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crc32cer

1.1.2
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CRC32-C as nif for Erlang

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crc32cer CMakeLists.txt
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CMakeLists.txt 

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)



include(ExternalProject)

ExternalProject_Add(google-crc32c

         GIT_REPOSITORY "https://github.com/google/crc32c.git"

         GIT_TAG "1.1.2"

         GIT_SHALLOW 1

         GIT_SUBMODULES ""

         PREFIX "${CMAKE_BINARY_DIR}/external"

         SOURCE_DIR "${CMAKE_BINARY_DIR}/external/crc32c"

         CMAKE_ARGS -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCRC32C_INSTALL=ON -DCRC32C_BUILD_TESTS=OFF -DCRC32C_BUILD_BENCHMARKS=OFF -DCRC32C_USE_GLOG=0 -DCMAKE_C_FLAGS=-fPIC -DCMAKE_CXX_FLAGS=-fPIC

         BUILD_COMMAND ${CMAKE_COMMAND} --build .

         PATCH_COMMAND patch -N -p1 < ${PROJECT_SOURCE_DIR}/crc32c_cmake.patch || true

         INSTALL_COMMAND ""

         )



# Set appropriate include and link directories

include_directories(${CMAKE_BINARY_DIR}/external/crc32c/include)

add_library(crc32c SHARED IMPORTED)



# Specify the dependency on the external library

add_dependencies(crc32cer_nif google-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/

)