new stuff

vendor/assimp/contrib/draco/cmake/draco_dependencies.cmake

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+# Copyright 2022 The Draco Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+if(DRACO_CMAKE_DRACO_DEPENDENCIES_CMAKE)
+  return()
+endif()
+set(DRACO_CMAKE_DRACO_DEPENDENCIES_CMAKE 1)
+
+include("${draco_root}/cmake/draco_variables.cmake")
+
+# Each variable holds a user specified custom path to a local copy of the
+# sources that belong to each project that Draco depends on. When paths are
+# empty the build will be generated pointing to the Draco git submodules.
+# Otherwise the paths specified by the user will be used in the build
+# configuration.
+
+# Path to the Eigen. The path must contain the Eigen directory.
+set(DRACO_EIGEN_PATH)
+draco_track_configuration_variable(DRACO_EIGEN_PATH)
+
+# Path to the gulrak/filesystem installation. The path specified must contain
+# the ghc subdirectory that houses the filesystem includes.
+set(DRACO_FILESYSTEM_PATH)
+draco_track_configuration_variable(DRACO_FILESYSTEM_PATH)
+
+# Path to the googletest installation. The path must be to the root of the
+# Googletest project directory.
+set(DRACO_GOOGLETEST_PATH)
+draco_track_configuration_variable(DRACO_GOOGLETEST_PATH)
+
+# Path to the syoyo/tinygltf installation. The path must be to the root of the
+# project directory.
+set(DRACO_TINYGLTF_PATH)
+draco_track_configuration_variable(DRACO_TINYGLTF_PATH)
+
+# Utility macro for killing the build due to a missing submodule directory.
+macro(draco_die_missing_submodule dir)
+  message(FATAL_ERROR "${dir} missing, run git submodule update --init")
+endmacro()
+
+# Determines the Eigen location and updates the build configuration accordingly.
+macro(draco_setup_eigen)
+  if(DRACO_EIGEN_PATH)
+    set(eigen_path "${DRACO_EIGEN_PATH}")
+
+    if(NOT IS_DIRECTORY "${eigen_path}")
+      message(FATAL_ERROR "DRACO_EIGEN_PATH does not exist.")
+    endif()
+  else()
+    set(eigen_path "${draco_root}/third_party/eigen")
+
+    if(NOT IS_DIRECTORY "${eigen_path}")
+      draco_die_missing_submodule("${eigen_path}")
+    endif()
+  endif()
+
+  set(eigen_include_path "${eigen_path}/Eigen")
+
+  if(NOT EXISTS "${eigen_path}/Eigen")
+    message(FATAL_ERROR "The eigen path does not contain an Eigen directory.")
+  endif()
+
+  list(APPEND draco_include_paths "${eigen_path}")
+endmacro()
+
+# Determines the gulrak/filesystem location and updates the build configuration
+# accordingly.
+macro(draco_setup_filesystem)
+  if(DRACO_FILESYSTEM_PATH)
+    set(fs_path "${DRACO_FILESYSTEM_PATH}")
+
+    if(NOT IS_DIRECTORY "${fs_path}")
+      message(FATAL_ERROR "DRACO_FILESYSTEM_PATH does not exist.")
+    endif()
+  else()
+    set(fs_path "${draco_root}/third_party/filesystem/include")
+
+    if(NOT IS_DIRECTORY "${fs_path}")
+      draco_die_missing_submodule("${fs_path}")
+    endif()
+  endif()
+
+  list(APPEND draco_include_paths "${fs_path}")
+endmacro()
+
+# Determines the Googletest location and sets up include and source list vars
+# for the draco_tests build.
+macro(draco_setup_googletest)
+  if(DRACO_GOOGLETEST_PATH)
+    set(gtest_path "${DRACO_GOOGLETEST_PATH}")
+    if(NOT IS_DIRECTORY "${gtest_path}")
+      message(FATAL_ERROR "DRACO_GOOGLETEST_PATH does not exist.")
+    endif()
+  else()
+    set(gtest_path "${draco_root}/third_party/googletest")
+  endif()
+
+  list(APPEND draco_test_include_paths ${draco_include_paths}
+              "${gtest_path}/include" "${gtest_path}/googlemock"
+              "${gtest_path}/googletest/include" "${gtest_path}/googletest")
+
+  list(APPEND draco_gtest_all "${gtest_path}/googletest/src/gtest-all.cc")
+  list(APPEND draco_gtest_main "${gtest_path}/googletest/src/gtest_main.cc")
+endmacro()
+
+
+# Determines the location of TinyGLTF and updates the build configuration
+# accordingly.
+macro(draco_setup_tinygltf)
+  if(DRACO_TINYGLTF_PATH)
+    set(tinygltf_path "${DRACO_TINYGLTF_PATH}")
+
+    if(NOT IS_DIRECTORY "${tinygltf_path}")
+      message(FATAL_ERROR "DRACO_TINYGLTF_PATH does not exist.")
+    endif()
+  else()
+    set(tinygltf_path "${draco_root}/third_party/tinygltf")
+
+    if(NOT IS_DIRECTORY "${tinygltf_path}")
+      draco_die_missing_submodule("${tinygltf_path}")
+    endif()
+  endif()
+
+  list(APPEND draco_include_paths "${tinygltf_path}")
+endmacro()