crc32cer

cmake_minimum_required(VERSION 3.16)

set(CMAKE_BUILD_TYPE "RelWithDebInfo")

project(crc32cer_nif)
set(SOURCES
  c_src/crc32c_nif.c
)

SET(CMAKE_EXPORT_COMPILE_COMMANDS TRUE)
SET(Erlang_EI_INCLUDE_DIRS   ${Erlang_OTP_LIB_DIR}/${Erlang_EI_DIR}/include)
SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/priv/)
# OTP limitation
SET(CMAKE_SHARED_LIBRARY_SUFFIX ".so")

# For cerl picking up the OTP_ROOT
if (DEFINED ENV{Erlang_OTP_ROOT_DIR})
  SET(Erlang_OTP_ROOT_DIR $ENV{Erlang_OTP_ROOT_DIR})
else()
EXECUTE_PROCESS(
        COMMAND         erl -noshell -eval "io:format(\"~s\", [code:root_dir()])" -s erlang halt
        OUTPUT_VARIABLE Erlang_OTP_ROOT_DIR
        )
endif()

add_library(crc32cer_nif SHARED ${SOURCES})
target_include_directories(crc32cer_nif PRIVATE ${Erlang_OTP_ROOT_DIR}/usr/include/)

set(CMAKE_CXX_EXTENSIONS ON)
set_property(GLOBAL  PROPERTY CXX_STANDARD 11)

set(CRC32C_BUILD_TESTS OFF)
set(CRC32C_BUILD_BENCHMARKS OFF)
set(CRC32C_USE_GLOG OFF)
add_subdirectory(external/crc32c)

# Set appropriate include and link directories
include_directories(${CMAKE_BINARY_DIR}/external/crc32c/include)

# Specify the dependency on the external library
add_dependencies(crc32cer_nif crc32c)
set_property(TARGET crc32c PROPERTY IMPORTED_LOCATION ${CMAKE_BINARY_DIR}/external/src/google-crc32c-build/libcrc32c.a)

if (CMAKE_SYSTEM_NAME MATCHES Darwin)
  target_link_libraries(crc32cer_nif PRIVATE crc32c c++ "-Wl,-undefined,dynamic_lookup")
else()
  target_link_libraries(crc32cer_nif crc32c stdc++)
endif()

install(TARGETS crc32cer_nif LIBRARY DESTINATION ${PROJECT_SOURCE_DIR}/priv/)

set_target_properties(crc32cer_nif
    PROPERTIES
        LIBRARY_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/priv/
)

set_target_properties(crc32c
    PROPERTIES
        LIBRARY_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/priv/
)