Merge pull request #2488 from rbsheth/rbsheth_hunterize_assimp

Use Hunter for pulling in dependencies

CMakeLists.txt

@@ -34,9 +34,24 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #----------------------------------------------------------------------
-SET(CMAKE_LEGACY_CYGWIN_WIN32 0) # Remove when CMake >= 2.8.4 is required
+SET(CMAKE_POLICY_DEFAULT_CMP0074 NEW)
-CMAKE_MINIMUM_REQUIRED( VERSION 2.8 )
+
-PROJECT( Assimp )
+CMAKE_MINIMUM_REQUIRED( VERSION 3.0 )
+
+# Toggles the use of the hunter package manager
+option(HUNTER_ENABLED "Enable Hunter package manager support" OFF)
+
+include("cmake/HunterGate.cmake")
+HunterGate(
+    URL "https://github.com/ruslo/hunter/archive/v0.23.176.tar.gz"
+    SHA1 "2e9ae973d028660b735ac4c6142725ca36a0048a"
+)
+
+IF(HUNTER_ENABLED)
+  add_definitions(-DASSIMP_USE_HUNTER)
+ENDIF(HUNTER_ENABLED)
+
+PROJECT( Assimp VERSION 5.0.0 )
 
 # All supported options ###############################################
 
@@ -115,12 +130,12 @@ OPTION ( IGNORE_GIT_HASH
    OFF
 )
 
-IF (IOS)
+IF (IOS AND NOT HUNTER_ENABLED)
   IF (NOT CMAKE_BUILD_TYPE)
     SET(CMAKE_BUILD_TYPE "Release")
   ENDIF (NOT CMAKE_BUILD_TYPE)
   ADD_DEFINITIONS(-DENABLE_BITCODE)
-ENDIF (IOS)
+ENDIF (IOS AND NOT HUNTER_ENABLED)
 
 # Use subset of Windows.h
 if (WIN32)
@@ -151,17 +166,18 @@ ELSE()
 ENDIF(NOT BUILD_SHARED_LIBS)
 
 # Define here the needed parameters
-SET (ASSIMP_VERSION_MAJOR 5)
+SET (ASSIMP_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
-SET (ASSIMP_VERSION_MINOR 0)
+SET (ASSIMP_VERSION_MINOR ${PROJECT_VERSION_MINOR})
-SET (ASSIMP_VERSION_PATCH 0)
+SET (ASSIMP_VERSION_PATCH ${PROJECT_VERSION_PATCH})
 SET (ASSIMP_VERSION ${ASSIMP_VERSION_MAJOR}.${ASSIMP_VERSION_MINOR}.${ASSIMP_VERSION_PATCH})
-SET (ASSIMP_SOVERSION 4)
+SET (ASSIMP_SOVERSION 5)
-SET (PROJECT_VERSION "${ASSIMP_VERSION}")
 
 SET( ASSIMP_PACKAGE_VERSION "0" CACHE STRING "the package-specific version used for uploading the sources" )
 
+if(NOT HUNTER_ENABLED)
   # Enable C++11 support globally
   set_property( GLOBAL PROPERTY CXX_STANDARD 11 )
+endif()
 
 IF(NOT IGNORE_GIT_HASH)
   # Get the current working branch
@@ -222,9 +238,13 @@ ENDIF( UNIX )
 
 # Grouped compiler settings
 IF ((CMAKE_C_COMPILER_ID MATCHES "GNU") AND NOT CMAKE_COMPILER_IS_MINGW)
+  IF(NOT HUNTER_ENABLED)
+    SET(CMAKE_CXX_FLAGS "-fPIC -std=c++0x ${CMAKE_CXX_FLAGS}")
+    SET(CMAKE_C_FLAGS "-fPIC ${CMAKE_C_FLAGS}")
+  ENDIF()
   # hide all not-exported symbols
-  SET(CMAKE_CXX_FLAGS "-g -fvisibility=hidden -fPIC -fno-strict-aliasing -Wall -std=c++0x ${CMAKE_CXX_FLAGS}")
+  SET(CMAKE_CXX_FLAGS "-g -fvisibility=hidden -fno-strict-aliasing -Wall ${CMAKE_CXX_FLAGS}")
-  SET(CMAKE_C_FLAGS "-fPIC -fno-strict-aliasing ${CMAKE_C_FLAGS}")
+  SET(CMAKE_C_FLAGS "-fno-strict-aliasing ${CMAKE_C_FLAGS}")
   SET(LIBSTDC++_LIBRARIES -lstdc++)
 ELSEIF(MSVC)
   # enable multi-core compilation with MSVC
@@ -235,20 +255,28 @@ ELSEIF(MSVC)
     ADD_COMPILE_OPTIONS(/wd4351)
   ENDIF()
 ELSEIF ( "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
-  SET(CMAKE_CXX_FLAGS "-g -fvisibility=hidden -fPIC -fno-strict-aliasing -Wall -Wno-long-long -std=c++11 ${CMAKE_CXX_FLAGS}" )
+  IF(NOT HUNTER_ENABLED)
-  SET(CMAKE_C_FLAGS "-fPIC -fno-strict-aliasing ${CMAKE_C_FLAGS}")
+    SET(CMAKE_CXX_FLAGS "-fPIC -std=c++11 ${CMAKE_CXX_FLAGS}")
+    SET(CMAKE_C_FLAGS "-fPIC ${CMAKE_C_FLAGS}")
+  ENDIF()
+  SET(CMAKE_CXX_FLAGS "-g -fvisibility=hidden -fno-strict-aliasing -Wall -Wno-long-long ${CMAKE_CXX_FLAGS}" )
+  SET(CMAKE_C_FLAGS "-fno-strict-aliasing ${CMAKE_C_FLAGS}")
 ELSEIF( CMAKE_COMPILER_IS_MINGW )
   IF (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0)
     message(FATAL_ERROR "MinGW is too old to be supported. Please update MinGW and try again.")
   ELSEIF(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.3)
     message(WARNING "MinGW is old, if you experience errors, update MinGW.")
   ENDIF()
-  SET( CMAKE_CXX_FLAGS "-fvisibility=hidden -fno-strict-aliasing -Wall -Wno-long-long -std=c++11 -Wa,-mbig-obj ${CMAKE_CXX_FLAGS}" )
+  IF(NOT HUNTER_ENABLED)
-  SET(CMAKE_C_FLAGS "-fPIC -fno-strict-aliasing ${CMAKE_C_FLAGS} ")
+    SET(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
+    SET(CMAKE_C_FLAGS "-fPIC ${CMAKE_C_FLAGS}")
+  ENDIF()
+  SET(CMAKE_CXX_FLAGS "-fvisibility=hidden -fno-strict-aliasing -Wall -Wno-long-long -Wa,-mbig-obj ${CMAKE_CXX_FLAGS}")
+  SET(CMAKE_C_FLAGS "-fno-strict-aliasing ${CMAKE_C_FLAGS}")
   ADD_DEFINITIONS( -U__STRICT_ANSI__ )
 ENDIF()
 
-IF ( IOS )
+IF ( IOS AND NOT HUNTER_ENABLED)
 
 IF (CMAKE_BUILD_TYPE STREQUAL "Debug")
   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fembed-bitcode -Og")
@@ -259,7 +287,7 @@ ELSE()
   # Experimental for pdb generation
 ENDIF()
 
-ENDIF( IOS )
+ENDIF( IOS AND NOT HUNTER_ENABLED)
 
 IF (ASSIMP_COVERALLS)
   MESSAGE(STATUS "Coveralls enabled")
@@ -326,6 +354,44 @@ IF (NOT TARGET uninstall)
   ADD_CUSTOM_TARGET(uninstall "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
 ENDIF()
 
+IF(HUNTER_ENABLED)
+  set(CONFIG_INSTALL_DIR "lib/cmake/${PROJECT_NAME}")
+  set(INCLUDE_INSTALL_DIR "include")
+
+  set(GENERATED_DIR "${CMAKE_CURRENT_BINARY_DIR}/generated")
+
+  # Configuration
+  set(VERSION_CONFIG "${GENERATED_DIR}/${PROJECT_NAME}ConfigVersion.cmake")
+  set(PROJECT_CONFIG "${GENERATED_DIR}/${PROJECT_NAME}Config.cmake")
+  set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
+  set(NAMESPACE "${PROJECT_NAME}::")
+
+  # Include module with fuction 'write_basic_package_version_file'
+  include(CMakePackageConfigHelpers)
+
+  # Note: PROJECT_VERSION is used as a VERSION
+  write_basic_package_version_file("${VERSION_CONFIG}" COMPATIBILITY SameMajorVersion)
+
+  # Use variables:
+  #   * TARGETS_EXPORT_NAME
+  #   * PROJECT_NAME
+  configure_package_config_file(
+      "cmake/assimp-hunter-config.cmake.in"
+      "${PROJECT_CONFIG}"
+      INSTALL_DESTINATION "${CONFIG_INSTALL_DIR}"
+  )
+
+  install(
+      FILES "${PROJECT_CONFIG}" "${VERSION_CONFIG}"
+      DESTINATION "${CONFIG_INSTALL_DIR}"
+  )
+
+  install(
+      EXPORT "${TARGETS_EXPORT_NAME}"
+      NAMESPACE "${NAMESPACE}"
+      DESTINATION "${CONFIG_INSTALL_DIR}"
+  )
+ELSE(HUNTER_ENABLED)
   # cmake configuration files
   CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/assimp-config.cmake.in"         "${CMAKE_CURRENT_BINARY_DIR}/assimp-config.cmake" @ONLY IMMEDIATE)
   CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/assimpTargets.cmake.in"         "${CMAKE_CURRENT_BINARY_DIR}/assimpTargets.cmake" @ONLY IMMEDIATE)
@@ -348,6 +414,7 @@ INSTALL(FILES
     "${CMAKE_CURRENT_BINARY_DIR}/assimpTargets.cmake"
     ${PACKAGE_TARGETS_FILE}
     DESTINATION "${ASSIMP_LIB_INSTALL_DIR}/cmake/assimp-${ASSIMP_VERSION_MAJOR}.${ASSIMP_VERSION_MINOR}" COMPONENT ${LIBASSIMP-DEV_COMPONENT})
+ENDIF(HUNTER_ENABLED)
 
 FIND_PACKAGE( DirectX )
 
@@ -362,6 +429,15 @@ ENDIF( SYSTEM_IRRXML )
 
 # Search for external dependencies, and build them from source if not found
 # Search for zlib
+IF(HUNTER_ENABLED)
+  hunter_add_package(ZLIB)
+  find_package(ZLIB CONFIG REQUIRED)
+
+  add_definitions(-DASSIMP_BUILD_NO_OWN_ZLIB)
+  set(ZLIB_FOUND TRUE)
+  set(ZLIB_LIBRARIES ZLIB::zlib)
+  set(ASSIMP_BUILD_MINIZIP TRUE)
+ELSE(HUNTER_ENABLED)
   IF ( NOT ASSIMP_BUILD_ZLIB )
     FIND_PACKAGE(ZLIB)
   ENDIF( NOT ASSIMP_BUILD_ZLIB )
@@ -392,8 +468,8 @@ ELSE(NOT ZLIB_FOUND)
     SET(ZLIB_LIBRARIES_LINKED -lz)
   ENDIF(NOT ZLIB_FOUND)
   INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIR})
+ENDIF(HUNTER_ENABLED)
 
-# Search for unzip
 IF( NOT IOS )
   IF( NOT ASSIMP_BUILD_MINIZIP )
     use_pkgconfig(UNZIP minizip)
@@ -477,7 +553,9 @@ ELSE (ASSIMP_BUILD_NONFREE_C4D_IMPORTER)
   ADD_DEFINITIONS( -DASSIMP_BUILD_NO_C4D_IMPORTER )
 ENDIF (ASSIMP_BUILD_NONFREE_C4D_IMPORTER)
 
+IF(NOT HUNTER_ENABLED)
   ADD_SUBDIRECTORY(contrib)
+ENDIF(NOT HUNTER_ENABLED)
 
 ADD_SUBDIRECTORY( code/ )
 IF ( ASSIMP_BUILD_ASSIMP_TOOLS )

cmake/HunterGate.cmake

@@ -0,0 +1,540 @@
+# Copyright (c) 2013-2018, Ruslan Baratov
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice,
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# This is a gate file to Hunter package manager.
+# Include this file using `include` command and add package you need, example:
+#
+#     cmake_minimum_required(VERSION 3.2)
+#
+#     include("cmake/HunterGate.cmake")
+#     HunterGate(
+#         URL "https://github.com/path/to/hunter/archive.tar.gz"
+#         SHA1 "798501e983f14b28b10cda16afa4de69eee1da1d"
+#     )
+#
+#     project(MyProject)
+#
+#     hunter_add_package(Foo)
+#     hunter_add_package(Boo COMPONENTS Bar Baz)
+#
+# Projects:
+#     * https://github.com/hunter-packages/gate/
+#     * https://github.com/ruslo/hunter
+
+option(HUNTER_ENABLED "Enable Hunter package manager support" ON)
+
+if(HUNTER_ENABLED)
+  if(CMAKE_VERSION VERSION_LESS "3.2")
+    message(
+        FATAL_ERROR
+        "At least CMake version 3.2 required for Hunter dependency management."
+        " Update CMake or set HUNTER_ENABLED to OFF."
+    )
+  endif()
+endif()
+
+include(CMakeParseArguments) # cmake_parse_arguments
+
+option(HUNTER_STATUS_PRINT "Print working status" ON)
+option(HUNTER_STATUS_DEBUG "Print a lot info" OFF)
+option(HUNTER_TLS_VERIFY "Enable/disable TLS certificate checking on downloads" ON)
+
+set(HUNTER_WIKI "https://github.com/ruslo/hunter/wiki")
+
+function(hunter_gate_status_print)
+  if(HUNTER_STATUS_PRINT OR HUNTER_STATUS_DEBUG)
+    foreach(print_message ${ARGV})
+      message(STATUS "[hunter] ${print_message}")
+    endforeach()
+  endif()
+endfunction()
+
+function(hunter_gate_status_debug)
+  if(HUNTER_STATUS_DEBUG)
+    foreach(print_message ${ARGV})
+      string(TIMESTAMP timestamp)
+      message(STATUS "[hunter *** DEBUG *** ${timestamp}] ${print_message}")
+    endforeach()
+  endif()
+endfunction()
+
+function(hunter_gate_wiki wiki_page)
+  message("------------------------------ WIKI -------------------------------")
+  message("    ${HUNTER_WIKI}/${wiki_page}")
+  message("-------------------------------------------------------------------")
+  message("")
+  message(FATAL_ERROR "")
+endfunction()
+
+function(hunter_gate_internal_error)
+  message("")
+  foreach(print_message ${ARGV})
+    message("[hunter ** INTERNAL **] ${print_message}")
+  endforeach()
+  message("[hunter ** INTERNAL **] [Directory:${CMAKE_CURRENT_LIST_DIR}]")
+  message("")
+  hunter_gate_wiki("error.internal")
+endfunction()
+
+function(hunter_gate_fatal_error)
+  cmake_parse_arguments(hunter "" "WIKI" "" "${ARGV}")
+  string(COMPARE EQUAL "${hunter_WIKI}" "" have_no_wiki)
+  if(have_no_wiki)
+    hunter_gate_internal_error("Expected wiki")
+  endif()
+  message("")
+  foreach(x ${hunter_UNPARSED_ARGUMENTS})
+    message("[hunter ** FATAL ERROR **] ${x}")
+  endforeach()
+  message("[hunter ** FATAL ERROR **] [Directory:${CMAKE_CURRENT_LIST_DIR}]")
+  message("")
+  hunter_gate_wiki("${hunter_WIKI}")
+endfunction()
+
+function(hunter_gate_user_error)
+  hunter_gate_fatal_error(${ARGV} WIKI "error.incorrect.input.data")
+endfunction()
+
+function(hunter_gate_self root version sha1 result)
+  string(COMPARE EQUAL "${root}" "" is_bad)
+  if(is_bad)
+    hunter_gate_internal_error("root is empty")
+  endif()
+
+  string(COMPARE EQUAL "${version}" "" is_bad)
+  if(is_bad)
+    hunter_gate_internal_error("version is empty")
+  endif()
+
+  string(COMPARE EQUAL "${sha1}" "" is_bad)
+  if(is_bad)
+    hunter_gate_internal_error("sha1 is empty")
+  endif()
+
+  string(SUBSTRING "${sha1}" 0 7 archive_id)
+
+  if(EXISTS "${root}/cmake/Hunter")
+    set(hunter_self "${root}")
+  else()
+    set(
+        hunter_self
+        "${root}/_Base/Download/Hunter/${version}/${archive_id}/Unpacked"
+    )
+  endif()
+
+  set("${result}" "${hunter_self}" PARENT_SCOPE)
+endfunction()
+
+# Set HUNTER_GATE_ROOT cmake variable to suitable value.
+function(hunter_gate_detect_root)
+  # Check CMake variable
+  string(COMPARE NOTEQUAL "${HUNTER_ROOT}" "" not_empty)
+  if(not_empty)
+    set(HUNTER_GATE_ROOT "${HUNTER_ROOT}" PARENT_SCOPE)
+    hunter_gate_status_debug("HUNTER_ROOT detected by cmake variable")
+    return()
+  endif()
+
+  # Check environment variable
+  string(COMPARE NOTEQUAL "$ENV{HUNTER_ROOT}" "" not_empty)
+  if(not_empty)
+    set(HUNTER_GATE_ROOT "$ENV{HUNTER_ROOT}" PARENT_SCOPE)
+    hunter_gate_status_debug("HUNTER_ROOT detected by environment variable")
+    return()
+  endif()
+
+  # Check HOME environment variable
+  string(COMPARE NOTEQUAL "$ENV{HOME}" "" result)
+  if(result)
+    set(HUNTER_GATE_ROOT "$ENV{HOME}/.hunter" PARENT_SCOPE)
+    hunter_gate_status_debug("HUNTER_ROOT set using HOME environment variable")
+    return()
+  endif()
+
+  # Check SYSTEMDRIVE and USERPROFILE environment variable (windows only)
+  if(WIN32)
+    string(COMPARE NOTEQUAL "$ENV{SYSTEMDRIVE}" "" result)
+    if(result)
+      set(HUNTER_GATE_ROOT "$ENV{SYSTEMDRIVE}/.hunter" PARENT_SCOPE)
+      hunter_gate_status_debug(
+          "HUNTER_ROOT set using SYSTEMDRIVE environment variable"
+      )
+      return()
+    endif()
+
+    string(COMPARE NOTEQUAL "$ENV{USERPROFILE}" "" result)
+    if(result)
+      set(HUNTER_GATE_ROOT "$ENV{USERPROFILE}/.hunter" PARENT_SCOPE)
+      hunter_gate_status_debug(
+          "HUNTER_ROOT set using USERPROFILE environment variable"
+      )
+      return()
+    endif()
+  endif()
+
+  hunter_gate_fatal_error(
+      "Can't detect HUNTER_ROOT"
+      WIKI "error.detect.hunter.root"
+  )
+endfunction()
+
+function(hunter_gate_download dir)
+  string(
+      COMPARE
+      NOTEQUAL
+      "$ENV{HUNTER_DISABLE_AUTOINSTALL}"
+      ""
+      disable_autoinstall
+  )
+  if(disable_autoinstall AND NOT HUNTER_RUN_INSTALL)
+    hunter_gate_fatal_error(
+        "Hunter not found in '${dir}'"
+        "Set HUNTER_RUN_INSTALL=ON to auto-install it from '${HUNTER_GATE_URL}'"
+        "Settings:"
+        "  HUNTER_ROOT: ${HUNTER_GATE_ROOT}"
+        "  HUNTER_SHA1: ${HUNTER_GATE_SHA1}"
+        WIKI "error.run.install"
+    )
+  endif()
+  string(COMPARE EQUAL "${dir}" "" is_bad)
+  if(is_bad)
+    hunter_gate_internal_error("Empty 'dir' argument")
+  endif()
+
+  string(COMPARE EQUAL "${HUNTER_GATE_SHA1}" "" is_bad)
+  if(is_bad)
+    hunter_gate_internal_error("HUNTER_GATE_SHA1 empty")
+  endif()
+
+  string(COMPARE EQUAL "${HUNTER_GATE_URL}" "" is_bad)
+  if(is_bad)
+    hunter_gate_internal_error("HUNTER_GATE_URL empty")
+  endif()
+
+  set(done_location "${dir}/DONE")
+  set(sha1_location "${dir}/SHA1")
+
+  set(build_dir "${dir}/Build")
+  set(cmakelists "${dir}/CMakeLists.txt")
+
+  hunter_gate_status_debug("Locking directory: ${dir}")
+  file(LOCK "${dir}" DIRECTORY GUARD FUNCTION)
+  hunter_gate_status_debug("Lock done")
+
+  if(EXISTS "${done_location}")
+    # while waiting for lock other instance can do all the job
+    hunter_gate_status_debug("File '${done_location}' found, skip install")
+    return()
+  endif()
+
+  file(REMOVE_RECURSE "${build_dir}")
+  file(REMOVE_RECURSE "${cmakelists}")
+
+  file(MAKE_DIRECTORY "${build_dir}") # check directory permissions
+
+  # Disabling languages speeds up a little bit, reduces noise in the output
+  # and avoids path too long windows error
+  file(
+      WRITE
+      "${cmakelists}"
+      "cmake_minimum_required(VERSION 3.2)\n"
+      "project(HunterDownload LANGUAGES NONE)\n"
+      "include(ExternalProject)\n"
+      "ExternalProject_Add(\n"
+      "    Hunter\n"
+      "    URL\n"
+      "    \"${HUNTER_GATE_URL}\"\n"
+      "    URL_HASH\n"
+      "    SHA1=${HUNTER_GATE_SHA1}\n"
+      "    DOWNLOAD_DIR\n"
+      "    \"${dir}\"\n"
+      "    TLS_VERIFY\n"
+      "    ${HUNTER_TLS_VERIFY}\n"
+      "    SOURCE_DIR\n"
+      "    \"${dir}/Unpacked\"\n"
+      "    CONFIGURE_COMMAND\n"
+      "    \"\"\n"
+      "    BUILD_COMMAND\n"
+      "    \"\"\n"
+      "    INSTALL_COMMAND\n"
+      "    \"\"\n"
+      ")\n"
+  )
+
+  if(HUNTER_STATUS_DEBUG)
+    set(logging_params "")
+  else()
+    set(logging_params OUTPUT_QUIET)
+  endif()
+
+  hunter_gate_status_debug("Run generate")
+
+  # Need to add toolchain file too.
+  # Otherwise on Visual Studio + MDD this will fail with error:
+  # "Could not find an appropriate version of the Windows 10 SDK installed on this machine"
+  if(EXISTS "${CMAKE_TOOLCHAIN_FILE}")
+    get_filename_component(absolute_CMAKE_TOOLCHAIN_FILE "${CMAKE_TOOLCHAIN_FILE}" ABSOLUTE)
+    set(toolchain_arg "-DCMAKE_TOOLCHAIN_FILE=${absolute_CMAKE_TOOLCHAIN_FILE}")
+  else()
+    # 'toolchain_arg' can't be empty
+    set(toolchain_arg "-DCMAKE_TOOLCHAIN_FILE=")
+  endif()
+
+  string(COMPARE EQUAL "${CMAKE_MAKE_PROGRAM}" "" no_make)
+  if(no_make)
+    set(make_arg "")
+  else()
+    # Test case: remove Ninja from PATH but set it via CMAKE_MAKE_PROGRAM
+    set(make_arg "-DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}")
+  endif()
+
+  execute_process(
+      COMMAND
+      "${CMAKE_COMMAND}"
+      "-H${dir}"
+      "-B${build_dir}"
+      "-G${CMAKE_GENERATOR}"
+      "${toolchain_arg}"
+      ${make_arg}
+      WORKING_DIRECTORY "${dir}"
+      RESULT_VARIABLE download_result
+      ${logging_params}
+  )
+
+  if(NOT download_result EQUAL 0)
+    hunter_gate_internal_error(
+        "Configure project failed."
+        "To reproduce the error run: ${CMAKE_COMMAND} -H${dir} -B${build_dir} -G${CMAKE_GENERATOR} ${toolchain_arg} ${make_arg}"
+        "In directory ${dir}"
+    )
+  endif()
+
+  hunter_gate_status_print(
+      "Initializing Hunter workspace (${HUNTER_GATE_SHA1})"
+      "  ${HUNTER_GATE_URL}"
+      "  -> ${dir}"
+  )
+  execute_process(
+      COMMAND "${CMAKE_COMMAND}" --build "${build_dir}"
+      WORKING_DIRECTORY "${dir}"
+      RESULT_VARIABLE download_result
+      ${logging_params}
+  )
+
+  if(NOT download_result EQUAL 0)
+    hunter_gate_internal_error("Build project failed")
+  endif()
+
+  file(REMOVE_RECURSE "${build_dir}")
+  file(REMOVE_RECURSE "${cmakelists}")
+
+  file(WRITE "${sha1_location}" "${HUNTER_GATE_SHA1}")
+  file(WRITE "${done_location}" "DONE")
+
+  hunter_gate_status_debug("Finished")
+endfunction()
+
+# Must be a macro so master file 'cmake/Hunter' can
+# apply all variables easily just by 'include' command
+# (otherwise PARENT_SCOPE magic needed)
+macro(HunterGate)
+  if(HUNTER_GATE_DONE)
+    # variable HUNTER_GATE_DONE set explicitly for external project
+    # (see `hunter_download`)
+    set_property(GLOBAL PROPERTY HUNTER_GATE_DONE YES)
+  endif()
+
+  # First HunterGate command will init Hunter, others will be ignored
+  get_property(_hunter_gate_done GLOBAL PROPERTY HUNTER_GATE_DONE SET)
+
+  if(NOT HUNTER_ENABLED)
+    # Empty function to avoid error "unknown function"
+    function(hunter_add_package)
+    endfunction()
+
+    set(
+        _hunter_gate_disabled_mode_dir
+        "${CMAKE_CURRENT_LIST_DIR}/cmake/Hunter/disabled-mode"
+    )
+    if(EXISTS "${_hunter_gate_disabled_mode_dir}")
+      hunter_gate_status_debug(
+          "Adding \"disabled-mode\" modules: ${_hunter_gate_disabled_mode_dir}"
+      )
+      list(APPEND CMAKE_PREFIX_PATH "${_hunter_gate_disabled_mode_dir}")
+    endif()
+  elseif(_hunter_gate_done)
+    hunter_gate_status_debug("Secondary HunterGate (use old settings)")
+    hunter_gate_self(
+        "${HUNTER_CACHED_ROOT}"
+        "${HUNTER_VERSION}"
+        "${HUNTER_SHA1}"
+        _hunter_self
+    )
+    include("${_hunter_self}/cmake/Hunter")
+  else()
+    set(HUNTER_GATE_LOCATION "${CMAKE_CURRENT_SOURCE_DIR}")
+
+    string(COMPARE NOTEQUAL "${PROJECT_NAME}" "" _have_project_name)
+    if(_have_project_name)
+      hunter_gate_fatal_error(
+          "Please set HunterGate *before* 'project' command. "
+          "Detected project: ${PROJECT_NAME}"
+          WIKI "error.huntergate.before.project"
+      )
+    endif()
+
+    cmake_parse_arguments(
+        HUNTER_GATE "LOCAL" "URL;SHA1;GLOBAL;FILEPATH" "" ${ARGV}
+    )
+
+    string(COMPARE EQUAL "${HUNTER_GATE_SHA1}" "" _empty_sha1)
+    string(COMPARE EQUAL "${HUNTER_GATE_URL}" "" _empty_url)
+    string(
+        COMPARE
+        NOTEQUAL
+        "${HUNTER_GATE_UNPARSED_ARGUMENTS}"
+        ""
+        _have_unparsed
+    )
+    string(COMPARE NOTEQUAL "${HUNTER_GATE_GLOBAL}" "" _have_global)
+    string(COMPARE NOTEQUAL "${HUNTER_GATE_FILEPATH}" "" _have_filepath)
+
+    if(_have_unparsed)
+      hunter_gate_user_error(
+          "HunterGate unparsed arguments: ${HUNTER_GATE_UNPARSED_ARGUMENTS}"
+      )
+    endif()
+    if(_empty_sha1)
+      hunter_gate_user_error("SHA1 suboption of HunterGate is mandatory")
+    endif()
+    if(_empty_url)
+      hunter_gate_user_error("URL suboption of HunterGate is mandatory")
+    endif()
+    if(_have_global)
+      if(HUNTER_GATE_LOCAL)
+        hunter_gate_user_error("Unexpected LOCAL (already has GLOBAL)")
+      endif()
+      if(_have_filepath)
+        hunter_gate_user_error("Unexpected FILEPATH (already has GLOBAL)")
+      endif()
+    endif()
+    if(HUNTER_GATE_LOCAL)
+      if(_have_global)
+        hunter_gate_user_error("Unexpected GLOBAL (already has LOCAL)")
+      endif()
+      if(_have_filepath)
+        hunter_gate_user_error("Unexpected FILEPATH (already has LOCAL)")
+      endif()
+    endif()
+    if(_have_filepath)
+      if(_have_global)
+        hunter_gate_user_error("Unexpected GLOBAL (already has FILEPATH)")
+      endif()
+      if(HUNTER_GATE_LOCAL)
+        hunter_gate_user_error("Unexpected LOCAL (already has FILEPATH)")
+      endif()
+    endif()
+
+    hunter_gate_detect_root() # set HUNTER_GATE_ROOT
+
+    # Beautify path, fix probable problems with windows path slashes
+    get_filename_component(
+        HUNTER_GATE_ROOT "${HUNTER_GATE_ROOT}" ABSOLUTE
+    )
+    hunter_gate_status_debug("HUNTER_ROOT: ${HUNTER_GATE_ROOT}")
+    if(NOT HUNTER_ALLOW_SPACES_IN_PATH)
+      string(FIND "${HUNTER_GATE_ROOT}" " " _contain_spaces)
+      if(NOT _contain_spaces EQUAL -1)
+        hunter_gate_fatal_error(
+            "HUNTER_ROOT (${HUNTER_GATE_ROOT}) contains spaces."
+            "Set HUNTER_ALLOW_SPACES_IN_PATH=ON to skip this error"
+            "(Use at your own risk!)"
+            WIKI "error.spaces.in.hunter.root"
+        )
+      endif()
+    endif()
+
+    string(
+        REGEX
+        MATCH
+        "[0-9]+\\.[0-9]+\\.[0-9]+[-_a-z0-9]*"
+        HUNTER_GATE_VERSION
+        "${HUNTER_GATE_URL}"
+    )
+    string(COMPARE EQUAL "${HUNTER_GATE_VERSION}" "" _is_empty)
+    if(_is_empty)
+      set(HUNTER_GATE_VERSION "unknown")
+    endif()
+
+    hunter_gate_self(
+        "${HUNTER_GATE_ROOT}"
+        "${HUNTER_GATE_VERSION}"
+        "${HUNTER_GATE_SHA1}"
+        _hunter_self
+    )
+
+    set(_master_location "${_hunter_self}/cmake/Hunter")
+    if(EXISTS "${HUNTER_GATE_ROOT}/cmake/Hunter")
+      # Hunter downloaded manually (e.g. by 'git clone')
+      set(_unused "xxxxxxxxxx")
+      set(HUNTER_GATE_SHA1 "${_unused}")
+      set(HUNTER_GATE_VERSION "${_unused}")
+    else()
+      get_filename_component(_archive_id_location "${_hunter_self}/.." ABSOLUTE)
+      set(_done_location "${_archive_id_location}/DONE")
+      set(_sha1_location "${_archive_id_location}/SHA1")
+
+      # Check Hunter already downloaded by HunterGate
+      if(NOT EXISTS "${_done_location}")
+        hunter_gate_download("${_archive_id_location}")
+      endif()
+
+      if(NOT EXISTS "${_done_location}")
+        hunter_gate_internal_error("hunter_gate_download failed")
+      endif()
+
+      if(NOT EXISTS "${_sha1_location}")
+        hunter_gate_internal_error("${_sha1_location} not found")
+      endif()
+      file(READ "${_sha1_location}" _sha1_value)
+      string(COMPARE EQUAL "${_sha1_value}" "${HUNTER_GATE_SHA1}" _is_equal)
+      if(NOT _is_equal)
+        hunter_gate_internal_error(
+            "Short SHA1 collision:"
+            "  ${_sha1_value} (from ${_sha1_location})"
+            "  ${HUNTER_GATE_SHA1} (HunterGate)"
+        )
+      endif()
+      if(NOT EXISTS "${_master_location}")
+        hunter_gate_user_error(
+            "Master file not found:"
+            "  ${_master_location}"
+            "try to update Hunter/HunterGate"
+        )
+      endif()
+    endif()
+    include("${_master_location}")
+    set_property(GLOBAL PROPERTY HUNTER_GATE_DONE YES)
+  endif()
+endmacro()

cmake/assimp-hunter-config.cmake.in

@@ -0,0 +1,14 @@
+@PACKAGE_INIT@
+
+find_package(RapidJSON CONFIG REQUIRED)
+find_package(ZLIB CONFIG REQUIRED)
+find_package(utf8 CONFIG REQUIRED)
+find_package(irrXML CONFIG REQUIRED)
+find_package(minizip CONFIG REQUIRED)
+find_package(openddlparser CONFIG REQUIRED)
+find_package(poly2tri CONFIG REQUIRED)
+find_package(polyclipping CONFIG REQUIRED)
+find_package(zip CONFIG REQUIRED)
+
+include("${CMAKE_CURRENT_LIST_DIR}/@TARGETS_EXPORT_NAME@.cmake")
+check_required_components("@PROJECT_NAME@")

code/3MF/D3MFExporter.cpp

@@ -55,7 +55,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "3MFXmlTags.h"
 #include "D3MFOpcPackage.h"
 
+#ifdef ASSIMP_USE_HUNTER
+#  include <zip/zip.h>
+#else
 #  include <contrib/zip/src/zip.h>
+#endif
 
 namespace Assimp {
 

code/3MF/D3MFImporter.cpp

@@ -58,7 +58,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <memory>
 
 #include "D3MFOpcPackage.h"
+#ifdef ASSIMP_USE_HUNTER
+#  include <minizip/unzip.h>
+#else
 #  include <unzip.h>
+#endif
 #include <assimp/irrXMLWrapper.h>
 #include "3MFXmlTags.h"
 #include <assimp/fast_atof.h>

code/3MF/D3MFOpcPackage.cpp

@@ -56,7 +56,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <map>
 #include <algorithm>
 #include <cassert>
+#ifdef ASSIMP_USE_HUNTER
+#  include <minizip/unzip.h>
+#else
 #  include <unzip.h>
+#endif
 #include "3MFXmlTags.h"
 
 namespace Assimp {
@@ -148,6 +152,15 @@ int IOSystem2Unzip::testerror(voidpf /*opaque*/, voidpf /*stream*/) {
 zlib_filefunc_def IOSystem2Unzip::get(IOSystem* pIOHandler) {
     zlib_filefunc_def mapping;
 
+#ifdef ASSIMP_USE_HUNTER
+    mapping.zopen_file = (open_file_func)open;
+    mapping.zread_file = (read_file_func)read;
+    mapping.zwrite_file = (write_file_func)write;
+    mapping.ztell_file = (tell_file_func)tell;
+    mapping.zseek_file = (seek_file_func)seek;
+    mapping.zclose_file = (close_file_func)close;
+    mapping.zerror_file = (error_file_func)testerror;
+#else
     mapping.zopen_file = open;
     mapping.zread_file = read;
     mapping.zwrite_file = write;
@@ -155,6 +168,7 @@ zlib_filefunc_def IOSystem2Unzip::get(IOSystem* pIOHandler) {
     mapping.zseek_file = seek;
     mapping.zclose_file = close;
     mapping.zerror_file = testerror;
+#endif
     mapping.opaque = reinterpret_cast<voidpf>(pIOHandler);
 
     return mapping;

code/Blender/BlenderTessellator.h

@@ -144,7 +144,11 @@ namespace Assimp
 
 #if ASSIMP_BLEND_WITH_POLY_2_TRI
 
+#ifdef ASSIMP_USE_HUNTER
+#  include <poly2tri/poly2tri.h>
+#else
 #  include "../contrib/poly2tri/poly2tri/poly2tri.h"
+#endif
 
 namespace Assimp
 {

code/CMakeLists.txt

@@ -43,7 +43,7 @@
 # 3) Add libassimp using the file lists (eliminates duplication of file names between
 #    source groups and library command)
 #
-cmake_minimum_required( VERSION 2.6 )
+cmake_minimum_required( VERSION 3.0 )
 SET( HEADER_PATH ../include/assimp )
 
 if(NOT ANDROID AND ASSIMP_ANDROID_JNIIOSYSTEM)
@@ -848,12 +848,39 @@ SET( Extra_SRCS
 )
 SOURCE_GROUP( Extra FILES ${Extra_SRCS})
 
+# irrXML
+IF(HUNTER_ENABLED)
+  hunter_add_package(irrXML)
+  find_package(irrXML CONFIG REQUIRED)
+ELSE(HUNTER_ENABLED)
+  # irrXML already included in contrib directory by parent CMakeLists.txt.
+ENDIF(HUNTER_ENABLED)
+
+# utf8
+IF(HUNTER_ENABLED)
+  hunter_add_package(utf8)
+  find_package(utf8 CONFIG REQUIRED)
+ELSE(HUNTER_ENABLED)
+  # utf8 is header-only, so Assimp doesn't need to do anything.
+ENDIF(HUNTER_ENABLED)
+
+# polyclipping
+IF(HUNTER_ENABLED)
+  hunter_add_package(polyclipping)
+  find_package(polyclipping CONFIG REQUIRED)
+ELSE(HUNTER_ENABLED)
   SET( Clipper_SRCS
     ../contrib/clipper/clipper.hpp
     ../contrib/clipper/clipper.cpp
   )
   SOURCE_GROUP( Contrib\\Clipper FILES ${Clipper_SRCS})
+ENDIF(HUNTER_ENABLED)
 
+# poly2tri
+IF(HUNTER_ENABLED)
+  hunter_add_package(poly2tri)
+  find_package(poly2tri CONFIG REQUIRED)
+ELSE(HUNTER_ENABLED)
   SET( Poly2Tri_SRCS
     ../contrib/poly2tri/poly2tri/common/shapes.cc
     ../contrib/poly2tri/poly2tri/common/shapes.h
@@ -868,7 +895,13 @@ SET( Poly2Tri_SRCS
     ../contrib/poly2tri/poly2tri/sweep/sweep_context.h
   )
   SOURCE_GROUP( Contrib\\Poly2Tri FILES ${Poly2Tri_SRCS})
+ENDIF(HUNTER_ENABLED)
 
+# minizip/unzip
+IF(HUNTER_ENABLED)
+  hunter_add_package(minizip)
+  find_package(minizip CONFIG REQUIRED)
+ELSE(HUNTER_ENABLED)
   SET( unzip_SRCS
     ../contrib/unzip/crypt.h
     ../contrib/unzip/ioapi.c
@@ -877,7 +910,13 @@ SET( unzip_SRCS
     ../contrib/unzip/unzip.h
   )
   SOURCE_GROUP(Contrib\\unzip FILES ${unzip_SRCS})
+ENDIF(HUNTER_ENABLED)
 
+# zip (https://github.com/kuba--/zip)
+IF(HUNTER_ENABLED)
+  hunter_add_package(zip)
+  find_package(zip CONFIG REQUIRED)
+ELSE(HUNTER_ENABLED)
   SET( ziplib_SRCS
     ../contrib/zip/src/miniz.h
     ../contrib/zip/src/zip.c
@@ -892,7 +931,13 @@ else()
   endif()
 
   SOURCE_GROUP( ziplib FILES ${ziplib_SRCS} )
+ENDIF(HUNTER_ENABLED)
 
+# openddlparser
+IF(HUNTER_ENABLED)
+  hunter_add_package(openddlparser)
+  find_package(openddlparser CONFIG REQUIRED)
+ELSE(HUNTER_ENABLED)
   SET ( openddl_parser_SRCS
     ../contrib/openddlparser/code/OpenDDLParser.cpp
     ../contrib/openddlparser/code/DDLNode.cpp
@@ -909,7 +954,12 @@ SET ( openddl_parser_SRCS
     ../contrib/openddlparser/include/openddlparser/Value.h
   )
   SOURCE_GROUP( Contrib\\openddl_parser FILES ${openddl_parser_SRCS})
+ENDIF(HUNTER_ENABLED)
 
+# Open3DGC
+IF(HUNTER_ENABLED)
+  # Nothing to do, not available in Hunter yet.
+ELSE(HUNTER_ENABLED)
   SET ( open3dgc_SRCS
     ../contrib/Open3DGC/o3dgcAdjacencyInfo.h
     ../contrib/Open3DGC/o3dgcArithmeticCodec.cpp
@@ -942,22 +992,29 @@ SET ( open3dgc_SRCS
     ../contrib/Open3DGC/o3dgcVector.inl
   )
   SOURCE_GROUP( Contrib\\open3dgc FILES ${open3dgc_SRCS})
+ENDIF(HUNTER_ENABLED)
 
 # Check dependencies for glTF importer with Open3DGC-compression.
 # RT-extensions is used in "contrib/Open3DGC/o3dgcTimer.h" for collecting statistics. Pointed file
 # has implementation for different platforms: WIN32, __MACH__ and other ("else" block).
 FIND_PACKAGE(RT QUIET)
-IF (RT_FOUND OR MSVC)
+IF (NOT HUNTER_ENABLED AND (RT_FOUND OR MSVC))
   SET( ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC 1 )
   ADD_DEFINITIONS( -DASSIMP_IMPORTER_GLTF_USE_OPEN3DGC=1 )
 ELSE ()
   SET (open3dgc_SRCS "")
-  MESSAGE (INFO " RT-extension not found. glTF import/export will be built without Open3DGC-compression.")
+  MESSAGE (INFO " Hunter enabled or RT-extension not found. glTF import/export will be built without Open3DGC-compression.")
   #!TODO: off course is better to remove statistics timers from o3dgc codec. Or propose to choose what to use.
 ENDIF ()
 
+# RapidJSON
+IF(HUNTER_ENABLED)
+  hunter_add_package(RapidJSON)
+  find_package(RapidJSON CONFIG REQUIRED)
+ELSE(HUNTER_ENABLED)
   INCLUDE_DIRECTORIES( "../contrib/rapidjson/include" )
   INCLUDE_DIRECTORIES( "../contrib" )
+ENDIF(HUNTER_ENABLED)
 
 # VC2010 fixes
 if(MSVC10)
@@ -974,12 +1031,14 @@ if ( MSVC )
   ADD_DEFINITIONS( -D_CRT_SECURE_NO_WARNINGS )
 endif ( MSVC )
 
+IF(NOT HUNTER_ENABLED)
   if (UNZIP_FOUND)
     SET (unzip_compile_SRCS "")
   else (UNZIP_FOUND)
     SET (unzip_compile_SRCS ${unzip_SRCS})
     INCLUDE_DIRECTORIES( "../contrib/unzip/" )
   endif (UNZIP_FOUND)
+ENDIF(NOT HUNTER_ENABLED)
 
 MESSAGE(STATUS "Enabled importer formats:${ASSIMP_IMPORTERS_ENABLED}")
 MESSAGE(STATUS "Disabled importer formats:${ASSIMP_IMPORTERS_DISABLED}")
@@ -1018,10 +1077,12 @@ SET( assimp_src
 )
 ADD_DEFINITIONS( -DOPENDDLPARSER_BUILD )
 
+IF(NOT HUNTER_ENABLED)
   INCLUDE_DIRECTORIES(
       ${IRRXML_INCLUDE_DIR}
       ../contrib/openddlparser/include
   )
+ENDIF(NOT HUNTER_ENABLED)
 
 IF (ASSIMP_BUILD_NONFREE_C4D_IMPORTER)
   SET( assimp_src ${assimp_src} ${C4D_SRCS})
@@ -1034,10 +1095,25 @@ ADD_LIBRARY(assimp::assimp ALIAS assimp)
 TARGET_INCLUDE_DIRECTORIES ( assimp PUBLIC
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>
   $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/../include>
-  $<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/include>
+  $<INSTALL_INTERFACE:include>
 )
 
+IF(HUNTER_ENABLED)
+  TARGET_LINK_LIBRARIES(assimp
+      PUBLIC
+      polyclipping::polyclipping
+      irrXML::irrXML
+      openddlparser::openddl_parser
+      poly2tri::poly2tri
+      minizip::minizip
+      ZLIB::zlib
+      RapidJSON::rapidjson
+      utf8::utf8
+      zip::zip
+  )
+ELSE(HUNTER_ENABLED)
   TARGET_LINK_LIBRARIES(assimp ${ZLIB_LIBRARIES} ${OPENDDL_PARSER_LIBRARIES} ${IRRXML_LIBRARY} )
+ENDIF(HUNTER_ENABLED)
 
 if(ASSIMP_ANDROID_JNIIOSYSTEM)
   set(ASSIMP_ANDROID_JNIIOSYSTEM_PATH port/AndroidJNI)
@@ -1119,24 +1195,37 @@ ENDIF(APPLE)
 
 # Build against external unzip, or add ../contrib/unzip so
 # assimp can #include "unzip.h"
+IF(NOT HUNTER_ENABLED)
   if (UNZIP_FOUND)
     INCLUDE_DIRECTORIES(${UNZIP_INCLUDE_DIRS})
     TARGET_LINK_LIBRARIES(assimp ${UNZIP_LIBRARIES})
   else (UNZIP_FOUND)
     INCLUDE_DIRECTORIES("../")
   endif (UNZIP_FOUND)
+ENDIF(NOT HUNTER_ENABLED)
 
 # Add RT-extension library for glTF importer with Open3DGC-compression.
 IF (RT_FOUND AND ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC)
   TARGET_LINK_LIBRARIES(assimp ${RT_LIBRARY})
 ENDIF (RT_FOUND AND ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC)
 
+IF(HUNTER_ENABLED)
+  INSTALL( TARGETS assimp
+    EXPORT "${TARGETS_EXPORT_NAME}"
+    LIBRARY DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
+    ARCHIVE DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
+    RUNTIME DESTINATION ${ASSIMP_BIN_INSTALL_DIR}
+    FRAMEWORK DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
+    COMPONENT ${LIBASSIMP_COMPONENT}
+    INCLUDES DESTINATION "include")
+ELSE(HUNTER_ENABLED)
 INSTALL( TARGETS assimp
     LIBRARY DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
     ARCHIVE DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
     RUNTIME DESTINATION ${ASSIMP_BIN_INSTALL_DIR}
     FRAMEWORK DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
     COMPONENT ${LIBASSIMP_COMPONENT})
+ENDIF(HUNTER_ENABLED)
 INSTALL( FILES ${PUBLIC_HEADERS} DESTINATION ${ASSIMP_INCLUDE_INSTALL_DIR}/assimp COMPONENT assimp-dev)
 INSTALL( FILES ${COMPILER_HEADERS} DESTINATION ${ASSIMP_INCLUDE_INSTALL_DIR}/assimp/Compiler COMPONENT assimp-dev)
 

code/Common/BaseImporter.cpp

@@ -320,7 +320,11 @@ std::string BaseImporter::GetExtension( const std::string& file ) {
     return false;
 }
 
+#ifdef ASSIMP_USE_HUNTER
+#  include <utf8/utf8.h>
+#else
 #  include "../contrib/utf8cpp/source/utf8.h"
+#endif
 
 // ------------------------------------------------------------------------------------------------
 // Convert to UTF8 data

code/Importer/IFC/IFCGeometry.cpp

@@ -49,8 +49,13 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "Common/PolyTools.h"
 #include "PostProcessing/ProcessHelper.h"
 
+#ifdef ASSIMP_USE_HUNTER
+#  include <poly2tri/poly2tri.h>
+#  include <polyclipping/clipper.hpp>
+#else
 #  include "../contrib/poly2tri/poly2tri/poly2tri.h"
 #  include "../contrib/clipper/clipper.hpp"
+#endif
 
 #include <memory>
 #include <iterator>

code/Importer/IFC/IFCLoader.cpp

@@ -52,8 +52,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <tuple>
 
 #ifndef ASSIMP_BUILD_NO_COMPRESSED_IFC
+#  ifdef ASSIMP_USE_HUNTER
+#    include <minizip/unzip.h>
+#  else
 #    include <unzip.h>
 #  endif
+#endif
 
 #include "IFCLoader.h"
 #include "../STEPParser/STEPFileReader.h"

code/Importer/IFC/IFCOpenings.cpp

@@ -49,8 +49,13 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "Common/PolyTools.h"
 #include "PostProcessing/ProcessHelper.h"
 
+#ifdef ASSIMP_USE_HUNTER
+#  include <poly2tri/poly2tri.h>
+#  include <polyclipping/clipper.hpp>
+#else
 #  include "../contrib/poly2tri/poly2tri/poly2tri.h"
 #  include "../contrib/clipper/clipper.hpp"
+#endif
 
 #include <iterator>
 

code/Importer/STEPParser/STEPFileEncoding.cpp

@@ -45,7 +45,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include "STEPFileEncoding.h"
 #include <assimp/fast_atof.h>
+#ifdef ASSIMP_USE_HUNTER
+#  include <utf8/utf8.h>
+#else
 #  include <contrib/utf8cpp/source/utf8.h>
+#endif
 
 #include <memory>
 

code/MMD/MMDPmxParser.cpp

@@ -42,7 +42,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <utility>
 #include "MMDPmxParser.h"
 #include <assimp/StringUtils.h>
+#ifdef ASSIMP_USE_HUNTER
+#  include <utf8/utf8.h>
+#else
 #  include "../contrib/utf8cpp/source/utf8.h"
+#endif
 #include <assimp/Exceptional.h>
 
 namespace pmx

code/OpenGEX/OpenGEXImporter.cpp

@@ -213,7 +213,11 @@ static void propId2StdString( Property *prop, std::string &name, std::string &ke
     }
 
     if ( nullptr != prop->m_key ) {
+#ifdef ASSIMP_USE_HUNTER
+        name = prop->m_key->m_text.m_buffer;
+#else
         name = prop->m_key->m_buffer;
+#endif
         if ( Value::ddl_string == prop->m_value->m_type ) {
             key = prop->m_value->getString();
         }
@@ -498,7 +502,11 @@ static void getRefNames( DDLNode *node, std::vector<std::string> &names ) {
         for( size_t i = 0; i < ref->m_numRefs; i++ )  {
             Name *currentName( ref->m_referencedName[ i ] );
             if( nullptr != currentName && nullptr != currentName->m_id ) {
+#ifdef ASSIMP_USE_HUNTER
+                const std::string name( currentName->m_id->m_text.m_buffer );
+#else
                 const std::string name( currentName->m_id->m_buffer );
+#endif
                 if( !name.empty() ) {
                     names.push_back( name );
                 }
@@ -1039,7 +1047,11 @@ void OpenGEXImporter::handleColorNode( ODDLParser::DDLNode *node, aiScene * /*pS
                 col.g = col4.g;
                 col.b = col4.b;
             }
+#ifdef ASSIMP_USE_HUNTER
+            const ColorType colType( getColorType( &prop->m_key->m_text ) );
+#else
             const ColorType colType( getColorType( prop->m_key ) );
+#endif
             if( DiffuseColor == colType ) {
                 m_currentMaterial->AddProperty( &col, 1, AI_MATKEY_COLOR_DIFFUSE );
             } else if( SpecularColor == colType ) {

code/Q3BSP/Q3BSPZipArchive.cpp

@@ -123,6 +123,15 @@ int IOSystem2Unzip::testerror(voidpf /*opaque*/, voidpf /*stream*/) {
 zlib_filefunc_def IOSystem2Unzip::get(IOSystem* pIOHandler) {
     zlib_filefunc_def mapping;
 
+#ifdef ASSIMP_USE_HUNTER
+    mapping.zopen_file = (open_file_func)open;
+    mapping.zread_file = (read_file_func)read;
+    mapping.zwrite_file = (write_file_func)write;
+    mapping.ztell_file = (tell_file_func)tell;
+    mapping.zseek_file = (seek_file_func)seek;
+    mapping.zclose_file = (close_file_func)close;
+    mapping.zerror_file = (error_file_func)testerror;
+#else
     mapping.zopen_file = open;
     mapping.zread_file = read;
     mapping.zwrite_file = write;
@@ -130,6 +139,7 @@ zlib_filefunc_def IOSystem2Unzip::get(IOSystem* pIOHandler) {
     mapping.zseek_file = seek;
     mapping.zclose_file = close;
     mapping.zerror_file = testerror;
+#endif
     mapping.opaque = (voidpf) pIOHandler;
 
     return mapping;

code/Q3BSP/Q3BSPZipArchive.h

@@ -42,7 +42,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef AI_Q3BSP_ZIPARCHIVE_H_INC
 #define AI_Q3BSP_ZIPARCHIVE_H_INC
 
+#ifdef ASSIMP_USE_HUNTER
+#  include <minizip/unzip.h>
+#else
 #  include <unzip.h>
+#endif
 #include <assimp/IOStream.hpp>
 #include <assimp/IOSystem.hpp>
 #include <vector>

code/SIB/SIBImporter.cpp

@@ -59,8 +59,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/ByteSwapper.h>
 #include <assimp/StreamReader.h>
 #include <assimp/TinyFormatter.h>
+#ifdef ASSIMP_USE_HUNTER
+#  include <utf8/utf8.h>
+#else
 //#  include "../contrib/ConvertUTF/ConvertUTF.h"
 #  include "../contrib/utf8cpp/source/utf8.h"
+#endif
 #include <assimp/IOSystem.hpp>
 #include <assimp/DefaultLogger.hpp>
 #include <assimp/scene.h>

code/X3D/FIReader.cpp

@@ -60,7 +60,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/types.h>
 #include <assimp/MemoryIOWrapper.h>
 #include <assimp/irrXMLWrapper.h>
+#ifdef ASSIMP_USE_HUNTER
+#  include <utf8/utf8.h>
+#else
 #  include "../contrib/utf8cpp/source/utf8.h"
+#endif
 #include <assimp/fast_atof.h>
 #include <stack>
 #include <map>

code/X3D/FIReader.hpp

@@ -57,7 +57,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <vector>
 //#include <stdio.h>
 //#include <cstdint>
+#ifdef ASSIMP_USE_HUNTER
+#  include <irrXML/irrXML.h>
+#else
 #  include <irrXML.h>
+#endif
 
 namespace Assimp {
 

include/assimp/irrXMLWrapper.h

@@ -44,7 +44,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define INCLUDED_AI_IRRXML_WRAPPER
 
 // some long includes ....
+#ifdef ASSIMP_USE_HUNTER
+#  include <irrXML/irrXML.h>
+#else
 #  include <irrXML.h>
+#endif
 #include "IOStream.hpp"
 #include "BaseImporter.h"
 #include <vector>

test/CMakeLists.txt

@@ -37,7 +37,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 #----------------------------------------------------------------------
-cmake_minimum_required( VERSION 2.6 )
+cmake_minimum_required( VERSION 3.0 )
 
 INCLUDE_DIRECTORIES(
 	${Assimp_SOURCE_DIR}/contrib/gtest/include