12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485 |
- #.rst:
- # CMakeFindDependencyMacro
- # -------------------------
- #
- # ::
- #
- # find_dependency(<dep> [<version> [EXACT]])
- #
- #
- # ``find_dependency()`` wraps a :command:`find_package` call for a package
- # dependency. It is designed to be used in a <package>Config.cmake file, and it
- # forwards the correct parameters for EXACT, QUIET and REQUIRED which were
- # passed to the original :command:`find_package` call. It also sets an
- # informative diagnostic message if the dependency could not be found.
- #
- #=============================================================================
- # Copyright 2013 Stephen Kelly <steveire@gmail.com>
- #
- # Distributed under the OSI-approved BSD License (the "License");
- # see accompanying file Copyright.txt for details.
- #
- # This software is distributed WITHOUT ANY WARRANTY; without even the
- # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- # See the License for more information.
- #=============================================================================
- # (To distribute this file outside of CMake, substitute the full
- # License text for the above reference.)
- macro(find_dependency dep)
- if (NOT ${dep}_FOUND)
- set(cmake_fd_version)
- if (${ARGC} GREATER 1)
- if ("${ARGV1}" STREQUAL "")
- message(FATAL_ERROR "Invalid arguments to find_dependency. VERSION is empty")
- endif()
- if ("${ARGV1}" STREQUAL EXACT)
- message(FATAL_ERROR "Invalid arguments to find_dependency. EXACT may only be specified if a VERSION is specified")
- endif()
- set(cmake_fd_version ${ARGV1})
- endif()
- set(cmake_fd_exact_arg)
- if(${ARGC} GREATER 2)
- if (NOT "${ARGV2}" STREQUAL EXACT)
- message(FATAL_ERROR "Invalid arguments to find_dependency")
- endif()
- set(cmake_fd_exact_arg EXACT)
- endif()
- if(${ARGC} GREATER 3)
- message(FATAL_ERROR "Invalid arguments to find_dependency")
- endif()
- set(cmake_fd_quiet_arg)
- if(${CMAKE_FIND_PACKAGE_NAME}_FIND_QUIETLY)
- set(cmake_fd_quiet_arg QUIET)
- endif()
- set(cmake_fd_required_arg)
- if(${CMAKE_FIND_PACKAGE_NAME}_FIND_REQUIRED)
- set(cmake_fd_required_arg REQUIRED)
- endif()
- get_property(cmake_fd_alreadyTransitive GLOBAL PROPERTY
- _CMAKE_${dep}_TRANSITIVE_DEPENDENCY
- )
- find_package(${dep} ${cmake_fd_version}
- ${cmake_fd_exact_arg}
- ${cmake_fd_quiet_arg}
- ${cmake_fd_required_arg}
- )
- if(NOT DEFINED cmake_fd_alreadyTransitive OR cmake_fd_alreadyTransitive)
- set_property(GLOBAL PROPERTY _CMAKE_${dep}_TRANSITIVE_DEPENDENCY TRUE)
- endif()
- if (NOT ${dep}_FOUND)
- set(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE "${CMAKE_FIND_PACKAGE_NAME} could not be found because dependency ${dep} could not be found.")
- set(${CMAKE_FIND_PACKAGE_NAME}_FOUND False)
- return()
- endif()
- set(cmake_fd_version)
- set(cmake_fd_required_arg)
- set(cmake_fd_quiet_arg)
- set(cmake_fd_exact_arg)
- endif()
- endmacro()
|