wip: add cmake helper module

Lib.cmake

@@ -0,0 +1,106 @@
+cmake_minimum_required(VERSION 3.15)
+
+# setup some cmake required config
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+add_definitions("-DBUILDING_NODE_EXTENSION")
+
+# In some configurations MD builds will crash upon attempting to free memory.
+# This tries to encourage MT builds which are larger but less likely to have this crash.
+set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+
+# Setup some variables
+if(NOT CMAKE_BUILD_TYPE)
+    SET (CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose the type of build." FORCE)
+endif()
+if(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
+    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/${CMAKE_BUILD_TYPE}")
+endif()
+
+# Find versions info
+execute_process(COMMAND "${CMAKE_CURRENT_LIST_DIR}/bin/cmake-js-versions"
+    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+    OUTPUT_VARIABLE CMAKE_JS_VERSIONS
+)
+if (NOT DEFINED CMAKE_JS_VERSIONS OR "${CMAKE_JS_VERSIONS}" STREQUAL "")
+    message(FATAL_ERROR "Failed to find cmake-js and nodejs versions!")
+endif()
+string(REGEX MATCH "CMAKEJS_VERSION ([0-9a-zA-Z\.]+)" _ ${CMAKE_JS_VERSIONS})
+set(CMAKEJS_VERSION ${CMAKE_MATCH_1})
+string(REGEX MATCH "NODE_RUNTIME ([0-9a-zA-Z\.]+)" _ ${CMAKE_JS_VERSIONS})
+set(NODE_RUNTIME ${CMAKE_MATCH_1})
+string(REGEX MATCH "NODE_RUNTIMEVERSION ([0-9a-zA-Z\.]+)" _ ${CMAKE_JS_VERSIONS})
+set(NODE_RUNTIMEVERSION ${CMAKE_MATCH_1})
+string(REGEX MATCH "NODE_ARCH ([0-9a-zA-Z\.]+)" _ ${CMAKE_JS_VERSIONS})
+set(NODE_ARCH ${CMAKE_MATCH_1})
+
+# cmake-js version of CMake `add_library` specifically for node addons
+FUNCTION (cmake_js_add_node_addon PROJECT_NAME)
+	cmake_parse_arguments(
+        PARSED_ARGS # prefix of output variables
+        "OLD_ADDON_API" # list of names of the boolean arguments (only defined ones will be true)
+        "" # list of names of mono-valued arguments
+        "SOURCES" # list of names of multi-valued arguments (output variables are lists)
+        ${ARGN} # arguments of the function to parse, here we take the all original ones
+    )
+
+    # windows delay hook
+    set(CMAKE_JS_SRC "") 
+    if (MSVC)
+        list (append CMAKE_JS_SRC "${CMAKE_CURRENT_LIST_DIR}/cpp/win_delay_load_hook.cc")
+    endif()
+
+	# Setup the library and some default config
+    add_library(${PROJECT_NAME} SHARED ${PARSED_ARGS_SOURCES} ${CMAKE_JS_SRC})
+    set_target_properties(${PROJECT_NAME} PROPERTIES PREFIX "" SUFFIX ".node")
+
+    if (OLD_ADDON_API)
+        # # Try finding nan
+        # execute_process(COMMAND node -p "require('nan').include"
+        #     WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        #     OUTPUT_VARIABLE NODE_NAN_DIR
+        #     OUTPUT_STRIP_TRAILING_WHITESPACE
+        # )
+        # if (DEFINED NODE_ADDON_API_DIR AND NOT "${NODE_NAN_DIR}" STREQUAL "")
+        #     string(REGEX REPLACE "[\"]" "" NODE_NAN_DIR ${NODE_NAN_DIR})
+        #     message("Found nan: ${NODE_NAN_DIR}")
+        #     target_include_directories(${PROJECT_NAME} PRIVATE ${NODE_NAN_DIR})
+        # endif()
+
+        # TODO nan and headers
+    else()
+        # Find node-addon-api
+        execute_process(COMMAND node -p "require('node-api-headers').include_dir"
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+            OUTPUT_VARIABLE NODE_API_HEADERS_DIR
+            OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+        if (DEFINED NODE_API_HEADERS_DIR AND NOT "${NODE_API_HEADERS_DIR}" STREQUAL "")
+            message("Found node-api-headers: ${NODE_API_HEADERS_DIR}")
+            target_include_directories(${PROJECT_NAME} PRIVATE ${NODE_API_HEADERS_DIR})
+        else()
+            message(FATAL_ERROR "Failed to find node-api-headers!")
+        endif()
+
+        # Try finding node-addon-api
+        execute_process(COMMAND node -p "require('node-addon-api').include"
+            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+            OUTPUT_VARIABLE NODE_ADDON_API_DIR
+            OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+        if (DEFINED NODE_ADDON_API_DIR AND NOT "${NODE_ADDON_API_DIR}" STREQUAL "")
+            string(REGEX REPLACE "[\"]" "" NODE_ADDON_API_DIR ${NODE_ADDON_API_DIR})
+            message("Found node-addon-api: ${NODE_ADDON_API_DIR}")
+            target_include_directories(${PROJECT_NAME} PRIVATE ${NODE_ADDON_API_DIR})
+        endif()
+
+        # Generate node.lib if needed
+        set(CMAKE_JS_NODELIB_DEF "") # TODO
+        if(MSVC AND CMAKE_JS_NODELIB_DEF)
+            # Generate node.lib 
+            set(CMAKE_JS_NODELIB_TARGET "${CMAKE_BINARY_DIR}/node.lib")
+            execute_process(COMMAND ${CMAKE_AR} /def:${CMAKE_JS_NODELIB_DEF} /out:${CMAKE_JS_NODELIB_TARGET} ${CMAKE_STATIC_LINKER_FLAGS})
+            target_link_libraries(${PROJECT_NAME} ${CMAKE_JS_NODELIB_TARGET})
+        endif()
+    endif()
+
+ENDFUNCTION ()

bin/cmake-js-versions

@@ -0,0 +1,9 @@
+#!/usr/bin/env node
+'use strict'
+
+const version = require('../package').version
+
+console.log(`CMAKEJS_VERSION ${version}`)
+console.log(`NODE_RUNTIME node`)
+console.log(`NODE_RUNTIMEVERSION ${process.version.slice(1)}`)
+console.log(`NODE_ARCH ${process.arch}`)