#
# Copyright(c) 2006 to 2018 ADLINK Technology Limited and others
#
# This program and the accompanying materials are made available under the
# terms of the Eclipse Public License v. 2.0 which is available at
# http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
# v. 1.0 which is available at
# http://www.eclipse.org/org/documents/edl-v10.php.
#
# SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
#
cmake_minimum_required(VERSION 3.3) # For IN_LIST

option(ANALYZE_BUILD "Enable static analysis during build" OFF)

if(ANALYZE_BUILD)
  get_property(languages GLOBAL PROPERTY ENABLED_LANGUAGES)
  set(scan_build_supported Clang AppleClang GNU)

  if("C" IN_LIST languages)
    include(CheckCCompilerFlag)

    if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
      set(ANALYZE_C_BUILD_FLAG "/analyze")
    elseif(CMAKE_C_COMPILER_ID IN_LIST scan_build_supported)
      message(STATUS "Static analysis for C using ${CMAKE_C_COMPILER_ID}-compiler is available by using 'scan-build' manually only")
    endif()

    if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
      CHECK_C_COMPILER_FLAG(${ANALYZE_C_BUILD_FLAG} C_COMPILER_HAS_ANALYZE_BUILD)

      if(C_COMPILER_HAS_ANALYZE_BUILD)
        if(CMAKE_GENERATOR MATCHES "Visual Studio")
          # $<COMPILE_LANGUAGE:...> may not be used with Visual Studio generators.
          add_compile_options(${ANALYZE_C_BUILD_FLAG})
        else()
          add_compile_options($<$<COMPILE_LANGUAGE:C>:${ANALYZE_C_BUILD_FLAG}>)
        endif()
      endif()
    endif()
  endif()

  if("CXX" IN_LIST languages)
    include(CheckCXXCompilerFlag)

    if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
      set(ANALYZE_CXX_BUILD_FLAG "/analyze")
    elseif(CMAKE_C_COMPILER_ID IN_LIST scan_build_supported)
      message(STATUS "Static analysis for CXX using ${CMAKE_CXX_COMPILER_ID}-compiler is available by using 'scan-build' manually only")
    endif()

    if(DEFINED ANALYZE_CXX_BUILD_FLAG)
      CHECK_CXX_COMPILER_FLAG(${ANALYZE_CXX_BUILD_FLAG} CXX_COMPILER_HAS_ANALYZE_BUILD)

      if(CXX_COMPILER_HAS_ANALYZE_BUILD)
        if(CMAKE_GENERATOR MATCHES "Visual Studio")
          add_compile_options(${ANALYZE_CXX_BUILD_FLAG})
        else()
          add_compile_options($<$<COMPILE_LANGUAGE:CXX>:${ANALYZE_CXX_BUILD_FLAG}>)
        endif()
      endif()
    endif()
  endif()
endif()