chimera# Copyright (c) 2012-2017, The CryptoNote developers, The Bytecoin developers
# Copyright (c) 2018-2019, The TurtleCoin Developers
#
# Please see the included LICENSE file for more information.

cmake_minimum_required(VERSION 2.8)

find_program(CCACHE_PROGRAM ccache)
if(CCACHE_PROGRAM)
  message(STATUS "Found ccache package... Activating...")
  set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
endif()

set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: Debug, Release, RelWithDebInfo")
set(CMAKE_CONFIGURATION_TYPES Debug RelWithDebInfo Release CACHE TYPE INTERNAL)
set(ARCH native CACHE STRING "CPU to build for: -march value or default")

project(chimera-crypto)

# Required for finding Threads on ARM
enable_language(C)
enable_language(CXX)

## This section describes our general CMake setup options
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
set(CMAKE_SKIP_INSTALL_RULES OFF FORCE)
set(CMAKE_SKIP_PACKAGE_ALL_DEPENDENCY ON FORCE)
set(CMAKE_SUPPRESS_REGENERATION ON)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake)

# Enable c++11
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

# Set up options
option(BUILD_JS "Compile to native Javascript" OFF)
option(BUILD_WASM "Compile to WASM" OFF)

if(BUILD_JS AND BUILD_WASM)
  message(FATAL_ERROR "You may only specify either BUILD_JS or BUILD_WASM at a single time")
endif()

if(BUILD_JS)
  message(STATUS "Building for native Javascript...")
endif()

if(BUILD_WASM)
  message(STATUS "Building native WASM binary...")
endif()

## This section is for settings found in the slow-hash routine(s) that may benefit some systems (mostly ARM)
set(FORCE_USE_HEAP ON CACHE BOOL "Force the use of heap memory allocation")
set(NO_AES OFF CACHE BOOL "Turn off Hardware AES instructions?")
set(NO_OPTIMIZED_MULTIPLY_ON_ARM OFF CACHE BOOL "Turn off Optimized Multiplication on ARM?")

message(STATUS "Building for target architecture: ${ARCH}")

if(FORCE_USE_HEAP)
  add_definitions(-DFORCE_USE_HEAP)
  message(STATUS "FORCE_USE_HEAP: ENABLED")
else()
  message(STATUS "FORCE_USE_HEAP: DISABLED")
endif()

if(NO_AES)
  add_definitions(-DNO_AES)
  message(STATUS "HW AES: DISABLED")
else()
  message(STATUS "HW AES: ENABLED")
endif()

if(NO_OPTIMIZED_MULTIPLY_ON_ARM)
  add_definitions(-DNO_OPTIMIZED_MULTIPLY_ON_ARM)
  message(STATUS "OPTIMIZED_ARM_MULTIPLICATION: DISABLED")
else()
  message(STATUS "OPTIMIZED_ARM_MULTIPLICATION: ENABLED")
endif()

# We need to set the label and import it into CMake if it exists
set(LABEL "")
if(DEFINED ENV{LABEL})
  set(LABEL $ENV{LABEL})
  message(STATUS "Found LABEL: ${LABEL}")
endif()

## We only build static binaries -- this is left here for our dependencies
set(STATIC ON CACHE BOOL FORCE "Link libraries statically? Forced to ON")
add_definitions(-DSTATICLIB)

if (NOT BUILD_JS AND NOT BUILD_WASM)
  ## Platform specific code base information is applied here
  if(MSVC)
    add_definitions(-DCRYPTO_EXPORTS)
    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 /D_VARIADIC_MAX=8 /D__SSE4_1__")
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:10485760")
    foreach(VAR CMAKE_C_FLAGS_DEBUG CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS_RELWITHDEBINFO CMAKE_CXX_FLAGS_RELWITHDEBINFO CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS_RELEASE)
      string(REPLACE "/MD" "/MT" ${VAR} "${${VAR}}")
    endforeach()
    include_directories(SYSTEM ${CMAKE_CURRENT_SOURCE_DIR}/src/platform/msc)
  elseif(APPLE)
    include_directories(SYSTEM /usr/include/malloc)
    enable_language(ASM)
  endif()

  if(NOT MSVC)
    if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
      # This option has no effect in glibc version less than 2.20.
      # Since glibc 2.20 _BSD_SOURCE is deprecated, this macro is recomended instead
      add_definitions("-D_DEFAULT_SOURCE -D_GNU_SOURCE")
    endif()

    ## This is here to support building for multiple architecture types... but we all know how well that usually goes...
    if("${ARCH}" STREQUAL "default")
      set(ARCH_FLAG "")
    else()
      set(ARCH_FLAG "-march=${ARCH}")
    endif()

    ## These options generate all those nice warnings we see while building
    set(WARNINGS "-Wall -Wextra -Wpointer-arith -Wvla -Wwrite-strings  -Wno-error=extra -Wno-error=unused-function -Wno-error=sign-compare -Wno-error=strict-aliasing -Wno-error=type-limits -Wno-unused-parameter -Wno-error=unused-variable -Wno-error=undef -Wno-error=uninitialized -Wno-error=unused-result")
    if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
      set(WARNINGS "${WARNINGS} -Wno-error=mismatched-tags -Wno-error=null-conversion -Wno-overloaded-shift-op-parentheses -Wno-error=shift-count-overflow -Wno-error=tautological-constant-out-of-range-compare -Wno-error=unused-private-field -Wno-error=unneeded-internal-declaration -Wno-error=unused-function -Wno-error=missing-braces -Wno-error=unused-command-line-argument")
    else()
      set(WARNINGS "${WARNINGS} -Wlogical-op -Wno-error=maybe-uninitialized -Wno-error=clobbered -Wno-error=unused-but-set-variable")
    endif()

    if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
      set(WARNINGS "${WARNINGS} -Wno-error=odr")
    endif()
    set(C_WARNINGS "-Waggregate-return -Wnested-externs -Wold-style-definition -Wstrict-prototypes")
    set(CXX_WARNINGS "-Wno-reorder -Wno-missing-field-initializers")

    if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "aarch64" OR "${LABEL}" STREQUAL "aarch64")
      set(MAES_FLAG "")
    elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "x86_64" AND NOT "${LABEL}" STREQUAL "aarch64")
      set(MAES_FLAG "-maes")
    else()
      set(MAES_FLAG "")
    endif()
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11 ${STATICASSERTC_FLAG} ${WARNINGS} ${C_WARNINGS} ${ARCH_FLAG} ${MAES_FLAG}")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 ${STATICASSERTCPP_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${ARCH_FLAG} ${MAES_FLAG}")

    if(APPLE)
        if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
            # Need to build against libc++ instead of libstc++ on apple
            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostdinc++ -I/usr/local/opt/llvm/include/c++/v1 -nodefaultlibs -lc++ -lc++abi -lm -lc -lgcc -lgcc_eh")

        elseif(CMAKE_C_COMPILER_ID STREQUAL "Clang")
            # Need to link against the llvm libc++ library, default is too old for std::filesystem
            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++ -I/usr/local/opt/llvm/include/c++/v1")
        endif()
    endif()

    if(NOT APPLE)
      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
    endif()

    ## Setting up DEBUG flags
    if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
      set(DEBUG_FLAGS "-g3 -Og -gdwarf-4 -fvar-tracking -fvar-tracking-assignments -fno-inline -fno-omit-frame-pointer")
    else()
      set(DEBUG_FLAGS "-g3 -O0 -fno-omit-frame-pointer")
    endif()

    ## Setting up RELEASE flags
    set(RELEASE_FLAGS "-Ofast -DNDEBUG -Wno-unused-variable")

    if(NOT APPLE)
      # There is a clang bug that does not allow to compile code that uses AES-NI intrinsics if -flto is enabled
      if (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_SYSTEM_NAME STREQUAL "Linux" AND CMAKE_BUILD_TYPE STREQUAL "Release")
        # On linux, to build in lto mode, check that ld.gold linker is used: 'update-alternatives --install /usr/bin/ld ld /usr/bin/ld.gold HIGHEST_PRIORITY'
        set(CMAKE_AR gcc-ar)
        set(CMAKE_RANLIB gcc-ranlib)
      endif()
    endif()

    ## Set up the normal CMake flags as we've built them
    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}")

    ## Statically link our binaries
    if(NOT APPLE)
      set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
    endif()
  endif()
endif()

include_directories(${CMAKE_SOURCE_DIR}/include)

set(BASE_CRYPTO
  src/aesb.c
  src/blake256.c
  src/chacha8.cpp
  src/crypto.cpp
  src/crypto-ops.c
  src/crypto-ops-data.c
  src/groestl.c
  src/hash.c
  src/hash-extra-blake.c
  src/hash-extra-groestl.c
  src/hash-extra-jh.c
  src/hash-extra-skein.c
  src/jh.c
  src/keccak.c
  src/oaes_lib.c
  src/random.cpp
  src/skein.c
  src/slow-hash-arm.c
  src/slow-hash-x86.c
  src/slow-hash-portable.c
  src/StringTools.cpp
  src/tree-hash.c
)

add_subdirectory(external)
include_directories(external/argon2/include)
include_directories(external/cxxopts)

add_library(crypto STATIC ${BASE_CRYPTO})

set(SOURCES
  src/chimera-crypto.cpp
)

add_library(chimera-crypto-static STATIC ${SOURCES})
target_link_libraries(chimera-crypto-static crypto argon2)

if(NOT BUILD_JS AND NOT BUILD_WASM)
  if(WIN32)
    add_library(chimera-crypto-shared SHARED ${SOURCES})
    target_link_libraries(chimera-crypto-shared crypto argon2)
    target_link_libraries(chimera-crypto-static ws2_32)
    target_link_libraries(chimera-crypto-shared ws2_32)
  endif()

  set(CRYPTOTEST_SOURCES
    tests/cryptotest.cpp
  )

  add_executable(cryptotest ${CRYPTOTEST_SOURCES})
  target_link_libraries(cryptotest chimera-crypto-static)
  set_property(TARGET cryptotest PROPERTY OUTPUT_NAME "cryptotest")
else()
  set(JAVSCRIPT_SOURCES
    src/chimera-crypto-js.cpp
  )

  add_executable(chimera-crypto ${JAVSCRIPT_SOURCES})
  target_link_libraries(chimera-crypto chimera-crypto-static)

  # Override our release flags for emscripten compatibility
  set(CMAKE_C_FLAGS_DEBUG "")
  set(CMAKE_CXX_FLAGS_DEBUG "")
  set(CMAKE_C_FLAGS_RELEASE "-O3 --llvm-lto 3 -DNDEBUG -Wno-unused-variable")
  set(CMAKE_CXX_FLAGS_RELEASE "-O3 --llvm-lto 3 -DNDEBUG -Wno-unused-variable")

  set(JS_LINKFLAGS
    --llvm-opts 3
    --llvm-lto 3
    --closure 1
    -s SINGLE_FILE=1
    -s EXPORT_NAME="'ChimeraCrypto'"
    -s POLYFILL_OLD_MATH_FUNCTIONS=1
    -s MODULARIZE=1
    --bind
  )

  string(REPLACE ";" " " JS_LINKFLAGS_STR "${JS_LINKFLAGS}")

  if(BUILD_JS)
    set(CMAKE_EXECUTABLE_SUFFIX ".js")
    set(JS_LINKFLAGS_STR "${JS_LINKFLAGS_STR} -s WASM=0 --js-opts 1")
    message(STATUS "emcc flags: ${JS_LINKFLAGS_STR}")
    set_target_properties(chimera-crypto PROPERTIES LINK_FLAGS "${JS_LINKFLAGS_STR}")
  endif()

  if(BUILD_WASM)
    set(CMAKE_EXECUTABLE_SUFFIX "-wasm.js")
    set(JS_LINKFLAGS_STR "${JS_LINKFLAGS_STR} -s WASM=1 -s BINARYEN_METHOD='native-wasm'")
    message(STATUS "emcc flags: ${JS_LINKFLAGS_STR}")
    set_target_properties(chimera-crypto PROPERTIES LINK_FLAGS "${JS_LINKFLAGS_STR} -s WASM=1 -s BINARYEN_METHOD='native-wasm'")
  endif()
endif()