Backend work is start.

backends.py

@@ -474,7 +474,7 @@ class NinjaBuildElement():
 class NinjaBackend(Backend):
 
     def __init__(self, build, interp):
-        Backend.__init__(self, build, interp)
+        super().__init__(build, interp)
         self.ninja_filename = 'build.ninja'
 
     def generate(self):
@@ -1214,3 +1214,11 @@ class NinjaBackend(Backend):
         elem.write(outfile)
 
         self.generate_cppcheck_target(outfile)
+
+class Vs2010Backend(Backend):
+    def __init__(self, build, interp):
+        super().__init__(build, interp)
+
+    def generate(self):
+        sln_filename = os.path.join(self.environment.get_build_dir(), self.build.project_name + '.sln')
+        open(sln_filename, 'w')

build.py

@@ -26,6 +26,7 @@ class Build:
     """
 
     def __init__(self, environment):
+        self.project_name = 'name of master project'
         self.environment = environment
         self.projects = {}
         self.targets = {}

coredata.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import pickle, os
+import pickle, os, uuid
 
 version = '0.14.0-research'
 
@@ -23,6 +23,8 @@ version = '0.14.0-research'
 class CoreData():
 
     def __init__(self, options):
+        self.guid = str(uuid.uuid4())
+        self.target_guids = {}
         self.version = version
         self.prefix = options.prefix
         self.libdir = options.libdir

interpreter.py

@@ -19,7 +19,7 @@ import dependencies
 import mlog
 import build
 import optinterpreter
-import os, sys, platform, subprocess, shutil
+import os, sys, platform, subprocess, shutil, uuid
 
 class InterpreterException(coredata.MesonException):
     pass
@@ -857,6 +857,8 @@ class Interpreter():
         for a in args:
             if not isinstance(a, str):
                 raise InvalidArguments('Argument %s is not a string.' % str(a))
+        if self.subproject == '':
+            self.build.project_name = args[0]
         if self.subproject in self.build.projects:
             raise InvalidCode('Second call to project().')
         self.build.projects[self.subproject] = args[0]
@@ -1159,6 +1161,8 @@ class Interpreter():
         self.check_sources_exist(os.path.join(self.source_root, self.subdir), sources)
         l = targetclass(name, self.subdir, is_cross, sources, objs, self.environment, kwargs)
         self.build.targets[name] = l.held_object
+        if name not in self.coredata.target_guids:
+            self.coredata.target_guids[name] = uuid.uuid4()
         if self.environment.is_cross_build() and l.is_cross:
             txt = ' cross build '
         else:

meson.py

@@ -31,6 +31,10 @@ build_types = ['plain', 'debug', 'optimized']
 buildtype_help = 'build type, one of: %s' % ', '.join(build_types)
 buildtype_help += ' (default: %default)'
 
+backendlist = ['ninja', 'vs2010']
+backend_help = 'backend to use, one of: %s' % ', '.join(backendlist)
+backend_help += ' (default: %default)'
+
 if environment.is_windows():
     def_prefix = 'c:/'
 else:
@@ -50,8 +54,8 @@ parser.add_option('--mandir' , default='share/man', dest='mandir',
                   help='relative path of man files (default: %default)')
 parser.add_option('--localedir', default='share/locale', dest='localedir',
                   help='relative path of locale data (default: %default)')
-parser.add_option('--backend', default='ninja', dest='backend',
-                  help='the backend to use (default: %default)')
+parser.add_option('--backend', default='ninja', dest='backend', choices=backendlist,
+                  help=backend_help)
 parser.add_option('--buildtype', default='debug', type='choice', choices=build_types, dest='buildtype',
                   help=buildtype_help)
 parser.add_option('--strip', action='store_true', dest='strip', default=False,\
@@ -127,6 +131,8 @@ itself as required.'''
         intr.run()
         if options.backend == 'ninja':
             g = backends.NinjaBackend(b, intr)
+        elif options.backend == 'vs2010':
+            g = backends.Vs2010Backend(b, intr)
         else:
             raise RuntimeError('Unknown backend "%s".' % options.backend)
         g.generate()