cmake_minimum_required(VERSION 3.13)
project(feather)

message(STATUS "Initiating compile using CMake ${CMAKE_VERSION}")

set(THREADS_PREFER_PTHREAD_FLAG ON)
set(VERSION_MAJOR "0")
set(VERSION_MINOR "1")
set(VERSION_REVISION "0")
set(VERSION "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_REVISION}")

option(FETCH_DEPS "Download dependencies if they are not found" ON)
option(XMRTO "Include Xmr.To module" ON)
option(XMRIG "Path to XMRig binary to embed inside Feather" OFF)
option(TOR "Path to Tor binary to embed inside Feather" OFF)
option(TOR_VERSION "Optional git hash or tag of embedded Tor version" "tor-0.4.3.5")
option(STATIC "Link libraries statically, requires static Qt")
option(USE_DEVICE_TREZOR "Trezor support compilation" OFF)
option(DONATE_BEG "Prompt donation window every once in a while" ON)
list(INSERT CMAKE_MODULE_PATH 0 "${CMAKE_SOURCE_DIR}/cmake")
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
include(CheckLinkerFlag)
include(FetchContent)
include(FindCcache)
include(CheckIncludeFile)
include(CheckSymbolExists)

if(DEBUG)
    set(CMAKE_VERBOSE_MAKEFILE ON)
endif()

set(MONERO_HEAD "d029a63fb75c581fa060447b41d385c595144774")
set(BUILD_GUI_DEPS ON)
set(ARCH "x86-64")
set(BUILD_64 ON)
set(INSTALL_VENDORED_LIBUNBOUND ${STATIC})
set(USE_SINGLE_BUILDDIR ON)

check_include_file(sys/prctl.h HAVE_SYS_PRCTL_H)
check_symbol_exists(prctl "sys/prctl.h" HAVE_PRCTL)

if(STATIC)
    message(STATUS "Initiating static build, turning on manual submodules")
    set(MANUAL_SUBMODULES 1)

    # monero-project/unbound:monero has a fix for static builds, however, it's not merged in Monero yet, because
    # it breaks their buildbot, since that still uses openssl 1.1.0 and we use openssl 1.1.1g. We need to
    # manually set the unbound submodule the right commit that has the fix.
    # This only works with -DMANUAL_SUBMODULES=1
    message(STATUS "applying unbound static build fix contrib/unbound_static.patch")
    execute_process(COMMAND bash -c "git -C ${CMAKE_SOURCE_DIR}/monero/external/unbound apply ${CMAKE_SOURCE_DIR}/contrib/unbound_static.patch")

    set(Boost_USE_STATIC_LIBS ON)
    set(Boost_USE_STATIC_RUNTIME ON)
    add_definitions(-DMONERO_GUI_STATIC)
endif()

function (add_c_flag_if_supported flag var)
    string(REPLACE "-" "_" supported ${flag}_c)
    check_c_compiler_flag(${flag} ${supported})
    if(${${supported}})
        set(${var} "${${var}} ${flag}" PARENT_SCOPE)
    endif()
endfunction()

function (add_cxx_flag_if_supported flag var)
    string(REPLACE "-" "_" supported ${flag}_cxx)
    check_cxx_compiler_flag(${flag} ${supported})
    if(${${supported}})
        set(${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()

find_package(Git)
if(GIT_FOUND)
    execute_process(COMMAND git rev-parse "HEAD" WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/monero OUTPUT_VARIABLE _MONERO_HEAD OUTPUT_STRIP_TRAILING_WHITESPACE)
    if(NOT _MONERO_HEAD STREQUAL MONERO_HEAD)
        message(FATAL_ERROR "[submodule] Monero HEAD was at ${_MONERO_HEAD} but should be at ${MONERO_HEAD}")
    else()
        message(STATUS "[submodule] Monero HEAD @ ${MONERO_HEAD}")
    endif()
endif()

add_subdirectory(monero)
set_property(TARGET wallet_merged PROPERTY FOLDER "monero")
get_directory_property(ARCH_WIDTH DIRECTORY "monero" DEFINITION ARCH_WIDTH)
get_directory_property(UNBOUND_LIBRARY DIRECTORY "monero" DEFINITION UNBOUND_LIBRARY)

include(CMakePackageConfigHelpers)
include(VersionMonero)
include(VersionFeather)

include_directories(${EASYLOGGING_INCLUDE})
link_directories(${EASYLOGGING_LIBRARY_DIRS})

# OpenSSL
if(APPLE AND NOT OPENSSL_ROOT_DIR)
    execute_process(COMMAND brew --prefix openssl OUTPUT_VARIABLE OPENSSL_ROOT_DIR OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
find_package(OpenSSL REQUIRED)
message(STATUS "OpenSSL: Version ${OPENSSL_VERSION}")
message(STATUS "OpenSSL: include dir at ${OPENSSL_INCLUDE_DIR}")
message(STATUS "OpenSSL: libraries at ${OPENSSL_LIBRARIES} ${OPENSSL_SSL_LIBRARIES}")

# Sodium
find_library(SODIUM_LIBRARY sodium)
message(STATUS "libsodium: libraries at ${SODIUM_LIBRARY}")

# HIDApi
set(HIDAPI_FOUND OFF)

# QrEncode
find_package(QREncode REQUIRED)

# Tevador 14 word Monero seed
find_package(monero-seed CONFIG)
if(NOT monero-seed_FOUND)
  if(FETCH_DEPS)
    FetchContent_Declare(monero-seed
      GIT_REPOSITORY https://git.wownero.com/feather/monero-seed.git)
    FetchContent_GetProperties(monero-seed)
    if(NOT monero-seed_POPULATED)
      message(STATUS "Fetching monero-seed")
      FetchContent_Populate(monero-seed)
      add_subdirectory(${monero-seed_SOURCE_DIR} ${monero-seed_BINARY_DIR})
    endif()
    add_library(monero-seed::monero-seed ALIAS monero-seed)
  else()
    message(FATAL_ERROR "monero-seed was not installed and fetching deps is disabled")
  endif()
endif()

# Boost
if(DEBUG)
    set(Boost_DEBUG ON)
endif()
if(APPLE AND NOT BOOST_ROOT)
    execute_process(COMMAND brew --prefix boost OUTPUT_VARIABLE BOOST_ROOT OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
find_package(Boost 1.58 REQUIRED COMPONENTS
        system
        filesystem
        thread
        date_time
        chrono
        regex
        serialization
        program_options
        locale)

if(UNIX AND NOT APPLE)
    if (NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
        # https://github.com/monero-project/monero-gui/issues/3142#issuecomment-705940446
        set(CMAKE_SKIP_RPATH ON)
    endif()

    find_package(X11 REQUIRED)
    message(STATUS "X11_FOUND = ${X11_FOUND}")
    message(STATUS "X11_INCLUDE_DIR = ${X11_INCLUDE_DIR}")
    message(STATUS "X11_LIBRARIES = ${X11_LIBRARIES}")
    include_directories(${X11_INCLUDE_DIR})
    link_directories(${X11_LIBRARIES})
    if(STATIC)
        find_library(XCB_LIBRARY xcb)
        message(STATUS "Found xcb library: ${XCB_LIBRARY}")
    endif()
endif()

if("$ENV{DRONE}" STREQUAL "true")
    message(STATUS "We are inside a static compile with Drone CI")
endif()

# To build Feather with embedded (and static) Tor, pass CMake -DTOR=/path/to/tor
if(TOR)
    if(APPLE)
        execute_process(COMMAND bash -c "touch ${CMAKE_CURRENT_SOURCE_DIR}/src/tor/libevent-2.1.7.dylib")
    endif()

    # on the buildbot Tor is baked into the image
    # - linux: See `Dockerfile`
    # - windows: https://github.com/mxe/mxe/blob/1024dc7d2db5eb7d5d3c64a2c12b5f592572f1ce/plugins/apps/tor.mk
    # - macos: taken from Tor Browser official release
    set(TOR_COPY_CMD "cp ${TOR} ${CMAKE_CURRENT_SOURCE_DIR}/src/assets/exec/tor")
    message(STATUS "${TOR_COPY_CMD}")
    execute_process(COMMAND bash -c "${TOR_COPY_CMD}" RESULT_VARIABLE ret)
    if(ret EQUAL "1")
        message(FATAL_ERROR "Tor copy failure: ${TOR_COPY_CMD}")
    endif()

    message(STATUS "Embedding Tor binary at ${TOR}")
else()
    message(STATUS "Skipping Tor inclusion because -DTOR=Off")
endif()

# To build Feather with embedded (and static) XMRig, pass CMake -DXMRIG=/path/to/xmrig
if(XMRIG)
    # on the buildbot XMRig is baked into the image
    # - linux: See `Dockerfile`
    # - windows: See `Dockerfile_windows`
    # - macos: manually downloaded an official release
    set(XMRIG_COPY_CMD "cp ${XMRIG} ${CMAKE_CURRENT_SOURCE_DIR}/src/assets/exec/xmrig")
    message(STATUS "${XMRIG_COPY_CMD}")
    execute_process(COMMAND bash -c "${XMRIG_COPY_CMD}" RESULT_VARIABLE ret)
    if(ret EQUAL "1")
        message(FATAL_ERROR "XMRig copy failure: ${XMRIG_COPY_CMD}")
    endif()

    message(STATUS "Embedding XMRig binary at ${XMRIG}")
else()
    message(STATUS "Skipping XMRig inclusion because -DXMRIG=Off")
endif()

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()

message(STATUS "Using Boost include dir at ${Boost_INCLUDE_DIRS}")
message(STATUS "Using Boost libraries at ${Boost_LIBRARIES}")

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)
    set(EXTRA_LIBRARIES "-framework AppKit")
elseif(OPENBSD)
    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(APPLE)
    include_directories(SYSTEM /usr/include/malloc)
    if(POLICY CMP0042)
        cmake_policy(SET CMP0042 NEW)
    endif()
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=x86-64 -fvisibility=default -std=c++11")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=default -DGTEST_HAS_TR1_TUPLE=0")
endif()

if (APPLE AND NOT IOS)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=x86-64 -fvisibility=default -std=c++11")
endif()

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

# warnings
# @TODO: enable these 2 for migration to Qt 6
#add_c_flag_if_supported(-Werror C_SECURITY_FLAGS)
#add_cxx_flag_if_supported(-Werror CXX_SECURITY_FLAGS)
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 (APPLE)
    add_linker_flag_if_supported(-Wl,-bind_at_load LD_SECURITY_FLAGS)
    add_linker_flag_if_supported(-Wl,-dead_strip LD_SECURITY_FLAGS)
    add_linker_flag_if_supported(-Wl,-dead_strip_dylibs LD_SECURITY_FLAGS)
endif()
if (NOT APPLE AND NOT (WIN32 AND CMAKE_C_COMPILER_ID STREQUAL "GNU"))
    # Windows binaries die on startup with PIE when compiled with GCC
    add_linker_flag_if_supported(-pie LD_SECURITY_FLAGS)
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()

# 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()

if(STATIC)
    add_linker_flag_if_supported(-static-libgcc STATIC_FLAGS)
    add_linker_flag_if_supported(-static-libstdc++ STATIC_FLAGS)
    if(MINGW)
        add_linker_flag_if_supported(-static STATIC_FLAGS)
    endif()
endif()

# 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.
add_c_flag_if_supported(-fno-strict-aliasing C_SECURITY_FLAGS)
add_cxx_flag_if_supported(-fno-strict-aliasing CXX_SECURITY_FLAGS)

add_c_flag_if_supported(-fPIC C_SECURITY_FLAGS)
add_cxx_flag_if_supported(-fPIC 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} -std=c11 ${C_SECURITY_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 ${CXX_SECURITY_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${LD_SECURITY_FLAGS} ${STATIC_FLAGS}")

if(APPLE)
    add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/contrib/KDMacTouchBar")
endif()

add_subdirectory(src)