Adding a FindPostgreSQL.cmake module
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Andrew Maclean
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# Find the PostgreSQL installation.
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#
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# ----------------------------------------------------------------------------
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# Usage:
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# In your CMakeLists.txt file do something like this:
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# ...
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# # PostgreSQL
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# FIND_PACKAGE(PostgreSQL)
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# ...
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# if( PostgreSQL_FOUND )
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# include_directories(${PostgreSQL_INCLUDE_DIRS})
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# link_directories(${PostgreSQL_LIBRARY_DIRS})
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# endif( PostgreSQL_FOUND )
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# ...
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# Remember to include ${PostgreSQL_LIBRARIES} in the target_link_libraries() statement.
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#
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#
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# In Windows, we make the assumption that, if the PostgreSQL files are installed, the default directory
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# will be C:\Program Files\PostgreSQL.
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#
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# ----------------------------------------------------------------------------
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# History:
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# This module is derived from the module originally found in the VTK source tree.
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#
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# ----------------------------------------------------------------------------
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# Note:
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# PostgreSQL_ADDITIONAL_VERSIONS is a variable that can be used to set the
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# version mumber of the implementation of PostgreSQL.
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# In Windows the default installation of PostgreSQL uses that as part of the path.
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# E.g C:\Program Files\PostgreSQL\8.4.
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# Currently, the following version numbers are known to this module:
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# "9.1" "9.0" "8.4" "8.3" "8.2" "8.1" "8.0"
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#
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# To use this variable just do something like this:
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# set(PostgreSQL_ADDITIONAL_VERSIONS "9.2" "8.4.4")
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# before calling FIND_PACKAGE(PostgreSQL) in your CMakeLists.txt file.
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# This will mean that the versions you set here will be found first in the order
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# specified before the default ones are searched.
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#
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# ----------------------------------------------------------------------------
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# You may need to manually set:
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# PostgreSQL_INCLUDE_DIR - the path to where the PostgreSQL include files are.
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# PostgreSQL_LIBRARY_DIR - The path to where the PostgreSQL library files are.
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# If FindPostgreSQL.cmake cannot find the include files or the library files.
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#
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# ----------------------------------------------------------------------------
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# The following variables are set if PostgreSQL is found:
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# PostgreSQL_FOUND - Set to true when PostgreSQL is found.
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# PostgreSQL_INCLUDE_DIRS - Include directories for PostgreSQL
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# PostgreSQL_LIBRARY_DIRS - Link directories for PostgreSQL libraries
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# PostgreSQL_LIBRARIES - The PostgreSQL libraries.
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#
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# ----------------------------------------------------------------------------
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# If you have installed PostgreSQL in a non-standard location.
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# (Please note that in the following comments, it is assumed that <Your Path>
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# points to the root directory of the include directory of PostgreSQL.)
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# Then you have three options.
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# 1) After CMake runs, set PostgreSQL_INCLUDE_DIR to <Your Path>/include and
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# PostgreSQL_LIBRARY_DIR to wherever the library pq (or libpq in windows) is
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# 2) Use CMAKE_INCLUDE_PATH to set a path to <Your Path>/PostgreSQL<-version>. This will allow find_path()
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# to locate PostgreSQL_INCLUDE_DIR by utilizing the PATH_SUFFIXES option. e.g. In your CMakeLists.txt file
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# SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "<Your Path>/include")
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# 3) Set an environment variable called ${PostgreSQL_ROOT} that points to the root of where you have
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# installed PostgreSQL, e.g. <Your Path>.
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#
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# ----------------------------------------------------------------------------
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set(PostgreSQL_INCLUDE_PATH_DESCRIPTION "top-level directory containing the PostgreSQL include directories. E.g /usr/local/include/PostgreSQL/8.4 or C:/Program Files/PostgreSQL/8.4/include")
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set(PostgreSQL_INCLUDE_DIR_MESSAGE "Set the PostgreSQL_INCLUDE_DIR cmake cache entry to the ${PostgreSQL_INCLUDE_PATH_DESCRIPTION}")
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set(PostgreSQL_LIBRARY_PATH_DESCRIPTION "top-level directory containing the PostgreSQL libraries.")
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set(PostgreSQL_LIBRARY_DIR_MESSAGE "Set the PostgreSQL_LIBRARY_DIR cmake cache entry to the ${PostgreSQL_LIBRARY_PATH_DESCRIPTION}")
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set(PostgreSQL_ROOT_DIR_MESSAGE "Set the PostgreSQL_ROOT system variable to where PostgreSQL is found on the machine E.g C:/Program Files/PostgreSQL/8.4")
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set(PostgreSQL_ROOT_DIRECTORIES $ENV{PostgreSQL_ROOT})
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if(PostgreSQL_ROOT_DIRECTORIES)
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file(TO_CMAKE_PATH ${PostgreSQL_ROOT_DIRECTORIES} PostgreSQL_ROOT_DIRECTORIES)
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endif(PostgreSQL_ROOT_DIRECTORIES)
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set(PostgreSQL_KNOWN_VERSIONS ${PostgreSQL_ADDITIONAL_VERSIONS}
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"9.1" "9.0" "8.4" "8.3" "8.2" "8.1" "8.0")
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# Define additional search paths for root directories.
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if ( WIN32 )
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foreach (suffix ${PostgreSQL_KNOWN_VERSIONS} )
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set(ADDITIONAL_SEARCH_PATHS ${ADDITIONAL_SEARCH_PATHS} "C:/Program Files/PostgreSQL/${suffix}" )
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endforeach(suffix)
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endif( WIN32 )
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set( PostgreSQL_ROOT_DIRECTORIES
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${PostgreSQL_ROOT_DIRECTORIES}
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${PostgreSQL_ROOT}
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${ADDITIONAL_SEARCH_PATHS}
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)
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#
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# Look for an installation.
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#
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find_path(PostgreSQL_INCLUDE_DIR
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NAMES libpq-fe.h
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PATHS
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# Look in other places.
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${PostgreSQL_ROOT_DIRECTORIES}
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PATH_SUFFIXES
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postgresql
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include
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# Help the user find it if we cannot.
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DOC "The ${PostgreSQL_INCLUDE_DIR_MESSAGE}"
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)
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# The PostgreSQL library.
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set (PostgreSQL_LIBRARY_TO_FIND pq)
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# Setting some more prefixes for the library
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set (PostgreSQL_LIB_PREFIX "")
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if ( WIN32 )
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set (PostgreSQL_LIB_PREFIX ${PostgreSQL_LIB_PREFIX} "lib")
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set ( PostgreSQL_LIBRARY_TO_FIND ${PostgreSQL_LIB_PREFIX}${PostgreSQL_LIBRARY_TO_FIND})
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endif()
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find_library( PostgreSQL_LIBRARY
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NAMES ${PostgreSQL_LIBRARY_TO_FIND}
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PATHS
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${PostgreSQL_ROOT_DIRECTORIES}
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PATH_SUFFIXES
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lib
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)
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get_filename_component(PostgreSQL_LIBRARY_DIR ${PostgreSQL_LIBRARY} PATH)
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# Did we find anything?
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set( PostgreSQL_FOUND 0 )
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if ( EXISTS "${PostgreSQL_INCLUDE_DIR}" AND EXISTS "${PostgreSQL_LIBRARY_DIR}" )
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set( PostgreSQL_FOUND 1 )
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else ( EXISTS "${PostgreSQL_INCLUDE_DIR}" AND EXISTS "${PostgreSQL_LIBRARY_DIR}" )
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if ( POSTGRES_REQUIRED )
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message( FATAL_ERROR "PostgreSQL is required. ${PostgreSQL_ROOT_DIR_MESSAGE}" )
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endif ( POSTGRES_REQUIRED )
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endif (EXISTS "${PostgreSQL_INCLUDE_DIR}" AND EXISTS "${PostgreSQL_LIBRARY_DIR}" )
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# Now try to get the include and library path.
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if(PostgreSQL_FOUND)
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if(EXISTS "${PostgreSQL_INCLUDE_DIR}")
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set(PostgreSQL_INCLUDE_DIRS
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${PostgreSQL_INCLUDE_DIR}
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)
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endif(EXISTS "${PostgreSQL_INCLUDE_DIR}")
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if(EXISTS "${PostgreSQL_LIBRARY_DIR}")
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set(PostgreSQL_LIBRARY_DIRS
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${PostgreSQL_LIBRARY_DIR}
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)
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set(PostgreSQL_LIBRARIES ${PostgreSQL_LIBRARY_TO_FIND})
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endif(EXISTS "${PostgreSQL_LIBRARY_DIR}")
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#message("Final PostgreSQL include dir: ${PostgreSQL_INCLUDE_DIRS}")
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#message("Final PostgreSQL library dir: ${PostgreSQL_LIBRARY_DIRS}")
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#message("Final PostgreSQL libraries: ${PostgreSQL_LIBRARIES}")
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endif(PostgreSQL_FOUND)
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if(NOT PostgreSQL_FOUND)
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if(NOT PostgreSQL_FIND_QUIETLY)
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message(STATUS "PostgreSQL was not found. ${PostgreSQL_DIR_MESSAGE}")
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else(NOT PostgreSQL_FIND_QUIETLY)
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if(PostgreSQL_FIND_REQUIRED)
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message(FATAL_ERROR "PostgreSQL was not found. ${PostgreSQL_DIR_MESSAGE}")
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endif(PostgreSQL_FIND_REQUIRED)
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endif(NOT PostgreSQL_FIND_QUIETLY)
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endif(NOT PostgreSQL_FOUND)
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