#!/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"