Support install dependencies from vcpkg

CMakeLists.txt

@@ -33,11 +33,13 @@ if (NOT FBXSDK_FOUND)
   )
 endif()
 
-if(NOT EXISTS "${CMAKE_BINARY_DIR}/conan_paths.cmake")
+if (NOT FBX2GLTF_USE_VCPKG)
+	if(NOT EXISTS "${CMAKE_BINARY_DIR}/conan_paths.cmake")
 	  message(FATAL_ERROR
 		"The Conan package manager must run ('install') first. ${typical_usage_str}")
+	endif()
+	include("${CMAKE_BINARY_DIR}/conan_paths.cmake")
 endif()
-include("${CMAKE_BINARY_DIR}/conan_paths.cmake")
 
 set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 find_package(Threads REQUIRED)
@@ -45,17 +47,29 @@ find_package(Threads REQUIRED)
 list(INSERT CMAKE_MODULE_PATH 0 "${CMAKE_BINARY_DIR}")
 
 # stuff we get from Conan
-find_package(boost_filesystem MODULE REQUIRED)
-find_package(boost_optional MODULE REQUIRED)
-find_package(libxml2 MODULE REQUIRED)
-find_package(zlib MODULE REQUIRED)
-find_package(fmt MODULE REQUIRED)
+if (FBX2GLTF_USE_VCPKG)
+	find_package(Boost REQUIRED COMPONENTS filesystem)
+	# find_package(Boost REQUIRED COMPONENTS optional)
+	find_package(LibXml2 REQUIRED)
+	find_package(ZLIB REQUIRED)
+	find_package(fmt REQUIRED)
+else()
+	find_package(boost_filesystem MODULE REQUIRED)
+	find_package(boost_optional MODULE REQUIRED)
+	find_package(libxml2 MODULE REQUIRED)
+	find_package(zlib MODULE REQUIRED)
+	find_package(fmt MODULE REQUIRED)
+endif()
 
 # create a compilation database for e.g. clang-tidy
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 # DRACO
-ExternalProject_Add(Draco
+if (FBX2GLTF_USE_VCPKG)
+	find_path(DRACO_INCLUDE_DIR draco/compression/encode.h)
+	find_library(DRACO_LIB dracoenc.lib)
+else ()
+	ExternalProject_Add(Draco
 	  GIT_REPOSITORY https://github.com/google/draco
 	  GIT_TAG 1.3.4
 	  PREFIX draco
@@ -63,12 +77,13 @@ ExternalProject_Add(Draco
 	  CMAKE_ARGS
 			-DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
 			-DBUILD_FOR_GLTF=1
-)
-set(DRACO_INCLUDE_DIR "${CMAKE_BINARY_DIR}/draco/include")
-if (WIN32)
+	)
+	set(DRACO_INCLUDE_DIR "${CMAKE_BINARY_DIR}/draco/include")
+	if (WIN32)
 	   set(DRACO_LIB "${CMAKE_BINARY_DIR}/draco/lib/dracoenc.lib")
-else()
+	else()
 	   set(DRACO_LIB "${CMAKE_BINARY_DIR}/draco/lib/libdracoenc.a")
+	endif()
 endif()
 
 # MATHFU
@@ -180,12 +195,21 @@ set_target_properties(libFBX2glTF PROPERTIES OUTPUT_NAME "FBX2glTF")
 add_executable(appFBX2glTF src/FBX2glTF.cpp)
 set_target_properties(appFBX2glTF PROPERTIES OUTPUT_NAME "FBX2glTF")
 
-add_dependencies(libFBX2glTF
+if (FBX2GLTF_USE_VCPKG)
+	add_dependencies(libFBX2glTF
+	  # Draco
+	  MathFu
+	  FiFoMap
+	  CPPCodec
+	)
+else ()
+	add_dependencies(libFBX2glTF
 	  Draco
 	  MathFu
 	  FiFoMap
 	  CPPCodec
-)
+	)
+endif()
 
 if (NOT MSVC)
   # Disable annoying & spammy warning from FBX SDK header file
@@ -199,7 +223,25 @@ if (NOT MSVC)
     )
 endif()
 
-target_link_libraries(libFBX2glTF
+if (FBX2GLTF_USE_VCPKG)
+message(STATUS "xmllib ${LIBXML2_LIBRARIES}")
+  target_link_libraries(libFBX2glTF
+	  ${FRAMEWORKS}
+	  ${Boost_FILESYSTEM_LIBRARY}
+	  # boost_optional::boost_optional
+	  ${DRACO_LIB}
+	  optimized ${FBXSDK_LIBRARY}
+	  debug ${FBXSDK_LIBRARY_DEBUG}
+	  fmt::fmt
+	  # ${LIBXML2_LIBRARIES}
+	  optimized "${FBXSDK_LIBRARY}/../libxml2-md.lib"
+	  debug "${FBXSDK_LIBRARY_DEBUG}/../libxml2-md.lib"
+	  ZLIB::ZLIB
+	  ${CMAKE_DL_LIBS}
+	  ${CMAKE_THREAD_LIBS_INIT}
+	)
+else ()
+	target_link_libraries(libFBX2glTF
 	  ${FRAMEWORKS}
 	  boost_filesystem::boost_filesystem
 	  boost_optional::boost_optional
@@ -211,11 +253,15 @@ target_link_libraries(libFBX2glTF
 	  zlib::zlib
 	  ${CMAKE_DL_LIBS}
 	  ${CMAKE_THREAD_LIBS_INIT}
-)
+	)
+endif ()
 
 if (APPLE)
  find_package(Iconv MODULE REQUIRED)
  target_link_libraries(libFBX2glTF Iconv)
+elseif (MSVC)
+ find_package(unofficial-iconv CONFIG REQUIRED)
+ target_link_libraries(libFBX2glTF unofficial::iconv::libiconv unofficial::iconv::libcharset)
 else()
  find_package(libiconv MODULE REQUIRED)
  target_link_libraries(libFBX2glTF libiconv::libiconv)

README.md

@@ -183,20 +183,42 @@ If all goes well, you will end up with a statically linked executable in `./buil
 
 ### Windows
 
-<TODO> the below is out of date
+#### Install FBX SDK
 
-Windows users may [download](https://cmake.org/download) CMake for Windows,
-install it and [run it](https://cmake.org/runningcmake/) on the FBX2glTF
-checkout (choose a build directory distinct from the source).
+2019.2 version is required.
 
-As part of this process, you will be asked to choose which generator
-to use. **At present, only Visual Studio 2017 or 2019 is supported.** Older
-versions of the IDE are unlikely to successfully build the tool.
+#### Let FBX2glTF know where to find your FBX SDK
 
-Note that the `CMAKE_BUILD_TYPE` variable from the Unix Makefile system is
-entirely ignored here; it is when you open the generated solution that
-you will be choose one of the canonical build types — *Debug*,
-*Release*, *MinSizeRel*, and so on.
+By default, FBX2glTF will look into `<FBX2glTF-root-dir>/sdk/<your-platform>/<FBX-SDK-version>`.
+Usually you didn't install the FBX SDK into that directory.
+So simply create a symbolic link to the real FBX SDK here.
+
+The following scripts is powershell scripts.
+
+First you should create the `sdk` directory if it doesn't exist. cd it after all.
+
+```ps1
+> mkdir sdk
+> cd sdk
+```
+
+Now create the symbolic link. (You possibly need the admin privilege)
+
+```ps1
+> new-item -Path Windows -itemtype SymbolicLink -Value "path-to-fbx-sdk"
+```
+
+the `path-to-fbx-sdk` should be something like "C:\Program Files\Autodesk\FBX\FBX SDK".
+
+#### Install dependencies via [vcpkg](https://github.com/microsoft/vcpkg)
+
+```ps1
+> vcpkg install boost-filesystem:x64-windows boost-optional:x64-windows libxml2:x64-windows zlib:x64-windows fmt:x64-windows
+```
+
+#### Tell FBX2glTF you are going to use vcpkg instead of connan
+
+Add `-DFBX2GLTF_USE_VCPKG=ON` to cmake command line arguments.
 
 ## Conversion Process
 The actual translation begins with the FBX SDK parsing the input file, and ends