CMakeLists.txt

#   ____  _             _       
#  |  _ \| |_   _  __ _(_)_ __  
#  | |_) | | | | |/ _` | | '_ \ 
#  |  __/| | |_| | (_| | | | | |
#  |_|   |_|\__,_|\__, |_|_| |_|
#                 |___/         
# A Template for R_pluginPlugin, a Source Plugin
# Generated by the command: plugin -t source r_plugin
# Hostname: Fram-IV-3.local
# Current working directory: /Users/p4010/Develop/MADS_plugins
# Creation date: 2026-03-02T10:40:40.526+0100
# NOTICE: MADS Version 2.0.0
cmake_minimum_required(VERSION 3.20)
project(r_plugin VERSION 2.3.0 LANGUAGES CXX)
if(CMAKE_BUILD_TYPE STREQUAL "")
  set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose the type of build." FORCE)
endif()
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
  execute_process(
    COMMAND mads -p
    OUTPUT_VARIABLE MADS_PREFIX
    OUTPUT_STRIP_TRAILING_WHITESPACE
    ERROR_QUIET
  )
  if(MADS_PREFIX)
    set(CMAKE_INSTALL_PREFIX "${MADS_PREFIX}" CACHE PATH "Install path prefix, prepended onto install directories." FORCE)
  endif()
endif()
message(STATUS "CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE}")
message(STATUS "CMAKE_INSTALL_PREFIX: ${CMAKE_INSTALL_PREFIX}")
set(PLUGIN_SUFFIX "" CACHE STRING "Suffix for the plugin file, identifying the architecture, e.g. arm64, x86_64, etc.")
if(PLUGIN_SUFFIX STREQUAL "")
  message(WARNING "No PLUGIN_SUFFIX set, using default plugin name. In multi-platform environment with OTA plugins it is advised to set PLUGIN_SUFFIX to the architecture, e.g. arm64, x86_64, etc.")
else()
  message(STATUS "PLUGIN_SUFFIX set to: ${PLUGIN_SUFFIX}")
endif()

# PROJECT SETTINGS #############################################################
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
set(SRC_DIR ${CMAKE_CURRENT_LIST_DIR}/src)

if(UNIX AND NOT APPLE)
  set(LINUX TRUE)
endif()

# DEPENDENCIES #################################################################
include(FetchContent)

set(FETCHCONTENT_EXCLUDE_FROM_INSTALL_ARGS)
if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.28)
  set(FETCHCONTENT_EXCLUDE_FROM_INSTALL_ARGS EXCLUDE_FROM_ALL)
endif()

# pugg is for the plugin system
FetchContent_Declare(pugg 
  GIT_REPOSITORY https://github.com/pbosetti/pugg.git
  GIT_TAG        1.1.0
  GIT_SHALLOW    TRUE
  ${FETCHCONTENT_EXCLUDE_FROM_INSTALL_ARGS}
)

set(BUILD_TESTING OFF CACHE INTERNAL "")
set(JSON_BuildTests OFF CACHE INTERNAL "")
set(JSON_Install OFF CACHE INTERNAL "")
FetchContent_Declare(json
  URL https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz
  DOWNLOAD_EXTRACT_TIMESTAMP TRUE
  ${FETCHCONTENT_EXCLUDE_FROM_INSTALL_ARGS}
)

# EmbedR's configure step expects a concrete include path for nlohmann_json.
# When json is provided via FetchContent, the target often exposes generator
# expressions only, so pass the include directory explicitly up front.
set(EMBEDR_NLOHMANN_JSON_INCLUDE_DIR
  "${CMAKE_CURRENT_BINARY_DIR}/_deps/json-src/include"
  CACHE PATH "nlohmann_json include directory for EmbedR" FORCE
)

set(EMBEDR_BUILD_TESTS ON CACHE INTERNAL "")
FetchContent_Declare(EmbedR
  GIT_REPOSITORY https://github.com/pbosetti/EmbedR.git
  GIT_TAG        v0.1.1
  GIT_SHALLOW TRUE
  ${FETCHCONTENT_EXCLUDE_FROM_INSTALL_ARGS}
)

if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.28)
  FetchContent_MakeAvailable(pugg json EmbedR)
else()
  foreach(_dependency IN ITEMS pugg json EmbedR)
    string(TOLOWER "${_dependency}" _dependency_lower)
    FetchContent_GetProperties(${_dependency})
    if(NOT ${_dependency_lower}_POPULATED)
      FetchContent_Populate(${_dependency})
      add_subdirectory(
        "${${_dependency_lower}_SOURCE_DIR}"
        "${${_dependency_lower}_BINARY_DIR}"
        EXCLUDE_FROM_ALL
      )
    endif()
  endforeach()
endif()

# R 4.6 hides these declarations unless legacy non-API functions are enabled.
# EmbedR v0.1.1 still calls Rf_findVarInFrame directly.
if(TARGET EmbedR)
  target_compile_definitions(EmbedR PRIVATE ENABLE_LEGACY_NONAPI_FUNS)
endif()

FetchContent_Populate(plugin 
  GIT_REPOSITORY https://github.com/pbosetti/mads_plugin.git
  GIT_TAG        v2.3-P7
  GIT_SHALLOW    TRUE
  SUBBUILD_DIR ${CMAKE_CURRENT_BINARY_DIR}/_deps/plugin-subbuild
  SOURCE_DIR ${CMAKE_CURRENT_BINARY_DIR}/_deps/plugin-src
  BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/_deps/plugin-build
)

include_directories(${plugin_SOURCE_DIR}/src)


# MACROS #######################################################################
# Call: add_plugin(name [SRCS src1 src2 ...] [LIBS lib1 lib2 ...])
#       the source file ${SRC_DIR}/plugin/<name>.cpp is implicitly added
macro(add_plugin name)
  # on MacOS only, plugins can be compiled as executables
  set(multiValueArgs LIBS SRCS)
  cmake_parse_arguments(plugin "" "" "${multiValueArgs}" ${ARGN})
  if (APPLE)
    add_executable(${name} ${SRC_DIR}/${name}.cpp ${plugin_SRCS})
    set_target_properties(${name} PROPERTIES ENABLE_EXPORTS TRUE)
    set(${name}_EXEC ${name}.plugin)
  else()
    add_library(${name} SHARED ${SRC_DIR}/${name}.cpp ${plugin_SRCS})
    add_executable(${name}_main ${SRC_DIR}/${name}.cpp ${plugin_SRCS})
    target_link_libraries(${name}_main PRIVATE pugg ${plugin_LIBS})
    if(WIN32)
      set_target_properties(${name}_main PROPERTIES OUTPUT_NAME ${name}_main)
    else()
      set_target_properties(${name}_main PROPERTIES OUTPUT_NAME ${name})
    endif()
    set(${name}_EXEC ${name})
    list(APPEND TARGET_LIST ${name}_main)
  endif()
  target_link_libraries(${name} PRIVATE pugg ${plugin_LIBS})
  set_target_properties(${name} PROPERTIES PREFIX "")
  if (PLUGIN_SUFFIX)
    set_target_properties(${name} PROPERTIES SUFFIX "_${PLUGIN_SUFFIX}.plugin")
    target_compile_definitions(${name} PRIVATE PLUGIN_NAME="${name}_${PLUGIN_SUFFIX}")
  else()
    set_target_properties(${name} PROPERTIES SUFFIX ".plugin")
    target_compile_definitions(${name} PRIVATE PLUGIN_NAME="${name}")
  endif()
  list(APPEND TARGET_LIST ${name})
endmacro()


# BUILD SETTINGS ###############################################################
if (APPLE)
  set(CMAKE_INSTALL_RPATH "@executable_path/../lib")
else()
  set(CMAKE_INSTALL_RPATH "\$ORIGIN/../lib;/usr/local/lib")
endif()
include_directories(${json_SOURCE_DIR}/include)

# These plugins are always build and use for testing
add_plugin(r_source LIBS EmbedR::EmbedR)
add_plugin(r_sink LIBS EmbedR::EmbedR)
add_plugin(r_filter LIBS EmbedR::EmbedR)


# INSTALL ######################################################################
if(APPLE)
  install(TARGETS ${TARGET_LIST}
    LIBRARY DESTINATION lib COMPONENT MadsApps
    RUNTIME DESTINATION lib COMPONENT MadsApps
    ARCHIVE DESTINATION lib COMPONENT MadsApps
  )
else()
  install(TARGETS ${TARGET_LIST}
    LIBRARY DESTINATION lib COMPONENT MadsApps
    RUNTIME DESTINATION bin COMPONENT MadsApps
    ARCHIVE DESTINATION lib COMPONENT MadsApps
  )
endif()


# PACKAGE #######################################################################
string(TOLOWER "${CMAKE_SYSTEM_NAME}" PACKAGE_OS_NAME)
if(APPLE AND CMAKE_OSX_ARCHITECTURES)
  list(LENGTH CMAKE_OSX_ARCHITECTURES PACKAGE_OSX_ARCHITECTURES_COUNT)
  if(PACKAGE_OSX_ARCHITECTURES_COUNT GREATER 1)
    set(PACKAGE_ARCH_NAME "universal")
  else()
    set(PACKAGE_ARCH_NAME "${CMAKE_OSX_ARCHITECTURES}")
  endif()
else()
  set(PACKAGE_ARCH_NAME "${CMAKE_SYSTEM_PROCESSOR}")
endif()
if(PACKAGE_ARCH_NAME STREQUAL "")
  set(PACKAGE_ARCH_NAME "${CMAKE_HOST_SYSTEM_PROCESSOR}")
endif()
if(PACKAGE_ARCH_NAME STREQUAL "")
  set(PACKAGE_ARCH_NAME "unknown")
endif()
string(TOLOWER "${PACKAGE_ARCH_NAME}" PACKAGE_ARCH_NAME)

set(CPACK_GENERATOR "ZIP")
set(CPACK_PACKAGE_NAME "${PROJECT_NAME}")
set(CPACK_PACKAGE_VENDOR "MADS")
set(CPACK_PACKAGE_VERSION "${PROJECT_VERSION}")
set(CPACK_INCLUDE_TOPLEVEL_DIRECTORY ON)
set(CPACK_COMPONENTS_ALL MadsApps)
set(CPACK_PACKAGE_FILE_NAME
  "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}-${PACKAGE_OS_NAME}-${PACKAGE_ARCH_NAME}")
include(CPack)