CMake Policy Implementation changes.

2026-05-16 21:37:44 +00:00
parent 15bb051619
commit 689d5e979d
12 changed files with 765 additions and 166 deletions
@@ -0,0 +1,72 @@
+include(CMakeParseArguments)
+include(FetchContent)
+
+# Resolve hdk-assets for examples only.
+function(hdk_resolve_example_assets)
+  set(_opts "")
+  set(_one_value OUT_VAR FETCH_OPTION MIN_VERSION GIT_REPOSITORY GIT_TAG CONTEXT)
+  cmake_parse_arguments(HDK_ASSETS "${_opts}" "${_one_value}" "" ${ARGN})
+
+  if(NOT HDK_ASSETS_OUT_VAR)
+    message(FATAL_ERROR "hdk_resolve_example_assets requires OUT_VAR")
+  endif()
+
+  set(_resolved_assets_dir "")
+  set(_repo_assets_dir "${CMAKE_CURRENT_SOURCE_DIR}/../../assets")
+  if(EXISTS "${_repo_assets_dir}/textures")
+    set(_resolved_assets_dir "${_repo_assets_dir}")
+  endif()
+
+  if(NOT _resolved_assets_dir)
+    if(HDK_ASSETS_MIN_VERSION)
+      find_package(hdk_assets ${HDK_ASSETS_MIN_VERSION} QUIET CONFIG NAMES hdk-assets hdk_assets)
+    else()
+      find_package(hdk_assets QUIET CONFIG NAMES hdk-assets hdk_assets)
+    endif()
+
+    foreach(_candidate_var IN ITEMS HDK_ASSETS_SOURCE_DIR HDK_ASSETS_DIR hdk_assets_SOURCE_DIR hdk_assets_DIR)
+      if(NOT _resolved_assets_dir AND DEFINED ${_candidate_var})
+        set(_candidate_dir "${${_candidate_var}}")
+        if(EXISTS "${_candidate_dir}/textures")
+          set(_resolved_assets_dir "${_candidate_dir}")
+        endif()
+      endif()
+    endforeach()
+
+    if(NOT _resolved_assets_dir AND DEFINED hdk_assets_DIR)
+      get_filename_component(_hdk_assets_prefix "${hdk_assets_DIR}" DIRECTORY)
+      get_filename_component(_hdk_assets_prefix "${_hdk_assets_prefix}" DIRECTORY)
+      get_filename_component(_hdk_assets_prefix "${_hdk_assets_prefix}" DIRECTORY)
+      if(EXISTS "${_hdk_assets_prefix}/assets/textures")
+        set(_resolved_assets_dir "${_hdk_assets_prefix}/assets")
+      endif()
+    endif()
+  endif()
+
+  if(NOT _resolved_assets_dir)
+    if(NOT HDK_ASSETS_FETCH_OPTION)
+      if(HDK_ASSETS_CONTEXT)
+        message(FATAL_ERROR "No suitable hdk-assets source found for ${HDK_ASSETS_CONTEXT} and fetch fallback is disabled")
+      else()
+        message(FATAL_ERROR "No suitable hdk-assets source found and fetch fallback is disabled")
+      endif()
+    endif()
+
+    if(NOT HDK_ASSETS_GIT_REPOSITORY)
+      message(FATAL_ERROR "hdk_resolve_example_assets fallback requires GIT_REPOSITORY")
+    endif()
+    if(NOT HDK_ASSETS_GIT_TAG)
+      message(FATAL_ERROR "hdk_resolve_example_assets fallback requires GIT_TAG")
+    endif()
+
+    FetchContent_Declare(
+      hdk_assets
+      GIT_REPOSITORY ${HDK_ASSETS_GIT_REPOSITORY}
+      GIT_TAG ${HDK_ASSETS_GIT_TAG}
+    )
+    FetchContent_MakeAvailable(hdk_assets)
+    set(_resolved_assets_dir "${hdk_assets_SOURCE_DIR}")
+  endif()
+
+  set(${HDK_ASSETS_OUT_VAR} "${_resolved_assets_dir}" PARENT_SCOPE)
+endfunction()