Support.cmake 93.6 KB
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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.

#
# This file is a "template" file used by various FindPython modules.
#

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cmake_policy (GET CMP0094 _${_PYTHON_PREFIX}_LOOKUP_POLICY)

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cmake_policy (VERSION 3.7)

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if (_${_PYTHON_PREFIX}_LOOKUP_POLICY)
  cmake_policy (SET CMP0094 ${_${_PYTHON_PREFIX}_LOOKUP_POLICY})
endif()

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#
# Initial configuration
#
if (NOT DEFINED _PYTHON_PREFIX)
  message (FATAL_ERROR "FindPython: INTERNAL ERROR")
endif()
if (NOT DEFINED _${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR)
  message (FATAL_ERROR "FindPython: INTERNAL ERROR")
endif()
if (_${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR EQUAL 3)
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  set(_${_PYTHON_PREFIX}_VERSIONS 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0)
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elseif (_${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR EQUAL 2)
  set(_${_PYTHON_PREFIX}_VERSIONS 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0)
else()
  message (FATAL_ERROR "FindPython: INTERNAL ERROR")
endif()

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get_property(_${_PYTHON_PREFIX}_CMAKE_ROLE GLOBAL PROPERTY CMAKE_ROLE)

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#
# helper commands
#
macro (_PYTHON_DISPLAY_FAILURE _PYTHON_MSG)
  if (${_PYTHON_PREFIX}_FIND_REQUIRED)
    message (FATAL_ERROR "${_PYTHON_MSG}")
  else()
    if (NOT ${_PYTHON_PREFIX}_FIND_QUIETLY)
      message(STATUS "${_PYTHON_MSG}")
    endif ()
  endif()

  set (${_PYTHON_PREFIX}_FOUND FALSE)
  string (TOUPPER "${_PYTHON_PREFIX}" _${_PYTHON_PREFIX}_UPPER_PREFIX)
  set (${_PYTHON_UPPER_PREFIX}_FOUND FALSE)
  return()
endmacro()


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macro (_PYTHON_FIND_FRAMEWORKS)
  set (${_PYTHON_PREFIX}_FRAMEWORKS)
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  if (CMAKE_HOST_APPLE OR APPLE)
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    set (_pff_frameworks ${CMAKE_FRAMEWORK_PATH}
                    $ENV{CMAKE_FRAMEWORK_PATH}
                    ~/Library/Frameworks
                    /usr/local/Frameworks
                    ${CMAKE_SYSTEM_FRAMEWORK_PATH})
    list (REMOVE_DUPLICATES _pff_frameworks)
    foreach (_pff_framework IN LISTS _pff_frameworks)
      if (EXISTS ${_pff_framework}/Python.framework)
        list (APPEND ${_PYTHON_PREFIX}_FRAMEWORKS ${_pff_framework}/Python.framework)
      endif()
    endforeach()
    unset (_pff_frameworks)
    unset (_pff_framework)
  endif()
endmacro()

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function (_PYTHON_GET_FRAMEWORKS _PYTHON_PGF_FRAMEWORK_PATHS _PYTHON_VERSION)
  set (_PYTHON_FRAMEWORK_PATHS)
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  foreach (_PYTHON_FRAMEWORK IN LISTS ${_PYTHON_PREFIX}_FRAMEWORKS)
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    list (APPEND _PYTHON_FRAMEWORK_PATHS
          "${_PYTHON_FRAMEWORK}/Versions/${_PYTHON_VERSION}")
  endforeach()
  set (${_PYTHON_PGF_FRAMEWORK_PATHS} ${_PYTHON_FRAMEWORK_PATHS} PARENT_SCOPE)
endfunction()

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function (_PYTHON_GET_REGISTRIES _PYTHON_PGR_REGISTRY_PATHS _PYTHON_VERSION)
  string (REPLACE "." "" _PYTHON_VERSION_NO_DOTS ${_PYTHON_VERSION})
  set (${_PYTHON_PGR_REGISTRY_PATHS}
       [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_PYTHON_VERSION}-${_${_PYTHON_PREFIX}_ARCH}\\InstallPath]
       [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_PYTHON_VERSION}-${_${_PYTHON_PREFIX}_ARCH2}\\InstallPath]
       [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_PYTHON_VERSION}\\InstallPath]
       [HKEY_CURRENT_USER\\SOFTWARE\\Python\\ContinuumAnalytics\\Anaconda${_PYTHON_VERSION_NO_DOTS}-${_${_PYTHON_PREFIX}_ARCH}\\InstallPath]
       [HKEY_CURRENT_USER\\SOFTWARE\\Python\\ContinuumAnalytics\\Anaconda${_PYTHON_VERSION_NO_DOTS}-${_${_PYTHON_PREFIX}_ARCH2}\\InstallPath]
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_PYTHON_VERSION}-${_${_PYTHON_PREFIX}_ARCH}\\InstallPath]
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_PYTHON_VERSION}-${_${_PYTHON_PREFIX}_ARCH2}\\InstallPath]
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_PYTHON_VERSION}\\InstallPath]
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\ContinuumAnalytics\\Anaconda${_PYTHON_VERSION_NO_DOTS}-${_${_PYTHON_PREFIX}_ARCH}\\InstallPath]
       [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\ContinuumAnalytics\\Anaconda${_PYTHON_VERSION_NO_DOTS}-${_${_PYTHON_PREFIX}_ARCH2}\\InstallPath]
       PARENT_SCOPE)
endfunction()


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function (_PYTHON_GET_ABIFLAGS _PGABIFLAGS)
  set (abiflags)
  list (GET _${_PYTHON_PREFIX}_FIND_ABI 0 pydebug)
  list (GET _${_PYTHON_PREFIX}_FIND_ABI 1 pymalloc)
  list (GET _${_PYTHON_PREFIX}_FIND_ABI 2 unicode)

  if (pymalloc STREQUAL "ANY" AND unicode STREQUAL "ANY")
    set (abiflags "mu" "m" "u" "")
  elseif (pymalloc STREQUAL "ANY" AND unicode STREQUAL "ON")
    set (abiflags "mu" "u")
  elseif (pymalloc STREQUAL "ANY" AND unicode STREQUAL "OFF")
    set (abiflags "m" "")
  elseif (pymalloc STREQUAL "ON" AND unicode STREQUAL "ANY")
    set (abiflags "mu" "m")
  elseif (pymalloc STREQUAL "ON" AND unicode STREQUAL "ON")
    set (abiflags "mu")
  elseif (pymalloc STREQUAL "ON" AND unicode STREQUAL "OFF")
    set (abiflags "m")
  elseif (pymalloc STREQUAL "ON" AND unicode STREQUAL "ANY")
    set (abiflags "u" "")
  elseif (pymalloc STREQUAL "OFF" AND unicode STREQUAL "ON")
    set (abiflags "u")
  endif()

  if (pydebug STREQUAL "ON")
    if (abiflags)
      list (TRANSFORM abiflags PREPEND "d")
    else()
      set (abiflags "d")
    endif()
  elseif (pydebug STREQUAL "ANY")
    if (abiflags)
      set (flags "${abiflags}")
      list (TRANSFORM flags PREPEND "d")
      list (APPEND abiflags "${flags}")
    else()
      set (abiflags "" "d")
    endif()
  endif()

  set (${_PGABIFLAGS} "${abiflags}" PARENT_SCOPE)
endfunction()

function (_PYTHON_GET_PATH_SUFFIXES _PYTHON_PGPS_PATH_SUFFIXES)
  cmake_parse_arguments (PARSE_ARGV 1 _PGPS "LIBRARY;INCLUDE" "VERSION" "")

  if (DEFINED _${_PYTHON_PREFIX}_ABIFLAGS)
    set (abi "${_${_PYTHON_PREFIX}_ABIFLAGS}")
  else()
    set (abi "mu" "m" "u" "")
  endif()

  set (path_suffixes)
  if (_PGPS_LIBRARY)
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    if (CMAKE_LIBRARY_ARCHITECTURE)
      list (APPEND path_suffixes lib/${CMAKE_LIBRARY_ARCHITECTURE})
    endif()
    list (APPEND path_suffixes lib libs)

    if (CMAKE_LIBRARY_ARCHITECTURE)
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      set (suffixes "${abi}")
      if (suffixes)
        list (TRANSFORM suffixes PREPEND "lib/python${_PGPS_VERSION}/config-${_PGPS_VERSION}")
        list (TRANSFORM suffixes APPEND "-${CMAKE_LIBRARY_ARCHITECTURE}")
      else()
        set (suffixes "lib/python${_PGPS_VERSION}/config-${_PGPS_VERSION}-${CMAKE_LIBRARY_ARCHITECTURE}")
      endif()
      list (APPEND path_suffixes ${suffixes})
    endif()
    set (suffixes "${abi}")
    if (suffixes)
      list (TRANSFORM suffixes PREPEND "lib/python${_PGPS_VERSION}/config-${_PGPS_VERSION}")
    else()
      set (suffixes "lib/python${_PGPS_VERSION}/config-${_PGPS_VERSION}")
    endif()
    list (APPEND path_suffixes ${suffixes})
  elseif (_PGPS_INCLUDE)
    set (suffixes "${abi}")
    if (suffixes)
      list (TRANSFORM suffixes PREPEND "include/python${_PGPS_VERSION}")
    else()
      set (suffixes "include/python${_PGPS_VERSION}")
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    endif()
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    list (APPEND path_suffixes ${suffixes} include)
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  endif()

  set (${_PYTHON_PGPS_PATH_SUFFIXES} ${path_suffixes} PARENT_SCOPE)
endfunction()

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function (_PYTHON_GET_NAMES _PYTHON_PGN_NAMES)
  cmake_parse_arguments (PARSE_ARGV 1 _PGN "POSIX;EXECUTABLE;CONFIG;LIBRARY;WIN32;DEBUG" "VERSION" "")
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  set (names)

  if (_PGN_WIN32)
    string (REPLACE "." "" _PYTHON_VERSION_NO_DOTS ${_PGN_VERSION})

    set (name python${_PYTHON_VERSION_NO_DOTS})
    if (_PGN_DEBUG)
      string (APPEND name "_d")
    endif()

    list (APPEND names "${name}")
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  endif()
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  if (_PGN_POSIX)
    if (DEFINED _${_PYTHON_PREFIX}_ABIFLAGS)
      set (abi "${_${_PYTHON_PREFIX}_ABIFLAGS}")
    else()
      if (_PGN_EXECUTABLE OR _PGN_CONFIG)
        set (abi "")
      else()
        set (abi "mu" "m" "u" "")
      endif()
    endif()

    if (abi)
      if (_PGN_CONFIG AND DEFINED CMAKE_LIBRARY_ARCHITECTURE)
        set (abinames "${abi}")
        list (TRANSFORM abinames PREPEND "${CMAKE_LIBRARY_ARCHITECTURE}-python${_PGN_VERSION}")
        list (TRANSFORM abinames APPEND "-config")
        list (APPEND names ${abinames})
      endif()
      set (abinames "${abi}")
      list (TRANSFORM abinames PREPEND "python${_PGN_VERSION}")
      if (_PGN_CONFIG)
        list (TRANSFORM abinames APPEND "-config")
      endif()
      list (APPEND names ${abinames})
    else()
      if (_PGN_CONFIG AND DEFINED CMAKE_LIBRARY_ARCHITECTURE)
        set (abinames "${CMAKE_LIBRARY_ARCHITECTURE}-python${_PGN_VERSION}")
      endif()
      list (APPEND abinames "python${_PGN_VERSION}")
      if (_PGN_CONFIG)
        list (TRANSFORM abinames APPEND "-config")
      endif()
      list (APPEND names ${abinames})
    endif()
  endif()

  set (${_PYTHON_PGN_NAMES} ${names} PARENT_SCOPE)
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endfunction()

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function (_PYTHON_GET_CONFIG_VAR _PYTHON_PGCV_VALUE NAME)
  unset (${_PYTHON_PGCV_VALUE} PARENT_SCOPE)

  if (NOT NAME MATCHES "^(PREFIX|ABIFLAGS|CONFIGDIR|INCLUDES|LIBS)$")
    return()
  endif()

  if (_${_PYTHON_PREFIX}_CONFIG)
    set (config_flag "--${NAME}")
    string (TOLOWER "${config_flag}" config_flag)
    execute_process (COMMAND "${_${_PYTHON_PREFIX}_CONFIG}" ${config_flag}
                     RESULT_VARIABLE _result
                     OUTPUT_VARIABLE _values
                     ERROR_QUIET
                     OUTPUT_STRIP_TRAILING_WHITESPACE)
    if (_result)
      unset (_values)
    else()
      if (NAME STREQUAL "INCLUDES")
        # do some clean-up
        string (REGEX MATCHALL "-I[^ ]+" _values "${_values}")
        string (REPLACE "-I" "" _values "${_values}")
        list (REMOVE_DUPLICATES _values)
      endif()
    endif()
  endif()

  if (${_PYTHON_PREFIX}_EXECUTABLE AND NOT CMAKE_CROSSCOMPILING)
    if (NAME STREQUAL "PREFIX")
      execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c "import sys; from distutils import sysconfig; sys.stdout.write(';'.join([sysconfig.PREFIX,sysconfig.EXEC_PREFIX,sysconfig.BASE_EXEC_PREFIX]))"
                       RESULT_VARIABLE _result
                       OUTPUT_VARIABLE _values
                       ERROR_QUIET
                       OUTPUT_STRIP_TRAILING_WHITESPACE)
      if (_result)
        unset (_values)
      else()
        list (REMOVE_DUPLICATES _values)
      endif()
    elseif (NAME STREQUAL "INCLUDES")
      execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c "import sys; from distutils import sysconfig; sys.stdout.write(';'.join([sysconfig.get_python_inc(plat_specific=True),sysconfig.get_python_inc(plat_specific=False)]))"
                       RESULT_VARIABLE _result
                       OUTPUT_VARIABLE _values
                       ERROR_QUIET
                       OUTPUT_STRIP_TRAILING_WHITESPACE)
      if (_result)
        unset (_values)
      endif()
    else()
      set (config_flag "${NAME}")
      if (NAME STREQUAL "CONFIGDIR")
        set (config_flag "LIBPL")
      endif()
      execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c "import sys; from distutils import sysconfig; sys.stdout.write(sysconfig.get_config_var('${config_flag}'))"
                       RESULT_VARIABLE _result
                       OUTPUT_VARIABLE _values
                       ERROR_QUIET
                       OUTPUT_STRIP_TRAILING_WHITESPACE)
      if (_result)
        unset (_values)
      endif()
    endif()
  endif()

  if (NOT _values OR _values STREQUAL "None")
    return()
  endif()

  if (NAME STREQUAL "LIBS")
    # do some clean-up
    string (REGEX MATCHALL "-[l][^ ]+" _values "${_values}")
    # remove elements relative to python library itself
    list (FILTER _values EXCLUDE REGEX "-lpython")
    list (REMOVE_DUPLICATES _values)
  endif()

  set (${_PYTHON_PGCV_VALUE} "${_values}" PARENT_SCOPE)
endfunction()

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function (_PYTHON_VALIDATE_INTERPRETER)
  if (NOT ${_PYTHON_PREFIX}_EXECUTABLE)
    return()
  endif()

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  cmake_parse_arguments (PARSE_ARGV 0 _PVI "EXACT" "" "")
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  if (_PVI_UNPARSED_ARGUMENTS)
    set (expected_version ${_PVI_UNPARSED_ARGUMENTS})
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  else()
    unset (expected_version)
  endif()

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  # validate ABI compatibility
  if (DEFINED _${_PYTHON_PREFIX}_FIND_ABI)
    execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c
                             "import sys; sys.stdout.write(sys.abiflags)"
                     RESULT_VARIABLE result
                     OUTPUT_VARIABLE abi
                     ERROR_QUIET
                     OUTPUT_STRIP_TRAILING_WHITESPACE)
    if (result)
      # assume ABI is not supported
      set (abi "")
    endif()
    if (NOT abi IN_LIST _${_PYTHON_PREFIX}_ABIFLAGS)
      # incompatible ABI
      set_property (CACHE ${_PYTHON_PREFIX}_EXECUTABLE PROPERTY VALUE "${_PYTHON_PREFIX}_EXECUTABLE-NOTFOUND")
      return()
    endif()
  endif()

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  get_filename_component (python_name "${${_PYTHON_PREFIX}_EXECUTABLE}" NAME)

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  if (expected_version AND NOT python_name STREQUAL "python${expected_version}${abi}${CMAKE_EXECUTABLE_SUFFIX}")
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    # executable found must have a specific version
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    execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c
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                             "import sys; sys.stdout.write('.'.join([str(x) for x in sys.version_info[:2]]))"
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                     RESULT_VARIABLE result
                     OUTPUT_VARIABLE version
                     ERROR_QUIET
                     OUTPUT_STRIP_TRAILING_WHITESPACE)
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    if (result OR (_PVI_EXACT AND NOT version VERSION_EQUAL expected_version) OR (version VERSION_LESS expected_version))
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      # interpreter not usable or has wrong major version
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      set_property (CACHE ${_PYTHON_PREFIX}_EXECUTABLE PROPERTY VALUE "${_PYTHON_PREFIX}_EXECUTABLE-NOTFOUND")
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      return()
    endif()
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  else()
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    if (NOT python_name STREQUAL "python${_${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR}${CMAKE_EXECUTABLE_SUFFIX}")
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      # executable found do not have version in name
      # ensure major version is OK
      execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c
                               "import sys; sys.stdout.write(str(sys.version_info[0]))"
                       RESULT_VARIABLE result
                       OUTPUT_VARIABLE version
                       ERROR_QUIET
                       OUTPUT_STRIP_TRAILING_WHITESPACE)
      if (result OR NOT version EQUAL _${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR)
        # interpreter not usable or has wrong major version
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        set_property (CACHE ${_PYTHON_PREFIX}_EXECUTABLE PROPERTY VALUE "${_PYTHON_PREFIX}_EXECUTABLE-NOTFOUND")
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        return()
      endif()
    endif()
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  endif()

  if (CMAKE_SIZEOF_VOID_P AND "Development" IN_LIST ${_PYTHON_PREFIX}_FIND_COMPONENTS
      AND NOT CMAKE_CROSSCOMPILING)
    # In this case, interpreter must have same architecture as environment
    execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c
                             "import sys, struct; sys.stdout.write(str(struct.calcsize(\"P\")))"
                     RESULT_VARIABLE result
                     OUTPUT_VARIABLE size
                     ERROR_QUIET
                     OUTPUT_STRIP_TRAILING_WHITESPACE)
    if (result OR NOT size EQUAL CMAKE_SIZEOF_VOID_P)
      # interpreter not usable or has wrong architecture
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      set_property (CACHE ${_PYTHON_PREFIX}_EXECUTABLE PROPERTY VALUE "${_PYTHON_PREFIX}_EXECUTABLE-NOTFOUND")
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      return()
    endif()
  endif()
endfunction()


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function (_PYTHON_VALIDATE_COMPILER expected_version)
  if (NOT ${_PYTHON_PREFIX}_COMPILER)
    return()
  endif()

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  cmake_parse_arguments (_PVC "EXACT" "" "" ${ARGN})
  if (_PVC_UNPARSED_ARGUMENTS)
    set (major_version FALSE)
    set (expected_version ${_PVC_UNPARSED_ARGUMENTS})
  else()
    set (major_version TRUE)
    set (expected_version ${_${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR})
    set (_PVC_EXACT TRUE)
  endif()

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  # retrieve python environment version from compiler
  set (working_dir "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/PythonCompilerVersion.dir")
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  if (major_version)
    # check only major version
    file (WRITE "${working_dir}/version.py" "import sys; sys.stdout.write(str(sys.version_info[0]))")
  else()
    file (WRITE "${working_dir}/version.py" "import sys; sys.stdout.write('.'.join([str(x) for x in sys.version_info[:2]]))\n")
  endif()
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  execute_process (COMMAND "${${_PYTHON_PREFIX}_COMPILER}" /target:exe /embed "${working_dir}/version.py"
                   WORKING_DIRECTORY "${working_dir}"
                   OUTPUT_QUIET
                   ERROR_QUIET
                   OUTPUT_STRIP_TRAILING_WHITESPACE)
  execute_process (COMMAND "${working_dir}/version"
                   WORKING_DIRECTORY "${working_dir}"
                   RESULT_VARIABLE result
                   OUTPUT_VARIABLE version
                   ERROR_QUIET)
  file (REMOVE_RECURSE "${_${_PYTHON_PREFIX}_VERSION_DIR}")

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  if (result OR (_PVC_EXACT AND NOT version VERSION_EQUAL expected_version) OR (version VERSION_LESS expected_version))
    # Compiler not usable or has wrong version
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    set_property (CACHE ${_PYTHON_PREFIX}_COMPILER PROPERTY VALUE "${_PYTHON_PREFIX}_COMPILER-NOTFOUND")
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  endif()
endfunction()


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function (_PYTHON_FIND_RUNTIME_LIBRARY _PYTHON_LIB)
  string (REPLACE "_RUNTIME" "" _PYTHON_LIB "${_PYTHON_LIB}")
  # look at runtime part on systems supporting it
  if (CMAKE_SYSTEM_NAME STREQUAL "Windows" OR
      (CMAKE_SYSTEM_NAME MATCHES "MSYS|CYGWIN"
        AND ${_PYTHON_LIB} MATCHES "${CMAKE_IMPORT_LIBRARY_SUFFIX}$"))
    set (CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_SHARED_LIBRARY_SUFFIX})
    # MSYS has a special syntax for runtime libraries
    if (CMAKE_SYSTEM_NAME MATCHES "MSYS")
      list (APPEND CMAKE_FIND_LIBRARY_PREFIXES "msys-")
    endif()
    find_library (${ARGV})
  endif()
endfunction()


function (_PYTHON_SET_LIBRARY_DIRS _PYTHON_SLD_RESULT)
  unset (_PYTHON_DIRS)
  set (_PYTHON_LIBS ${ARGV})
  list (REMOVE_AT _PYTHON_LIBS 0)
  foreach (_PYTHON_LIB IN LISTS _PYTHON_LIBS)
    if (${_PYTHON_LIB})
      get_filename_component (_PYTHON_DIR "${${_PYTHON_LIB}}" DIRECTORY)
      list (APPEND _PYTHON_DIRS "${_PYTHON_DIR}")
    endif()
  endforeach()
  if (_PYTHON_DIRS)
    list (REMOVE_DUPLICATES _PYTHON_DIRS)
  endif()
  set (${_PYTHON_SLD_RESULT} ${_PYTHON_DIRS} PARENT_SCOPE)
endfunction()


# If major version is specified, it must be the same as internal major version
if (DEFINED ${_PYTHON_PREFIX}_FIND_VERSION_MAJOR
    AND NOT ${_PYTHON_PREFIX}_FIND_VERSION_MAJOR VERSION_EQUAL _${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR)
  _python_display_failure ("Could NOT find ${_PYTHON_PREFIX}: Wrong major version specified is \"${${_PYTHON_PREFIX}_FIND_VERSION_MAJOR}\", but expected major version is \"${_${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR}\"")
endif()


# handle components
if (NOT ${_PYTHON_PREFIX}_FIND_COMPONENTS)
  set (${_PYTHON_PREFIX}_FIND_COMPONENTS Interpreter)
  set (${_PYTHON_PREFIX}_FIND_REQUIRED_Interpreter TRUE)
endif()
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if ("NumPy" IN_LIST ${_PYTHON_PREFIX}_FIND_COMPONENTS)
  list (APPEND ${_PYTHON_PREFIX}_FIND_COMPONENTS "Interpreter" "Development")
  list (REMOVE_DUPLICATES ${_PYTHON_PREFIX}_FIND_COMPONENTS)
endif()
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foreach (_${_PYTHON_PREFIX}_COMPONENT IN LISTS ${_PYTHON_PREFIX}_FIND_COMPONENTS)
  set (${_PYTHON_PREFIX}_${_${_PYTHON_PREFIX}_COMPONENT}_FOUND FALSE)
endforeach()
unset (_${_PYTHON_PREFIX}_FIND_VERSIONS)

# Set versions to search
## default: search any version
set (_${_PYTHON_PREFIX}_FIND_VERSIONS ${_${_PYTHON_PREFIX}_VERSIONS})

if (${_PYTHON_PREFIX}_FIND_VERSION_COUNT GREATER 1)
  if (${_PYTHON_PREFIX}_FIND_VERSION_EXACT)
    set (_${_PYTHON_PREFIX}_FIND_VERSIONS ${${_PYTHON_PREFIX}_FIND_VERSION_MAJOR}.${${_PYTHON_PREFIX}_FIND_VERSION_MINOR})
  else()
    unset (_${_PYTHON_PREFIX}_FIND_VERSIONS)
    # add all compatible versions
    foreach (_${_PYTHON_PREFIX}_VERSION IN LISTS _${_PYTHON_PREFIX}_VERSIONS)
      if (_${_PYTHON_PREFIX}_VERSION VERSION_GREATER_EQUAL ${_PYTHON_PREFIX}_FIND_VERSION)
        list (APPEND _${_PYTHON_PREFIX}_FIND_VERSIONS ${_${_PYTHON_PREFIX}_VERSION})
      endif()
    endforeach()
  endif()
endif()

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# Set ABIs to search
## default: search any ABI
if (_${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR VERSION_LESS 3)
  # ABI not supported
  unset (_${_PYTHON_PREFIX}_FIND_ABI)
  set (_${_PYTHON_PREFIX}_ABIFLAGS "")
else()
  unset (_${_PYTHON_PREFIX}_FIND_ABI)
  unset (_${_PYTHON_PREFIX}_ABIFLAGS)
  if (DEFINED ${_PYTHON_PREFIX}_FIND_ABI)
    # normalization
    string (TOUPPER "${${_PYTHON_PREFIX}_FIND_ABI}" _${_PYTHON_PREFIX}_FIND_ABI)
    list (TRANSFORM _${_PYTHON_PREFIX}_FIND_ABI REPLACE "^(TRUE|Y(ES)?|1)$" "ON")
    list (TRANSFORM _${_PYTHON_PREFIX}_FIND_ABI REPLACE "^(FALSE|N(O)?|0)$" "OFF")
    if (NOT _${_PYTHON_PREFIX}_FIND_ABI MATCHES "^(ON|OFF|ANY);(ON|OFF|ANY);(ON|OFF|ANY)$")
      message (AUTHOR_WARNING "Find${_PYTHON_PREFIX}: ${${_PYTHON_PREFIX}_FIND_ABI}: invalid value for '${_PYTHON_PREFIX}_FIND_ABI'. Ignore it")
      unset (_${_PYTHON_PREFIX}_FIND_ABI)
    endif()
    _python_get_abiflags (_${_PYTHON_PREFIX}_ABIFLAGS)
  endif()
endif()

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# Define lookup strategy
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if (_${_PYTHON_PREFIX}_LOOKUP_POLICY STREQUAL "NEW")
  set (_${_PYTHON_PREFIX}_FIND_STRATEGY "LOCATION")
else()
  set (_${_PYTHON_PREFIX}_FIND_STRATEGY "VERSION")
endif()
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if (DEFINED ${_PYTHON_PREFIX}_FIND_STRATEGY)
  if (NOT ${_PYTHON_PREFIX}_FIND_STRATEGY MATCHES "^(VERSION|LOCATION)$")
    message (AUTHOR_WARNING "Find${_PYTHON_PREFIX}: ${${_PYTHON_PREFIX}_FIND_STRATEGY}: invalid value for '${_PYTHON_PREFIX}_FIND_STRATEGY'. 'VERSION' or 'LOCATION' expected.")
    set (_${_PYTHON_PREFIX}_FIND_STRATEGY "VERSION")
  else()
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    set (_${_PYTHON_PREFIX}_FIND_STRATEGY "${${_PYTHON_PREFIX}_FIND_STRATEGY}")
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  endif()
endif()

557
# Python and Anaconda distributions: define which architectures can be used
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if (CMAKE_SIZEOF_VOID_P)
  # In this case, search only for 64bit or 32bit
  math (EXPR _${_PYTHON_PREFIX}_ARCH "${CMAKE_SIZEOF_VOID_P} * 8")
  set (_${_PYTHON_PREFIX}_ARCH2 ${_${_PYTHON_PREFIX}_ARCH})
else()
  # architecture unknown, search for both 64bit and 32bit
  set (_${_PYTHON_PREFIX}_ARCH 64)
  set (_${_PYTHON_PREFIX}_ARCH2 32)
endif()

# IronPython support
if (CMAKE_SIZEOF_VOID_P)
  # In this case, search only for 64bit or 32bit
  math (EXPR _${_PYTHON_PREFIX}_ARCH "${CMAKE_SIZEOF_VOID_P} * 8")
  set (_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES ipy${_${_PYTHON_PREFIX}_ARCH} ipy)
else()
  # architecture unknown, search for natural interpreter
  set (_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES ipy)
endif()
577
set (_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES net45 net40)
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579

# Apple frameworks handling
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_python_find_frameworks ()

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set (_${_PYTHON_PREFIX}_FIND_FRAMEWORK "FIRST")

if (DEFINED ${_PYTHON_PREFIX}_FIND_FRAMEWORK)
  if (NOT ${_PYTHON_PREFIX}_FIND_FRAMEWORK MATCHES "^(FIRST|LAST|NEVER)$")
    message (AUTHOR_WARNING "Find${_PYTHON_PREFIX}: ${${_PYTHON_PREFIX}_FIND_FRAMEWORK}: invalid value for '${_PYTHON_PREFIX}_FIND_FRAMEWORK'. 'FIRST', 'LAST' or 'NEVER' expected. 'FIRST' will be used instead.")
  else()
    set (_${_PYTHON_PREFIX}_FIND_FRAMEWORK ${${_PYTHON_PREFIX}_FIND_FRAMEWORK})
  endif()
elseif (DEFINED CMAKE_FIND_FRAMEWORK)
  if (CMAKE_FIND_FRAMEWORK STREQUAL "ONLY")
    message (AUTHOR_WARNING "Find${_PYTHON_PREFIX}: CMAKE_FIND_FRAMEWORK: 'ONLY' value is not supported. 'FIRST' will be used instead.")
  elseif (NOT CMAKE_FIND_FRAMEWORK MATCHES "^(FIRST|LAST|NEVER)$")
    message (AUTHOR_WARNING "Find${_PYTHON_PREFIX}: ${CMAKE_FIND_FRAMEWORK}: invalid value for 'CMAKE_FIND_FRAMEWORK'. 'FIRST', 'LAST' or 'NEVER' expected. 'FIRST' will be used instead.")
  else()
    set (_${_PYTHON_PREFIX}_FIND_FRAMEWORK ${CMAKE_FIND_FRAMEWORK})
  endif()
endif()

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# Save CMAKE_FIND_APPBUNDLE
if (DEFINED CMAKE_FIND_APPBUNDLE)
  set (_${_PYTHON_PREFIX}_CMAKE_FIND_APPBUNDLE ${CMAKE_FIND_APPBUNDLE})
else()
  unset (_${_PYTHON_PREFIX}_CMAKE_FIND_APPBUNDLE)
endif()
# To avoid app bundle lookup
set (CMAKE_FIND_APPBUNDLE "NEVER")
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# Save CMAKE_FIND_FRAMEWORK
if (DEFINED CMAKE_FIND_FRAMEWORK)
  set (_${_PYTHON_PREFIX}_CMAKE_FIND_FRAMEWORK ${CMAKE_FIND_FRAMEWORK})
else()
  unset (_${_PYTHON_PREFIX}_CMAKE_FIND_FRAMEWORK)
endif()
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# To avoid framework lookup
set (CMAKE_FIND_FRAMEWORK "NEVER")
617

618
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# Windows Registry handling
if (DEFINED ${_PYTHON_PREFIX}_FIND_REGISTRY)
  if (NOT ${_PYTHON_PREFIX}_FIND_REGISTRY MATCHES "^(FIRST|LAST|NEVER)$")
621
    message (AUTHOR_WARNING "Find${_PYTHON_PREFIX}: ${${_PYTHON_PREFIX}_FIND_REGISTRY}: invalid value for '${_PYTHON_PREFIX}_FIND_REGISTRY'. 'FIRST', 'LAST' or 'NEVER' expected. 'FIRST' will be used instead.")
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    set (_${_PYTHON_PREFIX}_FIND_REGISTRY "FIRST")
  else()
    set (_${_PYTHON_PREFIX}_FIND_REGISTRY ${${_PYTHON_PREFIX}_FIND_REGISTRY})
  endif()
else()
  set (_${_PYTHON_PREFIX}_FIND_REGISTRY "FIRST")
endif()

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# virtual environments handling
if (DEFINED ENV{VIRTUAL_ENV})
  if (DEFINED ${_PYTHON_PREFIX}_FIND_VIRTUALENV)
    if (NOT ${_PYTHON_PREFIX}_FIND_VIRTUALENV MATCHES "^(FIRST|ONLY|STANDARD)$")
634
      message (AUTHOR_WARNING "Find${_PYTHON_PREFIX}: ${${_PYTHON_PREFIX}_FIND_VIRTUALENV}: invalid value for '${_PYTHON_PREFIX}_FIND_VIRTUALENV'. 'FIRST', 'ONLY' or 'STANDARD' expected. 'FIRST' will be used instead.")
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      set (_${_PYTHON_PREFIX}_FIND_VIRTUALENV "FIRST")
    else()
      set (_${_PYTHON_PREFIX}_FIND_VIRTUALENV ${${_PYTHON_PREFIX}_FIND_VIRTUALENV})
    endif()
  else()
    set (_${_PYTHON_PREFIX}_FIND_VIRTUALENV FIRST)
  endif()
else()
  set (_${_PYTHON_PREFIX}_FIND_VIRTUALENV STANDARD)
endif()

646
647

unset (_${_PYTHON_PREFIX}_REQUIRED_VARS)
648
unset (_${_PYTHON_PREFIX}_CACHED_VARS)
649
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652


# first step, search for the interpreter
if ("Interpreter" IN_LIST ${_PYTHON_PREFIX}_FIND_COMPONENTS)
653
  list (APPEND _${_PYTHON_PREFIX}_CACHED_VARS ${_PYTHON_PREFIX}_EXECUTABLE)
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  if (${_PYTHON_PREFIX}_FIND_REQUIRED_Interpreter)
    list (APPEND _${_PYTHON_PREFIX}_REQUIRED_VARS ${_PYTHON_PREFIX}_EXECUTABLE)
  endif()

  set (_${_PYTHON_PREFIX}_HINTS "${${_PYTHON_PREFIX}_ROOT_DIR}" ENV ${_PYTHON_PREFIX}_ROOT_DIR)

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  if (_${_PYTHON_PREFIX}_FIND_STRATEGY STREQUAL "LOCATION")
    unset (_${_PYTHON_PREFIX}_NAMES)
    unset (_${_PYTHON_PREFIX}_FRAMEWORK_PATHS)
    unset (_${_PYTHON_PREFIX}_REGISTRY_PATHS)

    foreach (_${_PYTHON_PREFIX}_VERSION IN LISTS _${_PYTHON_PREFIX}_FIND_VERSIONS)
      # build all executable names
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668
      _python_get_names (_${_PYTHON_PREFIX}_VERSION_NAMES VERSION ${_${_PYTHON_PREFIX}_VERSION} POSIX EXECUTABLE)
      list (APPEND _${_PYTHON_PREFIX}_NAMES ${_${_PYTHON_PREFIX}_VERSION_NAMES})
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      # Framework Paths
      _python_get_frameworks (_${_PYTHON_PREFIX}_VERSION_PATHS ${_${_PYTHON_PREFIX}_VERSION})
      list (APPEND _${_PYTHON_PREFIX}_FRAMEWORK_PATHS ${_${_PYTHON_PREFIX}_VERSION_PATHS})

      # Registry Paths
      _python_get_registries (_${_PYTHON_PREFIX}_VERSION_PATHS ${_${_PYTHON_PREFIX}_VERSION})
      list (APPEND _${_PYTHON_PREFIX}_REGISTRY_PATHS ${_${_PYTHON_PREFIX}_VERSION_PATHS}
                   [HKEY_LOCAL_MACHINE\\SOFTWARE\\IronPython\\${_${_PYTHON_PREFIX}_VERSION}\\InstallPath])
    endforeach()
    list (APPEND _${_PYTHON_PREFIX}_NAMES python${_${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR} python)

    while (TRUE)
      # Virtual environments handling
      if (_${_PYTHON_PREFIX}_FIND_VIRTUALENV MATCHES "^(FIRST|ONLY)$")
        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                      NAMES_PER_DIR
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS ENV VIRTUAL_ENV
                      PATH_SUFFIXES bin Scripts
                      NO_CMAKE_PATH
                      NO_CMAKE_ENVIRONMENT_PATH
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
694

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        _python_validate_interpreter (${${_PYTHON_PREFIX}_FIND_VERSION})
        if (${_PYTHON_PREFIX}_EXECUTABLE)
          break()
        endif()
        if (NOT _${_PYTHON_PREFIX}_FIND_VIRTUALENV STREQUAL "ONLY")
          break()
        endif()
      endif()
703

704
      # Apple frameworks handling
705
      if (CMAKE_HOST_APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "FIRST")
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        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                      NAMES_PER_DIR
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
                      PATH_SUFFIXES bin
                      NO_CMAKE_PATH
                      NO_CMAKE_ENVIRONMENT_PATH
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
        _python_validate_interpreter (${${_PYTHON_PREFIX}_FIND_VERSION})
        if (${_PYTHON_PREFIX}_EXECUTABLE)
          break()
        endif()
      endif()
      # Windows registry
722
      if (CMAKE_HOST_WIN32 AND _${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "FIRST")
723
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        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                            ${_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES}
                      NAMES_PER_DIR
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS ${_${_PYTHON_PREFIX}_REGISTRY_PATHS}
                      PATH_SUFFIXES bin ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
        _python_validate_interpreter (${${_PYTHON_PREFIX}_FIND_VERSION})
        if (${_PYTHON_PREFIX}_EXECUTABLE)
          break()
        endif()
      endif()

738
      # try using HINTS
739
      find_program (${_PYTHON_PREFIX}_EXECUTABLE
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741
                    NAMES ${_${_PYTHON_PREFIX}_NAMES}
                          ${_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES}
742
743
                    NAMES_PER_DIR
                    HINTS ${_${_PYTHON_PREFIX}_HINTS}
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755
                    PATH_SUFFIXES bin ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                    NO_SYSTEM_ENVIRONMENT_PATH
                    NO_CMAKE_SYSTEM_PATH)
      _python_validate_interpreter (${${_PYTHON_PREFIX}_FIND_VERSION})
      if (${_PYTHON_PREFIX}_EXECUTABLE)
        break()
      endif()
      # try using standard paths
      find_program (${_PYTHON_PREFIX}_EXECUTABLE
                    NAMES ${_${_PYTHON_PREFIX}_NAMES}
                          ${_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES}
                    NAMES_PER_DIR
756
757
                    PATH_SUFFIXES bin ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES})
      _python_validate_interpreter (${${_PYTHON_PREFIX}_FIND_VERSION})
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760
      if (${_PYTHON_PREFIX}_EXECUTABLE)
        break()
      endif()
761
762

      # Apple frameworks handling
763
      if (CMAKE_HOST_APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "LAST")
764
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        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                      NAMES_PER_DIR
                      PATHS ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
                      PATH_SUFFIXES bin
                      NO_DEFAULT_PATH)
        _python_validate_interpreter (${${_PYTHON_PREFIX}_FIND_VERSION})
        if (${_PYTHON_PREFIX}_EXECUTABLE)
          break()
        endif()
      endif()
      # Windows registry
776
      if (CMAKE_HOST_WIN32 AND _${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "LAST")
777
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779
780
781
782
783
784
785
786
787
        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                            ${_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES}
                      NAMES_PER_DIR
                      PATHS ${_${_PYTHON_PREFIX}_REGISTRY_PATHS}
                      PATH_SUFFIXES bin ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                      NO_DEFAULT_PATH)
        _python_validate_interpreter (${${_PYTHON_PREFIX}_FIND_VERSION})
        if (${_PYTHON_PREFIX}_EXECUTABLE)
          break()
        endif()
788
789
      endif()

790
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794
      break()
    endwhile()
  else()
    # look-up for various versions and locations
    foreach (_${_PYTHON_PREFIX}_VERSION IN LISTS _${_PYTHON_PREFIX}_FIND_VERSIONS)
795
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797
      _python_get_names (_${_PYTHON_PREFIX}_NAMES VERSION ${_${_PYTHON_PREFIX}_VERSION} POSIX EXECUTABLE)
      list (APPEND _${_PYTHON_PREFIX}_NAMES python${_${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR}
                                            python)
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815
816
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821
822
823
824

      _python_get_frameworks (_${_PYTHON_PREFIX}_FRAMEWORK_PATHS ${_${_PYTHON_PREFIX}_VERSION})
      _python_get_registries (_${_PYTHON_PREFIX}_REGISTRY_PATHS ${_${_PYTHON_PREFIX}_VERSION})

      # Virtual environments handling
      if (_${_PYTHON_PREFIX}_FIND_VIRTUALENV MATCHES "^(FIRST|ONLY)$")
        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                      NAMES_PER_DIR
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS ENV VIRTUAL_ENV
                      PATH_SUFFIXES bin Scripts
                      NO_CMAKE_PATH
                      NO_CMAKE_ENVIRONMENT_PATH
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)

        _python_validate_interpreter (${_${_PYTHON_PREFIX}_VERSION} EXACT)
        if (${_PYTHON_PREFIX}_EXECUTABLE)
          break()
        endif()
        if (_${_PYTHON_PREFIX}_FIND_VIRTUALENV STREQUAL "ONLY")
          continue()
        endif()
      endif()

      # Apple frameworks handling
825
      if (CMAKE_HOST_APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "FIRST")
826
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831
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833
834
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836
        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                      NAMES_PER_DIR
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
                      PATH_SUFFIXES bin
                      NO_CMAKE_PATH
                      NO_CMAKE_ENVIRONMENT_PATH
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
      endif()
837

838
      # Windows registry
839
      if (CMAKE_HOST_WIN32 AND _${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "FIRST")
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                            ${_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES}
                      NAMES_PER_DIR
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS ${_${_PYTHON_PREFIX}_REGISTRY_PATHS}
                            [HKEY_LOCAL_MACHINE\\SOFTWARE\\IronPython\\${_${_PYTHON_PREFIX}_VERSION}\\InstallPath]
                      PATH_SUFFIXES bin ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
      endif()
      _python_validate_interpreter (${_${_PYTHON_PREFIX}_VERSION} EXACT)
      if (${_PYTHON_PREFIX}_EXECUTABLE)
        break()
      endif()

      # try using HINTS
857
      find_program (${_PYTHON_PREFIX}_EXECUTABLE
858
                    NAMES ${_${_PYTHON_PREFIX}_NAMES}
859
860
861
                          ${_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES}
                    NAMES_PER_DIR
                    HINTS ${_${_PYTHON_PREFIX}_HINTS}
862
                    PATH_SUFFIXES bin ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
863
864
                    NO_SYSTEM_ENVIRONMENT_PATH
                    NO_CMAKE_SYSTEM_PATH)
865
866
867
868
869
870
871
872
873
874
      _python_validate_interpreter (${_${_PYTHON_PREFIX}_VERSION} EXACT)
      if (${_PYTHON_PREFIX}_EXECUTABLE)
        break()
      endif()
      # try using standard paths.
      # NAMES_PER_DIR is not defined on purpose to have a chance to find
      # expected version.
      # For example, typical systems have 'python' for version 2.* and 'python3'
      # for version 3.*. So looking for names per dir will find, potentially,
      # systematically 'python' (i.e. version 2) even if version 3 is searched.
875
      if (CMAKE_HOST_WIN32)
876
        find_program (${_PYTHON_PREFIX}_EXECUTABLE
877
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
878
879
880
881
                            python
                            ${_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES})
      else()
        find_program (${_PYTHON_PREFIX}_EXECUTABLE
882
                      NAMES ${_${_PYTHON_PREFIX}_NAMES})
883
884
885
886
887
      endif()
      _python_validate_interpreter (${_${_PYTHON_PREFIX}_VERSION} EXACT)
      if (${_PYTHON_PREFIX}_EXECUTABLE)
        break()
      endif()
888

889
      # Apple frameworks handling
890
      if (CMAKE_HOST_APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "LAST")
891
892
893
894
895
896
897
        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                      NAMES_PER_DIR
                      PATHS ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
                      PATH_SUFFIXES bin
                      NO_DEFAULT_PATH)
      endif()
898

899
      # Windows registry
900
      if (CMAKE_HOST_WIN32 AND _${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "LAST")
901
902
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        find_program (${_PYTHON_PREFIX}_EXECUTABLE
                      NAMES ${_${_PYTHON_PREFIX}_NAMES}
                            ${_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES}
                      NAMES_PER_DIR
                      PATHS ${_${_PYTHON_PREFIX}_REGISTRY_PATHS}
                            [HKEY_LOCAL_MACHINE\\SOFTWARE\\IronPython\\${_${_PYTHON_PREFIX}_VERSION}\\InstallPath]
                      PATH_SUFFIXES bin ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                      NO_DEFAULT_PATH)
      endif()

      _python_validate_interpreter (${_${_PYTHON_PREFIX}_VERSION} EXACT)
      if (${_PYTHON_PREFIX}_EXECUTABLE)
        break()
      endif()
    endforeach()
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    if (NOT ${_PYTHON_PREFIX}_EXECUTABLE AND
        NOT _${_PYTHON_PREFIX}_FIND_VIRTUALENV STREQUAL "ONLY")
      # No specific version found. Retry with generic names and standard paths.
      # NAMES_PER_DIR is not defined on purpose to have a chance to find
      # expected version.
      # For example, typical systems have 'python' for version 2.* and 'python3'
      # for version 3.*. So looking for names per dir will find, potentially,
      # systematically 'python' (i.e. version 2) even if version 3 is searched.
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      find_program (${_PYTHON_PREFIX}_EXECUTABLE
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                    NAMES python${_${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR}
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                          python
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                          ${_${_PYTHON_PREFIX}_IRON_PYTHON_NAMES})
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      _python_validate_interpreter ()
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    endif()
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  endif()
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  # retrieve exact version of executable found
  if (${_PYTHON_PREFIX}_EXECUTABLE)
    execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c
                             "import sys; sys.stdout.write('.'.join([str(x) for x in sys.version_info[:3]]))"
                     RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                     OUTPUT_VARIABLE ${_PYTHON_PREFIX}_VERSION
                     ERROR_QUIET
                     OUTPUT_STRIP_TRAILING_WHITESPACE)
    if (NOT _${_PYTHON_PREFIX}_RESULT)
      string (REGEX MATCHALL "[0-9]+" _${_PYTHON_PREFIX}_VERSIONS "${${_PYTHON_PREFIX}_VERSION}")
      list (GET _${_PYTHON_PREFIX}_VERSIONS 0 ${_PYTHON_PREFIX}_VERSION_MAJOR)
      list (GET _${_PYTHON_PREFIX}_VERSIONS 1 ${_PYTHON_PREFIX}_VERSION_MINOR)
      list (GET _${_PYTHON_PREFIX}_VERSIONS 2 ${_PYTHON_PREFIX}_VERSION_PATCH)
    else()
      # Interpreter is not usable
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      set_property (CACHE ${_PYTHON_PREFIX}_EXECUTABLE PROPERTY VALUE "${_PYTHON_PREFIX}_EXECUTABLE-NOTFOUND")
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      unset (${_PYTHON_PREFIX}_VERSION)
    endif()
  endif()

  if (${_PYTHON_PREFIX}_EXECUTABLE
      AND ${_PYTHON_PREFIX}_VERSION_MAJOR VERSION_EQUAL _${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR)
    set (${_PYTHON_PREFIX}_Interpreter_FOUND TRUE)
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    # Use interpreter version and ABI for future searches to ensure consistency
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    set (_${_PYTHON_PREFIX}_FIND_VERSIONS ${${_PYTHON_PREFIX}_VERSION_MAJOR}.${${_PYTHON_PREFIX}_VERSION_MINOR})
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    execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c "import sys; sys.stdout.write(sys.abiflags)"
                     RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                     OUTPUT_VARIABLE _${_PYTHON_PREFIX}_ABIFLAGS
                     ERROR_QUIET
                     OUTPUT_STRIP_TRAILING_WHITESPACE)
    if (_${_PYTHON_PREFIX}_RESULT)
      # assunme ABI is not supported
      set (_${_PYTHON_PREFIX}_ABIFLAGS "")
    endif()
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  endif()

  if (${_PYTHON_PREFIX}_Interpreter_FOUND)
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    if (NOT CMAKE_SIZEOF_VOID_P)
      # determine interpreter architecture
      execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c "import sys; print(sys.maxsize > 2**32)"
                       RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                       OUTPUT_VARIABLE ${_PYTHON_PREFIX}_IS64BIT
                       ERROR_VARIABLE ${_PYTHON_PREFIX}_IS64BIT)
      if (NOT _${_PYTHON_PREFIX}_RESULT)
        if (${_PYTHON_PREFIX}_IS64BIT)
          set (_${_PYTHON_PREFIX}_ARCH 64)
          set (_${_PYTHON_PREFIX}_ARCH2 64)
        else()
          set (_${_PYTHON_PREFIX}_ARCH 32)
          set (_${_PYTHON_PREFIX}_ARCH2 32)
        endif()
      endif()
    endif()

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    # retrieve interpreter identity
    execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -V
                     RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                     OUTPUT_VARIABLE ${_PYTHON_PREFIX}_INTERPRETER_ID
                     ERROR_VARIABLE ${_PYTHON_PREFIX}_INTERPRETER_ID)
    if (NOT _${_PYTHON_PREFIX}_RESULT)
      if (${_PYTHON_PREFIX}_INTERPRETER_ID MATCHES "Anaconda")
        set (${_PYTHON_PREFIX}_INTERPRETER_ID "Anaconda")
      elseif (${_PYTHON_PREFIX}_INTERPRETER_ID MATCHES "Enthought")
        set (${_PYTHON_PREFIX}_INTERPRETER_ID "Canopy")
      else()
        string (REGEX REPLACE "^([^ ]+).*" "\\1" ${_PYTHON_PREFIX}_INTERPRETER_ID "${${_PYTHON_PREFIX}_INTERPRETER_ID}")
        if (${_PYTHON_PREFIX}_INTERPRETER_ID STREQUAL "Python")
          # try to get a more precise ID
          execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c "import sys; print(sys.copyright)"
                           RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                           OUTPUT_VARIABLE ${_PYTHON_PREFIX}_COPYRIGHT
                           ERROR_QUIET)
          if (${_PYTHON_PREFIX}_COPYRIGHT MATCHES "ActiveState")
            set (${_PYTHON_PREFIX}_INTERPRETER_ID "ActivePython")
          endif()
        endif()
      endif()
    else()
      set (${_PYTHON_PREFIX}_INTERPRETER_ID Python)
    endif()
  else()
    unset (${_PYTHON_PREFIX}_INTERPRETER_ID)
  endif()

  # retrieve various package installation directories
  execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c "import sys; from distutils import sysconfig;sys.stdout.write(';'.join([sysconfig.get_python_lib(plat_specific=False,standard_lib=True),sysconfig.get_python_lib(plat_specific=True,standard_lib=True),sysconfig.get_python_lib(plat_specific=False,standard_lib=False),sysconfig.get_python_lib(plat_specific=True,standard_lib=False)]))"

                   RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                   OUTPUT_VARIABLE _${_PYTHON_PREFIX}_LIBPATHS
                   ERROR_QUIET)
  if (NOT _${_PYTHON_PREFIX}_RESULT)
    list (GET _${_PYTHON_PREFIX}_LIBPATHS 0 ${_PYTHON_PREFIX}_STDLIB)
    list (GET _${_PYTHON_PREFIX}_LIBPATHS 1 ${_PYTHON_PREFIX}_STDARCH)
    list (GET _${_PYTHON_PREFIX}_LIBPATHS 2 ${_PYTHON_PREFIX}_SITELIB)
    list (GET _${_PYTHON_PREFIX}_LIBPATHS 3 ${_PYTHON_PREFIX}_SITEARCH)
  else()
    unset (${_PYTHON_PREFIX}_STDLIB)
    unset (${_PYTHON_PREFIX}_STDARCH)
    unset (${_PYTHON_PREFIX}_SITELIB)
    unset (${_PYTHON_PREFIX}_SITEARCH)
  endif()

  mark_as_advanced (${_PYTHON_PREFIX}_EXECUTABLE)
endif()


# second step, search for compiler (IronPython)
if ("Compiler" IN_LIST ${_PYTHON_PREFIX}_FIND_COMPONENTS)
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  list (APPEND _${_PYTHON_PREFIX}_CACHED_VARS ${_PYTHON_PREFIX}_COMPILER)
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  if (${_PYTHON_PREFIX}_FIND_REQUIRED_Compiler)
    list (APPEND _${_PYTHON_PREFIX}_REQUIRED_VARS ${_PYTHON_PREFIX}_COMPILER)
  endif()

  # IronPython specific artifacts
  # If IronPython interpreter is found, use its path
  unset (_${_PYTHON_PREFIX}_IRON_ROOT)
  if (${_PYTHON_PREFIX}_Interpreter_FOUND AND ${_PYTHON_PREFIX}_INTERPRETER_ID STREQUAL "IronPython")
    get_filename_component (_${_PYTHON_PREFIX}_IRON_ROOT "${${_PYTHON_PREFIX}_EXECUTABLE}" DIRECTORY)
  endif()

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  if (_${_PYTHON_PREFIX}_FIND_STRATEGY STREQUAL "LOCATION")
    set (_${_PYTHON_PREFIX}_REGISTRY_PATHS)

    foreach (_${_PYTHON_PREFIX}_VERSION IN LISTS _${_PYTHON_PREFIX}_FIND_VERSIONS)
      # Registry Paths
      list (APPEND _${_PYTHON_PREFIX}_REGISTRY_PATHS
                   [HKEY_LOCAL_MACHINE\\SOFTWARE\\IronPython\\${_${_PYTHON_PREFIX}_VERSION}\\InstallPath])
    endforeach()

    while (TRUE)
      if (_${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "FIRST")
        find_program (${_PYTHON_PREFIX}_COMPILER
                      NAMES ipyc
                      HINTS ${_${_PYTHON_PREFIX}_IRON_ROOT} ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS ${_${_PYTHON_PREFIX}_REGISTRY_PATHS}
                      PATH_SUFFIXES ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
        _python_validate_compiler (${${_PYTHON_PREFIX}_FIND_VERSION})
        if (${_PYTHON_PREFIX}_COMPILER)
          break()
        endif()
      endif()

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      find_program (${_PYTHON_PREFIX}_COMPILER
                    NAMES ipyc
                    HINTS ${_${_PYTHON_PREFIX}_IRON_ROOT} ${_${_PYTHON_PREFIX}_HINTS}
                    PATH_SUFFIXES ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                    NO_SYSTEM_ENVIRONMENT_PATH
                    NO_CMAKE_SYSTEM_PATH)
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      _python_validate_compiler (${${_PYTHON_PREFIX}_FIND_VERSION})
      if (${_PYTHON_PREFIX}_COMPILER)
        break()
      endif()
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      if (_${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "LAST")
        find_program (${_PYTHON_PREFIX}_COMPILER
                      NAMES ipyc
                      PATHS ${_${_PYTHON_PREFIX}_REGISTRY_PATHS}
                      PATH_SUFFIXES ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                      NO_DEFAULT_PATH)
      endif()

      break()
    endwhile()
  else()
    # try using root dir and registry
    foreach (_${_PYTHON_PREFIX}_VERSION IN LISTS _${_PYTHON_PREFIX}_FIND_VERSIONS)
      if (_${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "FIRST")
        find_program (${_PYTHON_PREFIX}_COMPILER
                      NAMES ipyc
                      HINTS ${_${_PYTHON_PREFIX}_IRON_ROOT} ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS [HKEY_LOCAL_MACHINE\\SOFTWARE\\IronPython\\${_${_PYTHON_PREFIX}_VERSION}\\InstallPath]
                      PATH_SUFFIXES ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
        _python_validate_compiler (${_${_PYTHON_PREFIX}_VERSION} EXACT)
        if (${_PYTHON_PREFIX}_COMPILER)
          break()
        endif()
      endif()
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      find_program (${_PYTHON_PREFIX}_COMPILER
                    NAMES ipyc
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                    HINTS ${_${_PYTHON_PREFIX}_IRON_ROOT} ${_${_PYTHON_PREFIX}_HINTS}
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                    PATH_SUFFIXES ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
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                    NO_SYSTEM_ENVIRONMENT_PATH
                    NO_CMAKE_SYSTEM_PATH)
      _python_validate_compiler (${_${_PYTHON_PREFIX}_VERSION} EXACT)
      if (${_PYTHON_PREFIX}_COMPILER)
        break()
      endif()
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      if (_${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "LAST")
        find_program (${_PYTHON_PREFIX}_COMPILER
                      NAMES ipyc
                      PATHS [HKEY_LOCAL_MACHINE\\SOFTWARE\\IronPython\\${_${_PYTHON_PREFIX}_VERSION}\\InstallPath]
                      PATH_SUFFIXES ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES}
                      NO_DEFAULT_PATH)
        _python_validate_compiler (${_${_PYTHON_PREFIX}_VERSION} EXACT)
        if (${_PYTHON_PREFIX}_COMPILER)
          break()
        endif()
      endif()
    endforeach()
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    # no specific version found, re-try in standard paths
    find_program (${_PYTHON_PREFIX}_COMPILER
                  NAMES ipyc
                  HINTS ${_${_PYTHON_PREFIX}_IRON_ROOT} ${_${_PYTHON_PREFIX}_HINTS}
                  PATH_SUFFIXES ${_${_PYTHON_PREFIX}_IRON_PYTHON_PATH_SUFFIXES})
  endif()
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  if (${_PYTHON_PREFIX}_COMPILER)
    # retrieve python environment version from compiler
    set (_${_PYTHON_PREFIX}_VERSION_DIR "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/PythonCompilerVersion.dir")
    file (WRITE "${_${_PYTHON_PREFIX}_VERSION_DIR}/version.py" "import sys; sys.stdout.write('.'.join([str(x) for x in sys.version_info[:3]]))\n")
    execute_process (COMMAND "${${_PYTHON_PREFIX}_COMPILER}" /target:exe /embed "${_${_PYTHON_PREFIX}_VERSION_DIR}/version.py"
                     WORKING_DIRECTORY "${_${_PYTHON_PREFIX}_VERSION_DIR}"
                     OUTPUT_QUIET
                     ERROR_QUIET)
    execute_process (COMMAND "${_${_PYTHON_PREFIX}_VERSION_DIR}/version"
                     WORKING_DIRECTORY "${_${_PYTHON_PREFIX}_VERSION_DIR}"
                     RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                     OUTPUT_VARIABLE _${_PYTHON_PREFIX}_VERSION
                     ERROR_QUIET)
    if (NOT _${_PYTHON_PREFIX}_RESULT)
      string (REGEX MATCHALL "[0-9]+" _${_PYTHON_PREFIX}_VERSIONS "${_${_PYTHON_PREFIX}_VERSION}")
      list (GET _${_PYTHON_PREFIX}_VERSIONS 0 _${_PYTHON_PREFIX}_VERSION_MAJOR)
      list (GET _${_PYTHON_PREFIX}_VERSIONS 1 _${_PYTHON_PREFIX}_VERSION_MINOR)
      list (GET _${_PYTHON_PREFIX}_VERSIONS 2 _${_PYTHON_PREFIX}_VERSION_PATCH)

      if (NOT ${_PYTHON_PREFIX}_Interpreter_FOUND)
        # set public version information
        set (${_PYTHON_PREFIX}_VERSION ${_${_PYTHON_PREFIX}_VERSION})
        set (${_PYTHON_PREFIX}_VERSION_MAJOR ${_${_PYTHON_PREFIX}_VERSION_MAJOR})
        set (${_PYTHON_PREFIX}_VERSION_MINOR ${_${_PYTHON_PREFIX}_VERSION_MINOR})
        set (${_PYTHON_PREFIX}_VERSION_PATCH ${_${_PYTHON_PREFIX}_VERSION_PATCH})
      endif()
    else()
      # compiler not usable
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      set_property (CACHE ${_PYTHON_PREFIX}_COMPILER PROPERTY VALUE "${_PYTHON_PREFIX}_COMPILER-NOTFOUND")
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    endif()
    file (REMOVE_RECURSE "${_${_PYTHON_PREFIX}_VERSION_DIR}")
  endif()

  if (${_PYTHON_PREFIX}_COMPILER)
    if (${_PYTHON_PREFIX}_Interpreter_FOUND)
      # Compiler must be compatible with interpreter
      if (${_${_PYTHON_PREFIX}_VERSION_MAJOR}.${_${_PYTHON_PREFIX}_VERSION_MINOR} VERSION_EQUAL ${${_PYTHON_PREFIX}_VERSION_MAJOR}.${${_PYTHON_PREFIX}_VERSION_MINOR})
        set (${_PYTHON_PREFIX}_Compiler_FOUND TRUE)
      endif()
    elseif (${_PYTHON_PREFIX}_VERSION_MAJOR VERSION_EQUAL _${_PYTHON_PREFIX}_REQUIRED_VERSION_MAJOR)
      set (${_PYTHON_PREFIX}_Compiler_FOUND TRUE)
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    # Use compiler version for future searches to ensure consistency
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    set (_${_PYTHON_PREFIX}_FIND_VERSIONS ${${_PYTHON_PREFIX}_VERSION_MAJOR}.${${_PYTHON_PREFIX}_VERSION_MINOR})
    endif()
  endif()

  if (${_PYTHON_PREFIX}_Compiler_FOUND)
    set (${_PYTHON_PREFIX}_COMPILER_ID IronPython)
  else()
    unset (${_PYTHON_PREFIX}_COMPILER_ID)
  endif()

  mark_as_advanced (${_PYTHON_PREFIX}_COMPILER)
endif()


# third step, search for the development artifacts
## Development environment is not compatible with IronPython interpreter
if ("Development" IN_LIST ${_PYTHON_PREFIX}_FIND_COMPONENTS
    AND NOT ${_PYTHON_PREFIX}_INTERPRETER_ID STREQUAL "IronPython")
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  list (APPEND _${_PYTHON_PREFIX}_CACHED_VARS ${_PYTHON_PREFIX}_LIBRARY
                                              ${_PYTHON_PREFIX}_LIBRARY_RELEASE
                                              ${_PYTHON_PREFIX}_RUNTIME_LIBRARY_RELEASE
                                              ${_PYTHON_PREFIX}_LIBRARY_DEBUG
                                              ${_PYTHON_PREFIX}_RUNTIME_LIBRARY_DEBUG
                                              ${_PYTHON_PREFIX}_INCLUDE_DIR)
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  if (${_PYTHON_PREFIX}_FIND_REQUIRED_Development)
    list (APPEND _${_PYTHON_PREFIX}_REQUIRED_VARS ${_PYTHON_PREFIX}_LIBRARY
                                                  ${_PYTHON_PREFIX}_INCLUDE_DIR)
  endif()

  # Support preference of static libs by adjusting CMAKE_FIND_LIBRARY_SUFFIXES
  unset (_${_PYTHON_PREFIX}_CMAKE_FIND_LIBRARY_SUFFIXES)
  if (DEFINED ${_PYTHON_PREFIX}_USE_STATIC_LIBS AND NOT WIN32)
    set(_${_PYTHON_PREFIX}_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
    if(${_PYTHON_PREFIX}_USE_STATIC_LIBS)
      set (CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_STATIC_LIBRARY_SUFFIX})
    else()
      list (REMOVE_ITEM CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_STATIC_LIBRARY_SUFFIX})
    endif()
  endif()

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  # if python interpreter is found, use it to ensure consistency
  # between interpreter and development environment.
  # If not, try to locate a compatible config tool
  if (NOT ${_PYTHON_PREFIX}_Interpreter_FOUND OR CMAKE_CROSSCOMPILING)
    set (_${_PYTHON_PREFIX}_HINTS "${${_PYTHON_PREFIX}_ROOT_DIR}" ENV ${_PYTHON_PREFIX}_ROOT_DIR)
    unset (_${_PYTHON_PREFIX}_VIRTUALENV_PATHS)
    if (_${_PYTHON_PREFIX}_FIND_VIRTUALENV MATCHES "^(FIRST|ONLY)$")
      set (_${_PYTHON_PREFIX}_VIRTUALENV_PATHS ENV VIRTUAL_ENV)
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    endif()
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    unset (_${_PYTHON_PREFIX}_FRAMEWORK_PATHS)
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    if (_${_PYTHON_PREFIX}_FIND_STRATEGY STREQUAL "LOCATION")
      set (_${_PYTHON_PREFIX}_CONFIG_NAMES)
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      foreach (_${_PYTHON_PREFIX}_VERSION IN LISTS _${_PYTHON_PREFIX}_FIND_VERSIONS)
        _python_get_names (_${_PYTHON_PREFIX}_VERSION_NAMES VERSION ${_${_PYTHON_PREFIX}_VERSION} POSIX CONFIG)
        list (APPEND _${_PYTHON_PREFIX}_CONFIG_NAMES ${_${_PYTHON_PREFIX}_VERSION_NAMES})
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        # Framework Paths
        _python_get_frameworks (_${_PYTHON_PREFIX}_VERSION_PATHS ${_${_PYTHON_PREFIX}_VERSION})
        list (APPEND _${_PYTHON_PREFIX}_FRAMEWORK_PATHS ${_${_PYTHON_PREFIX}_VERSION_PATHS})
      endforeach()
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      # Apple frameworks handling
      if (CMAKE_HOST_APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "FIRST")
        find_program (${_PYTHON_PREFIX}_CONFIG
                      NAMES ${_${_PYTHON_PREFIX}_CONFIG_NAMES}
                      NAMES_PER_DIR
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS ${_${_PYTHON_PREFIX}_VIRTUALENV_PATHS}
                            ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
                      PATH_SUFFIXES bin
                      NO_CMAKE_PATH
                      NO_CMAKE_ENVIRONMENT_PATH
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
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      endif()

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      find_program (_${_PYTHON_PREFIX}_CONFIG
                    NAMES ${_${_PYTHON_PREFIX}_CONFIG_NAMES}
                    NAMES_PER_DIR
                    HINTS ${_${_PYTHON_PREFIX}_HINTS}
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                    PATHS ${_${_PYTHON_PREFIX}_VIRTUALENV_PATHS}
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                    PATH_SUFFIXES bin)

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      # Apple frameworks handling
      if (CMAKE_HOST_APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "LAST")
        find_program (_${_PYTHON_PREFIX}_CONFIG
                      NAMES ${_${_PYTHON_PREFIX}_CONFIG_NAMES}
                      NAMES_PER_DIR
                      PATHS ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
                      PATH_SUFFIXES bin
                      NO_DEFAULT_PATH)
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      endif()
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      if (_${_PYTHON_PREFIX}_CONFIG)
        execute_process (COMMAND "${_${_PYTHON_PREFIX}_CONFIG}" --help
                         RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                         OUTPUT_VARIABLE __${_PYTHON_PREFIX}_HELP
                         ERROR_QUIET
                         OUTPUT_STRIP_TRAILING_WHITESPACE)
        if (_${_PYTHON_PREFIX}_RESULT)
          # assume config tool is not usable
          unset (_${_PYTHON_PREFIX}_CONFIG CACHE)
        endif()
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      endif()
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1300
1301
1302
1303
1304
1305
1306
1307
1308
1309

      if (_${_PYTHON_PREFIX}_CONFIG)
        execute_process (COMMAND "${_${_PYTHON_PREFIX}_CONFIG}" --abiflags
                         RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                         OUTPUT_VARIABLE __${_PYTHON_PREFIX}_ABIFLAGS
                         ERROR_QUIET
                         OUTPUT_STRIP_TRAILING_WHITESPACE)
        if (_${_PYTHON_PREFIX}_RESULT)
          # assume ABI is not supported
          set (__${_PYTHON_PREFIX}_ABIFLAGS "")
        endif()
        if (DEFINED _${_PYTHON_PREFIX}_FIND_ABI AND NOT __${_PYTHON_PREFIX}_ABIFLAGS IN_LIST _${_PYTHON_PREFIX}_ABIFLAGS)
          # Wrong ABI
          unset (_${_PYTHON_PREFIX}_CONFIG CACHE)
        endif()
1310
1311
      endif()

1312
      if (_${_PYTHON_PREFIX}_CONFIG AND DEFINED CMAKE_LIBRARY_ARCHITECTURE)
1313
1314
1315
1316
1317
1318
1319
1320
        # check that config tool match library architecture
        execute_process (COMMAND "${_${_PYTHON_PREFIX}_CONFIG}" --configdir
                         RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                         OUTPUT_VARIABLE _${_PYTHON_PREFIX}_CONFIGDIR
                         ERROR_QUIET
                         OUTPUT_STRIP_TRAILING_WHITESPACE)
        if (_${_PYTHON_PREFIX}_RESULT)
          unset (_${_PYTHON_PREFIX}_CONFIG CACHE)
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
        else()
          string(FIND "${_${_PYTHON_PREFIX}_CONFIGDIR}" "${CMAKE_LIBRARY_ARCHITECTURE}" _${_PYTHON_PREFIX}_RESULT)
          if (_${_PYTHON_PREFIX}_RESULT EQUAL -1)
            unset (_${_PYTHON_PREFIX}_CONFIG CACHE)
          endif()
        endif()
      endif()
    else()
      foreach (_${_PYTHON_PREFIX}_VERSION IN LISTS _${_PYTHON_PREFIX}_FIND_VERSIONS)
        # try to use pythonX.Y-config tool
        _python_get_names (_${_PYTHON_PREFIX}_CONFIG_NAMES VERSION ${_${_PYTHON_PREFIX}_VERSION} POSIX CONFIG)

        # Framework Paths
        _python_get_frameworks (_${_PYTHON_PREFIX}_FRAMEWORK_PATHS ${_${_PYTHON_PREFIX}_VERSION})

        # Apple frameworks handling
        if (CMAKE_HOST_APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "FIRST")
          find_program (${_PYTHON_PREFIX}_CONFIG
                        NAMES ${_${_PYTHON_PREFIX}_CONFIG_NAMES}
                        NAMES_PER_DIR
                        HINTS ${_${_PYTHON_PREFIX}_HINTS}
                        PATHS ${_${_PYTHON_PREFIX}_VIRTUALENV_PATHS}
                              ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
                        PATH_SUFFIXES bin
                        NO_CMAKE_PATH
                        NO_CMAKE_ENVIRONMENT_PATH
                        NO_SYSTEM_ENVIRONMENT_PATH
                        NO_CMAKE_SYSTEM_PATH)
        endif()

        find_program (_${_PYTHON_PREFIX}_CONFIG
                      NAMES ${_${_PYTHON_PREFIX}_CONFIG_NAMES}
                      NAMES_PER_DIR
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
                      PATHS ${_${_PYTHON_PREFIX}_VIRTUALENV_PATHS}
                      PATH_SUFFIXES bin)

        # Apple frameworks handling
        if (CMAKE_HOST_APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "LAST")
          find_program (_${_PYTHON_PREFIX}_CONFIG
                        NAMES ${_${_PYTHON_PREFIX}_CONFIG_NAMES}
                        NAMES_PER_DIR
                        PATHS ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
                        PATH_SUFFIXES bin
                        NO_DEFAULT_PATH)
        endif()

        unset (_${_PYTHON_PREFIX}_CONFIG_NAMES)

        if (_${_PYTHON_PREFIX}_CONFIG)
          execute_process (COMMAND "${_${_PYTHON_PREFIX}_CONFIG}" --help
                           RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                           OUTPUT_VARIABLE __${_PYTHON_PREFIX}_HELP
                           ERROR_QUIET
                           OUTPUT_STRIP_TRAILING_WHITESPACE)
          if (_${_PYTHON_PREFIX}_RESULT)
            # assume config tool is not usable
            unset (_${_PYTHON_PREFIX}_CONFIG CACHE)
          endif()
        endif()

        if (NOT _${_PYTHON_PREFIX}_CONFIG)
1383
1384
          continue()
        endif()
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396

        execute_process (COMMAND "${_${_PYTHON_PREFIX}_CONFIG}" --abiflags
                         RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                         OUTPUT_VARIABLE __${_PYTHON_PREFIX}_ABIFLAGS
                         ERROR_QUIET
                         OUTPUT_STRIP_TRAILING_WHITESPACE)
        if (_${_PYTHON_PREFIX}_RESULT)
          # assume ABI is not supported
          set (__${_PYTHON_PREFIX}_ABIFLAGS "")
        endif()
        if (DEFINED _${_PYTHON_PREFIX}_FIND_ABI AND NOT __${_PYTHON_PREFIX}_ABIFLAGS IN_LIST _${_PYTHON_PREFIX}_ABIFLAGS)
          # Wrong ABI
1397
1398
1399
1400
          unset (_${_PYTHON_PREFIX}_CONFIG CACHE)
          continue()
        endif()

1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
        if (_${_PYTHON_PREFIX}_CONFIG AND DEFINED CMAKE_LIBRARY_ARCHITECTURE)
          # check that config tool match library architecture
          execute_process (COMMAND "${_${_PYTHON_PREFIX}_CONFIG}" --configdir
                           RESULT_VARIABLE _${_PYTHON_PREFIX}_RESULT
                           OUTPUT_VARIABLE _${_PYTHON_PREFIX}_CONFIGDIR
                           ERROR_QUIET
                           OUTPUT_STRIP_TRAILING_WHITESPACE)
          if (_${_PYTHON_PREFIX}_RESULT)
            unset (_${_PYTHON_PREFIX}_CONFIG CACHE)
            continue()
          endif()
          string(FIND "${_${_PYTHON_PREFIX}_CONFIGDIR}" "${CMAKE_LIBRARY_ARCHITECTURE}" _${_PYTHON_PREFIX}_RESULT)
          if (_${_PYTHON_PREFIX}_RESULT EQUAL -1)
            unset (_${_PYTHON_PREFIX}_CONFIG CACHE)
            continue()
          endif()
        endif()
1418

1419
1420
1421
1422
        if (_${_PYTHON_PREFIX}_CONFIG)
          break()
        endif()
      endforeach()
1423
    endif()
1424
1425
  endif()

1426
1427
1428
1429
  if ((${_PYTHON_PREFIX}_Interpreter_FOUND AND NOT CMAKE_CROSSCOMPILING) OR _${_PYTHON_PREFIX}_CONFIG)
    # retrieve root install directory
    _python_get_config_var (_${_PYTHON_PREFIX}_PREFIX PREFIX)

1430
    # enforce current ABI
1431
    _python_get_config_var (_${_PYTHON_PREFIX}_ABIFLAGS ABIFLAGS)
1432

1433
1434
1435
1436
    set (_${_PYTHON_PREFIX}_HINTS "${_${_PYTHON_PREFIX}_PREFIX}")

    # retrieve library
    ## compute some paths and artifact names
1437
1438
1439
1440
    if (_${_PYTHON_PREFIX}_CONFIG)
      string (REGEX REPLACE "^.+python([0-9.]+)[a-z]*-config" "\\1" _${_PYTHON_PREFIX}_LIB_VERSION "${_${_PYTHON_PREFIX}_CONFIG}")
    else()
      set (_${_PYTHON_PREFIX}_LIB_VERSION "${${_PYTHON_PREFIX}_VERSION_MAJOR}.${${_PYTHON_PREFIX}_VERSION_MINOR}")
1441
    endif()
1442
1443
1444
1445
1446
    _python_get_path_suffixes (_${_PYTHON_PREFIX}_PATH_SUFFIXES VERSION ${_${_PYTHON_PREFIX}_LIB_VERSION} LIBRARY)
    _python_get_names (_${_PYTHON_PREFIX}_LIB_NAMES VERSION ${_${_PYTHON_PREFIX}_LIB_VERSION} POSIX LIBRARY)

    _python_get_config_var (_${_PYTHON_PREFIX}_CONFIGDIR CONFIGDIR)
    list (APPEND _${_PYTHON_PREFIX}_HINTS "${_${_PYTHON_PREFIX}_CONFIGDIR}")
1447

1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
    list (APPEND _${_PYTHON_PREFIX}_HINTS "${${_PYTHON_PREFIX}_ROOT_DIR}" ENV ${_PYTHON_PREFIX}_ROOT_DIR)

    find_library (${_PYTHON_PREFIX}_LIBRARY_RELEASE
                  NAMES ${_${_PYTHON_PREFIX}_LIB_NAMES}
                  NAMES_PER_DIR
                  HINTS ${_${_PYTHON_PREFIX}_HINTS}
                  PATH_SUFFIXES ${_${_PYTHON_PREFIX}_PATH_SUFFIXES}
                  NO_SYSTEM_ENVIRONMENT_PATH
                  NO_CMAKE_SYSTEM_PATH)

    # retrieve runtime library
    if (${_PYTHON_PREFIX}_LIBRARY_RELEASE)
      get_filename_component (_${_PYTHON_PREFIX}_PATH "${${_PYTHON_PREFIX}_LIBRARY_RELEASE}" DIRECTORY)
      get_filename_component (_${_PYTHON_PREFIX}_PATH2 "${_${_PYTHON_PREFIX}_PATH}" DIRECTORY)
      _python_find_runtime_library (${_PYTHON_PREFIX}_RUNTIME_LIBRARY_RELEASE
                                    NAMES ${_${_PYTHON_PREFIX}_LIB_NAMES}
                                    NAMES_PER_DIR
                                    HINTS "${_${_PYTHON_PREFIX}_PATH}" "${_${_PYTHON_PREFIX}_PATH2}" ${_${_PYTHON_PREFIX}_HINTS}
                                    PATH_SUFFIXES bin
                                    NO_SYSTEM_ENVIRONMENT_PATH
                                    NO_CMAKE_SYSTEM_PATH)
    endif()

1471
    # retrieve include directory
1472
    _python_get_config_var (_${_PYTHON_PREFIX}_INCLUDE_DIRS INCLUDES)
1473

1474
1475
1476
1477
1478
    find_path (${_PYTHON_PREFIX}_INCLUDE_DIR
               NAMES Python.h
               HINTS ${_${_PYTHON_PREFIX}_INCLUDE_DIRS}
               NO_SYSTEM_ENVIRONMENT_PATH
               NO_CMAKE_SYSTEM_PATH)
1479
  endif()
1480

1481
  # Rely on HINTS and standard paths if interpreter or config tool failed to locate artifacts
1482
  if (NOT ${_PYTHON_PREFIX}_LIBRARY_RELEASE OR NOT ${_PYTHON_PREFIX}_INCLUDE_DIR)
1483
1484
1485
1486
1487
1488
    set (_${_PYTHON_PREFIX}_HINTS "${${_PYTHON_PREFIX}_ROOT_DIR}" ENV ${_PYTHON_PREFIX}_ROOT_DIR)

    unset (_${_PYTHON_PREFIX}_VIRTUALENV_PATHS)
    if (_${_PYTHON_PREFIX}_FIND_VIRTUALENV MATCHES "^(FIRST|ONLY)$")
      set (_${_PYTHON_PREFIX}_VIRTUALENV_PATHS ENV VIRTUAL_ENV)
    endif()
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498

    if (_${_PYTHON_PREFIX}_FIND_STRATEGY STREQUAL "LOCATION")
      unset (_${_PYTHON_PREFIX}_LIB_NAMES)
      unset (_${_PYTHON_PREFIX}_LIB_NAMES_DEBUG)
      unset (_${_PYTHON_PREFIX}_FRAMEWORK_PATHS)
      unset (_${_PYTHON_PREFIX}_REGISTRY_PATHS)
      unset (_${_PYTHON_PREFIX}_PATH_SUFFIXES)

      foreach (_${_PYTHON_PREFIX}_LIB_VERSION IN LISTS _${_PYTHON_PREFIX}_FIND_VERSIONS)
        # library names
1499
        _python_get_names (_${_PYTHON_PREFIX}_VERSION_NAMES VERSION ${_${_PYTHON_PREFIX}_LIB_VERSION} WIN32 POSIX LIBRARY)
1500
        list (APPEND _${_PYTHON_PREFIX}_LIB_NAMES ${_${_PYTHON_PREFIX}_VERSION_NAMES})
1501
        _python_get_names (_${_PYTHON_PREFIX}_VERSION_NAMES VERSION ${_${_PYTHON_PREFIX}_LIB_VERSION} WIN32 DEBUG)
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
        list (APPEND _${_PYTHON_PREFIX}_LIB_NAMES_DEBUG ${_${_PYTHON_PREFIX}_VERSION_NAMES})

        # Framework Paths
        _python_get_frameworks (_${_PYTHON_PREFIX}_VERSION_PATHS ${_${_PYTHON_PREFIX}_LIB_VERSION})
        list (APPEND _${_PYTHON_PREFIX}_FRAMEWORK_PATHS ${_${_PYTHON_PREFIX}_VERSION_PATHS})

        # Registry Paths
        _python_get_registries (_${_PYTHON_PREFIX}_VERSION_PATHS ${_${_PYTHON_PREFIX}_LIB_VERSION})
        list (APPEND _${_PYTHON_PREFIX}_REGISTRY_PATHS ${_${_PYTHON_PREFIX}_VERSION_PATHS})

        # Paths suffixes
1513
        _python_get_path_suffixes (_${_PYTHON_PREFIX}_VERSION_PATHS VERSION ${_${_PYTHON_PREFIX}_LIB_VERSION} LIBRARY)
1514
1515
        list (APPEND _${_PYTHON_PREFIX}_PATH_SUFFIXES ${_${_PYTHON_PREFIX}_VERSION_PATHS})
      endforeach()
1516

1517
1518
      if (APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "FIRST")
        find_library (${_PYTHON_PREFIX}_LIBRARY_RELEASE
1519
                      NAMES ${_${_PYTHON_PREFIX}_LIB_NAMES}
1520
                      NAMES_PER_DIR
1521
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
1522
1523
                      PATHS ${_${_PYTHON_PREFIX}_VIRTUALENV_PATHS}
                            ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
1524
                      PATH_SUFFIXES ${_${_PYTHON_PREFIX}_PATH_SUFFIXES}
1525
1526
1527
1528
1529
1530
                      NO_CMAKE_PATH
                      NO_CMAKE_ENVIRONMENT_PATH
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
      endif()

1531
1532
      if (WIN32 AND _${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "FIRST")
        find_library (${_PYTHON_PREFIX}_LIBRARY_RELEASE
1533
                      NAMES ${_${_PYTHON_PREFIX}_LIB_NAMES}
1534
1535
                      NAMES_PER_DIR
                      HINTS ${_${_PYTHON_PREFIX}_HINTS}
1536
1537
                      PATHS ${_${_PYTHON_PREFIX}_VIRTUALENV_PATHS}
                            ${_${_PYTHON_PREFIX}_REGISTRY_PATHS}
1538
                      PATH_SUFFIXES ${_${_PYTHON_PREFIX}_PATH_SUFFIXES}
1539
1540
1541
1542
1543
                      NO_SYSTEM_ENVIRONMENT_PATH
                      NO_CMAKE_SYSTEM_PATH)
      endif()

      # search in HINTS locations
1544
      find_library (${_PYTHON_PREFIX}_LIBRARY_RELEASE
1545
                    NAMES ${_${_PYTHON_PREFIX}_LIB_NAMES}
1546
1547
                    NAMES_PER_DIR
                    HINTS ${_${_PYTHON_PREFIX}_HINTS}
1548
                    PATHS ${_${_PYTHON_PREFIX}_VIRTUALENV_PATHS}
1549
                    PATH_SUFFIXES ${_${_PYTHON_PREFIX}_PATH_SUFFIXES}
1550
1551
                    NO_SYSTEM_ENVIRONMENT_PATH
                    NO_CMAKE_SYSTEM_PATH)
1552
1553
1554
1555
1556
1557
1558

      if (APPLE AND _${_PYTHON_PREFIX}_FIND_FRAMEWORK STREQUAL "LAST")
        set (__${_PYTHON_PREFIX}_FRAMEWORK_PATHS ${_${_PYTHON_PREFIX}_FRAMEWORK_PATHS})
      else()
        unset (__${_PYTHON_PREFIX}_FRAMEWORK_PATHS)
      endif()

1559
1560
1561
1562
1563
1564
      if (WIN32 AND _${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "LAST")
        set (__${_PYTHON_PREFIX}_REGISTRY_PATHS ${_${_PYTHON_PREFIX}_REGISTRY_PATHS})
      else()
        unset (__${_PYTHON_PREFIX}_REGISTRY_PATHS)
      endif()

1565
1566
      # search in all default paths
      find_library (${_PYTHON_PREFIX}_LIBRARY_RELEASE
1567
                    NAMES ${_${_PYTHON_PREFIX}_LIB_NAMES}
1568
                    NAMES_PER_DIR
1569
                    PATHS ${__${_PYTHON_PREFIX}_FRAMEWORK_PATHS}
1570
                          ${__${_PYTHON_PREFIX}_REGISTRY_PATHS}
1571
1572
                    PATH_SUFFIXES ${_${_PYTHON_PREFIX}_PATH_SUFFIXES})

1573
      if (${_PYTHON_PREFIX}_LIBRARY_RELEASE)
1574
1575
1576
1577
1578
1579
        # extract version from library name
        if (${_PYTHON_PREFIX}_LIBRARY_RELEASE MATCHES "python([23])([0-9]+)")
          set (_${_PYTHON_PREFIX}_VERSION "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}")
        elseif (${_PYTHON_PREFIX}_LIBRARY_RELEASE MATCHES "python([23])\\.([0-9]+)")
          set (_${_PYTHON_PREFIX}_VERSION "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}")
        endif()
1580
1581
1582
1583
1584
1585
      endif()

      if (WIN32)
        # search for debug library
        if (${_PYTHON_PREFIX}_LIBRARY_RELEASE)
          # use library location as a hint
1586
          _python_get_names (_${_PYTHON_PREFIX}_LIB_NAMES_DEBUG VERSION ${_${_PYTHON_PREFIX}_VERSION} WIN32 DEBUG)
1587
1588
          get_filename_component (_${_PYTHON_PREFIX}_PATH "${${_PYTHON_PREFIX}_LIBRARY_RELEASE}" DIRECTORY)
          find_library (${_PYTHON_PREFIX}_LIBRARY_DEBUG
1589
                        NAMES ${_${_PYTHON_PREFIX}_LIB_NAMES_DEBUG}
1590
                        NAMES_PER_DIR
1591
1592
1593
1594
1595
1596
                        HINTS "${_${_PYTHON_PREFIX}_PATH}" ${_${_PYTHON_PREFIX}_HINTS}
                        NO_DEFAULT_PATH)
        else()
          # search first in known locations
          if (_${_PYTHON_PREFIX}_FIND_REGISTRY STREQUAL "FIRST")
            find_library (${_PYTHON_PREFIX}_LIBRARY_DEBUG
1597
                          NAMES ${_${_PYTHON_PREFIX}_LIB_NAMES_DEBUG}
1598
1599
                          NAMES_PER_DIR
                          HINTS ${_${_PYTHON_PREFIX}_HINTS}
1600
1601
                          PATHS ${