CMAKE_MINIMUM_REQUIRED(VERSION 3.14.0 FATAL_ERROR)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_C_STANDARD 99)

set(CMAKE_POSITION_INDEPENDENT_CODE ON)

if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE "Release"
    CACHE STRING "Possible values are empty, Debug, Release, RelWithDebInfo, MinSizeRel, ..."
    FORCE
  )
endif()

project(BLS)

set(BUILD_BLS_JS_BINDINGS "1" CACHE STRING "")
set(BUILD_BLS_PYTHON_BINDINGS "1" CACHE STRING "")
set(BUILD_BLS_TESTS "1" CACHE STRING "")
set(BUILD_BLS_BENCHMARKS "1" CACHE STRING "")

message(STATUS "Build python bindings: ${BUILD_BLS_PYTHON_BINDINGS}")
message(STATUS "Build tests: ${BUILD_BLS_TESTS}")
message(STATUS "Build benchmarks: ${BUILD_BLS_BENCHMARKS}")

# Add path for custom modules
set(CMAKE_MODULE_PATH
  ${CMAKE_MODULE_PATH}
  ${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules
)

# Relic related options

set(STBIN "off" CACHE STRING "Relic - Build static binaries")

find_package(gmp)
if (GMP_FOUND)
  message(STATUS "Found libgmp")
  set(ARITH "gmp" CACHE STRING "")
else()
  set(ARITH "easy" CACHE STRING "")
endif()

if(CMAKE_SIZEOF_VOID_P EQUAL 4)
  set(WSIZE "32" CACHE STRING "Relic - Processor word size")
else()
  set(WSIZE "64" CACHE STRING "Relic - Processor word size")
endif()

if(EMSCRIPTEN)
  # emscripten needs arch set to be none since it can't compile assembly
  set(ARCH "" CACHE STRING "")
  # emscripten is a 32 bit compiler
  set(WSIZE "32" CACHE STRING "Relic - Processor word size")
endif()

if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
  set(TIMER "ANSI" CACHE STRING "")
  set(MULTI "OPENMP" CACHE STRING "")
else()
  set(TIMER "CYCLE" CACHE STRING "")
  set(MULTI "PTHREAD" CACHE STRING "")
endif()

set(CHECK "off" CACHE STRING "")
set(VERBS "off" CACHE STRING "")
set(ALLOC "AUTO" CACHE STRING "")
set(SHLIB "off" CACHE STRING "")
set(DOCUM "off" CACHE STRING "")
set(FP_PRIME "381" CACHE STRING "Relic - Prime modulus size")

if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
  set(SEED "UDEV" CACHE STRING "")
  set(FP_QNRES "off" CACHE STRING "")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
  set(SEED "WCGR" CACHE STRING "")
  set(FP_QNRES "on" CACHE STRING "")
else()
  set(SEED "UDEV" CACHE STRING "")
  set(FP_QNRES "on" CACHE STRING "")
endif()

set(FP_METHD "INTEG;INTEG;INTEG;MONTY;LOWER;SLIDE" CACHE STRING "")

if(MSVC)
  set(COMP_FLAGS "" CACHE STRING "")
else()
  set(COMP_FLAGS "-O3 -funroll-loops -fomit-frame-pointer" CACHE STRING "")
endif()

set(FP_PMERS "off" CACHE STRING "")
set(FPX_METHD "INTEG;INTEG;LAZYR" CACHE STRING "")
set(EP_PLAIN "off" CACHE STRING "")
set(EP_SUPER "off" CACHE STRING "")
# Disable relic tests and benchmarks
set(TESTS "0" CACHE STRING "Relic - Number of times each test is ran")
set(BENCH "0" CACHE STRING "Relic - Number of times each benchmark is ran")

set(QUIET "on" CACHE STRING "Relic - Build with printing disabled")

set(PP_EXT "LAZYR" CACHE STRING "")
set(PP_METHD "LAZYR;OATEP" CACHE STRING "")

# Disable mimalloc shared libraries and tests, enable secure mode
set(MI_SECURE       "on" CACHE STRING "")

set(MI_BUILD_SHARED "off" CACHE STRING "")
set(MI_BUILD_TESTS  "off" CACHE STRING "")
set(MI_OVERRIDE     "off" CACHE STRING "")

add_subdirectory(depends/relic)
add_subdirectory(depends/mimalloc)

#message(STATUS "Patching Relic to make setjmp.h inclusion conditional")
#
#execute_process(
#  COMMAND bash -c "git apply ${CMAKE_SOURCE_DIR}/setjmp_patch.diff"
#  WORKING_DIRECTORY ${RELIC_SRC}
#)

add_subdirectory(src)


# Write include paths for rust binding
if(EMSCRIPTEN)
  file(APPEND "${CMAKE_CURRENT_LIST_DIR}/build/include_paths.txt" "${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES}/c++/v1/;")
endif()

file(APPEND "${CMAKE_CURRENT_LIST_DIR}/build/include_paths.txt" "${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES};")

if(GMP_INCLUDES)
  file(APPEND "${CMAKE_CURRENT_LIST_DIR}/build/include_paths.txt" "${GMP_INCLUDES};")
endif()

# Write gmp library path for rust binding
if(GMP_LIBRARIES)
  file(APPEND "${CMAKE_CURRENT_LIST_DIR}/build/gmp_libraries.txt" "${GMP_LIBRARIES}")
endif()

if(EMSCRIPTEN)
  if(BUILD_BLS_JS_BINDINGS)
    add_subdirectory(js-bindings)
  endif()
else()
  # emscripten can't build python bindings, it produces only javascript
  # add_subdirectory(contrib/pybind11)
  if(BUILD_BLS_PYTHON_BINDINGS)
    add_subdirectory(python-bindings)
  endif()
endif()