path: root/CMakeLists.txt

# Copyright (c) 2014-2020, The Monero Project
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are
# permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this list of
#    conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice, this list
#    of conditions and the following disclaimer in the documentation and/or other
#    materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors may be
#    used to endorse or promote products derived from this software without specific
#    prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
# THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

list(INSERT CMAKE_MODULE_PATH 0
  "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
include(CheckLinkerFlag)
include(CheckLibraryExists)
include(CheckFunctionExists)
include(FindPythonInterp)

if (IOS)
    INCLUDE(CmakeLists_IOS.txt)
endif()

cmake_minimum_required(VERSION 3.5)
message(STATUS "CMake version ${CMAKE_VERSION}")

project(monero)

option (USE_CCACHE "Use ccache if a usable instance is found" ON)
if (USE_CCACHE)
	include(FindCcache) # Has to be included after the project() macro, to be able to read the CXX variable.
else()
	message(STATUS "ccache deselected")
endif()
option (USE_COMPILATION_TIME_PROFILER "Use compilation time profiler (for CLang >= 9 only)" OFF)
if (USE_COMPILATION_TIME_PROFILER)
	if (NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
		message(FATAL_ERROR "The flag USE_COMPILATION_TIME_PROFILER is meant to be set only for CLang compiler!")
	endif()
	add_compile_options("-ftime-trace")
endif()

if (${CMAKE_VERSION} VERSION_GREATER "3.0.0" AND CMAKE_MAKE_PROGRAM MATCHES "ninja")
  set(MONERO_PARALLEL_COMPILE_JOBS "" CACHE STRING "The maximum number of concurrent compilation jobs.")
  if (MONERO_PARALLEL_COMPILE_JOBS)
    set_property(GLOBAL APPEND PROPERTY JOB_POOLS compile_job_pool=${MONERO_PARALLEL_COMPILE_JOBS})
    set(CMAKE_JOB_POOL_COMPILE compile_job_pool)
  endif ()

  set(MONERO_PARALLEL_LINK_JOBS "" CACHE STRING "The maximum number of concurrent link jobs.")
  if (MONERO_PARALLEL_LINK_JOBS)
    set_property(GLOBAL APPEND PROPERTY JOB_POOLS link_job_pool=${MONERO_PARALLEL_LINK_JOBS})
    set(CMAKE_JOB_POOL_LINK link_job_pool)
  endif ()
endif ()
  
option (USE_CLANG_TIDY_C   "Lint the code with clang-tidy - variant C"   OFF)
option (USE_CLANG_TIDY_CXX "Lint the code with clang-tidy - variant C++" OFF)
if (USE_CLANG_TIDY_C AND USE_CLANG_TIDY_CXX)
	message(FATAL_ERROR "Enabling both USE_CLANG_TIDY_C and USE_CLANG_TIDY_CXX simultaneously crashes clang-tidy.")
endif()
if (USE_CLANG_TIDY_C OR USE_CLANG_TIDY_CXX)
	include(SetClangTidy)
endif()
if (USE_CLANG_TIDY_C)
	monero_clang_tidy("C")
elseif (USE_CLANG_TIDY_CXX)
	monero_clang_tidy("CXX")
endif()

enable_language(C ASM)

# Require C11/C++11 and disable extensions for all targets
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_C_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

function (die msg)
  if (NOT WIN32)
    string(ASCII 27 Esc)
    set(ColourReset "${Esc}[m")
    set(BoldRed     "${Esc}[1;31m")
  else ()
    set(ColourReset "")
    set(BoldRed     "")
  endif ()

  message(FATAL_ERROR "${BoldRed}${msg}${ColourReset}")
endfunction ()

function (add_c_flag_if_supported flag var)
  # Prepending the flag with -Werror will only add the flag,
  # if it doesn't result in generation of a warning of using a flag unknown to the compiler.
  set(TMP "-Werror ${flag}")
  string(REGEX REPLACE "[- ]" "_" supported ${TMP}_c)
  check_c_compiler_flag(${TMP} ${supported})
  if(${${supported}})
    set(${var} "${${var}} ${flag}" PARENT_SCOPE)
  endif()
endfunction()

function (add_cxx_flag_if_supported flag var)
  set(TMP "-Werror ${flag}")
  string(REGEX REPLACE "[- ]" "_" supported ${TMP}_cxx)
  check_cxx_compiler_flag(${TMP} ${supported})
  if(${${supported}})
    set(${var} "${${var}} ${flag}" PARENT_SCOPE)
  endif()
endfunction()

function (add_linker_flag_if_supported flag var)
  string(REPLACE "-" "_" supported ${flag}_ld)
  string(REPLACE "," "_" supported ${flag}_ld)
  check_linker_flag(${flag} ${supported})
  if(${${supported}})
    set(${var} "${${var}} ${flag}" PARENT_SCOPE)
  endif()
endfunction()

function (add_definition_if_function_found function var)
  string(REPLACE "-" "_" supported ${function}_function)
  check_function_exists(${function} ${supported})
  if(${${supported}})
    add_definitions("-D${var}")
  endif()
endfunction()

function (add_definition_if_library_exists library function header var)
  string(REPLACE "-" "_" supported ${function}_library)
  check_library_exists(${library} ${function} ${header} ${supported})
  if(${${supported}})
    add_definitions("-D${var}")
  endif()
endfunction()

option(RELINK_TARGETS "Relink targets, when just a dependant .so changed, but not its header?" OFF)
function (monero_set_target_no_relink target)
  if (RELINK_TARGETS MATCHES OFF)
    # Will not relink the target, when just its dependant .so has changed, but not it's interface
    set_target_properties("${target}" PROPERTIES LINK_DEPENDS_NO_SHARED true)
  endif()
endfunction()

option(STRIP_TARGETS "Strip symbols from targets?" OFF)
function (monero_set_target_strip target)
  if (STRIP_TARGETS)
    set_target_properties("${target}" PROPERTIES LINK_FLAGS_RELEASE -s)
    set_target_properties("${target}" PROPERTIES LINK_FLAGS_DEBUG -s)
    # Stripping from Debug might make sense if you're low on disk space, but want to test if debug version builds properly.
  endif()
endfunction()

function (monero_add_minimal_executable name)
  source_group("${name}"
    FILES
      ${ARGN})

  add_executable("${name}"
    ${ARGN})
    monero_set_target_no_relink("${name}")
    monero_set_target_strip    ("${name}")
endfunction()

# Finds all headers in a directory and its subdirs, to be able to search for them and autosave in IDEs.
#
# Parameters:
# - headers_found:    Output variable, which will hold the found headers
# - module_root_dir:  The search path for the headers. Typically it will be the module's root dir, so "${CMAKE_CURRENT_SOURCE_DIR}" or a derivative of it.
macro (monero_find_all_headers headers_found module_root_dir)
  file(GLOB ${headers_found}
           "${module_root_dir}/*.h*"    # h* will include hpps as well.
           "${module_root_dir}/**/*.h*" # Any number of subdirs will be included.
           "${module_root_dir}/*.inl"   # .inl is typically template code and is being treated as headers (it's being included).
           "${module_root_dir}/**/*.inl"
)
endmacro()

# Function to forbid undefined symbols and also verify
# 1) Test project with all types of libraries and without undefined symbols can compile successfully
# 2) Test project with all types of libraries and undefined symbols can not compile successfully
function(forbid_undefined_symbols)
  unset(TMP)
  # https://www.unix.com/man-page/linux/1/ld, --no-undefined, Report unresolved symbol references from regular object files.
  add_linker_flag_if_supported(-Wl,--no-undefined TMP)
  # https://www.unix.com/man-page/osx/1/ld/, -undefined, Specifies how undefined symbols are to be treated.
  add_linker_flag_if_supported(-Wl,-undefined,error TMP)
  string(APPEND CMAKE_SHARED_LINKER_FLAGS ${TMP})
  string(APPEND CMAKE_MODULE_LINKER_FLAGS ${TMP})
  set(CMAKE_SHARED_LINKER_FLAGS ${CMAKE_SHARED_LINKER_FLAGS} PARENT_SCOPE)
  set(CMAKE_MODULE_LINKER_FLAGS ${CMAKE_MODULE_LINKER_FLAGS} PARENT_SCOPE)
  set(TEST_PROJECT "${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeTmp/test_project")
  foreach(EXPECT IN ITEMS TRUE FALSE)
    file(REMOVE_RECURSE "${TEST_PROJECT}")
    file(MAKE_DIRECTORY "${TEST_PROJECT}")
    file(WRITE "${TEST_PROJECT}/CMakeLists.txt"
      [=[
cmake_minimum_required(VERSION 3.1)
project(test)
option(EXPECT_SUCCESS "" ON)
file(WRITE "${CMAKE_SOURCE_DIR}/incorrect_source.cpp" "void undefined_symbol(); void symbol() { undefined_symbol(); }")
if (EXPECT_SUCCESS)
  file(APPEND "${CMAKE_SOURCE_DIR}/incorrect_source.cpp" " void undefined_symbol() {}; ")
endif()
add_library(l0 SHARED incorrect_source.cpp)
add_library(l1 MODULE incorrect_source.cpp)
add_library(l2 STATIC incorrect_source.cpp)
add_library(l3 OBJECT incorrect_source.cpp)
]=]
    )
    try_compile(SUCCESS "${TEST_PROJECT}/build" "${TEST_PROJECT}" test
      CMAKE_FLAGS
      "-DCMAKE_SHARED_LINKER_FLAGS=${CMAKE_SHARED_LINKER_FLAGS}"
      "-DCMAKE_MODULE_LINKER_FLAGS=${CMAKE_MODULE_LINKER_FLAGS}"
      "-DEXPECT_SUCCESS=${EXPECT}"
    )
    if (NOT ${SUCCESS} STREQUAL ${EXPECT})
      message(FATAL_ERROR "Undefined symbols test failure: expect(${EXPECT}), success(${SUCCESS})")
    endif()
    file(REMOVE_RECURSE "${TEST_PROJECT}")
  endforeach()
endfunction()
if (NOT (CMAKE_SYSTEM_NAME MATCHES "kOpenBSD.*|OpenBSD.*") AND NOT OSSFUZZ)
  forbid_undefined_symbols()
endif()

if (MINGW)
  function(export_all_symbols)
    unset(TMP)
    add_linker_flag_if_supported(-Wl,--export-all-symbols TMP)
    string(APPEND CMAKE_SHARED_LINKER_FLAGS ${TMP})
    string(APPEND CMAKE_MODULE_LINKER_FLAGS ${TMP})
    set(CMAKE_SHARED_LINKER_FLAGS ${CMAKE_SHARED_LINKER_FLAGS} PARENT_SCOPE)
    set(CMAKE_MODULE_LINKER_FLAGS ${CMAKE_MODULE_LINKER_FLAGS} PARENT_SCOPE)
  endfunction()
  export_all_symbols()
endif()

if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
  message(STATUS "Setting default build type: ${CMAKE_BUILD_TYPE}")
endif()
string(TOLOWER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_LOWER)

# ARCH defines the target architecture, either by an explicit identifier or
# one of the following two keywords. By default, ARCH a value of 'native':
# target arch = host arch, binary is not portable. When ARCH is set to the
# string 'default', no -march arg is passed, which creates a binary that is
# portable across processors in the same family as host processor.  In cases
# when ARCH is not set to an explicit identifier, cmake's builtin is used
# to identify the target architecture, to direct logic in this cmake script.
# Since ARCH is a cached variable, it will not be set on first cmake invocation.
if (NOT ARCH_ID)
if (NOT ARCH OR ARCH STREQUAL "" OR ARCH STREQUAL "native" OR ARCH STREQUAL "default")
  if(CMAKE_SYSTEM_PROCESSOR STREQUAL "")
    set(CMAKE_SYSTEM_PROCESSOR ${CMAKE_HOST_SYSTEM_PROCESSOR})
  endif()
  set(ARCH_ID "${CMAKE_SYSTEM_PROCESSOR}")
else()
  set(ARCH_ID "${ARCH}")
endif()
endif()
string(TOLOWER "${ARCH_ID}" ARM_ID)
string(SUBSTRING "${ARM_ID}" 0 3 ARM_TEST)
if (ARM_TEST STREQUAL "arm")
  set(ARM 1)
  string(SUBSTRING "${ARM_ID}" 0 5 ARM_TEST)
  if (ARM_TEST STREQUAL "armv6")
    set(ARM6 1)
  endif()
  if (ARM_TEST STREQUAL "armv7")
    set(ARM7 1)
  endif()
endif()

if (ARM_ID STREQUAL "aarch64" OR ARM_ID STREQUAL "arm64" OR ARM_ID STREQUAL "armv8-a")
  set(ARM 1)
  set(ARM8 1)
  set(ARCH "armv8-a")
endif()

if(ARCH_ID STREQUAL "ppc64le")
  set(PPC64LE 1)
  set(PPC64   0)
  set(PPC     0)
endif()

if(ARCH_ID STREQUAL "powerpc64" OR ARCH_ID STREQUAL "ppc64")
  set(PPC64LE 0)
  set(PPC64   1)
  set(PPC     0)
endif()

if(ARCH_ID STREQUAL "powerpc" OR ARCH_ID STREQUAL "ppc")
  set(PPC64LE 0)
  set(PPC64   0)
  set(PPC     1)
endif()

if(ARCH_ID STREQUAL "s390x")
  set(S390X 1)
endif()

if(WIN32 OR ARM OR PPC64LE OR PPC64 OR PPC)
  set(OPT_FLAGS_RELEASE "-O2")
else()
  set(OPT_FLAGS_RELEASE "-Ofast")
endif()

# BUILD_TAG is used to select the build type to check for a new version
if(BUILD_TAG)
  message(STATUS "Building build tag ${BUILD_TAG}")
  add_definitions("-DBUILD_TAG=${BUILD_TAG}")
else()
  message(STATUS "Building without build tag")
endif()

if(NOT MANUAL_SUBMODULES)
  find_package(Git)
  if(GIT_FOUND)
    function (check_submodule relative_path)
      execute_process(COMMAND git rev-parse "HEAD" WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/${relative_path} OUTPUT_VARIABLE localHead)
      execute_process(COMMAND git rev-parse "HEAD:${relative_path}" WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} OUTPUT_VARIABLE checkedHead)
      string(COMPARE EQUAL "${localHead}" "${checkedHead}" upToDate)
      if (upToDate)
        message(STATUS "Submodule '${relative_path}' is up-to-date")
      else()
        message(FATAL_ERROR "Submodule '${relative_path}' is not up-to-date. Please update all submodules with\ngit submodule update --init --force\nor run cmake with -DMANUAL_SUBMODULES=1\n")
      endif()
    endfunction ()
    
    message(STATUS "Checking submodules")
    check_submodule(external/miniupnp)
    check_submodule(external/rapidjson)
    check_submodule(external/trezor-common)
    check_submodule(external/randomx)
    check_submodule(external/supercop)
  endif()
endif()

set(CMAKE_C_FLAGS_RELEASE "-DNDEBUG ${OPT_FLAGS_RELEASE}")
set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG ${OPT_FLAGS_RELEASE}")

# set this to 0 if per-block checkpoint needs to be disabled
set(PER_BLOCK_CHECKPOINT 1)

if(PER_BLOCK_CHECKPOINT)
  add_definitions("-DPER_BLOCK_CHECKPOINT")
  set(Blocks "blocks")
else()
  set(Blocks "")
endif()

list(INSERT CMAKE_MODULE_PATH 0
  "${CMAKE_SOURCE_DIR}/cmake")

if (NOT DEFINED ENV{DEVELOPER_LOCAL_TOOLS})
  message(STATUS "Could not find DEVELOPER_LOCAL_TOOLS in env (not required)")
  set(BOOST_IGNORE_SYSTEM_PATHS_DEFAULT OFF)
elseif ("$ENV{DEVELOPER_LOCAL_TOOLS}" EQUAL 1)
  message(STATUS "Found: env DEVELOPER_LOCAL_TOOLS = 1")
  set(BOOST_IGNORE_SYSTEM_PATHS_DEFAULT ON)
else()
  message(STATUS "Found: env DEVELOPER_LOCAL_TOOLS = 0")
  set(BOOST_IGNORE_SYSTEM_PATHS_DEFAULT OFF)
endif()

message(STATUS "BOOST_IGNORE_SYSTEM_PATHS defaults to ${BOOST_IGNORE_SYSTEM_PATHS_DEFAULT}")
option(BOOST_IGNORE_SYSTEM_PATHS "Ignore boost system paths for local boost installation" ${BOOST_IGNORE_SYSTEM_PATHS_DEFAULT})

set_property(GLOBAL PROPERTY USE_FOLDERS ON)
enable_testing()

option(BUILD_DOCUMENTATION "Build the Doxygen documentation." ON)
option(BUILD_TESTS "Build tests." OFF)
if (CMAKE_BUILD_TYPE STREQUAL "Debug")
  set(DEFAULT_BUILD_DEBUG_UTILITIES ON)
else()
  set(DEFAULT_BUILD_DEBUG_UTILITIES OFF)
endif()
option(BUILD_DEBUG_UTILITIES "Build debug utilities." DEFAULT_BUILD_DEBUG_UTILITIES)

if(OSSFUZZ)
  message(STATUS "Using OSS-Fuzz fuzzing system")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DOSSFUZZ")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DOSSFUZZ")
endif()

# Check whether we're on a 32-bit or 64-bit system
if(CMAKE_SIZEOF_VOID_P EQUAL "8")
  set(DEFAULT_BUILD_64 ON)
else()
  set(DEFAULT_BUILD_64 OFF)
endif()
option(BUILD_64 "Build for 64-bit? 'OFF' builds for 32-bit." ${DEFAULT_BUILD_64})

if(BUILD_64)
  set(ARCH_WIDTH "64")
else()
  set(ARCH_WIDTH "32")
endif()
message(STATUS "Building for a ${ARCH_WIDTH}-bit system")

# Check if we're on FreeBSD so we can exclude the local miniupnpc (it should be installed from ports instead)
# CMAKE_SYSTEM_NAME checks are commonly known, but specifically taken from libsdl's CMakeLists
if(CMAKE_SYSTEM_NAME MATCHES "kFreeBSD.*|FreeBSD")
  set(FREEBSD TRUE)
endif()

# Check if we're on DragonFly BSD. See the README.md for build instructions.
if(CMAKE_SYSTEM_NAME MATCHES "DragonFly.*")
  set(DRAGONFLY TRUE)
endif()

# Check if we're on OpenBSD. See the README.md for build instructions.
if(CMAKE_SYSTEM_NAME MATCHES "kOpenBSD.*|OpenBSD.*")
  set(OPENBSD TRUE)
endif()

# TODO: check bsdi, NetBSD, to see if they need the same FreeBSD changes
#
# elseif(CMAKE_SYSTEM_NAME MATCHES "kNetBSD.*|NetBSD.*")
#   set(NETBSD TRUE)
# elseif(CMAKE_SYSTEM_NAME MATCHES ".*BSDI.*")
#   set(BSDI TRUE)

include_directories(external/rapidjson/include external/easylogging++ src contrib/epee/include external external/supercop/include)

if(APPLE)
  include_directories(SYSTEM /usr/include/malloc)
  if(POLICY CMP0042)
    cmake_policy(SET CMP0042 NEW)
  endif()
endif()

if(MSVC OR MINGW)
  set(DEFAULT_STATIC true)
else()
  set(DEFAULT_STATIC false)
endif()
option(STATIC "Link libraries statically" ${DEFAULT_STATIC})

# This is a CMake built-in switch that concerns internal libraries
if (NOT DEFINED BUILD_SHARED_LIBS AND NOT STATIC AND CMAKE_BUILD_TYPE_LOWER STREQUAL "debug")
    set(BUILD_SHARED_LIBS ON)
endif()

if (BUILD_SHARED_LIBS)
  message(STATUS "Building internal libraries with position independent code")
  add_definitions("-DBUILD_SHARED_LIBS")
else()
  message(STATUS "Building internal libraries as static")
endif()
set(PIC_FLAG "-fPIC")

if(MINGW)
  string(REGEX MATCH "^[^/]:/[^/]*" msys2_install_path "${CMAKE_C_COMPILER}")
  message(STATUS "MSYS location: ${msys2_install_path}")
  set(CMAKE_INCLUDE_PATH "${msys2_install_path}/mingw${ARCH_WIDTH}/include")
  # This is necessary because otherwise CMake will make Boost libraries -lfoo
  # rather than a full path. Unfortunately, this makes the shared libraries get
  # linked due to a bug in CMake which misses putting -static flags around the
  # -lfoo arguments.
  set(DEFLIB ${msys2_install_path}/mingw${ARCH_WIDTH}/lib)
  list(REMOVE_ITEM CMAKE_C_IMPLICIT_LINK_DIRECTORIES ${DEFLIB})
  list(REMOVE_ITEM CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES ${DEFLIB})
endif()

if(STATIC)
  if(MSVC)
    set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .dll.a .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
  else()
    set(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
  endif()
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DZMQ_STATIC")
endif()

option(SANITIZE "Use ASAN memory sanitizer" OFF)
if(SANITIZE)
  if (MSVC)
    message(FATAL_ERROR "Cannot sanitize with MSVC")
  else()
    message(STATUS "Using ASAN")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
  endif()
endif()

# Set default blockchain storage location:
# memory was the default in Cryptonote before Monero implemented LMDB, it still works but is unnecessary.
# set(DATABASE memory)
set(DATABASE lmdb)
message(STATUS "Using LMDB as default DB type")
set(BLOCKCHAIN_DB DB_LMDB)
add_definitions("-DDEFAULT_DB_TYPE=\"lmdb\"")
add_definitions("-DBLOCKCHAIN_DB=${BLOCKCHAIN_DB}")

# Can't install hook in static build on OSX, because OSX linker does not support --wrap
# On ARM, having libunwind package (with .so's only) installed breaks static link.
# When possible, avoid stack tracing using libunwind in favor of using easylogging++.
if (APPLE)
  set(DEFAULT_STACK_TRACE OFF)
  set(LIBUNWIND_LIBRARIES "")
elseif (DEPENDS AND NOT LINUX)
  set(DEFAULT_STACK_TRACE OFF)
  set(LIBUNWIND_LIBRARIES "")
elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU" AND NOT MINGW)
  set(DEFAULT_STACK_TRACE ON)
  set(STACK_TRACE_LIB "easylogging++") # for diag output only
  set(LIBUNWIND_LIBRARIES "")
elseif (ARM)
  set(DEFAULT_STACK_TRACE OFF)
  set(LIBUNWIND_LIBRARIES "")
else()
  find_package(Libunwind)
  if(LIBUNWIND_FOUND)
    set(DEFAULT_STACK_TRACE ON)
    set(STACK_TRACE_LIB "libunwind") # for diag output only
  else()
    set(DEFAULT_STACK_TRACE OFF)
    set(LIBUNWIND_LIBRARIES "")
  endif()
endif()

option(STACK_TRACE "Install a hook that dumps stack on exception" ${DEFAULT_STACK_TRACE})

if(STACK_TRACE)
  message(STATUS "Stack trace on exception enabled (using ${STACK_TRACE_LIB})")
else()
  message(STATUS "Stack trace on exception disabled")
endif()

if (UNIX AND NOT APPLE)
  # Note that at the time of this writing the -Wstrict-prototypes flag added below will make this fail
  set(THREADS_PREFER_PTHREAD_FLAG ON)
  find_package(Threads)
  add_c_flag_if_supported(-pthread CMAKE_C_FLAGS)
  add_cxx_flag_if_supported(-pthread CMAKE_CXX_FLAGS)
endif()

# Handle OpenSSL, used for sha256sum on binary updates and light wallet ssl http
if (CMAKE_SYSTEM_NAME MATCHES "(SunOS|Solaris)")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthreads")
endif ()

if (APPLE AND NOT IOS)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=default")
  if (NOT OPENSSL_ROOT_DIR)
      EXECUTE_PROCESS(COMMAND brew --prefix openssl
        OUTPUT_VARIABLE OPENSSL_ROOT_DIR
        OUTPUT_STRIP_TRAILING_WHITESPACE)
    message(STATUS "Using OpenSSL found at ${OPENSSL_ROOT_DIR}")
  endif()
endif()

find_package(OpenSSL REQUIRED)
message(STATUS "Using OpenSSL include dir at ${OPENSSL_INCLUDE_DIR}")
include_directories(${OPENSSL_INCLUDE_DIR})
if(STATIC AND NOT IOS)
  if(UNIX)
    set(OPENSSL_LIBRARIES "${OPENSSL_LIBRARIES};${CMAKE_DL_LIBS};${CMAKE_THREAD_LIBS_INIT}")
  endif()
endif()

if (WIN32)
  list(APPEND OPENSSL_LIBRARIES ws2_32 crypt32)
endif()

find_package(HIDAPI)

add_definition_if_library_exists(c memset_s "string.h" HAVE_MEMSET_S)
add_definition_if_library_exists(c explicit_bzero "strings.h" HAVE_EXPLICIT_BZERO)
add_definition_if_function_found(strptime HAVE_STRPTIME)

add_definitions(-DAUTO_INITIALIZE_EASYLOGGINGPP)

set(MONERO_GENERATED_HEADERS_DIR "${CMAKE_CURRENT_BINARY_DIR}/generated_include")
include_directories(${MONERO_GENERATED_HEADERS_DIR})

# As of OpenBSD 6.8, -march=<anything> breaks the build
function(set_default_arch)
  if (OPENBSD)
    set(ARCH default)
  else()
    set(ARCH native)
  endif()

  set(ARCH ${ARCH} CACHE STRING "CPU to build for: -march value or 'default' to not pass -march at all")
endfunction()

if (NOT (MSVC OR ARCH))
    set_default_arch()
endif()

option(COVERAGE "Enable profiling for test coverage report" OFF)
if(COVERAGE)
    message(STATUS "Building with profiling for test coverage report")
endif()
macro (monero_enable_coverage)
  if(COVERAGE)
    foreach(COV_FLAG -fprofile-arcs -ftest-coverage --coverage)
      set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   ${COV_FLAG}")
      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COV_FLAG}")
    endforeach()
  endif()
endmacro()

function (monero_add_library name)
    monero_add_library_with_deps(NAME "${name}" SOURCES ${ARGN})
endfunction()

function (monero_add_library_with_deps)
  cmake_parse_arguments(MONERO_ADD_LIBRARY "" "NAME" "DEPENDS;SOURCES" ${ARGN})
  source_group("${MONERO_ADD_LIBRARY_NAME}" FILES ${MONERO_ADD_LIBRARY_SOURCES})

  # Define a ("virtual") object library and an actual library that links those
  # objects together. The virtual libraries can be arbitrarily combined to link
  # any subset of objects into one library archive. This is used for releasing
  # libwallet, which combines multiple components.
  set(objlib obj_${MONERO_ADD_LIBRARY_NAME})
  add_library(${objlib} OBJECT ${MONERO_ADD_LIBRARY_SOURCES})
  add_library("${MONERO_ADD_LIBRARY_NAME}" $<TARGET_OBJECTS:${objlib}>)
  monero_set_target_no_relink("${MONERO_ADD_LIBRARY_NAME}")
  monero_set_target_strip    ("${MONERO_ADD_LIBRARY_NAME}")
  if (MONERO_ADD_LIBRARY_DEPENDS)
    add_dependencies(${objlib} ${MONERO_ADD_LIBRARY_DEPENDS})
  endif()
  set_property(TARGET "${MONERO_ADD_LIBRARY_NAME}" PROPERTY FOLDER "libs")
  target_compile_definitions(${objlib}
    PRIVATE $<TARGET_PROPERTY:${MONERO_ADD_LIBRARY_NAME},INTERFACE_COMPILE_DEFINITIONS>)
endfunction ()

# Generate header for embedded translations
# Generate header for embedded translations, use target toolchain if depends, otherwise use the
# lrelease and lupdate binaries from the host
include(ExternalProject)
ExternalProject_Add(generate_translations_header
  SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/translations"
  BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/translations"
  STAMP_DIR ${LRELEASE_PATH}
  CMAKE_ARGS -DLRELEASE_PATH=${LRELEASE_PATH}
  INSTALL_COMMAND ${CMAKE_COMMAND} -E echo "")
include_directories("${CMAKE_CURRENT_BINARY_DIR}/translations")
add_subdirectory(external)

# Final setup for libunbound
include_directories(${UNBOUND_INCLUDE_DIR})

# Final setup for easylogging++
include_directories(${EASYLOGGING_INCLUDE})
link_directories(${EASYLOGGING_LIBRARY_DIRS})

# Final setup for liblmdb
include_directories(${LMDB_INCLUDE})

# Final setup for libunwind
include_directories(${LIBUNWIND_INCLUDE})
link_directories(${LIBUNWIND_LIBRARY_DIRS})

# Final setup for hid
if (HIDAPI_FOUND) 
  message(STATUS "Using HIDAPI include dir at ${HIDAPI_INCLUDE_DIR}")
  add_definitions(-DHAVE_HIDAPI)
  include_directories(${HIDAPI_INCLUDE_DIR})
  link_directories(${LIBHIDAPI_LIBRARY_DIRS})
else (HIDAPI_FOUND)
  message(STATUS "Could not find HIDAPI")
endif()

# Trezor support check
include(CheckTrezor)

if(MSVC)
  add_definitions("/bigobj /MP /W3 /GS- /D_CRT_SECURE_NO_WARNINGS /wd4996 /wd4345 /D_WIN32_WINNT=0x0600 /DWIN32_LEAN_AND_MEAN /DGTEST_HAS_TR1_TUPLE=0 /FIinline_c.h /D__SSE4_1__")
  # set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Dinline=__inline")
  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:10485760")
  if(STATIC)
    foreach(VAR CMAKE_C_FLAGS_DEBUG CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS_RELEASE)
      string(REPLACE "/MD" "/MT" ${VAR} "${${VAR}}")
    endforeach()
  endif()
  include_directories(SYSTEM src/platform/msc)
else()
  include(TestCXXAcceptsFlag)
  message(STATUS "Building on ${CMAKE_SYSTEM_PROCESSOR} for ${ARCH}")
  if(ARCH STREQUAL "default")
    set(ARCH_FLAG "")
  elseif(PPC64LE)
    set(ARCH_FLAG "-mcpu=power8")
  elseif(PPC64)
    set(ARCH_FLAG "-mcpu=970")
  elseif(PPC)
    set(ARCH_FLAG "-mcpu=7400")
  elseif(IOS AND ARCH STREQUAL "arm64")
    message(STATUS "IOS: Changing arch from arm64 to armv8")
    set(ARCH_FLAG "-march=armv8")
  else()
    set(ARCH_FLAG "-march=${ARCH}")
    if(ARCH STREQUAL "native")
      check_c_compiler_flag(-march=native CC_SUPPORTS_MARCH_NATIVE)
      if (NOT CC_SUPPORTS_MARCH_NATIVE)
        check_c_compiler_flag(-mtune=native CC_SUPPORTS_MTUNE_NATIVE)
        if (CC_SUPPORTS_MTUNE_NATIVE)
          set(ARCH_FLAG "-mtune=${ARCH}")
        else()
          set(ARCH_FLAG "")
        endif()
      endif()
    endif()
  endif()

  option(NO_AES "Explicitly disable AES support" ${NO_AES})

  if(NO_AES)
    message(STATUS "AES support explicitly disabled")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNO_AES")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DNO_AES")
  elseif(NOT ARM AND NOT PPC64LE AND NOT PPC64 AND NOT PPC AND NOT S390X)
    message(STATUS "AES support enabled")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -maes")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maes")
  elseif(PPC64LE OR PPC64 OR PPC)
    message(STATUS "AES support not available on POWER")
  elseif(S390X)
    message(STATUS "AES support not available on s390x")
  elseif(ARM6)
    message(STATUS "AES support not available on ARMv6")
  elseif(ARM7)
    message(STATUS "AES support not available on ARMv7")
  elseif(ARM8)
    CHECK_CXX_ACCEPTS_FLAG("-march=${ARCH}+crypto" ARCH_PLUS_CRYPTO)
    if(ARCH_PLUS_CRYPTO)
      message(STATUS "Crypto extensions enabled for ARMv8")
      set(ARCH_FLAG "-march=${ARCH}+crypto")
    else()
      message(STATUS "Crypto extensions unavailable on your ARMv8 device")
    endif()
  else()
    message(STATUS "AES support disabled")
  endif()

  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${ARCH_FLAG}")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${ARCH_FLAG}")

  set(WARNINGS "-Wall -Wextra -Wpointer-arith -Wundef -Wvla -Wwrite-strings -Wno-error=extra -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-error=unused-variable -Wno-error=undef -Wno-error=uninitialized")
  if(CMAKE_C_COMPILER_ID MATCHES "Clang")
    if(ARM)
      set(WARNINGS "${WARNINGS} -Wno-error=inline-asm")
    endif()
  else()
    set(WARNINGS "${WARNINGS} -Wlogical-op -Wno-error=maybe-uninitialized -Wno-error=cpp")
  endif()
  if(MINGW)
    set(WARNINGS "${WARNINGS} -Wno-error=unused-value -Wno-error=unused-but-set-variable")
    set(MINGW_FLAG "${MINGW_FLAG} -DWIN32_LEAN_AND_MEAN")
    set(Boost_THREADAPI win32)
    include_directories(SYSTEM src/platform/mingw)
    # mingw doesn't support LTO (multiple definition errors at link time)
    set(USE_LTO_DEFAULT false)
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--stack,10485760")
    if(NOT BUILD_64)
      add_definitions(-DWINVER=0x0501 -D_WIN32_WINNT=0x0501)
    endif()
  endif()
  set(C_WARNINGS "-Waggregate-return -Wnested-externs -Wold-style-definition -Wstrict-prototypes")
  set(CXX_WARNINGS "-Wno-reorder -Wno-missing-field-initializers")
  try_compile(STATIC_ASSERT_RES "${CMAKE_CURRENT_BINARY_DIR}/static-assert" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-static-assert.c" CMAKE_FLAGS -DCMAKE_C_STANDARD=11)
  if(STATIC_ASSERT_RES)
    set(STATIC_ASSERT_FLAG "")
  else()
    set(STATIC_ASSERT_FLAG "-Dstatic_assert=_Static_assert")
  endif()

  try_compile(STATIC_ASSERT_CPP_RES "${CMAKE_CURRENT_BINARY_DIR}/static-assert" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-static-assert.cpp" CMAKE_FLAGS -DCMAKE_CXX_STANDARD=11)
  if(STATIC_ASSERT_CPP_RES)
    set(STATIC_ASSERT_CPP_FLAG "")
  else()
    set(STATIC_ASSERT_CPP_FLAG "-Dstatic_assert=_Static_assert")
  endif()

  monero_enable_coverage()
  # With GCC 6.1.1 the compiled binary malfunctions due to aliasing. Until that
  # is fixed in the code (Issue #847), force compiler to be conservative.
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-strict-aliasing")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing")

  # if those don't work for your compiler, single it out where appropriate
  if(CMAKE_BUILD_TYPE STREQUAL "Release" AND NOT OPENBSD)
    set(C_SECURITY_FLAGS "${C_SECURITY_FLAGS} -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1")
    set(CXX_SECURITY_FLAGS "${CXX_SECURITY_FLAGS} -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1")
  endif()

  # warnings
  add_c_flag_if_supported(-Wformat C_SECURITY_FLAGS)
  add_cxx_flag_if_supported(-Wformat CXX_SECURITY_FLAGS)
  add_c_flag_if_supported(-Wformat-security C_SECURITY_FLAGS)
  add_cxx_flag_if_supported(-Wformat-security CXX_SECURITY_FLAGS)

  # -fstack-protector
  if (NOT OPENBSD AND NOT (WIN32 AND (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_LESS 9.1)))
    add_c_flag_if_supported(-fstack-protector C_SECURITY_FLAGS)
    add_cxx_flag_if_supported(-fstack-protector CXX_SECURITY_FLAGS)
    add_c_flag_if_supported(-fstack-protector-strong C_SECURITY_FLAGS)
    add_cxx_flag_if_supported(-fstack-protector-strong CXX_SECURITY_FLAGS)
  endif()

  # New in GCC 8.2
  if (NOT OPENBSD AND NOT (WIN32 AND (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_LESS 9.1)))
    add_c_flag_if_supported(-fcf-protection=full C_SECURITY_FLAGS)
    add_cxx_flag_if_supported(-fcf-protection=full CXX_SECURITY_FLAGS)
  endif()
  if (NOT WIN32 AND NOT OPENBSD)
    add_c_flag_if_supported(-fstack-clash-protection C_SECURITY_FLAGS)
    add_cxx_flag_if_supported(-fstack-clash-protection CXX_SECURITY_FLAGS)
  endif()

  # Removed in GCC 9.1 (or before ?), but still accepted, so spams the output
  if (NOT (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 9.1))
    add_c_flag_if_supported(-mmitigate-rop C_SECURITY_FLAGS)
    add_cxx_flag_if_supported(-mmitigate-rop CXX_SECURITY_FLAGS)
  endif()

  # linker
  if (NOT SANITIZE AND NOT OSSFUZZ AND NOT (WIN32 AND (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND (CMAKE_C_COMPILER_VERSION VERSION_LESS 9.1 OR NOT STATIC))))
    # PIE executables randomly crash at startup with ASAN
    # Windows binaries die on startup with PIE when compiled with GCC <9.x
    # Windows dynamically-linked binaries die on startup with PIE regardless of GCC version
    if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
      # Clang does not support -pie flag
      add_linker_flag_if_supported("-Wl,-pie" LD_SECURITY_FLAGS)
    else()
      add_linker_flag_if_supported("-pie" LD_SECURITY_FLAGS)
    endif()
  endif()
  add_linker_flag_if_supported(-Wl,-z,relro LD_SECURITY_FLAGS)
  add_linker_flag_if_supported(-Wl,-z,now LD_SECURITY_FLAGS)
  add_linker_flag_if_supported(-Wl,-z,noexecstack noexecstack_SUPPORTED)
  if (noexecstack_SUPPORTED)
    set(LD_SECURITY_FLAGS "${LD_SECURITY_FLAGS} -Wl,-z,noexecstack")
  endif()
  add_linker_flag_if_supported(-Wl,-z,noexecheap noexecheap_SUPPORTED)
  if (noexecheap_SUPPORTED)
    set(LD_SECURITY_FLAGS "${LD_SECURITY_FLAGS} -Wl,-z,noexecheap")
  endif()

  if(BACKCOMPAT)
      add_linker_flag_if_supported(-Wl,--wrap=__divmoddi4 LD_BACKCOMPAT_FLAGS)
      add_linker_flag_if_supported(-Wl,--wrap=glob LD_BACKCOMPAT_FLAGS)
      message(STATUS "Using Lib C back compat flags: ${LD_BACKCOMPAT_FLAGS}")
  endif()

  # some windows linker bits
  if (WIN32)
    add_linker_flag_if_supported(-Wl,--dynamicbase LD_SECURITY_FLAGS)
    add_linker_flag_if_supported(-Wl,--nxcompat LD_SECURITY_FLAGS)
    add_linker_flag_if_supported(-Wl,--high-entropy-va LD_SECURITY_FLAGS)
  endif()

  # Warnings, that when ignored are so severe, that they can segfault or even UB any application.
  # Treat them as errors.
  add_c_flag_if_supported(  -Werror=switch      C_SECURITY_FLAGS)
  add_cxx_flag_if_supported(-Werror=switch      CXX_SECURITY_FLAGS)
  add_c_flag_if_supported(  -Werror=return-type C_SECURITY_FLAGS)
  add_cxx_flag_if_supported(-Werror=return-type CXX_SECURITY_FLAGS)

  message(STATUS "Using C security hardening flags: ${C_SECURITY_FLAGS}")
  message(STATUS "Using C++ security hardening flags: ${CXX_SECURITY_FLAGS}")
  message(STATUS "Using linker security hardening flags: ${LD_SECURITY_FLAGS}")

  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_FLAG} ${WARNINGS} ${C_WARNINGS} ${PIC_FLAG} ${C_SECURITY_FLAGS}")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_CPP_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${PIC_FLAG} ${CXX_SECURITY_FLAGS}")
  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${LD_SECURITY_FLAGS} ${LD_BACKCOMPAT_FLAGS}")

  # With GCC 6.1.1 the compiled binary malfunctions due to aliasing. Until that
  # is fixed in the code (Issue #847), force compiler to be conservative.
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-strict-aliasing")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing")

  if(ARM)
    message(STATUS "Setting FPU Flags for ARM Processors")

    #NB NEON hardware does not fully implement the IEEE 754 standard for floating-point arithmetic
    #Need custom assembly code to take full advantage of NEON SIMD

    #Cortex-A5/9  -mfpu=neon-fp16
    #Cortex-A7/15 -mfpu=neon-vfpv4
    #Cortex-A8    -mfpu=neon
    #ARMv8  	  -FP and SIMD on by default for all ARM8v-A series, NO -mfpu setting needed

    #For custom -mtune, processor IDs for ARMv8-A series:
    #0xd04 - Cortex-A35
    #0xd07 - Cortex-A57
    #0xd08 - Cortex-A72
    #0xd03 - Cortex-A73

    if(NOT ARM8)
      CHECK_CXX_ACCEPTS_FLAG(-mfpu=vfp3-d16 CXX_ACCEPTS_VFP3_D16)
      CHECK_CXX_ACCEPTS_FLAG(-mfpu=vfp4 CXX_ACCEPTS_VFP4)
      CHECK_CXX_ACCEPTS_FLAG(-mfloat-abi=hard CXX_ACCEPTS_MFLOAT_HARD)
      CHECK_CXX_ACCEPTS_FLAG(-mfloat-abi=softfp CXX_ACCEPTS_MFLOAT_SOFTFP)
    endif()

    if(ARM8)
      CHECK_CXX_ACCEPTS_FLAG(-mfix-cortex-a53-835769 CXX_ACCEPTS_MFIX_CORTEX_A53_835769)
      CHECK_CXX_ACCEPTS_FLAG(-mfix-cortex-a53-843419 CXX_ACCEPTS_MFIX_CORTEX_A53_843419)
    endif()

    if(ARM6)
      message(STATUS "Selecting VFP for ARMv6")
      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=vfp")
      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=vfp")
      if(DEPENDS)
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -marm")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -marm")
      endif()
    endif(ARM6)

    if(ARM7)
      if(CXX_ACCEPTS_VFP3_D16 AND NOT CXX_ACCEPTS_VFP4)
        message(STATUS "Selecting VFP3 for ARMv7")
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=vfp3-d16")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=vfp3-d16")
      endif()

      if(CXX_ACCEPTS_VFP4)
        message(STATUS "Selecting VFP4 for ARMv7")
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=vfp4")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=vfp4")
      endif()

      if(CXX_ACCEPTS_MFLOAT_HARD)
        message(STATUS "Setting Hardware ABI for Floating Point")
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfloat-abi=hard")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfloat-abi=hard")
      endif()

      if(CXX_ACCEPTS_MFLOAT_SOFTFP AND NOT CXX_ACCEPTS_MFLOAT_HARD)
        message(STATUS "Setting Software ABI for Floating Point")
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfloat-abi=softfp")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfloat-abi=softfp")
      endif()
    endif(ARM7)

    if(ARM8)
      if(CXX_ACCEPTS_MFIX_CORTEX_A53_835769)
        message(STATUS "Enabling Cortex-A53 workaround 835769")
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfix-cortex-a53-835769")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfix-cortex-a53-835769")
      endif()

      if(CXX_ACCEPTS_MFIX_CORTEX_A53_843419)
        message(STATUS "Enabling Cortex-A53 workaround 843419")
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfix-cortex-a53-843419")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfix-cortex-a53-843419")
      endif()
    endif(ARM8)

  endif(ARM)

  # random crash on startup when asan is on if pie is enabled
  if(NOT SANITIZE AND ANDROID AND NOT BUILD_GUI_DEPS STREQUAL "ON" OR IOS)
    #From Android 5: "only position independent executables (PIE) are supported" 
    message(STATUS "Enabling PIE executable")
    set(PIC_FLAG "")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIE")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIE")
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_CXX_FLAGS} -fPIE -pie")
  endif()

  if(APPLE)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=default -DGTEST_HAS_TR1_TUPLE=0")
  endif()

  set(DEBUG_FLAGS "-g3")

  # At least some CLANGs default to not enough for monero
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ftemplate-depth=900")

  if(NOT DEFINED USE_LTO_DEFAULT)
    set(USE_LTO_DEFAULT false)
  endif()
  set(USE_LTO ${USE_LTO_DEFAULT} CACHE BOOL "Use Link-Time Optimization (Release mode only)")

  if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
    # There is a clang bug that does not allow to compile code that uses AES-NI intrinsics if -flto is enabled, so explicitly disable
    set(USE_LTO false)
  endif()


  if(USE_LTO)
    set(RELEASE_FLAGS "${RELEASE_FLAGS} -flto")
    if(STATIC)
      set(RELEASE_FLAGS "${RELEASE_FLAGS} -ffat-lto-objects")
    endif()
    # Since gcc 4.9 the LTO format is non-standard (slim), so we need the gcc-specific ar and ranlib binaries
    if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND NOT (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.9.0) AND NOT OPENBSD AND NOT DRAGONFLY)
      # When invoking cmake on distributions on which gcc's binaries are prefixed
      # with an arch-specific triplet, the user must specify -DCHOST=<prefix>
      if (DEFINED CHOST)
        set(CMAKE_AR "${CHOST}-gcc-ar")
        set(CMAKE_RANLIB "${CHOST}-gcc-ranlib")
      else()
        set(CMAKE_AR "gcc-ar")
        set(CMAKE_RANLIB "gcc-ranlib")
      endif()
    endif()
  endif()

  set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${DEBUG_FLAGS}")
  set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${DEBUG_FLAGS}")
  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${RELEASE_FLAGS}")
  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${RELEASE_FLAGS}")

  if(STATIC)
    # STATIC already configures most deps to be linked in statically,
    # here we make more deps static if the platform permits it
    if (MINGW)
      # On Windows, this is as close to fully-static as we get:
      # this leaves only deps on /c/Windows/system32/*.dll
      set(STATIC_FLAGS "-static")
    elseif (NOT (APPLE OR FREEBSD OR OPENBSD OR DRAGONFLY))
      # On Linux, we don't support fully static build, but these can be static
      set(STATIC_FLAGS "-static-libgcc -static-libstdc++")
    endif()
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${STATIC_FLAGS} ")
  endif()
endif()

if (${BOOST_IGNORE_SYSTEM_PATHS} STREQUAL "ON")
  set(Boost_NO_SYSTEM_PATHS TRUE)
endif()

set(OLD_LIB_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
set(Boost_NO_BOOST_CMAKE ON)
if(STATIC)
  if(MINGW)
    set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
  endif()

  set(Boost_USE_STATIC_LIBS ON)
  set(Boost_USE_STATIC_RUNTIME ON)
endif()
find_package(Boost 1.58 QUIET REQUIRED COMPONENTS system filesystem thread date_time chrono regex serialization program_options locale)

set(CMAKE_FIND_LIBRARY_SUFFIXES ${OLD_LIB_SUFFIXES})
if(NOT Boost_FOUND)
  die("Could not find Boost libraries, please make sure you have installed Boost or libboost-all-dev (>=1.58) or the equivalent")
elseif(Boost_FOUND)
  message(STATUS "Found Boost Version: ${Boost_VERSION}")
  if (Boost_VERSION VERSION_LESS 10 AND Boost_VERSION VERSION_LESS 1.62.0 AND NOT (OPENSSL_VERSION VERSION_LESS 1.1))
    set(BOOST_BEFORE_1_62 true)
  endif()
  if (NOT Boost_VERSION VERSION_LESS 10 AND Boost_VERSION VERSION_LESS 106200 AND NOT (OPENSSL_VERSION VERSION_LESS 1.1))
    set(BOOST_BEFORE_1_62 true)
  endif()
  if (BOOST_BEFORE_1_62)
      message(FATAL_ERROR "Boost ${Boost_VERSION} (older than 1.62) is too old to link with OpenSSL ${OPENSSL_VERSION} (1.1 or newer) found at ${OPENSSL_INCLUDE_DIR} and ${OPENSSL_LIBRARIES}. "
                          "Update Boost or install OpenSSL 1.0 and set path to it when running cmake: "
                          "cmake -DOPENSSL_ROOT_DIR='/usr/include/openssl-1.0'")
  endif()
endif()

include_directories(SYSTEM ${Boost_INCLUDE_DIRS})
if(MINGW)
  set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wa,-mbig-obj")
  set(EXTRA_LIBRARIES mswsock;ws2_32;iphlpapi;crypt32;bcrypt)
  if(DEPENDS)
    set(ICU_LIBRARIES icuio icui18n icuuc icudata icutu iconv)
  else()
    set(ICU_LIBRARIES icuio icuin icuuc icudt icutu iconv)
  endif()
elseif(APPLE OR OPENBSD OR ANDROID)
  set(EXTRA_LIBRARIES "")
elseif(FREEBSD)
  set(EXTRA_LIBRARIES execinfo)
elseif(DRAGONFLY)
  find_library(COMPAT compat)
  set(EXTRA_LIBRARIES execinfo ${COMPAT})
elseif(CMAKE_SYSTEM_NAME MATCHES "(SunOS|Solaris)")
  set(EXTRA_LIBRARIES socket nsl resolv)
elseif(NOT MSVC AND NOT DEPENDS)
  find_library(RT rt)
  set(EXTRA_LIBRARIES ${RT})
endif()

list(APPEND EXTRA_LIBRARIES ${CMAKE_DL_LIBS})

if (HIDAPI_FOUND OR LibUSB_COMPILE_TEST_PASSED)
  if (APPLE)
    if(DEPENDS)
      list(APPEND EXTRA_LIBRARIES "-framework Foundation -framework AppKit -framework IOKit")
    else()
      find_library(COREFOUNDATION CoreFoundation)
      find_library(APPKIT AppKit)
      find_library(IOKIT IOKit)
      list(APPEND EXTRA_LIBRARIES ${APPKIT})
      list(APPEND EXTRA_LIBRARIES ${IOKIT})
      list(APPEND EXTRA_LIBRARIES ${COREFOUNDATION})
    endif()
  endif()
  if (WIN32)
    list(APPEND EXTRA_LIBRARIES setupapi)
  endif()
endif()

option(USE_READLINE "Build with GNU readline support." ON)
if(USE_READLINE AND NOT DEPENDS)
  find_package(Readline)
  if(READLINE_FOUND AND GNU_READLINE_FOUND)
    add_definitions(-DHAVE_READLINE)
    include_directories(${Readline_INCLUDE_DIR})
    message(STATUS "Found readline library at: ${Readline_ROOT_DIR}")
    set(EPEE_READLINE epee_readline)
  else()
    message(STATUS "Could not find GNU readline library so building without readline support")
  endif()
elseif(USE_READLINE AND DEPENDS AND NOT MINGW)
  find_path(Readline_INCLUDE_PATH readline/readline.h)
  find_library(Readline_LIBRARY readline)
  find_library(Terminfo_LIBRARY tinfo)
  set(Readline_LIBRARY "${Readline_LIBRARY};${Terminfo_LIBRARY}")
  set(GNU_READLINE_LIBRARY ${Readline_LIBRARY})
  add_definitions(-DHAVE_READLINE)
  set(EPEE_READLINE epee_readline)
endif()

if(ANDROID)
  set(ATOMIC libatomic.a)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-error=user-defined-warnings")
endif()
if(CMAKE_C_COMPILER_ID MATCHES "Clang" AND ARCH_WIDTH EQUAL "32" AND NOT IOS AND NOT FREEBSD)
  find_library(ATOMIC atomic)
  if (ATOMIC_FOUND)
    list(APPEND EXTRA_LIBRARIES ${ATOMIC})
  endif()
endif()

find_path(ZMQ_INCLUDE_PATH zmq.h)
find_library(ZMQ_LIB zmq)
find_library(PGM_LIBRARY pgm)
find_library(NORM_LIBRARY norm)
find_library(GSSAPI_LIBRARY gssapi_krb5)
find_library(PROTOLIB_LIBRARY protolib)
find_library(SODIUM_LIBRARY sodium)

if(NOT ZMQ_INCLUDE_PATH)
  message(FATAL_ERROR "Could not find required header zmq.h")
endif()
if(NOT ZMQ_LIB)
  message(FATAL_ERROR "Could not find required libzmq")
endif()
if(PGM_LIBRARY)
  set(ZMQ_LIB "${ZMQ_LIB};${PGM_LIBRARY}")
endif()
if(NORM_LIBRARY)
  set(ZMQ_LIB "${ZMQ_LIB};${NORM_LIBRARY}")
endif()
if(GSSAPI_LIBRARY)
  set(ZMQ_LIB "${ZMQ_LIB};${GSSAPI_LIBRARY}")
endif()
if(PROTOLIB_LIBRARY)
  set(ZMQ_LIB "${ZMQ_LIB};${PROTOLIB_LIBRARY}")
endif()
if(SODIUM_LIBRARY)
  set(ZMQ_LIB "${ZMQ_LIB};${SODIUM_LIBRARY}")
endif()

include(external/supercop/functions.cmake) # place after setting flags and before src directory inclusion
add_subdirectory(contrib)
add_subdirectory(src)

find_package(PythonInterp)
if(BUILD_TESTS)
  message(STATUS "Building tests")
  add_subdirectory(tests)
else()
  message(STATUS "Not building tests")
endif()

if(BUILD_DEBUG_UTILITIES)
  message(STATUS "Building debug utilities")
else()
  message(STATUS "Not building debug utilities")
endif()

if(BUILD_DOCUMENTATION)
  set(DOC_GRAPHS "YES" CACHE STRING "Create dependency graphs (needs graphviz)")
  set(DOC_FULLGRAPHS "NO" CACHE STRING "Create call/callee graphs (large)")

  find_program(DOT_PATH dot)

  if (DOT_PATH STREQUAL "DOT_PATH-NOTFOUND")
    message("Doxygen: graphviz not found - graphs disabled")
    set(DOC_GRAPHS "NO")
  endif()

  find_package(Doxygen)
  if(DOXYGEN_FOUND)
    configure_file("cmake/Doxyfile.in" "Doxyfile" @ONLY)
    configure_file("cmake/Doxygen.extra.css.in" "Doxygen.extra.css" @ONLY)
    add_custom_target(doc
      ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
      WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
      COMMENT "Generating API documentation with Doxygen.." VERBATIM)
  endif()
endif()

# when ON - will install libwallet_merged into "lib"
option(BUILD_GUI_DEPS "Build GUI dependencies." OFF)

find_package(PythonInterp)
find_program(iwyu_tool_path NAMES iwyu_tool.py iwyu_tool)
if (iwyu_tool_path AND PYTHONINTERP_FOUND)
  add_custom_target(iwyu
    COMMAND "${PYTHON_EXECUTABLE}" "${iwyu_tool_path}" -p "${CMAKE_BINARY_DIR}" -- --no_fwd_decls
    COMMENT "Running include-what-you-use tool"
    VERBATIM
  )
endif()