CMake/Modules/FindPostgreSQL.cmake
Chuck Atkins 741f29cc00 FindPostgreSQL: Fix for pg_config in multilib configurations.
Some platforms, Fedora 20 and RHEL 7 in particular, will have multiple
pg_config_${arch}.h files all included by the top level pg_config.h.
This checks all of the available pg_config*.h headers for version
information.
2014-09-02 10:35:37 -04:00

187 lines
7.7 KiB
CMake

#.rst:
# FindPostgreSQL
# --------------
#
# Find the PostgreSQL installation.
#
# In Windows, we make the assumption that, if the PostgreSQL files are
# installed, the default directory will be C:\Program Files\PostgreSQL.
#
# This module defines
#
# ::
#
# PostgreSQL_LIBRARIES - the PostgreSQL libraries needed for linking
# PostgreSQL_INCLUDE_DIRS - the directories of the PostgreSQL headers
# PostgreSQL_VERSION_STRING - the version of PostgreSQL found (since CMake 2.8.8)
#=============================================================================
# Copyright 2004-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# ----------------------------------------------------------------------------
# History:
# This module is derived from the module originally found in the VTK source tree.
#
# ----------------------------------------------------------------------------
# Note:
# PostgreSQL_ADDITIONAL_VERSIONS is a variable that can be used to set the
# version mumber of the implementation of PostgreSQL.
# In Windows the default installation of PostgreSQL uses that as part of the path.
# E.g C:\Program Files\PostgreSQL\8.4.
# Currently, the following version numbers are known to this module:
# "9.1" "9.0" "8.4" "8.3" "8.2" "8.1" "8.0"
#
# To use this variable just do something like this:
# set(PostgreSQL_ADDITIONAL_VERSIONS "9.2" "8.4.4")
# before calling find_package(PostgreSQL) in your CMakeLists.txt file.
# This will mean that the versions you set here will be found first in the order
# specified before the default ones are searched.
#
# ----------------------------------------------------------------------------
# You may need to manually set:
# PostgreSQL_INCLUDE_DIR - the path to where the PostgreSQL include files are.
# PostgreSQL_LIBRARY_DIR - The path to where the PostgreSQL library files are.
# If FindPostgreSQL.cmake cannot find the include files or the library files.
#
# ----------------------------------------------------------------------------
# The following variables are set if PostgreSQL is found:
# PostgreSQL_FOUND - Set to true when PostgreSQL is found.
# PostgreSQL_INCLUDE_DIRS - Include directories for PostgreSQL
# PostgreSQL_LIBRARY_DIRS - Link directories for PostgreSQL libraries
# PostgreSQL_LIBRARIES - The PostgreSQL libraries.
#
# ----------------------------------------------------------------------------
# If you have installed PostgreSQL in a non-standard location.
# (Please note that in the following comments, it is assumed that <Your Path>
# points to the root directory of the include directory of PostgreSQL.)
# Then you have three options.
# 1) After CMake runs, set PostgreSQL_INCLUDE_DIR to <Your Path>/include and
# PostgreSQL_LIBRARY_DIR to wherever the library pq (or libpq in windows) is
# 2) Use CMAKE_INCLUDE_PATH to set a path to <Your Path>/PostgreSQL<-version>. This will allow find_path()
# to locate PostgreSQL_INCLUDE_DIR by utilizing the PATH_SUFFIXES option. e.g. In your CMakeLists.txt file
# set(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "<Your Path>/include")
# 3) Set an environment variable called ${PostgreSQL_ROOT} that points to the root of where you have
# installed PostgreSQL, e.g. <Your Path>.
#
# ----------------------------------------------------------------------------
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")
set(PostgreSQL_INCLUDE_DIR_MESSAGE "Set the PostgreSQL_INCLUDE_DIR cmake cache entry to the ${PostgreSQL_INCLUDE_PATH_DESCRIPTION}")
set(PostgreSQL_LIBRARY_PATH_DESCRIPTION "top-level directory containing the PostgreSQL libraries.")
set(PostgreSQL_LIBRARY_DIR_MESSAGE "Set the PostgreSQL_LIBRARY_DIR cmake cache entry to the ${PostgreSQL_LIBRARY_PATH_DESCRIPTION}")
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")
set(PostgreSQL_KNOWN_VERSIONS ${PostgreSQL_ADDITIONAL_VERSIONS}
"9.1" "9.0" "8.4" "8.3" "8.2" "8.1" "8.0")
# Define additional search paths for root directories.
if ( WIN32 )
foreach (suffix ${PostgreSQL_KNOWN_VERSIONS} )
set(PostgreSQL_ADDITIONAL_SEARCH_PATHS ${PostgreSQL_ADDITIONAL_SEARCH_PATHS} "C:/Program Files/PostgreSQL/${suffix}" )
endforeach()
endif()
set( PostgreSQL_ROOT_DIRECTORIES
ENV PostgreSQL_ROOT
${PostgreSQL_ROOT}
${PostgreSQL_ADDITIONAL_SEARCH_PATHS}
)
#
# Look for an installation.
#
find_path(PostgreSQL_INCLUDE_DIR
NAMES libpq-fe.h
PATHS
# Look in other places.
${PostgreSQL_ROOT_DIRECTORIES}
PATH_SUFFIXES
pgsql
postgresql
include
# Help the user find it if we cannot.
DOC "The ${PostgreSQL_INCLUDE_DIR_MESSAGE}"
)
find_path(PostgreSQL_TYPE_INCLUDE_DIR
NAMES catalog/pg_type.h
PATHS
# Look in other places.
${PostgreSQL_ROOT_DIRECTORIES}
PATH_SUFFIXES
postgresql
pgsql/server
postgresql/server
include/server
# Help the user find it if we cannot.
DOC "The ${PostgreSQL_INCLUDE_DIR_MESSAGE}"
)
# The PostgreSQL library.
set (PostgreSQL_LIBRARY_TO_FIND pq)
# Setting some more prefixes for the library
set (PostgreSQL_LIB_PREFIX "")
if ( WIN32 )
set (PostgreSQL_LIB_PREFIX ${PostgreSQL_LIB_PREFIX} "lib")
set ( PostgreSQL_LIBRARY_TO_FIND ${PostgreSQL_LIB_PREFIX}${PostgreSQL_LIBRARY_TO_FIND})
endif()
find_library( PostgreSQL_LIBRARY
NAMES ${PostgreSQL_LIBRARY_TO_FIND}
PATHS
${PostgreSQL_ROOT_DIRECTORIES}
PATH_SUFFIXES
lib
)
get_filename_component(PostgreSQL_LIBRARY_DIR ${PostgreSQL_LIBRARY} PATH)
if (PostgreSQL_INCLUDE_DIR)
# Some platforms include multiple pg_config.hs for multi-lib configurations
# This is a temporary workaround. A better solution would be to compile
# a dummy c file and extract the value of the symbol.
file(GLOB _PG_CONFIG_HEADERS "${PostgreSQL_INCLUDE_DIR}/pg_config*.h")
foreach(_PG_CONFIG_HEADER ${_PG_CONFIG_HEADERS})
if(EXISTS "${_PG_CONFIG_HEADER}")
file(STRINGS "${_PG_CONFIG_HEADER}" pgsql_version_str
REGEX "^#define[\t ]+PG_VERSION[\t ]+\".*\"")
if(pgsql_version_str)
string(REGEX REPLACE "^#define[\t ]+PG_VERSION[\t ]+\"([^\"]*)\".*"
"\\1" PostgreSQL_VERSION_STRING "${pgsql_version_str}")
break()
endif()
endif()
endforeach()
unset(pgsql_version_str)
endif()
# Did we find anything?
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
find_package_handle_standard_args(PostgreSQL
REQUIRED_VARS PostgreSQL_LIBRARY PostgreSQL_INCLUDE_DIR PostgreSQL_TYPE_INCLUDE_DIR
VERSION_VAR PostgreSQL_VERSION_STRING)
set( PostgreSQL_FOUND ${POSTGRESQL_FOUND})
# Now try to get the include and library path.
if(PostgreSQL_FOUND)
set(PostgreSQL_INCLUDE_DIRS ${PostgreSQL_INCLUDE_DIR} ${PostgreSQL_TYPE_INCLUDE_DIR} )
set(PostgreSQL_LIBRARY_DIRS ${PostgreSQL_LIBRARY_DIR} )
set(PostgreSQL_LIBRARIES ${PostgreSQL_LIBRARY_TO_FIND})
#message("Final PostgreSQL include dir: ${PostgreSQL_INCLUDE_DIRS}")
#message("Final PostgreSQL library dir: ${PostgreSQL_LIBRARY_DIRS}")
#message("Final PostgreSQL libraries: ${PostgreSQL_LIBRARIES}")
endif()
mark_as_advanced(PostgreSQL_INCLUDE_DIR PostgreSQL_TYPE_INCLUDE_DIR PostgreSQL_LIBRARY )