# Show a note about ccache build
if(ENABLE_CCACHE)
    message("-- Enabling ccache build - done")
    set(CMAKE_C_USE_RESPONSE_FILE_FOR_INCLUDES OFF)
    set(CMAKE_CXX_USE_RESPONSE_FILE_FOR_INCLUDES OFF)
endif()

# PDB style debug info
if(NOT DEFINED SEPARATE_DBG)
    set(SEPARATE_DBG FALSE)
endif()

# Dwarf based builds (no rsym)
if(CMAKE_BUILD_TYPE STREQUAL "Release")
    set(NO_ROSSYM TRUE)
elseif(NOT DEFINED NO_ROSSYM)
    set(NO_ROSSYM FALSE)
endif()

if(NOT DEFINED USE_PSEH3)
    set(USE_PSEH3 1)
endif()

if(USE_PSEH3)
    add_definitions(-D_USE_PSEH3=1)
endif()

if(NOT DEFINED USE_DUMMY_PSEH)
    set(USE_DUMMY_PSEH 0)
endif()

if(USE_DUMMY_PSEH)
    add_definitions(-D_USE_DUMMY_PSEH=1)
endif()

if(STACK_PROTECTOR)
    add_compile_options(-fstack-protector-all)
endif()

# Compiler Core
add_compile_options(-pipe -fms-extensions -fno-strict-aliasing)

# Prevent GCC from searching any of the default directories.
# The case for C++ is handled through the reactos_c++ INTERFACE library
add_compile_options("$<$<NOT:$<COMPILE_LANGUAGE:CXX>>:-nostdinc>")

add_compile_options(-mstackrealign -fno-aggressive-loop-optimizations)

if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
    add_compile_options("$<$<COMPILE_LANGUAGE:C>:-std=gnu99;-Wno-microsoft>")
    set(CMAKE_LINK_DEF_FILE_FLAG "")
    set(CMAKE_STATIC_LIBRARY_SUFFIX ".a")
    set(CMAKE_LINK_LIBRARY_SUFFIX "")
    set(CMAKE_CREATE_WIN32_EXE "")
    set(CMAKE_C_COMPILE_OPTIONS_PIC "")
    set(CMAKE_CXX_COMPILE_OPTIONS_PIC "")
    set(CMAKE_C_COMPILE_OPTIONS_PIE "")
    set(CMAKE_CXX_COMPILE_OPTIONS_PIE "")
    set(CMAKE_ASM_FLAGS_DEBUG "")
    set(CMAKE_C_FLAGS_DEBUG "")
    set(CMAKE_CXX_FLAGS_DEBUG "")
endif()

if(DBG)
    if(NOT CMAKE_C_COMPILER_ID STREQUAL "Clang")
        add_compile_options("$<$<COMPILE_LANGUAGE:C>:-Wold-style-declaration>")
    endif()
endif()

# Debugging
if(NOT CMAKE_BUILD_TYPE STREQUAL "Release")
    if(SEPARATE_DBG)
        add_compile_options(-gdwarf-2 -ggdb)
    else()
        add_compile_options(-gdwarf-2 -gstrict-dwarf)
        if(NOT CMAKE_C_COMPILER_ID STREQUAL Clang)
            add_compile_options(-femit-struct-debug-detailed=none -feliminate-unused-debug-symbols)
        endif()
    endif()
endif()

# Tuning
if(ARCH STREQUAL "i386")
    add_compile_options(-march=${OARCH} -mtune=${TUNE})
else()
    add_compile_options(-march=${OARCH})
endif()

# Warnings, errors
if((NOT CMAKE_BUILD_TYPE STREQUAL "Release") AND (NOT CMAKE_C_COMPILER_ID STREQUAL Clang))
    add_compile_options(-Werror)
endif()

add_compile_options(-Wall -Wpointer-arith)
add_compile_options(-Wno-char-subscripts -Wno-multichar -Wno-unused-value)
add_compile_options(-Wno-unused-const-variable)
add_compile_options(-Wno-unused-local-typedefs)
add_compile_options(-Wno-deprecated)

if(NOT CMAKE_C_COMPILER_ID STREQUAL "Clang")
    add_compile_options(-Wno-maybe-uninitialized)
endif()

if(ARCH STREQUAL "amd64")
    add_compile_options(-Wno-format)
elseif(ARCH STREQUAL "arm")
    add_compile_options(-Wno-attributes)
endif()

# Optimizations
# FIXME: Revisit this to see if we even need these levels
if(CMAKE_BUILD_TYPE STREQUAL "Release")
    add_compile_options(-O2 -DNDEBUG)
else()
    if(OPTIMIZE STREQUAL "1")
        add_compile_options(-Os -ftracer)
    elseif(OPTIMIZE STREQUAL "2")
        add_compile_options(-Os)
    elseif(OPTIMIZE STREQUAL "3")
        add_compile_options(-Og)
    elseif(OPTIMIZE STREQUAL "4")
        add_compile_options(-O1)
    elseif(OPTIMIZE STREQUAL "5")
        add_compile_options(-O2)
    elseif(OPTIMIZE STREQUAL "6")
        add_compile_options(-O3)
    elseif(OPTIMIZE STREQUAL "7")
        add_compile_options(-Ofast)
    endif()
endif()

# Link-time code generation
if(LTCG)
    add_compile_options(-flto -fno-fat-lto-objects)
endif()

if(ARCH STREQUAL "i386")
    add_compile_options(-fno-optimize-sibling-calls -fno-omit-frame-pointer)
    if(NOT CMAKE_C_COMPILER_ID STREQUAL "Clang")
        add_compile_options(-mpreferred-stack-boundary=3 -fno-set-stack-executable)
    endif()
    # FIXME: this doesn't work. CMAKE_BUILD_TYPE is always "Debug"
    if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
        add_compile_options(-momit-leaf-frame-pointer)
    endif()
elseif(ARCH STREQUAL "amd64")
    add_compile_options(-mpreferred-stack-boundary=4)
endif()

# Other
if(ARCH STREQUAL "amd64")
    add_definitions(-U_X86_ -UWIN32)
elseif(ARCH STREQUAL "arm")
    add_definitions(-U_UNICODE -UUNICODE)
    add_definitions(-D__MSVCRT__) # DUBIOUS
endif()

add_definitions(-D_inline=__inline)

# Fix build with GLIBCXX + our c++ headers
add_definitions(-D_GLIBCXX_HAVE_BROKEN_VSWPRINTF)

# Alternative arch name
if(ARCH STREQUAL "amd64")
    set(ARCH2 x86_64)
else()
    set(ARCH2 ${ARCH})
endif()

if(SEPARATE_DBG)
    # PDB style debug puts all dwarf debug info in a separate dbg file
    message(STATUS "Building separate debug symbols")
    file(MAKE_DIRECTORY ${REACTOS_BINARY_DIR}/symbols)
    if(CMAKE_GENERATOR STREQUAL "Ninja")
        # Those variables seems to be set but empty in newer CMake versions
        # and Ninja generator relies on them to generate PDB name, so unset them.
        unset(MSVC_C_ARCHITECTURE_ID)
        unset(MSVC_CXX_ARCHITECTURE_ID)
        set(CMAKE_DEBUG_SYMBOL_SUFFIX "")
        set(SYMBOL_FILE <TARGET_PDB>)
    else()
        set(SYMBOL_FILE <TARGET>)
    endif()
    set(OBJCOPY ${CMAKE_OBJCOPY})
    set(CMAKE_C_LINK_EXECUTABLE
        "<CMAKE_C_COMPILER> <CMAKE_C_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>"
        "${OBJCOPY} --only-keep-debug <TARGET> ${REACTOS_BINARY_DIR}/symbols/${SYMBOL_FILE}"
        "${OBJCOPY} --strip-debug <TARGET>")
    set(CMAKE_CXX_LINK_EXECUTABLE
        "<CMAKE_CXX_COMPILER> <CMAKE_CXX_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>"
        "${OBJCOPY} --only-keep-debug <TARGET> ${REACTOS_BINARY_DIR}/symbols/${SYMBOL_FILE}"
        "${OBJCOPY} --strip-debug <TARGET>")
    set(CMAKE_C_CREATE_SHARED_LIBRARY
        "<CMAKE_C_COMPILER> <CMAKE_SHARED_LIBRARY_C_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>"
        "${OBJCOPY} --only-keep-debug <TARGET> ${REACTOS_BINARY_DIR}/symbols/${SYMBOL_FILE}"
        "${OBJCOPY} --strip-debug <TARGET>")
    set(CMAKE_CXX_CREATE_SHARED_LIBRARY
        "<CMAKE_CXX_COMPILER> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>"
        "${OBJCOPY} --only-keep-debug <TARGET> ${REACTOS_BINARY_DIR}/symbols/${SYMBOL_FILE}"
        "${OBJCOPY} --strip-debug <TARGET>")
    set(CMAKE_RC_CREATE_SHARED_LIBRARY
        "<CMAKE_C_COMPILER> <CMAKE_SHARED_LIBRARY_C_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>"
        "${OBJCOPY} --only-keep-debug <TARGET> ${REACTOS_BINARY_DIR}/symbols/${SYMBOL_FILE}"
        "${OBJCOPY} --strip-debug <TARGET>")
elseif(NO_ROSSYM)
    # Dwarf-based build
    message(STATUS "Generating a dwarf-based build (no rsym)")
    set(CMAKE_C_LINK_EXECUTABLE "<CMAKE_C_COMPILER> ${CMAKE_C_FLAGS} <CMAKE_C_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
    set(CMAKE_CXX_LINK_EXECUTABLE "<CMAKE_CXX_COMPILER> ${CMAKE_CXX_FLAGS} <CMAKE_CXX_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
    set(CMAKE_C_CREATE_SHARED_LIBRARY "<CMAKE_C_COMPILER> ${CMAKE_C_FLAGS} <CMAKE_SHARED_LIBRARY_C_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
    set(CMAKE_CXX_CREATE_SHARED_LIBRARY "<CMAKE_CXX_COMPILER> ${CMAKE_CXX_FLAGS} <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
    set(CMAKE_RC_CREATE_SHARED_LIBRARY "<CMAKE_C_COMPILER> ${CMAKE_C_FLAGS} <CMAKE_SHARED_LIBRARY_C_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
else()
    # Normal rsym build
    get_target_property(RSYM native-rsym IMPORTED_LOCATION)

    set(CMAKE_C_LINK_EXECUTABLE
        "<CMAKE_C_COMPILER> ${CMAKE_C_FLAGS} <CMAKE_C_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>"
        "${RSYM} -s ${REACTOS_SOURCE_DIR} <TARGET> <TARGET>")
    set(CMAKE_CXX_LINK_EXECUTABLE
        "<CMAKE_CXX_COMPILER> ${CMAKE_CXX_FLAGS} <CMAKE_CXX_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>"
        "${RSYM} -s ${REACTOS_SOURCE_DIR} <TARGET> <TARGET>")
    set(CMAKE_C_CREATE_SHARED_LIBRARY
        "<CMAKE_C_COMPILER> ${CMAKE_C_FLAGS} <CMAKE_SHARED_LIBRARY_C_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>"
        "${RSYM} -s ${REACTOS_SOURCE_DIR} <TARGET> <TARGET>")
    set(CMAKE_CXX_CREATE_SHARED_LIBRARY
        "<CMAKE_CXX_COMPILER> ${CMAKE_CXX_FLAGS} <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>"
        "${RSYM} -s ${REACTOS_SOURCE_DIR} <TARGET> <TARGET>")
    set(CMAKE_RC_CREATE_SHARED_LIBRARY
        "<CMAKE_C_COMPILER> ${CMAKE_C_FLAGS} <CMAKE_SHARED_LIBRARY_C_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
endif()

set(CMAKE_C_CREATE_SHARED_MODULE ${CMAKE_C_CREATE_SHARED_LIBRARY})
set(CMAKE_CXX_CREATE_SHARED_MODULE ${CMAKE_CXX_CREATE_SHARED_LIBRARY})
set(CMAKE_RC_CREATE_SHARED_MODULE ${CMAKE_RC_CREATE_SHARED_LIBRARY})

set(CMAKE_EXE_LINKER_FLAGS "-nostdlib -Wl,--enable-auto-image-base,--disable-auto-import,--disable-stdcall-fixup,--gc-sections")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS_INIT} -Wl,--disable-stdcall-fixup")
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS_INIT} -Wl,--disable-stdcall-fixup")

if((CMAKE_C_COMPILER_ID STREQUAL "GNU") AND
   (NOT CMAKE_BUILD_TYPE STREQUAL "Release") AND
   (NOT CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0))
    # FIXME: Set this once Clang toolchain works with it
    set(_compress_debug_sections_flag "-Wa,--compress-debug-sections")
endif()

set(CMAKE_C_COMPILE_OBJECT "${CCACHE} <CMAKE_C_COMPILER> <DEFINES> ${_compress_debug_sections_flag} <INCLUDES> <FLAGS> -o <OBJECT> -c <SOURCE>")
# FIXME: Once the GCC toolchain bugs are fixed, add _compress_debug_sections_flag to CXX too
set(CMAKE_CXX_COMPILE_OBJECT "${CCACHE} <CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -o <OBJECT> -c <SOURCE>")
set(CMAKE_ASM_COMPILE_OBJECT "<CMAKE_ASM_COMPILER> ${_compress_debug_sections_flag} -x assembler-with-cpp -o <OBJECT> -I${REACTOS_SOURCE_DIR}/sdk/include/asm -I${REACTOS_BINARY_DIR}/sdk/include/asm <INCLUDES> <FLAGS> <DEFINES> -D__ASM__ -c <SOURCE>")

set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> -O coff <INCLUDES> <FLAGS> -DRC_INVOKED -D__WIN32__=1 -D__FLAT__=1 ${I18N_DEFS} <DEFINES> <SOURCE> <OBJECT>")
set(CMAKE_DEPFILE_FLAGS_RC "--preprocessor \"${MINGW_TOOLCHAIN_PREFIX}gcc${MINGW_TOOLCHAIN_SUFFIX} -E -xc-header -MMD -MF <DEPFILE> -MT <OBJECT>\" ")

# Optional 3rd parameter: stdcall stack bytes
function(set_entrypoint MODULE ENTRYPOINT)
    if(${ENTRYPOINT} STREQUAL "0")
        add_target_link_flags(${MODULE} "-Wl,-entry,0")
    elseif(ARCH STREQUAL "i386")
        set(_entrysymbol _${ENTRYPOINT})
        if(${ARGC} GREATER 2)
            set(_entrysymbol ${_entrysymbol}@${ARGV2})
        endif()
        add_target_link_flags(${MODULE} "-Wl,-entry,${_entrysymbol}")
    else()
        add_target_link_flags(${MODULE} "-Wl,-entry,${ENTRYPOINT}")
    endif()
endfunction()

function(set_subsystem MODULE SUBSYSTEM)
    add_target_link_flags(${MODULE} "-Wl,--subsystem,${SUBSYSTEM}:5.01")
endfunction()

function(set_image_base MODULE IMAGE_BASE)
    add_target_link_flags(${MODULE} "-Wl,--image-base,${IMAGE_BASE}")
endfunction()

function(set_module_type_toolchain MODULE TYPE)
    if((${TYPE} STREQUAL "kernelmodedriver") OR (${TYPE} STREQUAL "wdmdriver"))
        add_target_link_flags(${MODULE} "-Wl,--exclude-all-symbols,-file-alignment=0x1000,-section-alignment=0x1000")
        if(${TYPE} STREQUAL "wdmdriver")
            add_target_link_flags(${MODULE} "-Wl,--wdmdriver")
        endif()
        #Disabled due to LD bug: ROSBE-154
        #add_linker_script(${MODULE} ${REACTOS_SOURCE_DIR}/sdk/cmake/init-section.lds)
    endif()

    if(STACK_PROTECTOR)
        target_link_libraries(${MODULE} gcc_ssp)
    endif()
endfunction()

function(add_delay_importlibs _module)
    get_target_property(_module_type ${_module} TYPE)
    if(_module_type STREQUAL "STATIC_LIBRARY")
        message(FATAL_ERROR "Cannot add delay imports to a static library")
    endif()
    foreach(_lib ${ARGN})
        get_filename_component(_basename "${_lib}" NAME_WE)
        target_link_libraries(${_module} lib${_basename}_delayed)
    endforeach()
    target_link_libraries(${_module} delayimp)
endfunction()

if(NOT ARCH STREQUAL "i386")
    set(DECO_OPTION "-@")
endif()

function(fixup_load_config _target)
    add_custom_command(TARGET ${_target} POST_BUILD
        COMMAND native-pefixup "$<TARGET_FILE:${_target}>"
        COMMENT "Patching in LOAD_CONFIG"
        DEPENDS native-pefixup)
endfunction()

function(generate_import_lib _libname _dllname _spec_file)
    # Generate the def for the import lib
    add_custom_command(
        OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${_libname}_implib.def
        COMMAND native-spec2def -n=${_dllname} -a=${ARCH2} ${ARGN} --implib -d=${CMAKE_CURRENT_BINARY_DIR}/${_libname}_implib.def ${CMAKE_CURRENT_SOURCE_DIR}/${_spec_file}
        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${_spec_file} native-spec2def)
    set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${_libname}_implib.def PROPERTIES EXTERNAL_OBJECT TRUE)

    # Create normal importlib
    _add_library(${_libname} STATIC EXCLUDE_FROM_ALL ${CMAKE_CURRENT_BINARY_DIR}/${_libname}_implib.def)
    set_target_properties(${_libname} PROPERTIES LINKER_LANGUAGE "IMPLIB" PREFIX "")

    # Create delayed importlib
    _add_library(${_libname}_delayed STATIC EXCLUDE_FROM_ALL ${CMAKE_CURRENT_BINARY_DIR}/${_libname}_implib.def)
    set_target_properties(${_libname}_delayed PROPERTIES LINKER_LANGUAGE "IMPLIB_DELAYED" PREFIX "")
endfunction()

# Cute little hack to produce import libs
set(CMAKE_IMPLIB_CREATE_STATIC_LIBRARY "${CMAKE_DLLTOOL} --def <OBJECTS> --kill-at --output-lib=<TARGET>")
set(CMAKE_IMPLIB_DELAYED_CREATE_STATIC_LIBRARY "${CMAKE_DLLTOOL} --def <OBJECTS> --kill-at --output-delaylib=<TARGET>")
function(spec2def _dllname _spec_file)

    cmake_parse_arguments(__spec2def "ADD_IMPORTLIB;NO_PRIVATE_WARNINGS;WITH_RELAY" "VERSION" "" ${ARGN})

    # Get library basename
    get_filename_component(_file ${_dllname} NAME_WE)

    # Error out on anything else than spec
    if(NOT ${_spec_file} MATCHES ".*\\.spec")
        message(FATAL_ERROR "spec2def only takes spec files as input.")
    endif()

    if(__spec2def_WITH_RELAY)
        set(__with_relay_arg "--with-tracing")
    endif()

    if(__spec2def_VERSION)
        set(__version_arg "--version=0x${__spec2def_VERSION}")
    endif()

    # Generate exports def and C stubs file for the DLL
    add_custom_command(
        OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${_file}.def ${CMAKE_CURRENT_BINARY_DIR}/${_file}_stubs.c
        COMMAND native-spec2def -n=${_dllname} -a=${ARCH2} -d=${CMAKE_CURRENT_BINARY_DIR}/${_file}.def -s=${CMAKE_CURRENT_BINARY_DIR}/${_file}_stubs.c ${__with_relay_arg} ${__version_arg} ${CMAKE_CURRENT_SOURCE_DIR}/${_spec_file}
        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${_spec_file} native-spec2def)

    if(__spec2def_ADD_IMPORTLIB)
        set(_extraflags)
        if(__spec2def_NO_PRIVATE_WARNINGS)
            set(_extraflags --no-private-warnings)
        endif()

        generate_import_lib(lib${_file} ${_dllname} ${_spec_file} ${_extraflags})
    endif()
endfunction()

macro(macro_mc FLAG FILE)
    set(COMMAND_MC ${CMAKE_MC_COMPILER} -u ${FLAG} -b -h ${CMAKE_CURRENT_BINARY_DIR}/ -r ${CMAKE_CURRENT_BINARY_DIR}/ ${FILE})
endmacro()

# PSEH lib, needed with mingw
set(PSEH_LIB "pseh")

function(CreateBootSectorTarget _target_name _asm_file _binary_file _base_address)
    set(_object_file ${_binary_file}.o)

    get_defines(_defines)
    get_includes(_includes)

    add_custom_command(
        OUTPUT ${_object_file}
        COMMAND ${CMAKE_ASM_COMPILER} -x assembler-with-cpp -o ${_object_file} -I${REACTOS_SOURCE_DIR}/sdk/include/asm -I${REACTOS_BINARY_DIR}/sdk/include/asm ${_includes} ${_defines} -D__ASM__ -c ${_asm_file}
        DEPENDS ${_asm_file})

    add_custom_command(
        OUTPUT ${_binary_file}
        COMMAND native-obj2bin ${_object_file} ${_binary_file} ${_base_address}
        # COMMAND objcopy --output-target binary --image-base 0x${_base_address} ${_object_file} ${_binary_file}
        DEPENDS ${_object_file} native-obj2bin)

    set_source_files_properties(${_object_file} ${_binary_file} PROPERTIES GENERATED TRUE)

    add_custom_target(${_target_name} ALL DEPENDS ${_binary_file})
endfunction()

function(allow_warnings __module)
    # We don't allow warnings in trunk, this needs to be reworked. See CORE-6959.
    #target_compile_options(${__module} PRIVATE "-Wno-error")
endfunction()

macro(add_asm_files _target)
    list(APPEND ${_target} ${ARGN})
endmacro()

function(add_linker_script _target _linker_script_file)
    get_filename_component(_file_full_path ${_linker_script_file} ABSOLUTE)
    add_target_link_flags(${_target} "-Wl,-T,${_file_full_path}")
    add_target_property(${_target} LINK_DEPENDS ${_file_full_path})
endfunction()

# Manage our C++ options
# we disable standard includes if we don't use the STL
add_compile_options("$<$<AND:$<COMPILE_LANGUAGE:CXX>,$<NOT:$<IN_LIST:cppstl,$<TARGET_PROPERTY:LINK_LIBRARIES>>>>:-nostdinc>")
# we disable RTTI, unless said so
add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:$<IF:$<BOOL:$<TARGET_PROPERTY:WITH_CXX_RTTI>>,-frtti,-fno-rtti>>")
# We disable exceptions, unless said so
add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:$<IF:$<BOOL:$<TARGET_PROPERTY:WITH_CXX_EXCEPTIONS>>,-fexceptions,-fno-exceptions>>")

# Find default G++ libraries
add_library(libgcc STATIC IMPORTED)
execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=libgcc.a OUTPUT_VARIABLE LIBGCC_LOCATION)
string(STRIP ${LIBGCC_LOCATION} LIBGCC_LOCATION)
set_target_properties(libgcc PROPERTIES IMPORTED_LOCATION ${LIBGCC_LOCATION})
# libgcc needs kernel32 imports, a CRT and msvcrtex
target_link_libraries(libgcc INTERFACE libkernel32 libmsvcrt msvcrtex)

add_library(libsupc++ STATIC IMPORTED GLOBAL)
execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=libsupc++.a OUTPUT_VARIABLE LIBSUPCXX_LOCATION)
string(STRIP ${LIBSUPCXX_LOCATION} LIBSUPCXX_LOCATION)
set_target_properties(libsupc++ PROPERTIES IMPORTED_LOCATION ${LIBSUPCXX_LOCATION})
# libsupc++ requires libgcc
target_link_libraries(libsupc++ INTERFACE libgcc)

add_library(libmingwex STATIC IMPORTED)
execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=libmingwex.a OUTPUT_VARIABLE LIBMINGWEX_LOCATION)
string(STRIP ${LIBMINGWEX_LOCATION} LIBMINGWEX_LOCATION)
set_target_properties(libmingwex PROPERTIES IMPORTED_LOCATION ${LIBMINGWEX_LOCATION})
# libmingwex requires a CRT and imports from kernel32
target_link_libraries(libmingwex INTERFACE libmsvcrt libkernel32)

add_library(libstdc++ STATIC IMPORTED GLOBAL)
execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=libstdc++.a OUTPUT_VARIABLE LIBSTDCCXX_LOCATION)
string(STRIP ${LIBSTDCCXX_LOCATION} LIBSTDCCXX_LOCATION)
set_target_properties(libstdc++ PROPERTIES IMPORTED_LOCATION ${LIBSTDCCXX_LOCATION})
# libstdc++ requires libsupc++ and mingwex provided by GCC
target_link_libraries(libstdc++ INTERFACE libsupc++ libmingwex)
# this is for our SAL annotations
target_compile_definitions(libstdc++ INTERFACE "$<$<COMPILE_LANGUAGE:CXX>:PAL_STDCPP_COMPAT>")

# Create our alias libraries
add_library(cppstl ALIAS libstdc++)
add_library(cpprt ALIAS libsupc++)