#=========================== begin_copyright_notice ============================
#
# Copyright (C) 2017-2021 Intel Corporation
#
# SPDX-License-Identifier: MIT
#
#============================ end_copyright_notice =============================

##############################################
##############################################
# IGA dynamic and static library generation

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

##############################################
# compute the version string from the git repo
execute_process(
    COMMAND git rev-parse --short HEAD
    OUTPUT_VARIABLE GIT_COMMIT
    OUTPUT_STRIP_TRAILING_WHITESPACE
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
#
execute_process(
    COMMAND git diff-index --quiet HEAD --
    RESULT_VARIABLE GIT_DIRTY
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})

set(IGA_VERSION_SUFFIX "")
if(GIT_COMMIT)
    set(IGA_VERSION_DIRTY_TAG "")
    if (NOT ${GIT_DIRTY} EQUAL 0)
        set(IGA_VERSION_DIRTY_TAG "+")
    endif()
    set(IGA_VERSION_SUFFIX "${IGA_VERSION_SUFFIX}-${GIT_COMMIT}${IGA_VERSION_DIRTY_TAG}")
endif()

add_definitions(-DIGA_VERSION_SUFFIX="${IGA_VERSION_SUFFIX}")
message("--  - IGA_VERSION_SUFFIX:    ${IGA_VERSION_SUFFIX}")

##############################################
# add GED libraries and includes
if (CMAKE_SIZEOF_VOID_P EQUAL 4)
    set(GED_INCLUDE "../GEDLibrary/${GED_BRANCH}/build/autogen-ia32")
else()
    set(GED_INCLUDE "../GEDLibrary/${GED_BRANCH}/build/autogen-intel64")
endif()
include_directories(${GED_INCLUDE} "../GEDLibrary/${GED_BRANCH}/Source/common")

include_directories("../../../inc")

##############################################
# Add subdirectories with all the various IGA sources
add_subdirectory(api)
add_subdirectory(Backend)
add_subdirectory(Frontend)
add_subdirectory(IR)
add_subdirectory(MemManager)
add_subdirectory(Models)
add_subdirectory(Timer)

if (LINK_AS_STATIC_LIB)
    win_static_runtime()
else ()
    win_dynamic_runtime()
endif()

# Mimick IGC/MDF warnings within IGA library on our side to ensure we don't
# break the build.  We're a little more strict here.
if (MSVC)
  # unhandled enum case not handled in switch (from comp/igc I believe)
  add_compile_options(/w14062)
  # add_compile_options(/w14100) # unreferenced parameter. Enable caused Release build failure
  add_compile_options(/w14189) # unreachable code
  add_compile_options(/w14244) # implicit narrowing
  add_compile_options(/w14245) # signed/unsigned conversion
  add_compile_options(/w14389) # signed/unsigned compare
  # add_compile_options(/w14456) # var name shadows outer scope var
  # add_compile_options(/w14458) # var name shadows field
  # add_compile_options(/w14505) # unreferenced local function (static). Enable caused Release build failure
  add_compile_options(/w14701) # warn on use of uninitialized variables

  # warnings are errors
  add_compile_options(/WX)
else()
  add_compile_options(-Wmissing-declarations)
endif()

##############################################
# disable exception on IGC builds
if (IGC_BUILD)
    get_property(OLD_OPTS DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY COMPILE_DEFINITIONS)

    set(NEW_OPTS "")
    foreach(opt ${OLD_OPTS})
       if("${opt}" MATCHES "_HAS_EXCEPTIONS=0")
          set(NEW_OPTS "${NEW_OPTS};_HAS_EXCEPTIONS=1")
       else()
          set(NEW_OPTS "${NEW_OPTS};${opt}")
       endif()
    endforeach(opt)

    if(MSVC)
        add_compile_options(/EHsc)
    else(MSVC)
        add_compile_options(-fexceptions)
    endif(MSVC)

    set_property(DIRECTORY PROPERTY COMPILE_DEFINITIONS
        COMPILE_DEFINITIONS                        "${NEW_OPTS}"
      )
endif(IGC_BUILD)

if (MSVC)
    add_compile_options(/Gy)
    # parallel build
    add_compile_options(/MP)
endif()

##############################################################################
# IGA (dll and lib) sources
##############################################################################

# files in the root directory (TODO: move to ./misc or ./iga or ./util (need better name))
set(IGA_Misc
    ${CMAKE_CURRENT_SOURCE_DIR}/ColoredIO.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/ColoredIO.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/EnumBitset.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/ErrorHandler.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/InstDiff.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/InstDiff.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/asserts.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/asserts.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/bits.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/deprecation.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/strings.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/strings.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/system.cpp
    ${CMAKE_CURRENT_SOURCE_DIR}/system.hpp
    ${CMAKE_CURRENT_SOURCE_DIR}/version.hpp
)

set(IGA_Frontend
    ${IGA_Frontend_Formatter}
    ${IGA_Frontend_Parser}
)

set(IGA_Backend_GED
    ${IGA_Backend_GED_EncoderOnly}
    ${IGA_Backend_GED_Decoder}
)


# purposely exclude iga.cpp since it must be compiled differently for .lib/.a and .so/.dll
set(IGA_SOURCES
    ${IGA_API_Headers}
    ${IGA_API_Source}
    ${IGA_Backend}
    ${IGA_Backend_GED}
    ${IGA_Backend_Messages}
    ${IGA_Backend_Native}
    ${IGA_Backend_Native_Xe}
    ${IGA_Frontend}
    ${IGA_IR}
    ${IGA_MemManager}
    ${IGA_Misc}
    ${IGA_Models}
    ${IGA_Timer}
    ${GED_INCLUDE}/ged.h
)


set(BUILD_EXPOSURE_FLAG "")

set(IGA_DEFINITIONS _CONSOLE _LIB ${VSVERSION} ${GED_BRANCH})
if (MSVC)
    if(IGC_OPTION__UNIVERSAL_DRIVER)
        set(IGA_LINK_FLAGS "/OPT:REF /OPT:ICF /INCREMENTAL:NO /NODEFAULTLIB:kernel32.lib")
    else()
        set(IGA_LINK_FLAGS "/OPT:REF /OPT:ICF /INCREMENTAL:NO")
    endif()
    set(IGA_COMPILER_FLAGS "/GL")
else ()
    if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
        add_definitions("-Wno-logical-op-parentheses")
    endif()
    set(IGA_LINK_FLAGS "")
    set(IGA_COMPILER_FLAGS "")
endif()

if(UNIX)
    set(FPIC_FLAG "-fPIC")
endif(UNIX)

# TODO: remove this commented out block if
# if(ANDROID AND MEDIA_IGA)
#    set(NDK_Libstdcxx $ENV{ANDROID_NDK}/sources/cxx-stl/llvm-libc++/libcxx)
#    set(Extra_Android_Inc ${NDK_Libstdcxx}/include ${ANDROID_NDK}/sources/android/support/include ${NDK_Libstdcxx}/include/backward)
#    include_directories(${Extra_Android_Inc})
#    link_directories($ENV{ANDROID_NDK}/sources/cxx-stl/llvm-libc++/libs/$ENV{CMRT_ARCH})
# endif(ANDROID AND MEDIA_IGA)

##############################################################################
# iga_o##.lib
#
# Partial IGA object library (everything except the iga.cpp interface,
# which needs to be compiled differently for .lib and .dll/.so targets.
##############################################################################
add_library(IGA_OLIB OBJECT ${IGA_SOURCES})
set_target_properties(IGA_OLIB PROPERTIES
    OUTPUT_NAME                                "iga_o${TARGET_MODIFIER}"
    COMPILE_DEFINITIONS                        "${IGA_DEFINITIONS}"
    COMPILER_FLAGS                             "${IGA_COMPILER_FLAGS}"
    LINK_FLAGS                                 "${IGA_LINK_FLAGS}"
    FOLDER                                     "Libraries/IGAProjs"
  )

if(IGC_BUILD AND MSVC)
    # set up standard defines from the common WDK path.
    bs_set_wdk(IGA_OLIB)
endif()

##############################################################################
# iga_s##.lib
#
# IGA static library.  Combines piga.lib with the api/iga.cpp interface file
##############################################################################
    add_library(IGA_SLIB STATIC $<TARGET_OBJECTS:GEDLibrary> $<TARGET_OBJECTS:IGA_OLIB> ${IGA_API})

set(IGA_SLIB_LINK_FLAGS "${IGA_LINK_FLAGS}")
if(MSVC)
    set(IGA_SLIB_LINK_FLAGS "${IGA_SLIB_LINK_FLAGS} /LTCG")
endif()
set(IGA_SLIB_DEFINITIONS ${IGA_DEFINITIONS} IGA_BUILDING_LIB)



# The Windows DLL also produces an import library whose name conflicts with
# this static library.  Hence, we must call this something other than the
    set_target_properties(IGA_SLIB PROPERTIES
        OUTPUT_NAME                                "iga_s${TARGET_MODIFIER}"
      )
set_target_properties(IGA_SLIB PROPERTIES
    COMPILE_DEFINITIONS                        "${IGA_SLIB_DEFINITIONS}"
    COMPILER_FLAGS                             "${IGA_COMPILER_FLAGS}"
    LINK_FLAGS                                 "${IGA_SLIB_LINK_FLAGS}"
    FOLDER                                     "Libraries/IGAProjs"
  )

if(IGC_BUILD AND MSVC)
    # set up standard defines from the common WDK path
    bs_set_wdk(IGA_SLIB)
endif()

##############################################################################
# iga_enc##.lib
#
# The IGA static library that includes only the encoder (no parser or decoder)
# and is compiled without C++ exception support (for IGC compatibility).
#
# This cannot use the object library and must rebuild everything from source
# since exceptions must be disabled.
##############################################################################
set(IGA_SOURCES_ENCODER_ONLY
  ${IGA_API_Source}
  ${IGA_API_EncoderInterface}
  ${IGA_Backend}
  ${IGA_Backend_Messages}
  ${IGA_Backend_GED_EncoderOnly}
  ${IGA_Frontend_Formatter}
  ${IGA_IR}
  ${IGA_MemManager}
#  ${IGA_Misc}
  ${IGA_Models}
  ${IGA_Timer}
  ${GED_INCLUDE}/ged.h
)

    add_library(IGA_ENC_LIB STATIC $<TARGET_OBJECTS:GEDLibrary> ${IGA_SOURCES_ENCODER_ONLY})

set(IGA_ENC_LIB_DEFINITIONS ${IGA_DEFINITIONS} IGA_BUILDING_LIB)

set_target_properties(IGA_ENC_LIB PROPERTIES
    OUTPUT_NAME                                "iga_enc${TARGET_MODIFIER}"
    COMPILE_DEFINITIONS                        "${IGA_ENC_LIB_DEFINITIONS}"
    COMPILER_FLAGS                             "${IGA_COMPILER_FLAGS}"
    LINK_FLAGS                                 "${IGA_LINK_FLAGS}"
    FOLDER                                     "Libraries/IGAProjs"
  )

if(IGC_BUILD AND MSVC)
    # set up standard defines from the common WDK path.
    bs_set_wdk(IGA_ENC_LIB)
endif()

# IGA_DISABLE_ENCODER_EXCEPTIONS: Disabling exceptions for encoder-only project.
# So it can be used in vISA BE, which is used in IGC. (IGC doesn't permit C++
# exceptions to be used
# Alex: seems like this is the way to do it so it works in various
# linux, android builds.
target_compile_definitions(IGA_ENC_LIB PUBLIC IGA_DISABLE_ENCODER_EXCEPTIONS)

##############################################################################
# iga##.dll
##############################################################################

set (IGA_RES "")

    add_library(IGA_DLL SHARED $<TARGET_OBJECTS:GEDLibrary> $<TARGET_OBJECTS:IGA_OLIB> ${IGA_API} ${IGA_RES})

set(IGA_DLL_DEFINITIONS ${IGA_DEFINITIONS} IGA_BUILDING_DLL)
if (WIN32)
    # MSVC / MinGW / Cygwin / Clang all on windows generate iga64.dll
    set_target_properties(IGA_DLL PROPERTIES PREFIX "")
endif(WIN32)
set(IGA_DLL_LINK_FLAGS ${IGA_LINK_FLAGS})

    # trb: why do we APPEND here instead of replacing these?
    set_property(TARGET IGA_DLL APPEND PROPERTY
        OUTPUT_NAME                                 "iga${TARGET_MODIFIER}"
        )
set_property(TARGET IGA_DLL APPEND PROPERTY
    COMPILE_DEFINITIONS                         ${IGA_DLL_DEFINITIONS}
  )
set_property(TARGET IGA_DLL APPEND PROPERTY
    LINK_FLAGS                                  "${IGA_DLL_LINK_FLAGS}"
  )
set_property(TARGET IGA_DLL APPEND PROPERTY
    FOLDER                                      "Libraries/IGAProjs"
  )

if(IGC_BUILD AND MSVC)
    # set up standard defines from the common WDK path.
    bs_set_wdk(IGA_DLL)
    add_custom_command(TARGET IGA_DLL
                       POST_BUILD
                       COMMAND "${CMAKE_COMMAND}" -E copy $<TARGET_FILE:IGA_DLL> $<TARGET_FILE_DIR:GenX_IR_Exe>
                       COMMAND "${CMAKE_COMMAND}" -E copy $<TARGET_PDB_FILE:IGA_DLL> $<TARGET_FILE_DIR:GenX_IR_Exe>
    )
endif()

# Hidden visibility suppresses PLT entries from being created for GED
# and functions and trims the interface down to a minimal size.
# This was needed when IGA was used by GT-PIN, which also uses GED.
# IGA ended up using GED library linked with GT-PIN rather than the IGA copy.
# see: https://gcc.gnu.org/wiki/Visibility
#
# WARNING: do not move the static libraries below this, this is a
# global setting, and will apply to this and later projects.
set(CMAKE_CXX_VISIBILITY_PRESET hidden)


##############################################################################
# Various Shared Project Properties
##############################################################################


source_group("API"     FILES ${IGA_API_Headers} ${IGA_API_EncoderInterface} ${IGA_API} ${IGA_API_Source})
source_group("Backend" FILES ${IGA_Backend})

if(WIN32)
    source_group("Backend\\GED"      FILES ${IGA_Backend_GED})
    source_group("Backend\\Messages" FILES ${IGA_Backend_Messages})
    source_group("Backend\\Native"   FILES ${IGA_Backend_Native})
else()
    source_group("Backend/GED"       FILES ${IGA_Backend_GED})
    source_group("Backend/Messages"  FILES ${IGA_Backend_Messages})
    source_group("Backend/Native"    FILES ${IGA_Backend_Native})
endif()


source_group("Frontend"    FILES ${IGA_Frontend_Formatter} ${IGA_Frontend_Parser})
source_group("IR"          FILES ${IGA_IR})
source_group("MemManager"  FILES ${IGA_MemManager})
source_group("Models"      FILES ${IGA_Models})
source_group("Misc"        FILES ${IGA_Misc} ${IGA_Timer})

if(ANDROID AND MEDIA_IGA)
    target_link_libraries(IGA_DLL c++_static)
    target_link_libraries(IGA_SLIB c++_static)
    target_link_libraries(IGA_ENC_LIB c++_static)
endif(ANDROID AND MEDIA_IGA)
# target_link_libraries(IGA PRIVATE GEDLibrary)

  if(IGC_BUILD)
    set_target_properties(IGA_DLL PROPERTIES
                          VERSION "${IGC_API_MAJOR_VERSION}.${IGC_API_MINOR_VERSION}.${IGC_API_PATCH_VERSION}+${IGC_BUILD_METADATA}"
                          SOVERSION "${IGC_API_MAJOR_VERSION}")
  endif()

  if(UNIX)
      if (CMAKE_INSTALL_FULL_LIBDIR)
          set(IGA_LIB_PATH ${CMAKE_INSTALL_FULL_LIBDIR})
      else()
          set(IGA_LIB_PATH ${CMAKE_INSTALL_PREFIX}/lib)
      endif()
      INSTALL(TARGETS IGA_DLL LIBRARY DESTINATION ${IGA_LIB_PATH} COMPONENT igc-core NAMELINK_SKIP)
      INSTALL(TARGETS IGA_DLL LIBRARY DESTINATION ${IGA_LIB_PATH} COMPONENT igc-core-devel NAMELINK_ONLY)
      unset(IGA_LIB_PATH)
  elseif(MSVC)
      install(TARGETS IGA_DLL RUNTIME
              DESTINATION Release/bin              CONFIGURATIONS Release)
      install(TARGETS IGA_DLL RUNTIME
              DESTINATION Release-Internal/bin     CONFIGURATIONS ReleaseInternal)
      install(TARGETS IGA_DLL RUNTIME
              DESTINATION Debug/bin                CONFIGURATIONS Debug)

      install(FILES $<TARGET_PDB_FILE:IGA_DLL>
              DESTINATION Release/pdb          CONFIGURATIONS Release)
      install(FILES $<TARGET_PDB_FILE:IGA_DLL>
              DESTINATION Release-Internal/pdb CONFIGURATIONS ReleaseInternal)
      install(FILES $<TARGET_PDB_FILE:IGA_DLL>
              DESTINATION Debug/pdb            CONFIGURATIONS Debug)
  endif()