# SPDX-License-Identifier: BSD-3-Clause
# Copyright 2019 Blender Foundation.

# - Find Universal Scene Description (USD) library
# Find the native USD includes and libraries
# This module defines
#  USD_INCLUDE_DIRS, where to find USD headers, Set when
#                        USD_INCLUDE_DIR is found.
#  USD_LIBRARIES, libraries to link against to use USD.
#  USD_ROOT_DIR, The base directory to search for USD.
#                    This can also be an environment variable.
#  USD_FOUND, If false, do not try to use USD.
#

# If USD_ROOT_DIR was defined in the environment, use it.
IF(NOT USD_ROOT_DIR AND NOT $ENV{USD_ROOT_DIR} STREQUAL "")
  SET(USD_ROOT_DIR $ENV{USD_ROOT_DIR})
ENDIF()

SET(_usd_SEARCH_DIRS
  ${USD_ROOT_DIR}
  /opt/lib/usd
)

FIND_PATH(USD_INCLUDE_DIR
  NAMES
    pxr/usd/usd/api.h
  HINTS
    ${_usd_SEARCH_DIRS}
  PATH_SUFFIXES
    include
  DOC "Universal Scene Description (USD) header files"
)

# Since USD 21.11 the libraries are prefixed with "usd_", i.e.
# "libusd_m.a" became "libusd_usd_m.a".
# See https://github.com/PixarAnimationStudios/USD/blob/release/CHANGELOG.md#2111---2021-11-01
FIND_LIBRARY(USD_LIBRARY
  NAMES
    usd_usd_m usd_usd_ms usd_m usd_ms
    ${PXR_LIB_PREFIX}usd
  NAMES_PER_DIR
  HINTS
    ${_usd_SEARCH_DIRS}
  PATH_SUFFIXES
    lib64 lib lib/static
  DOC "Universal Scene Description (USD) monolithic library"
)

IF(${USD_LIBRARY_NOTFOUND})
  set(USD_FOUND FALSE)
ELSE()
  # handle the QUIETLY and REQUIRED arguments and set USD_FOUND to TRUE if
  # all listed variables are TRUE
  INCLUDE(FindPackageHandleStandardArgs)
  FIND_PACKAGE_HANDLE_STANDARD_ARGS(USD DEFAULT_MSG USD_LIBRARY USD_INCLUDE_DIR)

  IF(USD_FOUND)
    get_filename_component(USD_LIBRARY_DIR ${USD_LIBRARY} DIRECTORY)
    SET(USD_INCLUDE_DIRS ${USD_INCLUDE_DIR})
    set(USD_LIBRARIES ${USD_LIBRARY})
  ENDIF()
ENDIF()

MARK_AS_ADVANCED(
  USD_INCLUDE_DIR
  USD_LIBRARY_DIR
  USD_LIBRARY
)

UNSET(_usd_SEARCH_DIRS)
