Added readme for building under windows

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@6015 c8812cc2-4d05-0410-92ff-de0c093fc19c

README_windows.txt

@@ -0,0 +1,99 @@
+       Procedure for setup of a windows build environment for QGIS
+                    Tim Sutton and Godofredo Contreras 2005
+  With thanks to Tisham Dhar for preparing the initial msys environment
+---------------------------------------------------------------------------------
+
+This document describes the process you need to follow to get QGIS built directly
+under windows (rather than using a cross compiler under linux).
+
+Note: The process for building under windows is still being sorted out so
+      check this document regularly for updates.
+
+Msys:
+-------------
+get this : 
+
+http://qgis.org/uploadfiles/mingw/msys.rar 
+
+and unpack to c:\msys
+
+Qt4.2:
+-------------
+Download qt4.2 opensource precompiled edition exe and install (including the 
+download and install of mingw).
+
+Edit C:\Qt\4.2.0\bin\qtvars.bat and add the following line (the second is only 
+needed if you like vim in your shell):
+
+set PATH=%PATH%;C:\msys\local\bin
+set PATH=%PATH%;"c:\Program Files\Vim\vim70\
+
+
+NSIS:
+-------------
+Downlad and install NSIS from (http://nsis.sourceforge.net/Main_Page)
+
+GDB:
+-------------
+Download and install gdb-6.3.2.exe from 
+
+http://sourceforge.net/project/showfiles.php?group_id=2435 
+
+and install into c:\mingw
+
+
+QGIS:
+-------------
+Check out to c:\dev\cpp\qgis
+Currently you need to put it into that location I think - if you try to build
+somewhere else you *may* run into problems - particularly with the NSIS installer 
+as I havent checked all paths are relative yet.
+
+Next you need to shift some files around. Note I expect this requirement to go away
+once the windows build process is refined a bit.
+
+
+Core:
+-------------
+ - moved qgsspatialrefsys* and qgscoordinatetransform* into core dir from gui
+ - qgsspatialrefsys.cpp - commented out lines using qgsproject as it depends on gui stuff
+ - qgsdistancearea.cpp - commented out lines using qgsproject as it depends on 
+   gui stuff and moved to core
+
+I have created a small archive which includes the above changes, which I will make available.
+
+Gui:
+-------------
+ Temporarily disable postgres support until we heve resolved issues
+ - added #undef HAVE_POSTGRESQL to qgisapp.cpp around line 144
+ - added #undef HAVE_POSTGRESQL to qgsvectorlayerproperties.cpp around line 32
+
+ - moved qgspluginregistry.* to gui from core
+
+Building:
+-------------
+
+Now open the qt command shell
+
+cd c:\dev\cpp\qgis
+qmake
+make
+
+
+Create the installation package:
+---------------------------------
+
+Download both the QGIS debug and release installer packages from 
+
+http://qgis.org/uploadfiles/testbuilds/
+
+and install them. Now copy the installation dirs from C:\Program Files\QGIS* into 
+c:\dev\cpp\qgis\qgis-debug and c:\dev\cpp\qgis\qgis-release respectively. After
+making these copies uninstall the release and debug versions of QGIS from 
+your c:\Program Files directories using the provided uninstaller. Double check
+that both dirs are complete gone under program files afterwards.
+
+Now using windows explorer, enter the c:\dev\cpp\qgis\win_build directory and right 
+click on qgis.nsi and choose the option 'Compile NSIS Script'. Do the same 
+for qgis-debug.nsi. Congratulations you should have two installable qgis 
+setup files in the win_build directory now..