external/CMakeLists.txt

# Copyright (c) 2015-2016 The Khronos Group Inc.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and/or associated documentation files (the
# "Materials"), to deal in the Materials without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Materials, and to
# permit persons to whom the Materials are furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Materials.
#
# MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
# KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
# SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
#    https://www.khronos.org/registry/
#
# THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.

if (DEFINED SPIRV-Headers_SOURCE_DIR)
  # This allows flexible position of the SPIRV-Headers repo.
  set(SPIRV_HEADER_DIR ${SPIRV-Headers_SOURCE_DIR})
else()
  set(SPIRV_HEADER_DIR ${CMAKE_CURRENT_SOURCE_DIR}/spirv-headers)
endif()

if (IS_DIRECTORY ${SPIRV_HEADER_DIR})
  set(SPIRV_HEADER_INCLUDE_DIR ${SPIRV_HEADER_DIR}/include PARENT_SCOPE)
else()
  message(FATAL_ERROR
    "SPIRV-Headers was not found - please checkout a copy under external/.")
endif()

if (NOT ${SPIRV_SKIP_EXECUTABLES})
  # Find gmock if we can. If it's not already configured, then try finding
  # it in external/googletest.
  if (TARGET gmock)
    message(STATUS "Google Mock already configured")
  else()
    set(GMOCK_DIR ${CMAKE_CURRENT_SOURCE_DIR}/googletest/googlemock)
    if(EXISTS ${GMOCK_DIR})
      if(WIN32)
        option(gtest_force_shared_crt
          "Use shared (DLL) run-time lib even when Google Test is built as static lib."
          ON)
      endif()
      add_subdirectory(${GMOCK_DIR})
    endif()
  endif()
endif()