tested working

build-toolchain.sh

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+#!/bin/bash
+
+# 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 $0' ERR
+
+set -eo pipefail
+
+export BUILDER_ARCH="x86_64"
+export TOOLCHAIN_TRIPLET="$BUILDER_ARCH-linux-musl"
+
+export LINUX_VERSION="6.12.1"
+
+# automatic
+export BASE_DIR=$(pwd)
+export TOOLCHAIN_DIR="$BASE_DIR/out/$TOOLCHAIN_TRIPLET/toolchain/"
+export BUILD_DIR="$TOOLCHAIN_DIR/../build"
+export TOOLCHAIN_SYSROOT="$TOOLCHAIN_DIR/../sysroot/"
+
+export PATH="$TOOLCHAIN_DIR/bin/:$PATH"
+
+# Create the target directory
+mkdir -vp "${TOOLCHAIN_DIR}"
+mkdir -vp "${BUILD_DIR}"
+mkdir -vp "${TOOLCHAIN_SYSROOT}"
+
+export BUILD_MACHINE_TRIPLET=$(gcc -dumpmachine)
+#export TARGET_MACHINE_TRIPLET=$LFS_TGT
+
+## Build binutils
+#if [ ! -d "$BUILD_DIR/binutils" ]; then
+#    tar -xf "$BASE_DIR/sources/binutils-2.43.tar.zst"
+#    mv "binutils-2.43" "$BUILD_DIR/binutils"
+#fi
+#cd "$BUILD_DIR/binutils"
+#mkdir -vp "build-$TOOLCHAIN_TRIPLET"
+#cd        "build-$TOOLCHAIN_TRIPLET"
+#"../configure"                        \
+#    --prefix=$TOOLCHAIN_DIR           \
+#    --with-sysroot=$TOOLCHAIN_SYSROOT \
+#    --target=$TOOLCHAIN_TRIPLET       \
+#    --with-gnu-as                     \
+#    --with-gnu-ld                     \
+#    --enable-ld=default               \
+#    --disable-shared                  \
+#    --disable-nls                     \
+#    --enable-gprofng=no               \
+#    --disable-werror                  \
+#    --enable-new-dtags                \
+#    --disable-multilib                \
+#    --disable-libquadmath             \
+#    --disable-libquadmath-support     \
+#    --disable-plugins                 \
+#    --enable-deterministic-archives   \
+#    --enable-default-hash-style=gnu
+##make configure-host
+#make -j 32
+#make -j 32 install
+#cd "$BASE_DIR"
+#
+## Install kernel headers
+#if [ ! -d "$BUILD_DIR/linux" ]; then
+#    tar -xzf "$BASE_DIR/sources/linux-$LINUX_VERSION.tar.gz"
+#    mv "linux-$LINUX_VERSION" "$BUILD_DIR/linux"
+#fi
+#cd "$BUILD_DIR/linux"
+#make mrproper
+#make headers_install ARCH="$BUILDER_ARCH" INSTALL_HDR_PATH="$TOOLCHAIN_DIR/"
+#cd "$BASE_DIR"
+#
+#
+## Build gcc
+#export CFLAGS="$CFLAGS -static "
+#export LDFLAGS="$LDFLAGS -Bstatic "
+#bash unpack-gcc.sh "$BUILD_DIR"
+#cd "$BUILD_DIR/gcc/"
+#mkdir -vp "build-$-step1"
+#cd        "build-$-step1"
+#"../configure"                        \
+#    --target=$TOOLCHAIN_TRIPLET       \
+#    --host=${BUILD_MACHINE_TRIPLET}   \
+#    --build=${BUILD_MACHINE_TRIPLET}  \
+#    --prefix=$TOOLCHAIN_DIR           \
+#    --with-glibc-version=2.40         \
+#    --with-sysroot=$TOOLCHAIN_SYSROOT \
+#    --with-newlib                     \
+#    --disable-shared                  \
+#    --disable-gdbtk                   \
+#    --without-headers                 \
+#    --enable-default-pie              \
+#    --enable-default-ssp              \
+#    --disable-nls                     \
+#    --disable-multilib                \
+#    --disable-threads                 \
+#    --disable-libatomic               \
+#    --disable-libmudflap              \
+#    --disable-libgomp                 \
+#    --disable-libquadmath             \
+#    --disable-libquadmath-support     \
+#    --disable-libssp                  \
+#    --disable-libvtv                  \
+#    --disable-libstdcxx               \
+#    --disable-decimal-float           \
+#    --disable-libsanitizer            \
+#    --enable-languages=c
+#make -j 32
+#make -j 32 install
+#cd "$BASE_DIR"
+#
+## From now on use
+#export BUILD_CC=gcc
+#export CC="$TOOLCHAIN_TRIPLET-gcc"
+#export CXX="$TOOLCHAIN_TRIPLET-g++"
+#export AS="$TOOLCHAIN_TRIPLET-as"
+#export LD="$TOOLCHAIN_TRIPLET-ld"
+#export AR="$TOOLCHAIN_TRIPLET-ar"
+#export RANLIB="$TOOLCHAIN_TRIPLET-ranlib"
+#export STRIP="$TOOLCHAIN_TRIPLET-strip"
+#export OBJDUMP="$TOOLCHAIN_TRIPLET-objdump"
+## remove hardening options for building libraries
+#export CFLAGS="-U_FORTIFY_SOURCE -O2 -static "
+#export CPPFLAGS="-U_FORTIFY_SOURCE -O2 -static"
+#export LDFLAGS=" -Bstatic "
+#export LD_LIBRARY_PATH_old="$LD_LIBRARY_PATH"
+#unset LD_LIBRARY_PATH
+#
+## build musl
+#if [ ! -d "$BUILD_DIR/musl" ]; then
+#    tar -xzf "$BASE_DIR/sources/musl-1.2.5.tar.gz"
+#    mv "musl-1.2.5" "$BUILD_DIR/musl"
+#fi
+#cd "$BUILD_DIR/musl"
+#mkdir -vp "build-$TOOLCHAIN_TRIPLET"
+#cd        "build-$TOOLCHAIN_TRIPLET"
+#"../configure" --prefix=/
+##    CROSS_COMPILE="${TOOLCHAIN_TRIPLET}-" \    
+##    --target=${TOOLCHAIN_TRIPLET}
+#
+#make -j 32
+#DESTDIR="${TOOLCHAIN_DIR}" make install
+#cd "$BASE_DIR"
+
+# build gcc (step2)
+export CFLAGS="$CFLAGS -static "
+export LDFLAGS="$LDFLAGS -Bstatic "
+bash unpack-gcc.sh "$BUILD_DIR"
+cd "$BUILD_DIR/gcc/"
+mkdir -vp "build-step2"
+cd        "build-step2"
+"../configure"                        \
+    --target=$TOOLCHAIN_TRIPLET       \
+    --build=${TOOLCHAIN_TRIPLET}      \
+    --prefix=$TOOLCHAIN_DIR           \
+    --with-glibc-version=2.40         \
+    --with-sysroot=$TOOLCHAIN_SYSROOT \
+    --with-newlib                     \
+    --disable-shared                  \
+    --disable-gdbtk                   \
+    --without-headers                 \
+    --enable-default-pie              \
+    --enable-default-ssp              \
+    --disable-nls                     \
+    --disable-multilib                \
+    --disable-threads                 \
+    --disable-libatomic               \
+    --disable-libmudflap              \
+    --disable-libgomp                 \
+    --disable-libquadmath             \
+    --disable-libquadmath-support     \
+    --disable-libssp                  \
+    --disable-libvtv                  \
+    --disable-libstdcxx               \
+    --disable-decimal-float           \
+    --disable-libsanitizer            \
+    --enable-languages=c
+make 
+make -j 32 install
+cd "$BASE_DIR"