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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindODBC
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--------
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Find an Open Database Connectivity (ODBC) include directory and library.
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On Windows, when building with Visual Studio, this module assumes the ODBC
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library is provided by the available Windows SDK.
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On Unix, this module allows to search for ODBC library provided by
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unixODBC or iODBC implementations of ODBC API.
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This module reads hint about location of the config program:
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.. variable:: ODBC_CONFIG
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Location of odbc_config or iodbc-config program
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Otherwise, this module tries to find the config program,
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first from unixODBC, then from iODBC.
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If no config program found, this module searches for ODBC header
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and library in list of known locations.
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Imported targets
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^^^^^^^^^^^^^^^^
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This module defines the following :prop_tgt:`IMPORTED` targets:
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.. variable:: ODBC::ODBC
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Imported target for using the ODBC library, if found.
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Result variables
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^^^^^^^^^^^^^^^^
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.. variable:: ODBC_FOUND
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Set to true if ODBC library found, otherwise false or undefined.
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.. variable:: ODBC_INCLUDE_DIRS
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Paths to include directories listed in one variable for use by ODBC client.
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May be empty on Windows, where the include directory corresponding to the
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expected Windows SDK is already available in the compilation environment.
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.. variable:: ODBC_LIBRARIES
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Paths to libraries to linked against to use ODBC.
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May just a library name on Windows, where the library directory corresponding
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to the expected Windows SDK is already available in the compilation environment.
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.. variable:: ODBC_CONFIG
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Path to unixODBC or iODBC config program, if found or specified.
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Cache variables
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^^^^^^^^^^^^^^^
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For users who wish to edit and control the module behavior, this module
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reads hints about search locations from the following variables:
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.. variable:: ODBC_INCLUDE_DIR
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Path to ODBC include directory with ``sql.h`` header.
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.. variable:: ODBC_LIBRARY
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Path to ODBC library to be linked.
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These variables should not be used directly by project code.
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Limitations
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^^^^^^^^^^^
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On Windows, this module does not search for iODBC.
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On Unix, there is no way to prefer unixODBC over iODBC, or vice versa,
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other than providing the config program location using the ``ODBC_CONFIG``.
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This module does not allow to search for a specific ODBC driver.
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#]=======================================================================]
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# Define lists used internally
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set(_odbc_include_paths)
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set(_odbc_lib_paths)
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set(_odbc_lib_names)
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set(_odbc_required_libs_names)
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### Try Windows Kits ##########################################################
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if(WIN32)
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# List names of ODBC libraries on Windows
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if(NOT MINGW)
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set(ODBC_LIBRARY odbc32.lib)
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else()
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set(ODBC_LIBRARY libodbc32.a)
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endif()
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set(_odbc_lib_names odbc32;)
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# List additional libraries required to use ODBC library
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if(MSVC OR CMAKE_CXX_COMPILER_ID MATCHES "Intel")
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set(_odbc_required_libs_names odbccp32;ws2_32)
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elseif(MINGW)
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set(_odbc_required_libs_names odbccp32)
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endif()
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endif()
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### Try unixODBC or iODBC config program ######################################
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if (UNIX)
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find_program(ODBC_CONFIG
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NAMES odbc_config iodbc-config
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DOC "Path to unixODBC or iODBC config program")
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mark_as_advanced(ODBC_CONFIG)
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endif()
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if (UNIX AND ODBC_CONFIG)
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# unixODBC and iODBC accept unified command line options
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execute_process(COMMAND ${ODBC_CONFIG} --cflags
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OUTPUT_VARIABLE _cflags OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND ${ODBC_CONFIG} --libs
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OUTPUT_VARIABLE _libs OUTPUT_STRIP_TRAILING_WHITESPACE)
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# Collect paths of include directories from CFLAGS
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separate_arguments(_cflags NATIVE_COMMAND "${_cflags}")
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foreach(arg IN LISTS _cflags)
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if("${arg}" MATCHES "^-I(.*)$")
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list(APPEND _odbc_include_paths "${CMAKE_MATCH_1}")
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endif()
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endforeach()
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unset(_cflags)
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# Collect paths of library names and directories from LIBS
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separate_arguments(_libs NATIVE_COMMAND "${_libs}")
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foreach(arg IN LISTS _libs)
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if("${arg}" MATCHES "^-L(.*)$")
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list(APPEND _odbc_lib_paths "${CMAKE_MATCH_1}")
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elseif("${arg}" MATCHES "^-l(.*)$")
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set(_lib_name ${CMAKE_MATCH_1})
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string(REGEX MATCH "odbc" _is_odbc ${_lib_name})
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if(_is_odbc)
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list(APPEND _odbc_lib_names ${_lib_name})
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else()
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list(APPEND _odbc_required_libs_names ${_lib_name})
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endif()
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unset(_lib_name)
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endif()
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endforeach()
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unset(_libs)
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endif()
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### Try unixODBC or iODBC in include/lib filesystems ##########################
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if (UNIX AND NOT ODBC_CONFIG)
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# List names of both ODBC libraries, unixODBC and iODBC
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set(_odbc_lib_names odbc;iodbc;unixodbc;)
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endif()
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### Find include directories ##################################################
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find_path(ODBC_INCLUDE_DIR
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NAMES sql.h
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PATHS ${_odbc_include_paths})
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if(NOT ODBC_INCLUDE_DIR AND WIN32)
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set(ODBC_INCLUDE_DIR "")
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endif()
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### Find libraries ############################################################
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if(NOT ODBC_LIBRARY)
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find_library(ODBC_LIBRARY
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NAMES ${_odbc_lib_names}
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PATHS ${_odbc_lib_paths}
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PATH_SUFFIXES odbc)
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foreach(_lib IN LISTS _odbc_required_libs_names)
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find_library(_lib_path
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NAMES ${_lib}
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PATHS ${_odbc_lib_paths} # system parths or collected from ODBC_CONFIG
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PATH_SUFFIXES odbc)
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if(_lib_path)
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list(APPEND _odbc_required_libs_paths ${_lib_path})
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endif()
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unset(_lib_path CACHE)
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endforeach()
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endif()
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# Unset internal lists as no longer used
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unset(_odbc_include_paths)
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unset(_odbc_lib_paths)
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unset(_odbc_lib_names)
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unset(_odbc_required_libs_names)
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### Set result variables ######################################################
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set(_odbc_required_vars ODBC_LIBRARY)
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if(NOT WIN32)
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list(APPEND _odbc_required_vars ODBC_INCLUDE_DIR)
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(ODBC DEFAULT_MSG ${_odbc_required_vars})
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unset(_odbc_required_vars)
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mark_as_advanced(ODBC_LIBRARY ODBC_INCLUDE_DIR)
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set(ODBC_INCLUDE_DIRS ${ODBC_INCLUDE_DIR})
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list(APPEND ODBC_LIBRARIES ${ODBC_LIBRARY})
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list(APPEND ODBC_LIBRARIES ${_odbc_required_libs_paths})
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### Import targets ############################################################
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if(ODBC_FOUND)
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if(NOT TARGET ODBC::ODBC)
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if(IS_ABSOLUTE "${ODBC_LIBRARY}")
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add_library(ODBC::ODBC UNKNOWN IMPORTED)
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set_target_properties(ODBC::ODBC PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION "${ODBC_LIBRARY}")
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else()
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add_library(ODBC::ODBC INTERFACE IMPORTED)
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set_target_properties(ODBC::ODBC PROPERTIES
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IMPORTED_LIBNAME "${ODBC_LIBRARY}")
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endif()
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set_target_properties(ODBC::ODBC PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${ODBC_INCLUDE_DIR}")
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if(_odbc_required_libs_paths)
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set_property(TARGET ODBC::ODBC APPEND PROPERTY
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INTERFACE_LINK_LIBRARIES "${_odbc_required_libs_paths}")
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endif()
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endif()
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endif()
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unset(_odbc_required_libs_paths)
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