#!/bin/bash

if ! type "include" >/dev/null 2>&1; then
  include() {
    . "$(cd "$(dirname "$1")" && pwd)/${2}"
  }
fi

include "${BASH_SOURCE[0]}" ./pragma_once.bash
if ! pragma_once ${BASH_SOURCE[0]}; then return 0; fi

include "${BASH_SOURCE[0]}" ./attach/export.bash
include "${BASH_SOURCE[0]}" ./patch/export.bash
include "${BASH_SOURCE[0]}" ./libc/export.bash
include "${BASH_SOURCE[0]}" ./base/export.bash

# =========================
# GLOBAL CONFIG (LLD BUILD)
# =========================

L_LLD_SRC_DIR=""
L_LLD_BUILD_DIR="/ae/bash/0_cmake_build_dir/lld"
L_LLD_INSTALL_DIR="/ae/bash/0_cmake_install_dir/lld"

L_LLD_CMAKE="/ae/opt/cmake/bin/cmake"
L_LLD_NINJA="/usr/bin/ninja"

L_LLD_TOOLCHAIN_FILE=""

L_LLD_LLVM_VERSION="llvmorg-22.1.8"

L_LLD_BUILD_TYPE="Release"

# =========================
# TOOLCHAIN SETTER
# =========================

lld_set_toolchain() {
  L_LLD_TOOLCHAIN_FILE="$1"
}

lld_use_clang() {
  L_LLD_TOOLCHAIN_FILE="${_library_root_dir_}/cmake_toolchain/mingw-clang.cmake"
}

lld_use_mingw() {
  L_LLD_TOOLCHAIN_FILE="${_library_root_dir_}/cmake_toolchain/mingw.cmake"
}

# =========================
# BUILD LLD (CLEAN VERSION)
# =========================

build_lld() {
  local src_dir=""
  ensure_repo_version src_dir "llvm" "${L_LLD_LLVM_VERSION}"
  L_LLD_SRC_DIR="${src_dir}/llvm"
  mkdir -p "${L_LLD_BUILD_DIR}"
  mkdir -p "${L_LLD_INSTALL_DIR}"

  local toolchain_arg=""
  if [[ -n "${L_LLD_TOOLCHAIN_FILE}" ]]; then
    toolchain_arg="-DCMAKE_TOOLCHAIN_FILE=${L_LLD_TOOLCHAIN_FILE}"
  fi

  local cmd
  cmd="${L_LLD_CMAKE} -S ${L_LLD_SRC_DIR} -B ${L_LLD_BUILD_DIR} ${toolchain_arg} -DCMAKE_INSTALL_PREFIX=${L_LLD_INSTALL_DIR} -DCMAKE_BUILD_TYPE=${L_LLD_BUILD_TYPE} -DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY -DLLVM_ENABLE_PROJECTS=lld -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_BENCHMARKS=OFF -DLLVM_INCLUDE_EXAMPLES=OFF"

  exec_record "${cmd}"

  exec_record "${L_LLD_CMAKE} --build ${L_LLD_BUILD_DIR} -j$(nproc)"

  exec_record "${L_LLD_CMAKE} --install ${L_LLD_BUILD_DIR}"
}

# =========================
# MINGW ENTRY
# =========================

build_mingw_lld() {
  local suffix="_629_1518"

  L_LLD_BUILD_DIR="${_root_}/0_cmake_build_dir/lld${suffix}"
  L_LLD_INSTALL_DIR="${_root_}/0_cmake_install_dir/lld${suffix}"

  lld_use_mingw
  build_lld

  return 0
}

# =========================
# CLANG ENTRY
# =========================

build_clang_lld() {
  local suffix="_clang"
  local toolchain_dir="${_library_root_dir_}/linux_shell/build_script/cmake_toolchain"
  L_LLD_TOOLCHAIN_FILE="${toolchain_dir}/mingw-clang.cmake"
  L_LLD_BUILD_DIR="${_root_}/0_cmake_build_dir/lld${suffix}"
  L_LLD_INSTALL_DIR="${_root_}/0_cmake_install_dir/lld${suffix}"

  lld_use_clang
  build_lld

  return 0
}