remove support for building with older Visual Studio versions

VS2013 Community Edition can be used for development of open-source
projects for free. In addition, the builds for the older versions
are not being tested (e.g. for compilation errors) so it makes sense
to standardize on VS2013.

INSTALL.md

@@ -79,8 +79,8 @@ native package (either DEB or RPM, depending on the distribution) in the
 Windows
 -------
 
-* Install Visual Studio 2008 or later ([2013 Express](http://www.microsoft.com/en-US/download/details.aspx?id=40787)
-  is recommended) or follow instructions for [Windows SDK 7.1](http://qt-project.org/wiki/Category:Tools::msvc)
+* Install Visual Studio 2013 Update 4 -- [Community Edition](http://go.microsoft.com/?linkid=9863609)
+  should also work.
 * Do "Windows Update" to ensure that VC/SDK security patches are up-to-date
 * Install the latest [ActivePerl](http://www.activestate.com/activeperl/downloads) release
 * Install the latest [Python 2.7](http://www.python.org/downloads/windows/) release
@@ -90,20 +90,15 @@ Windows
 
 Target          | Building 32-bit binaries               |  Building 64-bit binaries
 ------          | ------------------------               |  ------------------------
-MSVC 2008       | `scripts\build.py msvc2008-win32`      | `scripts/build.py msvc2008-win64`
-MSVC 2010       | `scripts\build.py msvc2010-win32`      | `scripts/build.py msvc2010-win64`
-MSVC 2012       | `scripts\build.py msvc2012-win32`      | `scripts/build.py msvc2012-win64`
 MSVC 2013       | `scripts\build.py msvc2013-win32`      | `scripts/build.py msvc2013-win64`
-Windows SDK 7.1 | `scripts\build.py msvc-winsdk71-win32` | `scripts\build.py msvc-winsdk71-win64`
 
 During the build, a working internet connection is required to download and
 compile the dependent libraries (e.g. OpenSSL). The output installers should
 be generated in the `static-build` folder.
 
 Please note that if you want to target Windows XP/Windows 2003 (i.e. NT 5.x)
-you should use the MinGW-w64 builds cross-compiled from Linux or use MSVC 2008,
-MSVC 2010 or Windows SDK 7.1 -- MSVC 2012 or later target Windows Vista (i.e.
-NT 6.x) by default.
+you should use the MinGW-w64 builds cross-compiled from Linux as the MSVC builds
+target Windows Vista or later (i.e. NT 6.x) by default.
 
 OS X
 ----

scripts/build.py

@@ -21,16 +21,8 @@
 
 BUILDERS = {
     'source-tarball':        'source_tarball',
-    'msvc2008-win32':        'msvc',
-    'msvc2008-win64':        'msvc',
-    'msvc2010-win32':        'msvc',
-    'msvc2010-win64':        'msvc',
-    'msvc2012-win32':        'msvc',
-    'msvc2012-win64':        'msvc',
     'msvc2013-win32':        'msvc',
     'msvc2013-win64':        'msvc',
-    'msvc-winsdk71-win32':   'msvc_winsdk71',
-    'msvc-winsdk71-win64':   'msvc_winsdk71',
     'setup-mingw-w64':       'setup_mingw64',
     'setup-schroot-centos5': 'setup_schroot',
     'setup-schroot-centos6': 'setup_schroot',
@@ -821,12 +813,9 @@ def build_source_tarball(config, basedir):
         tar.add('.', 'wkhtmltox-%s/' % version, filter=_filter_tar)
     shell('git reset --hard HEAD')
 
-# --------------------------------------------------------------- MSVC (2008-2013)
+# --------------------------------------------------------------- MSVC (2013 only)
 
 MSVC_LOCATION = {
-    'msvc2008': 'VS90COMNTOOLS',
-    'msvc2010': 'VS100COMNTOOLS',
-    'msvc2012': 'VS110COMNTOOLS',
     'msvc2013': 'VS120COMNTOOLS'
 }
 
@@ -867,43 +856,6 @@ def build_msvc(config, basedir):
 
     os.environ.update(eval(stdout.strip()))
 
-    build_msvc_common(config, basedir)
-
-# --------------------------------------------------------------- MSVC via Windows SDK 7.1
-
-def check_msvc_winsdk71(config):
-    for pfile in ['ProgramFiles(x86)', 'ProgramFiles']:
-        if pfile in os.environ and exists(os.path.join(os.environ[pfile], 'Microsoft SDKs', 'Windows', 'v7.1', 'Bin', 'SetEnv.cmd')):
-            return
-    error("Unable to detect the location of Windows SDK 7.1")
-
-def build_msvc_winsdk71(config, basedir):
-    arch = config[config.rindex('-'):]
-    setenv = None
-    for pfile in ['ProgramFiles(x86)', 'ProgramFiles']:
-        if not pfile in os.environ:
-            continue
-        setenv = os.path.join(os.environ[pfile], 'Microsoft SDKs', 'Windows', 'v7.1', 'Bin', 'SetEnv.cmd')
-
-    mode = debug and '/Debug' or '/Release'
-    if arch == 'win64':
-        args = '/2008 /x64 %s' % mode
-    else:
-        args = '/2008 /x86 %s' % mode
-
-    python = sys.executable
-    process = subprocess.Popen('("%s" %s>nul)&&"%s" -c "import os, sys; sys.stdout.write(repr(dict(os.environ)))"' % (
-        setenv, args, python), stdout=subprocess.PIPE, shell=True)
-    stdout, _ = process.communicate()
-    exitcode = process.wait()
-    if exitcode != 0:
-        error("unable to initialize the environment for Windows SDK 7.1")
-
-    os.environ.update(eval(stdout.strip()))
-
-    build_msvc_common(config, basedir)
-
-def build_msvc_common(config, basedir):
     version, simple_version = get_version(basedir)
     build_deplibs(config, basedir)