Build IlmBase and OpenEXR on Windows using cmake

------------------

What follows are instructions for generating Visual Studio solution 

files and building those two packages

1. Launch a command window, navigate to the IlmBase folder with 

CMakeLists.txt,and type command:

	setlocal

	del /f CMakeCache.txt

	cmake

      -DCMAKE_INSTALL_PREFIX=<where you want to install the ilmbase builds>

      -G "Visual Studio 10 Win64" 

      ..\ilmbase

2. Navigate to IlmBase folder in Windows Explorer, open ILMBase.sln

and build the solution. When it build successfully, right click 

INSTALL project and build. It will install the output to the path

you set up at the previous step.  

3. Go to http://www.zlib.net and download zlib 

4. Launch a command window, navigate to the OpenEXR folder with 

CMakeLists.txt, and type command:	  

	setlocal

	del /f CMakeCache.txt

	cmake 

      -DZLIB_ROOT=<zlib location>

      -DILMBASE_PACKAGE_PREFIX=<where you installed the ilmbase builds>

      -DCMAKE_INSTALL_PREFIX=<where you want to instal the openexr builds>

      -G "Visual Studio 10 Win64" ^

      ..\openexr

5. Navigate to OpenEXR folder in Windows Explorer, open OpenEXR.sln

and build the solution. When it build successfully, right click 

INSTALL project and build. It will install the output to the path

you set up at the previous step. 

-------------

-- OpenEXR --

-------------

initial bootstraping:

    cmake -DILMBASE_PACKAGE_PREFIX=<location of installed IlmBase files> -DCMAKE_INSTALL_PREFIX=<install location> <source location of OpenEXR>

build the actual code base:

    make -j 4

for testing do:

    make test

then to install to your chosen location:

    make install