/m4" ]; then
# tar -xzf "$BASE_DIR/sources/m4-1.4.19.tar.gz"
# mv "m4-1.4.19" "$LFS_BUILD/m4"
# fi
# cd "$LFS_BUILD/m4"
#
# #mkdir -vp build
# #cd build
#
# echo "rootsbindir=/usr/sbin" > configparms
#
# "./configure" \
# --prefix=/usr \
# --target=$LFS_TGT \
# --host=$(build-aux/config.guess) \
# --build=$(build-aux/config.guess) \
#
# make -j 32
# make DESTDIR=$LFS install
#
# cd "$BASE_DIR"
# rm -rf "$LFS_BUILD/m4"
# touch "$STEPS_DIR/m4"
#fi
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