--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/FindODBC.cmake Mon May 25 19:36:06 2020 +0200
@@ -0,0 +1,231 @@
+# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+FindODBC
+--------
+
+Find an Open Database Connectivity (ODBC) include directory and library.
+
+On Windows, when building with Visual Studio, this module assumes the ODBC
+library is provided by the available Windows SDK.
+
+On Unix, this module allows to search for ODBC library provided by
+unixODBC or iODBC implementations of ODBC API.
+This module reads hint about location of the config program:
+
+.. variable:: ODBC_CONFIG
+
+ Location of odbc_config or iodbc-config program
+
+Otherwise, this module tries to find the config program,
+first from unixODBC, then from iODBC.
+If no config program found, this module searches for ODBC header
+and library in list of known locations.
+
+Imported targets
+^^^^^^^^^^^^^^^^
+
+This module defines the following :prop_tgt:`IMPORTED` targets:
+
+.. variable:: ODBC::ODBC
+
+ Imported target for using the ODBC library, if found.
+
+Result variables
+^^^^^^^^^^^^^^^^
+
+.. variable:: ODBC_FOUND
+
+ Set to true if ODBC library found, otherwise false or undefined.
+
+.. variable:: ODBC_INCLUDE_DIRS
+
+ Paths to include directories listed in one variable for use by ODBC client.
+ May be empty on Windows, where the include directory corresponding to the
+ expected Windows SDK is already available in the compilation environment.
+
+.. variable:: ODBC_LIBRARIES
+
+ Paths to libraries to linked against to use ODBC.
+ May just a library name on Windows, where the library directory corresponding
+ to the expected Windows SDK is already available in the compilation environment.
+
+.. variable:: ODBC_CONFIG
+
+ Path to unixODBC or iODBC config program, if found or specified.
+
+Cache variables
+^^^^^^^^^^^^^^^
+
+For users who wish to edit and control the module behavior, this module
+reads hints about search locations from the following variables:
+
+.. variable:: ODBC_INCLUDE_DIR
+
+ Path to ODBC include directory with ``sql.h`` header.
+
+.. variable:: ODBC_LIBRARY
+
+ Path to ODBC library to be linked.
+
+These variables should not be used directly by project code.
+
+Limitations
+^^^^^^^^^^^
+
+On Windows, this module does not search for iODBC.
+On Unix, there is no way to prefer unixODBC over iODBC, or vice versa,
+other than providing the config program location using the ``ODBC_CONFIG``.
+This module does not allow to search for a specific ODBC driver.
+
+#]=======================================================================]
+
+# Define lists used internally
+set(_odbc_include_paths)
+set(_odbc_lib_paths)
+set(_odbc_lib_names)
+set(_odbc_required_libs_names)
+
+### Try Windows Kits ##########################################################
+if(WIN32)
+ # List names of ODBC libraries on Windows
+ if(NOT MINGW)
+ set(ODBC_LIBRARY odbc32.lib)
+ else()
+ set(ODBC_LIBRARY libodbc32.a)
+ endif()
+ set(_odbc_lib_names odbc32;)
+
+ # List additional libraries required to use ODBC library
+ if(MSVC OR CMAKE_CXX_COMPILER_ID MATCHES "Intel")
+ set(_odbc_required_libs_names odbccp32;ws2_32)
+ elseif(MINGW)
+ set(_odbc_required_libs_names odbccp32)
+ endif()
+endif()
+
+### Try unixODBC or iODBC config program ######################################
+if (UNIX)
+ find_program(ODBC_CONFIG
+ NAMES odbc_config iodbc-config
+ DOC "Path to unixODBC or iODBC config program")
+ mark_as_advanced(ODBC_CONFIG)
+endif()
+
+if (UNIX AND ODBC_CONFIG)
+ # unixODBC and iODBC accept unified command line options
+ execute_process(COMMAND ${ODBC_CONFIG} --cflags
+ OUTPUT_VARIABLE _cflags OUTPUT_STRIP_TRAILING_WHITESPACE)
+ execute_process(COMMAND ${ODBC_CONFIG} --libs
+ OUTPUT_VARIABLE _libs OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+ # Collect paths of include directories from CFLAGS
+ separate_arguments(_cflags NATIVE_COMMAND "${_cflags}")
+ foreach(arg IN LISTS _cflags)
+ if("${arg}" MATCHES "^-I(.*)$")
+ list(APPEND _odbc_include_paths "${CMAKE_MATCH_1}")
+ endif()
+ endforeach()
+ unset(_cflags)
+
+ # Collect paths of library names and directories from LIBS
+ separate_arguments(_libs NATIVE_COMMAND "${_libs}")
+ foreach(arg IN LISTS _libs)
+ if("${arg}" MATCHES "^-L(.*)$")
+ list(APPEND _odbc_lib_paths "${CMAKE_MATCH_1}")
+ elseif("${arg}" MATCHES "^-l(.*)$")
+ set(_lib_name ${CMAKE_MATCH_1})
+ string(REGEX MATCH "odbc" _is_odbc ${_lib_name})
+ if(_is_odbc)
+ list(APPEND _odbc_lib_names ${_lib_name})
+ else()
+ list(APPEND _odbc_required_libs_names ${_lib_name})
+ endif()
+ unset(_lib_name)
+ endif()
+ endforeach()
+ unset(_libs)
+endif()
+
+### Try unixODBC or iODBC in include/lib filesystems ##########################
+if (UNIX AND NOT ODBC_CONFIG)
+ # List names of both ODBC libraries, unixODBC and iODBC
+ set(_odbc_lib_names odbc;iodbc;unixodbc;)
+endif()
+
+### Find include directories ##################################################
+find_path(ODBC_INCLUDE_DIR
+ NAMES sql.h
+ PATHS ${_odbc_include_paths})
+
+if(NOT ODBC_INCLUDE_DIR AND WIN32)
+ set(ODBC_INCLUDE_DIR "")
+endif()
+
+### Find libraries ############################################################
+if(NOT ODBC_LIBRARY)
+ find_library(ODBC_LIBRARY
+ NAMES ${_odbc_lib_names}
+ PATHS ${_odbc_lib_paths}
+ PATH_SUFFIXES odbc)
+
+ foreach(_lib IN LISTS _odbc_required_libs_names)
+ find_library(_lib_path
+ NAMES ${_lib}
+ PATHS ${_odbc_lib_paths} # system parths or collected from ODBC_CONFIG
+ PATH_SUFFIXES odbc)
+ if(_lib_path)
+ list(APPEND _odbc_required_libs_paths ${_lib_path})
+ endif()
+ unset(_lib_path CACHE)
+ endforeach()
+endif()
+
+# Unset internal lists as no longer used
+unset(_odbc_include_paths)
+unset(_odbc_lib_paths)
+unset(_odbc_lib_names)
+unset(_odbc_required_libs_names)
+
+### Set result variables ######################################################
+set(_odbc_required_vars ODBC_LIBRARY)
+if(NOT WIN32)
+ list(APPEND _odbc_required_vars ODBC_INCLUDE_DIR)
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(ODBC DEFAULT_MSG ${_odbc_required_vars})
+
+unset(_odbc_required_vars)
+
+mark_as_advanced(ODBC_LIBRARY ODBC_INCLUDE_DIR)
+
+set(ODBC_INCLUDE_DIRS ${ODBC_INCLUDE_DIR})
+list(APPEND ODBC_LIBRARIES ${ODBC_LIBRARY})
+list(APPEND ODBC_LIBRARIES ${_odbc_required_libs_paths})
+
+### Import targets ############################################################
+if(ODBC_FOUND)
+ if(NOT TARGET ODBC::ODBC)
+ if(IS_ABSOLUTE "${ODBC_LIBRARY}")
+ add_library(ODBC::ODBC UNKNOWN IMPORTED)
+ set_target_properties(ODBC::ODBC PROPERTIES
+ IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+ IMPORTED_LOCATION "${ODBC_LIBRARY}")
+ else()
+ add_library(ODBC::ODBC INTERFACE IMPORTED)
+ set_target_properties(ODBC::ODBC PROPERTIES
+ IMPORTED_LIBNAME "${ODBC_LIBRARY}")
+ endif()
+ set_target_properties(ODBC::ODBC PROPERTIES
+ INTERFACE_INCLUDE_DIRECTORIES "${ODBC_INCLUDE_DIR}")
+
+ if(_odbc_required_libs_paths)
+ set_property(TARGET ODBC::ODBC APPEND PROPERTY
+ INTERFACE_LINK_LIBRARIES "${_odbc_required_libs_paths}")
+ endif()
+ endif()
+endif()
+
+unset(_odbc_required_libs_paths)