# Copyright Advanced Micro Devices, Inc.
# SPDX-License-Identifier: MIT

# Project wide compiler configuration.

# On win32 only support embedded debug databases project wide.
# This improves compatibility with ccache and sccache:
# https://github.com/ccache/ccache/issues/1040
if(WIN32 AND NOT DEFINED CMAKE_MSVC_DEBUG_INFORMATION_FORMAT)
  set(CMAKE_MSVC_DEBUG_INFORMATION_FORMAT "$<$<CONFIG:Debug,RelWithDebInfo>:Embedded>")
endif()

if(WIN32 AND NOT MSVC AND NOT THEROCK_DISABLE_MSVC_CHECK)
  message(FATAL_ERROR
      "Bootstrap compiler was expected to be MSVC (cl.exe). Instead found:\n"
      "  Detected CMAKE_C_COMPILER: ${CMAKE_C_COMPILER}\n"
      "  Detected CMAKE_CXX_COMPILER: ${CMAKE_CXX_COMPILER}\n"
      "To use MSVC, try one of these:\n"
      "  * Use one of the MSVC command prompts like `x64 Native Tools Command Prompt for VS 2022`\n"
      "  * In your existing terminal, run `vcvars64.bat` from e.g. `C:\\Program Files (x86)\\Microsoft Visual Studio\\2022\\BuildTools\\VC\\Auxiliary\\Build`\n"
      "  * Set `-DCMAKE_C_COMPILER=cl.exe -DCMAKE_CXX_COMPILER=cl.exe`\n"
      "Set THEROCK_DISABLE_MSVC_CHECK to bypass this check.")
endif()

if(MSVC AND MSVC_VERSION LESS_EQUAL 1941 AND NOT THEROCK_DISABLE_MSVC_VERSION_CHECK)
  # See https://github.com/ROCm/TheRock/issues/711. We can probably remove this
  # check after adding openmp to LLVM_ENABLE_RUNTIMES in pre_hook_amd-llvm.cmake.
  #
  # For the compiler version mapping, see
  # https://learn.microsoft.com/en-us/cpp/overview/compiler-versions
  message(FATAL_ERROR
      "Detected MSVC_VERSION is too old and may encounter OpenMP linker errors.\n"
      "  Detected MSVC_VERSION: ${MSVC_VERSION}\n"
      "  Detected MSVC_TOOLSET_VERSION: ${MSVC_TOOLSET_VERSION}\n"
      "  Detected CMAKE_CXX_COMPILER_VERSION: ${CMAKE_CXX_COMPILER_VERSION}\n"
      "We recommend at least Visual Studio [Build Tools] version 17.12.*, with:\n"
      "  * MSVC_VERSION 1942\n"
      "  * CMAKE_CXX_COMPILER_VERSION version 19.42.*\n"
      "Set THEROCK_DISABLE_MSVC_VERSION_CHECK to bypass this check.")
endif()

if(MSVC AND CMAKE_SIZEOF_VOID_P EQUAL 4)
  message(FATAL_ERROR
    "Cannot build 32-bit ROCm with MSVC. You must enable the Windows x64 "
    "development tools and rebuild.\n"
    "  Detected CMAKE_CXX_COMPILER: ${CMAKE_CXX_COMPILER}")
endif()

# macOS-specific compiler checks
if(APPLE)
  # Verify we're using AppleClang or Clang on macOS
  if(NOT CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND NOT THEROCK_DISABLE_APPLECLANG_CHECK)
    message(FATAL_ERROR
        "macOS builds require AppleClang or Clang compiler.\n"
        "  Detected CMAKE_C_COMPILER_ID: ${CMAKE_C_COMPILER_ID}\n"
        "  Detected CMAKE_CXX_COMPILER_ID: ${CMAKE_CXX_COMPILER_ID}\n"
        "  Detected CMAKE_C_COMPILER: ${CMAKE_C_COMPILER}\n"
        "  Detected CMAKE_CXX_COMPILER: ${CMAKE_CXX_COMPILER}\n"
        "Ensure Xcode Command Line Tools are installed:\n"
        "  xcode-select --install\n"
        "Set THEROCK_DISABLE_APPLECLANG_CHECK to bypass this check.")
  endif()

  # Check for minimum macOS deployment target (13.0 Ventura)
  if(DEFINED CMAKE_OSX_DEPLOYMENT_TARGET AND CMAKE_OSX_DEPLOYMENT_TARGET VERSION_LESS "13.0")
    message(WARNING
        "macOS deployment target is ${CMAKE_OSX_DEPLOYMENT_TARGET}.\n"
        "TheRock recommends macOS 13.0 (Ventura) or later for best compatibility.")
  endif()

  # Default to ARM64 on Apple Silicon
  if(NOT DEFINED CMAKE_OSX_ARCHITECTURES)
    set(CMAKE_OSX_ARCHITECTURES "arm64" CACHE STRING "macOS architecture")
  endif()

  message(STATUS "macOS build configuration:")
  message(STATUS "  Compiler: ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}")
  message(STATUS "  Architecture: ${CMAKE_OSX_ARCHITECTURES}")
  if(DEFINED CMAKE_OSX_DEPLOYMENT_TARGET)
    message(STATUS "  Deployment target: ${CMAKE_OSX_DEPLOYMENT_TARGET}")
  endif()
endif()