Build instructions for Win32 updated

git-svn-id: http://svn.osgeo.org/qgis/trunk@6552 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: homann

README_windows.txt

@@ -1,5 +1,6 @@
        Procedure for setup of a windows build environment for QGIS
                     Tim Sutton and Godofredo Contreras 2006
+                    CMake additions Magnus Homann 2007
   With thanks to Tisham Dhar for preparing the initial msys environment
 ---------------------------------------------------------------------------------
 
@@ -51,63 +52,50 @@ Currently you need to put it into that location in case you plan to create
 the NSIS installer because so far it contains hardcoded paths for this location.
 
 
-Source changes:
----------------
+USING CMAKE :
+-----------
 
-Next you need to shift some files around. For convenience we've made an archive
-that handles all the changes for you. Download it and unpack to qgis source directory:
+Instead of shifting around files, you could use CMake. CMake compiles
+raster, compaser, legend, gui and core libraries into one core
+library. So it is not 100% compatible with 'normal' 0.8 Makefiles.
 
-http://qgis.org/uploadfiles/msys/qgis-qmake-files.zip
+Below are the steps to configure and make the source. The building
+takes plac in a separate directory from the source. If you have built
+the source with 'normal' Makefiels first, please do a make clean (or
+remove and check out everything). Previoussly made intermediate files
+can disturb the CMake process.
 
-List of what has been changed / added by this archive to enable compilation:
+As a background read http://wiki.qgis.org/qgiswiki/Building_with_CMake
 
- - moved qgscsexception.h, qgsspatialrefsys* and qgscoordinatetransform* into core dir from gui
- - moved qgspluginregistry.* from core to gui
- - qgsspatialrefsys.cpp - commented out SRS validation using projection selector
- - 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
- - lexer and parser generated by genlexyacc.bat
- - added custom qgsconfig.h and qgssvnversion.h
+*) Make sure %QTDIR%\bin;c:\msys\local\bin;c:\msys\bin;c;\msys\mingw\bin is in your Path
 
+*) Start a cmd.exe window ( Start -> Run -> cmd.exe ) if you don't have one already.
 
-Building:
----------
+*) > mkdir build
 
-Now open the qt command shell (or start "cmd" and run c:\Qt\4.2.0\bin\qtvars.bat)
+*) > cd build
 
-cd c:\dev\cpp\qgis
-qmake
-make
+*) > cmakesetup ..
 
-This will compile both debug and release version. To make just a one of them
-use "make debug" or "make release" respectively.
+   If asked, you should chose 'MSYS Makefiles' as generator.
 
-Note: debug version uses debug version of Qt library thus if linking fails
-on not founding library QtSvgd4 (or similar), you need to compile them
-as described in section for Qt.
+   All dependencies should be picked up automatically, if you have set
+   up the Paths correctly. The only thing you need to change is the
+   installation destination and/or set 'Debug'.
 
-Running: (optional)
---------
 
-After successfull make you can run QGIS directly from the directory
-where it has been built: qgis-debug and/or qgis-release in qgis root dir.
-You only need to add data files - we have provided an archive for convenience
-which you can just unpack there and run QGIS:
+*) Now, start sh.exe and run 'make.exe install' from within that shell
 
-http://qgis.org/uploadfiles/msys/qgis_data.zip
+   It should now start compiling. The reason for this is that we use
+   the mingw compiler included in the msys tar, but that compiler is
+   not found from within sh.exe. (MSYS magic). So, if you delete
+   CMakeCache, you have to generate it from cmd.exe.
 
-Then just run qgis.exe
-
-GDB: (optional)
-----
-
-If you plan to do some debugging, download and install gdb-6.3.2.exe from 
-
-http://prdownloads.sourceforge.net/mingw/gdb-6.3-2.exe?download
-
-and install to c:\msys\mingw
+   Why not run make from cmd.exe? Because creating 'qgssvnversion.h'
+   requires the 'mv' command...
 
+*) Make sure to copy all .dll:s needed to the same directory as the
+   qgis.exe binary is installed to, if not already done so.
 
 Create the installation package: (optional)
 --------------------------------
@@ -128,3 +116,4 @@ Now using windows explorer, enter the c:\dev\cpp\qgis\win_build directory and ri
 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..
+