diff --git a/mesonbuild/backend/backends.py b/mesonbuild/backend/backends.py
index 46f856351..7372c4c69 100644
--- a/mesonbuild/backend/backends.py
+++ b/mesonbuild/backend/backends.py
@@ -215,13 +215,13 @@ class Backend:
         exe_data = os.path.join(self.environment.get_scratch_dir(), scratch_file)
         with open(exe_data, 'wb') as f:
             if isinstance(exe, dependencies.ExternalProgram):
-                exe_fullpath = exe.fullpath
+                exe_cmd = exe.get_command()
                 exe_needs_wrapper = False
             elif isinstance(exe, (build.BuildTarget, build.CustomTarget)):
-                exe_fullpath = [self.get_target_filename_abs(exe)]
+                exe_cmd = [self.get_target_filename_abs(exe)]
                 exe_needs_wrapper = exe.is_cross
             else:
-                exe_fullpath = [exe]
+                exe_cmd = [exe]
                 exe_needs_wrapper = False
             is_cross = exe_needs_wrapper and \
                 self.environment.is_cross_build() and \
@@ -235,7 +235,7 @@ class Backend:
                 extra_paths = self.determine_windows_extra_paths(exe)
             else:
                 extra_paths = []
-            es = ExecutableSerialisation(basename, exe_fullpath, cmd_args, env,
+            es = ExecutableSerialisation(basename, exe_cmd, cmd_args, env,
                                          is_cross, exe_wrapper, workdir,
                                          extra_paths, capture)
             pickle.dump(es, f)
@@ -444,9 +444,9 @@ class Backend:
         for t in tests:
             exe = t.get_exe()
             if isinstance(exe, dependencies.ExternalProgram):
-                fname = exe.fullpath
+                cmd = exe.get_command()
             else:
-                fname = [os.path.join(self.environment.get_build_dir(), self.get_target_filename(t.get_exe()))]
+                cmd = [os.path.join(self.environment.get_build_dir(), self.get_target_filename(t.get_exe()))]
             is_cross = self.environment.is_cross_build() and \
                 self.environment.cross_info.need_cross_compiler() and \
                 self.environment.cross_info.need_exe_wrapper()
@@ -471,7 +471,7 @@ class Backend:
                     cmd_args.append(self.get_target_filename(a))
                 else:
                     raise MesonException('Bad object in test command.')
-            ts = TestSerialisation(t.get_name(), t.suite, fname, is_cross, exe_wrapper,
+            ts = TestSerialisation(t.get_name(), t.suite, cmd, is_cross, exe_wrapper,
                                    t.is_parallel, cmd_args, t.env, t.should_fail,
                                    t.timeout, t.workdir, extra_paths)
             arr.append(ts)
diff --git a/mesonbuild/backend/ninjabackend.py b/mesonbuild/backend/ninjabackend.py
index a22e0aba2..27e1e9aa7 100644
--- a/mesonbuild/backend/ninjabackend.py
+++ b/mesonbuild/backend/ninjabackend.py
@@ -30,9 +30,11 @@ from collections import OrderedDict
 if mesonlib.is_windows():
     quote_char = '"'
     execute_wrapper = 'cmd /c'
+    rmfile_prefix = 'del /f /s /q {} &&'
 else:
     quote_char = "'"
     execute_wrapper = ''
+    rmfile_prefix = 'rm -f {} &&'
 
 def ninja_quote(text):
     return text.replace(' ', '$ ').replace(':', '$:')
@@ -1238,10 +1240,16 @@ int dummy;
 '''
         else:
             command_template = ' command = {executable} $LINK_ARGS {output_args} $in\n'
+        cmdlist = []
+        if isinstance(static_linker, compilers.ArLinker):
+            # `ar` has no options to overwrite archives. It always appends,
+            # which is never what we want. Delete an existing library first if
+            # it exists. https://github.com/mesonbuild/meson/issues/1355
+            cmdlist = [execute_wrapper, rmfile_prefix.format('$out')]
+        cmdlist += static_linker.get_exelist()
         command = command_template.format(
-            executable=' '.join(static_linker.get_exelist()),
-            output_args=' '.join(static_linker.get_output_args('$out'))
-        )
+            executable=' '.join(cmdlist),
+            output_args=' '.join(static_linker.get_output_args('$out')))
         description = ' description = Static linking library $out\n\n'
         outfile.write(rule)
         outfile.write(command)
diff --git a/mesonbuild/backend/vs2010backend.py b/mesonbuild/backend/vs2010backend.py
index 666da7d65..547889c02 100644
--- a/mesonbuild/backend/vs2010backend.py
+++ b/mesonbuild/backend/vs2010backend.py
@@ -395,7 +395,7 @@ class Vs2010Backend(backends.Backend):
             if isinstance(i, build.BuildTarget):
                 cmd.append(os.path.join(self.environment.get_build_dir(), self.get_target_filename(i)))
             elif isinstance(i, dependencies.ExternalProgram):
-                cmd += i.fullpath
+                cmd += i.get_command()
             else:
                 cmd.append(i)
         cmd_templ = '''"%s" ''' * len(cmd)
diff --git a/mesonbuild/dependencies.py b/mesonbuild/dependencies.py
index 9525ffa34..e4317f1e1 100644
--- a/mesonbuild/dependencies.py
+++ b/mesonbuild/dependencies.py
@@ -120,8 +120,8 @@ class PkgConfigDependency(Dependency):
                 if self.required:
                     raise DependencyException('Pkg-config binary missing from cross file')
             else:
-                potential_pkgbin = ExternalProgram(environment.cross_info.config['binaries'].get('pkgconfig', 'non_existing_binary'),
-                                                   silent=True)
+                pkgname = environment.cross_info.config['binaries']['pkgconfig']
+                potential_pkgbin = ExternalProgram(pkgname, silent=True)
                 if potential_pkgbin.found():
                     # FIXME, we should store all pkg-configs in ExternalPrograms.
                     # However that is too destabilizing a change to do just before release.
@@ -402,24 +402,28 @@ class WxDependency(Dependency):
         return self.is_found
 
 class ExternalProgram:
-    windows_exts = ('exe', 'com', 'bat')
+    windows_exts = ('exe', 'msc', 'com', 'bat')
 
-    def __init__(self, name, fullpath=None, silent=False, search_dir=None):
+    def __init__(self, name, command=None, silent=False, search_dir=None):
         self.name = name
-        if fullpath is not None:
-            if not isinstance(fullpath, list):
-                self.fullpath = [fullpath]
+        if command is not None:
+            if not isinstance(command, list):
+                self.command = [command]
             else:
-                self.fullpath = fullpath
+                self.command = command
         else:
-            self.fullpath = self._search(name, search_dir)
+            self.command = self._search(name, search_dir)
         if not silent:
             if self.found():
                 mlog.log('Program', mlog.bold(name), 'found:', mlog.green('YES'),
-                         '(%s)' % ' '.join(self.fullpath))
+                         '(%s)' % ' '.join(self.command))
             else:
                 mlog.log('Program', mlog.bold(name), 'found:', mlog.red('NO'))
 
+    def __repr__(self):
+        r = '<{} {!r} -> {!r}>'
+        return r.format(self.__class__.__name__, self.name, self.command)
+
     @staticmethod
     def _shebang_to_cmd(script):
         """
@@ -473,34 +477,63 @@ class ExternalProgram:
         return self._shebang_to_cmd(trial)
 
     def _search(self, name, search_dir):
+        '''
+        Search in the specified dir for the specified executable by name
+        and if not found search in PATH
+        '''
         commands = self._search_dir(name, search_dir)
         if commands:
             return commands
         # Do a standard search in PATH
-        fullpath = shutil.which(name)
-        if fullpath or not mesonlib.is_windows():
+        command = shutil.which(name)
+        if not mesonlib.is_windows():
             # On UNIX-like platforms, the standard PATH search is enough
-            return [fullpath]
-        # On Windows, if name is an absolute path, we need the extension too
-        for ext in self.windows_exts:
-            fullpath = '{}.{}'.format(name, ext)
-            if os.path.exists(fullpath):
-                return [fullpath]
-        # On Windows, interpreted scripts must have an extension otherwise they
-        # cannot be found by a standard PATH search. So we do a custom search
-        # where we manually search for a script with a shebang in PATH.
-        search_dirs = os.environ.get('PATH', '').split(';')
-        for search_dir in search_dirs:
-            commands = self._search_dir(name, search_dir)
+            return [command]
+        # HERE BEGINS THE TERROR OF WINDOWS
+        if command:
+            # On Windows, even if the PATH search returned a full path, we can't be
+            # sure that it can be run directly if it's not a native executable.
+            # For instance, interpreted scripts sometimes need to be run explicitly
+            # with an interpreter if the file association is not done properly.
+            name_ext = os.path.splitext(command)[1]
+            if name_ext[1:].lower() in self.windows_exts:
+                # Good, it can be directly executed
+                return [command]
+            # Try to extract the interpreter from the shebang
+            commands = self._shebang_to_cmd(command)
             if commands:
                 return commands
+        else:
+            # Maybe the name is an absolute path to a native Windows
+            # executable, but without the extension. This is technically wrong,
+            # but many people do it because it works in the MinGW shell.
+            if os.path.isabs(name):
+                for ext in self.windows_exts:
+                    command = '{}.{}'.format(name, ext)
+                    if os.path.exists(command):
+                        return [command]
+            # On Windows, interpreted scripts must have an extension otherwise they
+            # cannot be found by a standard PATH search. So we do a custom search
+            # where we manually search for a script with a shebang in PATH.
+            search_dirs = os.environ.get('PATH', '').split(';')
+            for search_dir in search_dirs:
+                commands = self._search_dir(name, search_dir)
+                if commands:
+                    return commands
         return [None]
 
     def found(self):
-        return self.fullpath[0] is not None
+        return self.command[0] is not None
 
     def get_command(self):
-        return self.fullpath[:]
+        return self.command[:]
+
+    def get_path(self):
+        # Assume that the last element is the full path to the script
+        # If it's not a script, this will be an array of length 1
+        if self.found():
+            return self.command[-1]
+        return None
 
     def get_name(self):
         return self.name
@@ -531,6 +564,9 @@ class ExternalLibrary(Dependency):
     def found(self):
         return self.is_found
 
+    def get_name(self):
+        return self.name
+
     def get_link_args(self):
         return self.link_args
 
@@ -994,7 +1030,7 @@ class QtBaseDependency(Dependency):
             if not self.qmake.found():
                 continue
             # Check that the qmake is for qt5
-            pc, stdo = Popen_safe(self.qmake.fullpath + ['-v'])[0:2]
+            pc, stdo = Popen_safe(self.qmake.get_command() + ['-v'])[0:2]
             if pc.returncode != 0:
                 continue
             if not 'Qt version ' + self.qtver in stdo:
@@ -1007,7 +1043,7 @@ class QtBaseDependency(Dependency):
             return
         self.version = re.search(self.qtver + '(\.\d+)+', stdo).group(0)
         # Query library path, header path, and binary path
-        stdo = Popen_safe(self.qmake.fullpath + ['-query'])[1]
+        stdo = Popen_safe(self.qmake.get_command() + ['-query'])[1]
         qvars = {}
         for line in stdo.split('\n'):
             line = line.strip()
diff --git a/mesonbuild/interpreter.py b/mesonbuild/interpreter.py
index 224f98ede..f6065d5a0 100644
--- a/mesonbuild/interpreter.py
+++ b/mesonbuild/interpreter.py
@@ -285,16 +285,16 @@ class ExternalProgramHolder(InterpreterObject):
         return self.found()
 
     def path_method(self, args, kwargs):
-        return self.get_command()
+        return self.held_object.get_path()
 
     def found(self):
         return self.held_object.found()
 
     def get_command(self):
-        return self.held_object.fullpath
+        return self.held_object.get_command()
 
     def get_name(self):
-        return self.held_object.name
+        return self.held_object.get_name()
 
 class ExternalLibraryHolder(InterpreterObject):
     def __init__(self, el):
@@ -308,9 +308,6 @@ class ExternalLibraryHolder(InterpreterObject):
     def found_method(self, args, kwargs):
         return self.found()
 
-    def get_filename(self):
-        return self.held_object.fullpath
-
     def get_name(self):
         return self.held_object.name
 
@@ -1424,7 +1421,8 @@ class Interpreter(InterpreterBase):
         elif isinstance(cmd, str):
             cmd = [cmd]
         else:
-            raise InterpreterException('First argument is of incorrect type.')
+            raise InterpreterException('First argument should be find_program() '
+                                       'or string, not {!r}'.format(cmd))
         expanded_args = []
         for a in mesonlib.flatten(cargs):
             if isinstance(a, str):
@@ -1759,7 +1757,6 @@ class Interpreter(InterpreterBase):
                     break
             self.coredata.base_options[optname] = oobj
 
-    @stringArgs
     def func_find_program(self, node, args, kwargs):
         if len(args) == 0:
             raise InterpreterException('No program name specified.')
@@ -1769,8 +1766,21 @@ class Interpreter(InterpreterBase):
         # Search for scripts relative to current subdir.
         # Do not cache found programs because find_program('foobar')
         # might give different results when run from different source dirs.
-        search_dir = os.path.join(self.environment.get_source_dir(), self.subdir)
+        source_dir = os.path.join(self.environment.get_source_dir(), self.subdir)
         for exename in args:
+            if isinstance(exename, mesonlib.File):
+                if exename.is_built:
+                    search_dir = os.path.join(self.environment.get_build_dir(),
+                                              exename.subdir)
+                else:
+                    search_dir = os.path.join(self.environment.get_source_dir(),
+                                              exename.subdir)
+                exename = exename.fname
+            elif isinstance(exename, str):
+                search_dir = source_dir
+            else:
+                raise InvalidArguments('find_program only accepts strings and '
+                                       'files, not {!r}'.format(exename))
             extprog = dependencies.ExternalProgram(exename, search_dir=search_dir)
             progobj = ExternalProgramHolder(extprog)
             if progobj.found():
diff --git a/mesonbuild/mintro.py b/mesonbuild/mintro.py
index e30500f2b..6eab76e46 100644
--- a/mesonbuild/mintro.py
+++ b/mesonbuild/mintro.py
@@ -23,6 +23,7 @@ import json, pickle
 from . import coredata, build
 import argparse
 import sys, os
+import pathlib
 
 parser = argparse.ArgumentParser()
 parser.add_argument('--targets', action='store_true', dest='list_targets', default=False,
@@ -56,7 +57,9 @@ def determine_installed_path(target, installdata):
     fname = i[0]
     outdir = i[1]
     outname = os.path.join(installdata.prefix, outdir, os.path.split(fname)[-1])
-    return outname
+    # Normalize the path by using os.path.sep consistently, etc.
+    # Does not change the effective path.
+    return str(pathlib.PurePath(outname))
 
 
 def list_installed(installdata):
@@ -111,23 +114,11 @@ def list_target_files(target_name, coredata, builddata):
     print(json.dumps(sources))
 
 def list_buildoptions(coredata, builddata):
-    buildtype = {'choices': ['plain', 'debug', 'debugoptimized', 'release', 'minsize'],
-                 'type': 'combo',
-                 'value': coredata.get_builtin_option('buildtype'),
-                 'description': 'Build type',
-                 'name': 'type'}
-    strip = {'value': coredata.get_builtin_option('strip'),
-             'type': 'boolean',
-             'description': 'Strip on install',
-             'name': 'strip'}
-    unity = {'value': coredata.get_builtin_option('unity'),
-             'type': 'boolean',
-             'description': 'Unity build',
-             'name': 'unity'}
-    optlist = [buildtype, strip, unity]
+    optlist = []
     add_keys(optlist, coredata.user_options)
     add_keys(optlist, coredata.compiler_options)
     add_keys(optlist, coredata.base_options)
+    add_keys(optlist, coredata.builtins)
     print(json.dumps(optlist))
 
 def add_keys(optlist, options):
diff --git a/mesonbuild/modules/qt4.py b/mesonbuild/modules/qt4.py
index 33c9f806e..714673948 100644
--- a/mesonbuild/modules/qt4.py
+++ b/mesonbuild/modules/qt4.py
@@ -48,7 +48,7 @@ class Qt4Module(ExtensionModule):
                 raise MesonException('Moc preprocessor is not for Qt 4. Output:\n%s\n%s' %
                                      (stdout, stderr))
             mlog.log(' moc:', mlog.green('YES'), '(%s, %s)' %
-                     (' '.join(self.moc.fullpath), moc_ver.split()[-1]))
+                     (self.moc.get_path(), moc_ver.split()[-1]))
         else:
             mlog.log(' moc:', mlog.red('NO'))
         if self.uic.found():
@@ -61,7 +61,7 @@ class Qt4Module(ExtensionModule):
                 raise MesonException('Uic compiler is not for Qt4. Output:\n%s\n%s' %
                                      (stdout, stderr))
             mlog.log(' uic:', mlog.green('YES'), '(%s, %s)' %
-                     (' '.join(self.uic.fullpath), uic_ver.split()[-1]))
+                     (self.uic.get_path(), uic_ver.split()[-1]))
         else:
             mlog.log(' uic:', mlog.red('NO'))
         if self.rcc.found():
@@ -74,7 +74,7 @@ class Qt4Module(ExtensionModule):
                 raise MesonException('Rcc compiler is not for Qt 4. Output:\n%s\n%s' %
                                      (stdout, stderr))
             mlog.log(' rcc:', mlog.green('YES'), '(%s, %s)'
-                     % (' '.join(self.rcc.fullpath), rcc_ver.split()[-1]))
+                     % (self.rcc.get_path(), rcc_ver.split()[-1]))
         else:
             mlog.log(' rcc:', mlog.red('NO'))
         self.tools_detected = True
diff --git a/mesonbuild/modules/qt5.py b/mesonbuild/modules/qt5.py
index b4f14759e..2a87a8016 100644
--- a/mesonbuild/modules/qt5.py
+++ b/mesonbuild/modules/qt5.py
@@ -50,7 +50,7 @@ class Qt5Module(ExtensionModule):
                 raise MesonException('Moc preprocessor is not for Qt 5. Output:\n%s\n%s' %
                                      (stdout, stderr))
             mlog.log(' moc:', mlog.green('YES'), '(%s, %s)' %
-                     (' '.join(self.moc.fullpath), moc_ver.split()[-1]))
+                     (self.moc.get_path(), moc_ver.split()[-1]))
         else:
             mlog.log(' moc:', mlog.red('NO'))
         if self.uic.found():
@@ -65,7 +65,7 @@ class Qt5Module(ExtensionModule):
                 raise MesonException('Uic compiler is not for Qt 5. Output:\n%s\n%s' %
                                      (stdout, stderr))
             mlog.log(' uic:', mlog.green('YES'), '(%s, %s)' %
-                     (' '.join(self.uic.fullpath), uic_ver.split()[-1]))
+                     (self.uic.get_path(), uic_ver.split()[-1]))
         else:
             mlog.log(' uic:', mlog.red('NO'))
         if self.rcc.found():
@@ -80,7 +80,7 @@ class Qt5Module(ExtensionModule):
                 raise MesonException('Rcc compiler is not for Qt 5. Output:\n%s\n%s' %
                                      (stdout, stderr))
             mlog.log(' rcc:', mlog.green('YES'), '(%s, %s)'
-                     % (' '.join(self.rcc.fullpath), rcc_ver.split()[-1]))
+                     % (self.rcc.get_path(), rcc_ver.split()[-1]))
         else:
             mlog.log(' rcc:', mlog.red('NO'))
         self.tools_detected = True
diff --git a/mesonbuild/modules/rpm.py b/mesonbuild/modules/rpm.py
index bd8a3c474..bbfeaa06d 100644
--- a/mesonbuild/modules/rpm.py
+++ b/mesonbuild/modules/rpm.py
@@ -98,17 +98,18 @@ class RPMModule(ExtensionModule):
             for dep in state.environment.coredata.deps:
                 fn.write('BuildRequires: pkgconfig(%s)\n' % dep[0])
             for lib in state.environment.coredata.ext_libs.values():
-                fn.write('BuildRequires: %s # FIXME\n' % lib.fullpath)
-                mlog.warning('replace', mlog.bold(lib.fullpath), 'with real package.',
+                name = lib.get_name()
+                fn.write('BuildRequires: {} # FIXME\n'.format(name))
+                mlog.warning('replace', mlog.bold(name), 'with the real package.',
                              'You can use following command to find package which '
                              'contains this lib:',
-                             mlog.bold('dnf provides %s' % lib.fullpath))
+                             mlog.bold("dnf provides '*/lib{}.so".format(name))
             for prog in state.environment.coredata.ext_progs.values():
                 if not prog.found():
                     fn.write('BuildRequires: %%{_bindir}/%s # FIXME\n' %
                              prog.get_name())
                 else:
-                    fn.write('BuildRequires: %s\n' % ' '.join(prog.fullpath))
+                    fn.write('BuildRequires: {}\n'.format(prog.get_path()))
             fn.write('BuildRequires: meson\n')
             fn.write('\n')
             fn.write('%description\n')
diff --git a/run_tests.py b/run_tests.py
index 005717e07..f2038e4cb 100755
--- a/run_tests.py
+++ b/run_tests.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-# Copyright 2012-2016 The Meson development team
+# Copyright 2012-2017 The Meson development team
 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -21,10 +21,12 @@ from mesonbuild import mesonlib
 if __name__ == '__main__':
     returncode = 0
     print('Running unittests.\n')
+    units = ['InternalTests', 'AllPlatformTests']
     if mesonlib.is_linux():
-        returncode += subprocess.call([sys.executable, 'run_unittests.py', '-v'])
-    else:
-        returncode += subprocess.call([sys.executable, 'run_unittests.py', '-v', 'InternalTests'])
+        units += ['LinuxlikeTests']
+    elif mesonlib.is_windows():
+        units += ['WindowsTests']
+    returncode += subprocess.call([sys.executable, 'run_unittests.py', '-v'] + units)
     # Ubuntu packages do not have a binary without -6 suffix.
     if shutil.which('arm-linux-gnueabihf-gcc-6') and not platform.machine().startswith('arm'):
         print('Running cross compilation tests.\n')
diff --git a/run_unittests.py b/run_unittests.py
index aed1412cc..95e52e3b1 100755
--- a/run_unittests.py
+++ b/run_unittests.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright 2016 The Meson development team
+# Copyright 2016-2017 The Meson development team
 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -18,14 +18,20 @@ import shlex
 import subprocess
 import re, json
 import tempfile
-import pathlib
 import unittest, os, sys, shutil, time
 from glob import glob
+from pathlib import PurePath
 import mesonbuild.compilers
 import mesonbuild.environment
 import mesonbuild.mesonlib
+from mesonbuild.mesonlib import is_windows
 from mesonbuild.environment import detect_ninja, Environment
-from mesonbuild.dependencies import PkgConfigDependency
+from mesonbuild.dependencies import PkgConfigDependency, ExternalProgram
+
+if is_windows():
+    exe_suffix = '.exe'
+else:
+    exe_suffix = ''
 
 def get_soname(fname):
     # HACK, fix to not use shell.
@@ -172,15 +178,18 @@ class InternalTests(unittest.TestCase):
         self.assertEqual(commonpath(['blam', 'bin']), '')
         prefix = '/some/path/to/prefix'
         libdir = '/some/path/to/prefix/libdir'
-        self.assertEqual(commonpath([prefix, libdir]), str(pathlib.PurePath(prefix)))
+        self.assertEqual(commonpath([prefix, libdir]), str(PurePath(prefix)))
 
 
-class LinuxlikeTests(unittest.TestCase):
+class BasePlatformTests(unittest.TestCase):
     def setUp(self):
         super().setUp()
         src_root = os.path.dirname(__file__)
         src_root = os.path.join(os.getcwd(), src_root)
-        self.builddir = tempfile.mkdtemp()
+        self.src_root = src_root
+        # In case the directory is inside a symlinked directory, find the real
+        # path otherwise we might not find the srcdir from inside the builddir.
+        self.builddir = os.path.realpath(tempfile.mkdtemp())
         self.logdir = os.path.join(self.builddir, 'meson-logs')
         self.prefix = '/usr'
         self.libdir = os.path.join(self.prefix, 'lib')
@@ -194,7 +203,6 @@ class LinuxlikeTests(unittest.TestCase):
         self.vala_test_dir = os.path.join(src_root, 'test cases/vala')
         self.framework_test_dir = os.path.join(src_root, 'test cases/frameworks')
         self.unit_test_dir = os.path.join(src_root, 'test cases/unit')
-        self.output = b''
         self.orig_env = os.environ.copy()
 
     def tearDown(self):
@@ -203,20 +211,26 @@ class LinuxlikeTests(unittest.TestCase):
         super().tearDown()
 
     def _run(self, command):
-        self.output += subprocess.check_output(command, stderr=subprocess.STDOUT,
-                                               env=os.environ.copy())
+        output = subprocess.check_output(command, stderr=subprocess.STDOUT,
+                                         env=os.environ.copy(),
+                                         universal_newlines=True)
+        print(output)
+        return output
 
-    def init(self, srcdir, extra_args=None):
+    def init(self, srcdir, extra_args=None, default_args=True):
         if extra_args is None:
             extra_args = []
-        args = [srcdir, self.builddir,
-                '--prefix', self.prefix,
-                '--libdir', self.libdir]
+        args = [srcdir, self.builddir]
+        if default_args:
+            args += ['--prefix', self.prefix,
+                     '--libdir', self.libdir]
         self._run(self.meson_command + args + extra_args)
         self.privatedir = os.path.join(self.builddir, 'meson-private')
 
-    def build(self):
-        self._run(self.ninja_command)
+    def build(self, extra_args=None):
+        if extra_args is None:
+            extra_args = []
+        self._run(self.ninja_command + extra_args)
 
     def run_tests(self):
         self._run(self.ninja_command + ['test'])
@@ -229,9 +243,18 @@ class LinuxlikeTests(unittest.TestCase):
         self._run(self.ninja_command + ['uninstall'])
 
     def run_target(self, target):
-        self.output += subprocess.check_output(self.ninja_command + [target])
+        output = subprocess.check_output(self.ninja_command + [target],
+                                         stderr=subprocess.STDOUT,
+                                         universal_newlines=True)
+        print(output)
+        return output
 
-    def setconf(self, arg):
+    def setconf(self, arg, will_build=True):
+        # This is needed to increase the difference between build.ninja's
+        # timestamp and coredata.dat's timestamp due to a Ninja bug.
+        # https://github.com/ninja-build/ninja/issues/371
+        if will_build:
+            time.sleep(1)
         self._run(self.mconf_command + [arg, self.builddir])
 
     def wipe(self):
@@ -260,6 +283,336 @@ class LinuxlikeTests(unittest.TestCase):
                                       universal_newlines=True)
         return json.loads(out)
 
+    def assertPathEqual(self, path1, path2):
+        '''
+        Handles a lot of platform-specific quirks related to paths such as
+        separator, case-sensitivity, etc.
+        '''
+        self.assertEqual(PurePath(path1), PurePath(path2))
+
+    def assertPathBasenameEqual(self, path, basename):
+        msg = '{!r} does not end with {!r}'.format(path, basename)
+        # We cannot use os.path.basename because it returns '' when the path
+        # ends with '/' for some silly reason. This is not how the UNIX utility
+        # `basename` works.
+        path_basename = PurePath(path).parts[-1]
+        self.assertEqual(PurePath(path_basename), PurePath(basename), msg)
+
+
+class AllPlatformTests(BasePlatformTests):
+    '''
+    Tests that should run on all platforms
+    '''
+    def test_default_options_prefix(self):
+        '''
+        Tests that setting a prefix in default_options in project() works.
+        Can't be an ordinary test because we pass --prefix to meson there.
+        https://github.com/mesonbuild/meson/issues/1349
+        '''
+        testdir = os.path.join(self.common_test_dir, '94 default options')
+        self.init(testdir, default_args=False)
+        opts = self.introspect('--buildoptions')
+        for opt in opts:
+            if opt['name'] == 'prefix':
+                prefix = opt['value']
+        self.assertEqual(prefix, '/absoluteprefix')
+
+    def test_absolute_prefix_libdir(self):
+        '''
+        Tests that setting absolute paths for --prefix and --libdir work. Can't
+        be an ordinary test because these are set via the command-line.
+        https://github.com/mesonbuild/meson/issues/1341
+        https://github.com/mesonbuild/meson/issues/1345
+        '''
+        testdir = os.path.join(self.common_test_dir, '94 default options')
+        prefix = '/someabs'
+        libdir = 'libdir'
+        extra_args = ['--prefix=' + prefix,
+                      # This can just be a relative path, but we want to test
+                      # that passing this as an absolute path also works
+                      '--libdir=' + prefix + '/' + libdir]
+        self.init(testdir, extra_args, default_args=False)
+        opts = self.introspect('--buildoptions')
+        for opt in opts:
+            if opt['name'] == 'prefix':
+                self.assertEqual(prefix, opt['value'])
+            elif opt['name'] == 'libdir':
+                self.assertEqual(libdir, opt['value'])
+
+    def test_libdir_must_be_inside_prefix(self):
+        '''
+        Tests that libdir is forced to be inside prefix no matter how it is set.
+        Must be a unit test for obvious reasons.
+        '''
+        testdir = os.path.join(self.common_test_dir, '1 trivial')
+        # libdir being inside prefix is ok
+        args = ['--prefix', '/opt', '--libdir', '/opt/lib32']
+        self.init(testdir, args)
+        self.wipe()
+        # libdir not being inside prefix is not ok
+        args = ['--prefix', '/usr', '--libdir', '/opt/lib32']
+        self.assertRaises(subprocess.CalledProcessError, self.init, testdir, args)
+        self.wipe()
+        # libdir must be inside prefix even when set via mesonconf
+        self.init(testdir)
+        self.assertRaises(subprocess.CalledProcessError, self.setconf, '-Dlibdir=/opt', False)
+
+    def test_static_library_overwrite(self):
+        '''
+        Tests that static libraries are never appended to, always overwritten.
+        Has to be a unit test because this involves building a project,
+        reconfiguring, and building it again so that `ar` is run twice on the
+        same static library.
+        https://github.com/mesonbuild/meson/issues/1355
+        '''
+        testdir = os.path.join(self.common_test_dir, '3 static')
+        env = Environment(testdir, self.builddir, self.meson_command,
+                          get_fake_options(self.prefix), [])
+        cc = env.detect_c_compiler(False)
+        static_linker = env.detect_static_linker(cc)
+        if not isinstance(static_linker, mesonbuild.compilers.ArLinker):
+                raise unittest.SkipTest('static linker is not `ar`')
+        # Configure
+        self.init(testdir)
+        # Get name of static library
+        targets = self.introspect('--targets')
+        self.assertEqual(len(targets), 1)
+        libname = targets[0]['filename']
+        # Build and get contents of static library
+        self.build()
+        before = self._run(['ar', 't', os.path.join(self.builddir, libname)]).split()
+        # Filter out non-object-file contents
+        before = [f for f in before if f.endswith(('.o', '.obj'))]
+        # Static library should contain only one object
+        self.assertEqual(len(before), 1, msg=before)
+        # Change the source to be built into the static library
+        self.setconf('-Dsource=libfile2.c')
+        self.build()
+        after = self._run(['ar', 't', os.path.join(self.builddir, libname)]).split()
+        # Filter out non-object-file contents
+        after = [f for f in after if f.endswith(('.o', '.obj'))]
+        # Static library should contain only one object
+        self.assertEqual(len(after), 1, msg=after)
+        # and the object must have changed
+        self.assertNotEqual(before, after)
+
+    def test_static_compile_order(self):
+        '''
+        Test that the order of files in a compiler command-line while compiling
+        and linking statically is deterministic. This can't be an ordinary test
+        case because we need to inspect the compiler database.
+        https://github.com/mesonbuild/meson/pull/951
+        '''
+        testdir = os.path.join(self.common_test_dir, '5 linkstatic')
+        self.init(testdir)
+        compdb = self.get_compdb()
+        # Rules will get written out in this order
+        self.assertTrue(compdb[0]['file'].endswith("libfile.c"))
+        self.assertTrue(compdb[1]['file'].endswith("libfile2.c"))
+        self.assertTrue(compdb[2]['file'].endswith("libfile3.c"))
+        self.assertTrue(compdb[3]['file'].endswith("libfile4.c"))
+        # FIXME: We don't have access to the linker command
+
+    def test_run_target_files_path(self):
+        '''
+        Test that run_targets are run from the correct directory
+        https://github.com/mesonbuild/meson/issues/957
+        '''
+        testdir = os.path.join(self.common_test_dir, '58 run target')
+        self.init(testdir)
+        self.run_target('check_exists')
+
+    def test_install_introspection(self):
+        '''
+        Tests that the Meson introspection API exposes install filenames correctly
+        https://github.com/mesonbuild/meson/issues/829
+        '''
+        testdir = os.path.join(self.common_test_dir, '8 install')
+        self.init(testdir)
+        intro = self.introspect('--targets')
+        if intro[0]['type'] == 'executable':
+            intro = intro[::-1]
+        self.assertPathEqual(intro[0]['install_filename'], '/usr/lib/libstat.a')
+        self.assertPathEqual(intro[1]['install_filename'], '/usr/bin/prog' + exe_suffix)
+
+    def test_uninstall(self):
+        exename = os.path.join(self.installdir, 'usr/bin/prog' + exe_suffix)
+        testdir = os.path.join(self.common_test_dir, '8 install')
+        self.init(testdir)
+        self.assertFalse(os.path.exists(exename))
+        self.install()
+        self.assertTrue(os.path.exists(exename))
+        self.uninstall()
+        self.assertFalse(os.path.exists(exename))
+
+    def test_testsetups(self):
+        if not shutil.which('valgrind'):
+                raise unittest.SkipTest('Valgrind not installed.')
+        testdir = os.path.join(self.unit_test_dir, '2 testsetups')
+        self.init(testdir)
+        self.build()
+        self.run_tests()
+        with open(os.path.join(self.logdir, 'testlog.txt')) as f:
+            basic_log = f.read()
+        self.assertRaises(subprocess.CalledProcessError,
+                          self._run, self.mtest_command + ['--setup=valgrind'])
+        with open(os.path.join(self.logdir, 'testlog-valgrind.txt')) as f:
+            vg_log = f.read()
+        self.assertFalse('TEST_ENV is set' in basic_log)
+        self.assertFalse('Memcheck' in basic_log)
+        self.assertTrue('TEST_ENV is set' in vg_log)
+        self.assertTrue('Memcheck' in vg_log)
+
+    def assertFailedTestCount(self, failure_count, command):
+        try:
+            self._run(command)
+            self.assertEqual(0, failure_count, 'Expected %d tests to fail.' % failure_count)
+        except subprocess.CalledProcessError as e:
+            self.assertEqual(e.returncode, failure_count)
+
+    def test_suite_selection(self):
+        testdir = os.path.join(self.unit_test_dir, '4 suite selection')
+        self.init(testdir)
+        self.build()
+
+        self.assertFailedTestCount(3, self.mtest_command)
+
+        self.assertFailedTestCount(0, self.mtest_command + ['--suite', ':success'])
+        self.assertFailedTestCount(3, self.mtest_command + ['--suite', ':fail'])
+        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', ':success'])
+        self.assertFailedTestCount(0, self.mtest_command + ['--no-suite', ':fail'])
+
+        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'mainprj'])
+        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjsucc'])
+        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjfail'])
+        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjmix'])
+        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'mainprj'])
+        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjsucc'])
+        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjfail'])
+        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjmix'])
+
+        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'mainprj:fail'])
+        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'mainprj:success'])
+        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'mainprj:fail'])
+        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'mainprj:success'])
+
+        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjfail:fail'])
+        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjfail:success'])
+        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjfail:fail'])
+        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjfail:success'])
+
+        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjsucc:fail'])
+        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjsucc:success'])
+        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjsucc:fail'])
+        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjsucc:success'])
+
+        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjmix:fail'])
+        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjmix:success'])
+        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjmix:fail'])
+        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjmix:success'])
+
+        self.assertFailedTestCount(2, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix:fail'])
+        self.assertFailedTestCount(3, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix', '--suite', 'mainprj'])
+        self.assertFailedTestCount(2, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix', '--suite', 'mainprj', '--no-suite', 'subprjmix:fail'])
+        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix', '--suite', 'mainprj', '--no-suite', 'subprjmix:fail', 'mainprj-failing_test'])
+
+        self.assertFailedTestCount(1, self.mtest_command + ['--no-suite', 'subprjfail:fail', '--no-suite', 'subprjmix:fail'])
+
+    def test_build_by_default(self):
+        testdir = os.path.join(self.common_test_dir, '137 build by default')
+        self.init(testdir)
+        self.build()
+        genfile = os.path.join(self.builddir, 'generated.dat')
+        exe = os.path.join(self.builddir, 'fooprog' + exe_suffix)
+        self.assertTrue(os.path.exists(genfile))
+        self.assertFalse(os.path.exists(exe))
+        self._run(self.ninja_command + ['fooprog' + exe_suffix])
+        self.assertTrue(os.path.exists(exe))
+
+    def test_internal_include_order(self):
+        testdir = os.path.join(self.common_test_dir, '138 include order')
+        self.init(testdir)
+        for cmd in self.get_compdb():
+            if cmd['file'].endswith('/main.c'):
+                cmd = cmd['command']
+                break
+        else:
+            raise Exception('Could not find main.c command')
+        if cmd.endswith('.rsp'):
+            # Pretend to build so that the rsp files are generated
+            self.build(['-d', 'keeprsp', '-n'])
+            # Extract the actual command from the rsp file
+            rsp = os.path.join(self.builddir, cmd.split('cl @')[1])
+            with open(rsp, 'r', encoding='utf-8') as f:
+                cmd = f.read()
+        incs = [a for a in shlex.split(cmd) if a.startswith("-I")]
+        self.assertEqual(len(incs), 8)
+        # target private dir
+        self.assertPathEqual(incs[0], "-Isub4/someexe@exe")
+        # target build subdir
+        self.assertPathEqual(incs[1], "-Isub4")
+        # target source subdir
+        self.assertPathBasenameEqual(incs[2], 'sub4')
+        # include paths added via per-target c_args: ['-I'...]
+        self.assertPathBasenameEqual(incs[3], 'sub3')
+        # target include_directories: build dir
+        self.assertPathEqual(incs[4], "-Isub2")
+        # target include_directories: source dir
+        self.assertPathBasenameEqual(incs[5], 'sub2')
+        # target internal dependency include_directories: build dir
+        self.assertPathEqual(incs[6], "-Isub1")
+        # target internal dependency include_directories: source dir
+        self.assertPathBasenameEqual(incs[7], 'sub1')
+
+
+class WindowsTests(BasePlatformTests):
+    '''
+    Tests that should run on Cygwin, MinGW, and MSVC
+    '''
+    def setUp(self):
+        super().setUp()
+        self.platform_test_dir = os.path.join(self.src_root, 'test cases/windows')
+
+    def test_find_program(self):
+        '''
+        Test that Windows-specific edge-cases in find_program are functioning
+        correctly. Cannot be an ordinary test because it involves manipulating
+        PATH to point to a directory with Python scripts.
+        '''
+        testdir = os.path.join(self.platform_test_dir, '9 find program')
+        # Find `cmd` and `cmd.exe`
+        prog1 = ExternalProgram('cmd')
+        self.assertTrue(prog1.found(), msg='cmd not found')
+        prog2 = ExternalProgram('cmd.exe')
+        self.assertTrue(prog2.found(), msg='cmd.exe not found')
+        self.assertPathEqual(prog1.get_path(), prog2.get_path())
+        # Find cmd with an absolute path that's missing the extension
+        cmd_path = prog2.get_path()[:-4]
+        prog = ExternalProgram(cmd_path)
+        self.assertTrue(prog.found(), msg='{!r} not found'.format(cmd_path))
+        # Finding a script with no extension inside a directory works
+        prog = ExternalProgram(os.path.join(testdir, 'test-script'))
+        self.assertTrue(prog.found(), msg='test-script not found')
+        # Finding a script with an extension inside a directory works
+        prog = ExternalProgram(os.path.join(testdir, 'test-script-ext.py'))
+        self.assertTrue(prog.found(), msg='test-script-ext.py not found')
+        # Finding a script in PATH w/o extension works and adds the interpreter
+        os.environ['PATH'] += os.pathsep + testdir
+        prog = ExternalProgram('test-script-ext')
+        self.assertTrue(prog.found(), msg='test-script-ext not found in PATH')
+        self.assertPathEqual(prog.get_command()[0], sys.executable)
+        self.assertPathBasenameEqual(prog.get_path(), 'test-script-ext.py')
+        # Finding a script in PATH with extension works and adds the interpreter
+        prog = ExternalProgram('test-script-ext.py')
+        self.assertTrue(prog.found(), msg='test-script-ext.py not found in PATH')
+        self.assertPathEqual(prog.get_command()[0], sys.executable)
+        self.assertPathBasenameEqual(prog.get_path(), 'test-script-ext.py')
+
+
+class LinuxlikeTests(BasePlatformTests):
+    '''
+    Tests that should run on Linux and *BSD
+    '''
     def test_basic_soname(self):
         '''
         Test that the soname is set correctly for shared libraries. This can't
@@ -298,10 +651,6 @@ class LinuxlikeTests(unittest.TestCase):
         self.init(testdir)
         compdb = self.get_compdb()
         self.assertIn('-fPIC', compdb[0]['command'])
-        # This is needed to increase the difference between build.ninja's
-        # timestamp and coredata.dat's timestamp due to a Ninja bug.
-        # https://github.com/ninja-build/ninja/issues/371
-        time.sleep(1)
         self.setconf('-Db_staticpic=false')
         # Regenerate build
         self.build()
@@ -358,45 +707,6 @@ class LinuxlikeTests(unittest.TestCase):
         self.assertIn("'-Werror'", vala_command)
         self.assertIn("'-Werror'", c_command)
 
-    def test_static_compile_order(self):
-        '''
-        Test that the order of files in a compiler command-line while compiling
-        and linking statically is deterministic. This can't be an ordinary test
-        case because we need to inspect the compiler database.
-        https://github.com/mesonbuild/meson/pull/951
-        '''
-        testdir = os.path.join(self.common_test_dir, '5 linkstatic')
-        self.init(testdir)
-        compdb = self.get_compdb()
-        # Rules will get written out in this order
-        self.assertTrue(compdb[0]['file'].endswith("libfile.c"))
-        self.assertTrue(compdb[1]['file'].endswith("libfile2.c"))
-        self.assertTrue(compdb[2]['file'].endswith("libfile3.c"))
-        self.assertTrue(compdb[3]['file'].endswith("libfile4.c"))
-        # FIXME: We don't have access to the linker command
-
-    def test_install_introspection(self):
-        '''
-        Tests that the Meson introspection API exposes install filenames correctly
-        https://github.com/mesonbuild/meson/issues/829
-        '''
-        testdir = os.path.join(self.common_test_dir, '8 install')
-        self.init(testdir)
-        intro = self.introspect('--targets')
-        if intro[0]['type'] == 'executable':
-            intro = intro[::-1]
-        self.assertEqual(intro[0]['install_filename'], '/usr/lib/libstat.a')
-        self.assertEqual(intro[1]['install_filename'], '/usr/bin/prog')
-
-    def test_run_target_files_path(self):
-        '''
-        Test that run_targets are run from the correct directory
-        https://github.com/mesonbuild/meson/issues/957
-        '''
-        testdir = os.path.join(self.common_test_dir, '58 run target')
-        self.init(testdir)
-        self.run_target('check_exists')
-
     def test_qt5dependency_qmake_detection(self):
         '''
         Test that qt5 detection with qmake works. This can't be an ordinary
@@ -500,16 +810,6 @@ class LinuxlikeTests(unittest.TestCase):
             Oargs = [arg for arg in cmd if arg.startswith('-O')]
             self.assertEqual(Oargs, [Oflag, '-O0'])
 
-    def test_uninstall(self):
-        exename = os.path.join(self.installdir, 'usr/bin/prog')
-        testdir = os.path.join(self.common_test_dir, '8 install')
-        self.init(testdir)
-        self.assertFalse(os.path.exists(exename))
-        self.install()
-        self.assertTrue(os.path.exists(exename))
-        self.uninstall()
-        self.assertFalse(os.path.exists(exename))
-
     def test_custom_target_exe_data_deterministic(self):
         testdir = os.path.join(self.common_test_dir, '117 custom target capture')
         self.init(testdir)
@@ -519,79 +819,6 @@ class LinuxlikeTests(unittest.TestCase):
         meson_exe_dat2 = glob(os.path.join(self.privatedir, 'meson_exe*.dat'))
         self.assertListEqual(meson_exe_dat1, meson_exe_dat2)
 
-    def test_testsetups(self):
-        if not shutil.which('valgrind'):
-                raise unittest.SkipTest('Valgrind not installed.')
-        testdir = os.path.join(self.unit_test_dir, '2 testsetups')
-        self.init(testdir)
-        self.build()
-        self.run_tests()
-        with open(os.path.join(self.logdir, 'testlog.txt')) as f:
-            basic_log = f.read()
-        self.assertRaises(subprocess.CalledProcessError,
-                          self._run, self.mtest_command + ['--setup=valgrind'])
-        with open(os.path.join(self.logdir, 'testlog-valgrind.txt')) as f:
-            vg_log = f.read()
-        self.assertFalse('TEST_ENV is set' in basic_log)
-        self.assertFalse('Memcheck' in basic_log)
-        self.assertTrue('TEST_ENV is set' in vg_log)
-        self.assertTrue('Memcheck' in vg_log)
-
-    def assertFailedTestCount(self, failure_count, command):
-        try:
-            self._run(command)
-            self.assertEqual(0, failure_count, 'Expected %d tests to fail.' % failure_count)
-        except subprocess.CalledProcessError as e:
-            self.assertEqual(e.returncode, failure_count)
-
-    def test_suite_selection(self):
-        testdir = os.path.join(self.unit_test_dir, '4 suite selection')
-        self.init(testdir)
-        self.build()
-
-        self.assertFailedTestCount(3, self.mtest_command)
-
-        self.assertFailedTestCount(0, self.mtest_command + ['--suite', ':success'])
-        self.assertFailedTestCount(3, self.mtest_command + ['--suite', ':fail'])
-        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', ':success'])
-        self.assertFailedTestCount(0, self.mtest_command + ['--no-suite', ':fail'])
-
-        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'mainprj'])
-        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjsucc'])
-        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjfail'])
-        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjmix'])
-        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'mainprj'])
-        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjsucc'])
-        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjfail'])
-        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjmix'])
-
-        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'mainprj:fail'])
-        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'mainprj:success'])
-        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'mainprj:fail'])
-        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'mainprj:success'])
-
-        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjfail:fail'])
-        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjfail:success'])
-        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjfail:fail'])
-        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjfail:success'])
-
-        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjsucc:fail'])
-        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjsucc:success'])
-        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjsucc:fail'])
-        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjsucc:success'])
-
-        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjmix:fail'])
-        self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjmix:success'])
-        self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjmix:fail'])
-        self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjmix:success'])
-
-        self.assertFailedTestCount(2, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix:fail'])
-        self.assertFailedTestCount(3, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix', '--suite', 'mainprj'])
-        self.assertFailedTestCount(2, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix', '--suite', 'mainprj', '--no-suite', 'subprjmix:fail'])
-        self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix', '--suite', 'mainprj', '--no-suite', 'subprjmix:fail', 'mainprj-failing_test'])
-
-        self.assertFailedTestCount(1, self.mtest_command + ['--no-suite', 'subprjfail:fail', '--no-suite', 'subprjmix:fail'])
-
     def _test_stds_impl(self, testdir, compiler, p):
         lang_std = p + '_std'
         # Check that all the listed -std=xxx options for this compiler work
@@ -644,31 +871,6 @@ class LinuxlikeTests(unittest.TestCase):
         cpp = env.detect_cpp_compiler(False)
         self._test_stds_impl(testdir, cpp, 'cpp')
 
-    def test_build_by_default(self):
-        testdir = os.path.join(self.common_test_dir, '137 build by default')
-        self.init(testdir)
-        self.build()
-        genfile = os.path.join(self.builddir, 'generated.dat')
-        exe = os.path.join(self.builddir, 'fooprog')
-        self.assertTrue(os.path.exists(genfile))
-        self.assertFalse(os.path.exists(exe))
-        self._run(self.ninja_command + ['fooprog'])
-        self.assertTrue(os.path.exists(exe))
-
-    def test_libdir_must_be_inside_prefix(self):
-        testdir = os.path.join(self.common_test_dir, '1 trivial')
-        # libdir being inside prefix is ok
-        args = ['--prefix', '/opt', '--libdir', '/opt/lib32']
-        self.init(testdir, args)
-        self.wipe()
-        # libdir not being inside prefix is not ok
-        args = ['--prefix', '/usr', '--libdir', '/opt/lib32']
-        self.assertRaises(subprocess.CalledProcessError, self.init, testdir, args)
-        self.wipe()
-        # libdir must be inside prefix even when set via mesonconf
-        self.init(testdir)
-        self.assertRaises(subprocess.CalledProcessError, self.setconf, '-Dlibdir=/opt')
-
     def test_installed_modes(self):
         '''
         Test that files installed by these tests have the correct permissions.
@@ -722,47 +924,15 @@ class LinuxlikeTests(unittest.TestCase):
             # The chown failed nonfatally if we're not root
             self.assertEqual(0, statf.st_uid)
 
-    def test_internal_include_order(self):
-        testdir = os.path.join(self.common_test_dir, '138 include order')
-        self.init(testdir)
-        for cmd in self.get_compdb():
-            if cmd['file'].endswith('/main.c'):
-                cmd = cmd['command']
-                break
-        else:
-            raise Exception('Could not find main.c command')
-        incs = [a for a in shlex.split(cmd) if a.startswith("-I")]
-        self.assertEqual(len(incs), 8)
-        # target private dir
-        self.assertEqual(incs[0], "-Isub4/someexe@exe")
-        # target build subdir
-        self.assertEqual(incs[1], "-Isub4")
-        # target source subdir
-        msg = "{!r} does not end with '/sub4'".format(incs[2])
-        self.assertTrue(incs[2].endswith("/sub4"), msg)
-        # include paths added via per-target c_args: ['-I'...]
-        msg = "{!r} does not end with '/sub3'".format(incs[3])
-        self.assertTrue(incs[3].endswith("/sub3"), msg)
-        # target include_directories: build dir
-        self.assertEqual(incs[4], "-Isub2")
-        # target include_directories: source dir
-        msg = "{!r} does not end with '/sub2'".format(incs[5])
-        self.assertTrue(incs[5].endswith("/sub2"), msg)
-        # target internal dependency include_directories: build dir
-        self.assertEqual(incs[6], "-Isub1")
-        # target internal dependency include_directories: source dir
-        msg = "{!r} does not end with '/sub1'".format(incs[7])
-        self.assertTrue(incs[7].endswith("/sub1"), msg)
-
 
 class RewriterTests(unittest.TestCase):
 
     def setUp(self):
         super().setUp()
         src_root = os.path.dirname(__file__)
-        self.testroot = tempfile.mkdtemp()
+        self.testroot = os.path.realpath(tempfile.mkdtemp())
         self.rewrite_command = [sys.executable, os.path.join(src_root, 'mesonrewriter.py')]
-        self.tmpdir = tempfile.mkdtemp()
+        self.tmpdir = os.path.realpath(tempfile.mkdtemp())
         self.workdir = os.path.join(self.tmpdir, 'foo')
         self.test_dir = os.path.join(src_root, 'test cases/rewrite')
 
@@ -785,34 +955,38 @@ class RewriterTests(unittest.TestCase):
 
     def test_basic(self):
         self.prime('1 basic')
-        subprocess.check_output(self.rewrite_command + ['remove',
-                                                        '--target=trivialprog',
-                                                        '--filename=notthere.c',
-                                                        '--sourcedir', self.workdir])
+        subprocess.check_call(self.rewrite_command + ['remove',
+                                                      '--target=trivialprog',
+                                                      '--filename=notthere.c',
+                                                      '--sourcedir', self.workdir],
+                              universal_newlines=True)
         self.check_effectively_same('meson.build', 'removed.txt')
-        subprocess.check_output(self.rewrite_command + ['add',
-                                                        '--target=trivialprog',
-                                                        '--filename=notthere.c',
-                                                        '--sourcedir', self.workdir])
+        subprocess.check_call(self.rewrite_command + ['add',
+                                                      '--target=trivialprog',
+                                                      '--filename=notthere.c',
+                                                      '--sourcedir', self.workdir],
+                              universal_newlines=True)
         self.check_effectively_same('meson.build', 'added.txt')
-        subprocess.check_output(self.rewrite_command + ['remove',
-                                                        '--target=trivialprog',
-                                                        '--filename=notthere.c',
-                                                        '--sourcedir', self.workdir])
+        subprocess.check_call(self.rewrite_command + ['remove',
+                                                      '--target=trivialprog',
+                                                      '--filename=notthere.c',
+                                                      '--sourcedir', self.workdir],
+                              universal_newlines=True)
         self.check_effectively_same('meson.build', 'removed.txt')
 
     def test_subdir(self):
         self.prime('2 subdirs')
         top = self.read_contents('meson.build')
         s2 = self.read_contents('sub2/meson.build')
-        subprocess.check_output(self.rewrite_command + ['remove',
-                                                        '--target=something',
-                                                        '--filename=second.c',
-                                                        '--sourcedir', self.workdir])
+        subprocess.check_call(self.rewrite_command + ['remove',
+                                                      '--target=something',
+                                                      '--filename=second.c',
+                                                      '--sourcedir', self.workdir],
+                              universal_newlines=True)
         self.check_effectively_same('sub1/meson.build', 'sub1/after.txt')
         self.assertEqual(top, self.read_contents('meson.build'))
         self.assertEqual(s2, self.read_contents('sub2/meson.build'))
 
 
 if __name__ == '__main__':
-    unittest.main()
+    unittest.main(buffer=True)
diff --git a/test cases/common/105 find program path/meson.build b/test cases/common/105 find program path/meson.build
index ba6030b7a..e1e6d2e4e 100644
--- a/test cases/common/105 find program path/meson.build	
+++ b/test cases/common/105 find program path/meson.build	
@@ -1,10 +1,25 @@
 project('find program', 'c')
 
-prog = find_program('program.py')
-
 python = find_program('python3', required : false)
 if not python.found()
   python = find_program('python')
 endif
 
-run_command(python, prog.path())
+# Source file via string
+prog = find_program('program.py')
+# Source file via files()
+progf = files('program.py')
+# Built file
+py = configure_file(input : 'program.py',
+                    output : 'builtprogram.py',
+                    configuration : configuration_data())
+
+foreach f : [prog, find_program(py), find_program(progf)]
+  ret = run_command(python, f.path())
+  assert(ret.returncode() == 0, 'can\'t manually run @0@'.format(prog.path()))
+  assert(ret.stdout().strip() == 'Found', 'wrong output from manually-run @0@'.format(prog.path()))
+
+  ret = run_command(f)
+  assert(ret.returncode() == 0, 'can\'t run @0@'.format(prog.path()))
+  assert(ret.stdout().strip() == 'Found', 'wrong output from @0@'.format(prog.path()))
+endforeach
diff --git a/test cases/common/119 pathjoin/meson.build b/test cases/common/119 pathjoin/meson.build
index 7f33791d7..751ca68ac 100644
--- a/test cases/common/119 pathjoin/meson.build	
+++ b/test cases/common/119 pathjoin/meson.build	
@@ -1,8 +1,17 @@
 project('pathjoin', 'c')
 
+# Test string-args form since that is the canonical way
 assert(join_paths('foo') == 'foo', 'Single argument join is broken')
 assert(join_paths('foo', 'bar') == 'foo/bar', 'Path joining is broken')
 assert(join_paths('foo', 'bar', 'baz') == 'foo/bar/baz', 'Path joining is broken')
 assert(join_paths('/foo', 'bar') == '/foo/bar', 'Path joining is broken')
 assert(join_paths('foo', '/bar') == '/bar', 'Absolute path joining is broken')
 assert(join_paths('/foo', '/bar') == '/bar', 'Absolute path joining is broken')
+
+# Test array form since people are using that too
+assert(join_paths(['foo']) == 'foo', 'Single argument join is broken')
+assert(join_paths(['foo', 'bar']) == 'foo/bar', 'Path joining is broken')
+assert(join_paths(['foo', 'bar', 'baz']) == 'foo/bar/baz', 'Path joining is broken')
+assert(join_paths(['/foo', 'bar']) == '/foo/bar', 'Path joining is broken')
+assert(join_paths(['foo', '/bar']) == '/bar', 'Absolute path joining is broken')
+assert(join_paths(['/foo', '/bar']) == '/bar', 'Absolute path joining is broken')
diff --git a/test cases/common/3 static/libfile2.c b/test cases/common/3 static/libfile2.c
new file mode 100644
index 000000000..86bbb2c35
--- /dev/null
+++ b/test cases/common/3 static/libfile2.c	
@@ -0,0 +1,3 @@
+int libfunc2() {
+    return 4;
+}
diff --git a/test cases/common/3 static/meson.build b/test cases/common/3 static/meson.build
index 3dee93b78..e53995649 100644
--- a/test cases/common/3 static/meson.build	
+++ b/test cases/common/3 static/meson.build	
@@ -1,3 +1,4 @@
 project('static library test', 'c')
-lib = static_library('mylib', 'libfile.c',
+
+lib = static_library('mylib', get_option('source'),
   link_args : '-THISMUSTNOBEUSED') # Static linker needs to ignore all link args.
diff --git a/test cases/common/3 static/meson_options.txt b/test cases/common/3 static/meson_options.txt
new file mode 100644
index 000000000..7261a1992
--- /dev/null
+++ b/test cases/common/3 static/meson_options.txt	
@@ -0,0 +1 @@
+option('source', type : 'combo', choices : ['libfile.c', 'libfile2.c'], value : 'libfile.c')
diff --git a/test cases/common/94 default options/meson.build b/test cases/common/94 default options/meson.build
index a9176e0a9..9f45df072 100644
--- a/test cases/common/94 default options/meson.build	
+++ b/test cases/common/94 default options/meson.build	
@@ -1,4 +1,5 @@
 project('default options', 'cpp', 'c', default_options : [
+  'prefix=/absoluteprefix',
   'buildtype=debugoptimized',
   'cpp_std=c++11',
   'cpp_eh=none',
diff --git a/test cases/windows/9 find program/meson.build b/test cases/windows/9 find program/meson.build
index ef3458685..565fb626d 100644
--- a/test cases/windows/9 find program/meson.build	
+++ b/test cases/windows/9 find program/meson.build	
@@ -1,4 +1,12 @@
 project('find program', 'c')
 
+# Test that we can find native windows executables
+find_program('cmd')
+find_program('cmd.exe')
+
+# Test that a script file with an extension can be found
+ext = find_program('test-script-ext.py')
+test('ext', ext)
+# Test that a script file without an extension can be found
 prog = find_program('test-script')
 test('script', prog)
diff --git a/test cases/windows/9 find program/test-script-ext.py b/test cases/windows/9 find program/test-script-ext.py
new file mode 100644
index 000000000..ae9adfb8e
--- /dev/null
+++ b/test cases/windows/9 find program/test-script-ext.py	
@@ -0,0 +1,3 @@
+#!/usr/bin/env python3
+
+print('ext/noext')