Issue 2599, 2940 - Fix the presence of correct ATL version

README.md

 Adblock Plus for Internet Explorer
 ==================================
 
 This combines a Browser Helper Object with a singleton engine process to block
 ads in Internet Explorer. The engine process embeds libadblockplus.
 
+Requirements to work with the repository and the code
+-----------------------------------------------------
+
+### Python
+You need to have installed python 2.7. It should be the version available by
+default from Visual Studio as well as in your command line environment.
+Simply put, make sure that path to `python.exe` is in your `PATH` environment
+variable.
+
+### Visual C++ toolset
+There should be available v110 and v110_xp toolsets. For instance, they are
+contained in freely available Visual Studio 2012 Express for Windows Desktop
+and in any paid edition of Visual Studio 2012. Take into account that you might
+need to get the recent updates of mentioned editions, more details about
+v110_xp https://msdn.microsoft.com/en-us/library/jj851139.aspx.
+
+### ATL versions
+It works with ATL shipped with any paid edition of Visual Studio 2012 as well
+as with ATL shipped with Visual Studio 2013 Community edition.
+If you use Visual Studio 2013 Community Edition as the source of ATL then set
+`ADBLOCKPLUS_ATL` environment variable to the directory of the corresponding
+ATL (e.g, `C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\atlmfc`)
+Attention:
+- ATL is not shipped with Express edition of any Visual Studio.
+- ATL from Visual Studio 2015 is not supported.
+More information about libraies and headers in Visual Studios:
+2015 - https://msdn.microsoft.com/en-us/library/hs24szh9(v=vs.140).aspx
+2013 - https://msdn.microsoft.com/en-us/library/hs24szh9(v=vs.120).aspx
+2012 - https://msdn.microsoft.com/en-us/library/hs24szh9(v=vs.110).aspx
+
+### Visual Studio as an IDE
+Currently the project configured to work with MS Visual Studio 2012 as an IDE
+because the main development and release builds are in Visual Studio 2012.
+However one can also use any higher version of Visual Studio as and IDE, the
+caveat is to disable "Upgrade C++ Compilers and Libraries".
+
 Getting/updating the dependencies
 ---------------------------------
 
 adblockplusie has dependencies that aren't part of this repository. They are
 retrieved and updated when you're generating the VS solution for the build, but
 you can also manually update them by running the following:
 
     ./ensure_dependencies.py
 
 Building
 --------
 
-You need Microsoft Visual C++ 2012 and Python 2.7. Make sure that `python.exe` 
-is on your `PATH`. Unfortunately until we move to Visual Studio 2013  you'll
-need to use Visual Studio 2012 version that comes with ATL (Proffessional etc). 
+Building is tested on the following configurations
+- [free for everybody] "Microsoft Visual Studio Express 2012 for Windows
+Desktop" as the source of toolset with "Microsoft Visual Studio Community 2013"
+as the source of ATL. Pay attention to the configuring of the environment
+described in "ATL versions" section.
+- "Microsoft Visual Studio Professional 2012"
+- "Microsoft Visual Studio Ultimate 2012"
 
 * Execute `createsolution.bat` to retrieve dependencies and generate project
 files, this will create `build\ia32\adblockplus.sln` (solution for the 32 bit
 build) and `build\x64\adblockplus.sln` (solution for the 64 bit build). 
 Unfortunately, V8 (which is used by libadblockplus) doesn't support creating 
 both from the same project files.
 * Open `build\ia32\adblockplus.sln` or `build\x64\adblockplus.sln` in
 Visual Studio and build the solution there. Alternatively you can use the
 `msbuild` command line tool, e.g. run `msbuild /m build\ia32\adblockplus.sln`
 from the Visual Studio Developer Command Prompt to create a 32 bit debug build.
@@ skipping 20 matching lines @@
 files, this will create a bunch of project files in the _installer\build\ia32_
 and _installer\build\x64_ directories.
 * Open and build `installer\build\ia32\installer.sln` and
 `installer\build\x64\installer.sln` in Visual Studio. Alternatively you can use
 the `msbuild` command line tool, i.e. run
 `msibuild /m installer\build\ia32\adblockplus.sln` and
 `msibuild /m installer\build\x64\adblockplus.sln` from the Visual Studio
 Developer Command Prompt.
 * Either open and compile `installer\src\innosetup-exe\64BitTwoArch.iss` in
 InnoSetup or run `iscc.exe installer\src\innosetup-exe\64bitTwoArch.iss`.