Added some references to Proj4 and GEOS utility and source code location in the Makefile

to add context for new users.

git-svn-id: http://svn.osgeo.org/postgis/trunk@686 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/Makefile b/Makefile
index 239d3f2edea27137f33f99fb2201cf0393e157b0..874784d4b725b3491e49f5177532e3ba22e99465 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,18 @@
+#---------------------------------------------------------------
 # Configuration Directives
+#
+# We recommend that you install the Proj4 and GEOS libraries
+# referenced below to get the most use out of your PostGIS
+# database.
 
 #---------------------------------------------------------------
 # Set USE_PROJ to 1 for Proj4 reprojection support
 #
+# Reprojection allows you to transform coordinate systems
+# in the database with the Transform() function.
+#
+# Download from: http://www.remotesensing.org/proj
+#
 USE_PROJ=1
 ifeq (${PROJ_DIR},) 
        PROJ_DIR=/usr/local
@@ -12,6 +22,12 @@ endif
 # Set USE_GEOS to 1 for GEOS spatial predicate and operator
 # support
 #
+# GEOS allows you to do exact topological tests, such as
+# Intersects() and Touches(), as well as geometry operations,
+# such as Buffer(), GeomUnion() and Difference().
+#
+# Download from: http://geos.refractions.net
+#
 USE_GEOS=1
 ifeq (${GEOS_DIR},) 
        GEOS_DIR=/usr/local