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-rw-r--r--share/cmake-3.16/Modules/CheckLibraryExists.cmake99
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diff --git a/share/cmake-3.16/Modules/CheckLibraryExists.cmake b/share/cmake-3.16/Modules/CheckLibraryExists.cmake
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--- a/share/cmake-3.16/Modules/CheckLibraryExists.cmake
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-# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
-# file Copyright.txt or https://cmake.org/licensing for details.
-
-#[=======================================================================[.rst:
-CheckLibraryExists
-------------------
-
-Check if the function exists.
-
-.. command:: CHECK_LIBRARY_EXISTS
-
- .. code-block:: cmake
-
- CHECK_LIBRARY_EXISTS(LIBRARY FUNCTION LOCATION VARIABLE)
-
- ::
-
- LIBRARY - the name of the library you are looking for
- FUNCTION - the name of the function
- LOCATION - location where the library should be found
- VARIABLE - variable to store the result
- Will be created as an internal cache variable.
-
-
-
-The following variables may be set before calling this macro to modify
-the way the check is run:
-
-::
-
- CMAKE_REQUIRED_FLAGS = string of compile command line flags
- CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
- CMAKE_REQUIRED_LINK_OPTIONS = list of options to pass to link command
- CMAKE_REQUIRED_LIBRARIES = list of libraries to link
- CMAKE_REQUIRED_QUIET = execute quietly without messages
-#]=======================================================================]
-
-include_guard(GLOBAL)
-
-macro(CHECK_LIBRARY_EXISTS LIBRARY FUNCTION LOCATION VARIABLE)
- if(NOT DEFINED "${VARIABLE}")
- set(MACRO_CHECK_LIBRARY_EXISTS_DEFINITION
- "-DCHECK_FUNCTION_EXISTS=${FUNCTION} ${CMAKE_REQUIRED_FLAGS}")
- if(NOT CMAKE_REQUIRED_QUIET)
- message(STATUS "Looking for ${FUNCTION} in ${LIBRARY}")
- endif()
- set(CHECK_LIBRARY_EXISTS_LINK_OPTIONS)
- if(CMAKE_REQUIRED_LINK_OPTIONS)
- set(CHECK_LIBRARY_EXISTS_LINK_OPTIONS
- LINK_OPTIONS ${CMAKE_REQUIRED_LINK_OPTIONS})
- endif()
- set(CHECK_LIBRARY_EXISTS_LIBRARIES ${LIBRARY})
- if(CMAKE_REQUIRED_LIBRARIES)
- set(CHECK_LIBRARY_EXISTS_LIBRARIES
- ${CHECK_LIBRARY_EXISTS_LIBRARIES} ${CMAKE_REQUIRED_LIBRARIES})
- endif()
-
- if(CMAKE_C_COMPILER_LOADED)
- set(_cle_source ${CMAKE_ROOT}/Modules/CheckFunctionExists.c)
- elseif(CMAKE_CXX_COMPILER_LOADED)
- set(_cle_source ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckLibraryExists/CheckFunctionExists.cxx)
- configure_file(${CMAKE_ROOT}/Modules/CheckFunctionExists.c "${_cle_source}" COPYONLY)
- else()
- message(FATAL_ERROR "CHECK_FUNCTION_EXISTS needs either C or CXX language enabled")
- endif()
-
- try_compile(${VARIABLE}
- ${CMAKE_BINARY_DIR}
- ${_cle_source}
- COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
- ${CHECK_LIBRARY_EXISTS_LINK_OPTIONS}
- LINK_LIBRARIES ${CHECK_LIBRARY_EXISTS_LIBRARIES}
- CMAKE_FLAGS
- -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION}
- -DLINK_DIRECTORIES:STRING=${LOCATION}
- OUTPUT_VARIABLE OUTPUT)
- unset(_cle_source)
-
- if(${VARIABLE})
- if(NOT CMAKE_REQUIRED_QUIET)
- message(STATUS "Looking for ${FUNCTION} in ${LIBRARY} - found")
- endif()
- set(${VARIABLE} 1 CACHE INTERNAL "Have library ${LIBRARY}")
- file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
- "Determining if the function ${FUNCTION} exists in the ${LIBRARY} "
- "passed with the following output:\n"
- "${OUTPUT}\n\n")
- else()
- if(NOT CMAKE_REQUIRED_QUIET)
- message(STATUS "Looking for ${FUNCTION} in ${LIBRARY} - not found")
- endif()
- set(${VARIABLE} "" CACHE INTERNAL "Have library ${LIBRARY}")
- file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
- "Determining if the function ${FUNCTION} exists in the ${LIBRARY} "
- "failed with the following output:\n"
- "${OUTPUT}\n\n")
- endif()
- endif()
-endmacro()