Adding a FindPostgreSQL.cmake module

Modules/FindPostgreSQL.cmake

@@ -0,0 +1,167 @@
+# Find the PostgreSQL installation.
+#
+# ----------------------------------------------------------------------------
+# Usage:
+# In your CMakeLists.txt file do something like this:
+# ...
+# # PostgreSQL
+# FIND_PACKAGE(PostgreSQL)
+# ...
+# if( PostgreSQL_FOUND )
+#   include_directories(${PostgreSQL_INCLUDE_DIRS})
+#   link_directories(${PostgreSQL_LIBRARY_DIRS})
+# endif( PostgreSQL_FOUND )
+# ...
+# Remember to include ${PostgreSQL_LIBRARIES} in the target_link_libraries() statement.
+#
+#
+# In Windows, we make the assumption that, if the PostgreSQL files are installed, the default directory
+# will be C:\Program Files\PostgreSQL.
+#
+# ----------------------------------------------------------------------------
+# 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_ROOT_DIRECTORIES $ENV{PostgreSQL_ROOT})
+if(PostgreSQL_ROOT_DIRECTORIES)
+  file(TO_CMAKE_PATH ${PostgreSQL_ROOT_DIRECTORIES} PostgreSQL_ROOT_DIRECTORIES)
+endif(PostgreSQL_ROOT_DIRECTORIES)
+
+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(ADDITIONAL_SEARCH_PATHS ${ADDITIONAL_SEARCH_PATHS} "C:/Program Files/PostgreSQL/${suffix}" )
+  endforeach(suffix)
+endif( WIN32 )
+set( PostgreSQL_ROOT_DIRECTORIES
+   ${PostgreSQL_ROOT_DIRECTORIES}
+   ${PostgreSQL_ROOT}
+   ${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
+    postgresql
+    include
+  # 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 ${PostgreSQL_LIBRARY} PATH)
+
+# Did we find anything?
+set( PostgreSQL_FOUND 0 )
+if ( EXISTS "${PostgreSQL_INCLUDE_DIR}" AND EXISTS "${PostgreSQL_LIBRARY_DIR}" )
+  set( PostgreSQL_FOUND 1 )
+else ( EXISTS "${PostgreSQL_INCLUDE_DIR}" AND EXISTS "${PostgreSQL_LIBRARY_DIR}" )
+  if ( POSTGRES_REQUIRED )
+    message( FATAL_ERROR "PostgreSQL is required. ${PostgreSQL_ROOT_DIR_MESSAGE}" )
+  endif ( POSTGRES_REQUIRED )
+endif (EXISTS "${PostgreSQL_INCLUDE_DIR}" AND EXISTS "${PostgreSQL_LIBRARY_DIR}" )
+
+# Now try to get the include and library path.
+if(PostgreSQL_FOUND)
+
+  if(EXISTS "${PostgreSQL_INCLUDE_DIR}")
+    set(PostgreSQL_INCLUDE_DIRS
+      ${PostgreSQL_INCLUDE_DIR}
+    )
+  endif(EXISTS "${PostgreSQL_INCLUDE_DIR}")
+
+  if(EXISTS "${PostgreSQL_LIBRARY_DIR}")
+    set(PostgreSQL_LIBRARY_DIRS
+      ${PostgreSQL_LIBRARY_DIR}
+    )
+    set(PostgreSQL_LIBRARIES ${PostgreSQL_LIBRARY_TO_FIND})
+  endif(EXISTS "${PostgreSQL_LIBRARY_DIR}")
+
+  #message("Final PostgreSQL include dir: ${PostgreSQL_INCLUDE_DIRS}")
+  #message("Final PostgreSQL library dir: ${PostgreSQL_LIBRARY_DIRS}")
+  #message("Final PostgreSQL libraries:   ${PostgreSQL_LIBRARIES}")
+endif(PostgreSQL_FOUND)
+
+if(NOT PostgreSQL_FOUND)
+  if(NOT PostgreSQL_FIND_QUIETLY)
+    message(STATUS "PostgreSQL was not found. ${PostgreSQL_DIR_MESSAGE}")
+  else(NOT PostgreSQL_FIND_QUIETLY)
+    if(PostgreSQL_FIND_REQUIRED)
+      message(FATAL_ERROR "PostgreSQL was not found. ${PostgreSQL_DIR_MESSAGE}")
+    endif(PostgreSQL_FIND_REQUIRED)
+  endif(NOT PostgreSQL_FIND_QUIETLY)
+endif(NOT PostgreSQL_FOUND)