diff --git a/cross/ubuntu-mingw.txt b/cross/ubuntu-mingw.txt
index 66b279f22..7e848ac87 100644
--- a/cross/ubuntu-mingw.txt
+++ b/cross/ubuntu-mingw.txt
@@ -1,8 +1,8 @@
 name = 'windows'
 exe_wrapper = 'wine' # A command used to run generated executables.
-c = '/usr/bin/i586-mingw32msvc-gcc'
-cpp = '/usr/bin/i586-mingw32msvc-g++'
-ar = '/usr/i586-mingw32msvc/bin/ar'
-strip = '/usr/i586-mingw32msvc/bin/strip'
+c = '/usr/bin/i686-w64-mingw32-gcc'
+cpp = '/usr/bin/i686-w64-mingw32-gcc'
+ar = '/usr/bin/i686-w64-mingw32-ar'
+strip = '/usr/bin/i686-w64-mingw32-strip'
 
-root = '/usr/i586-mingw32msvc'
+root = '/usr/i686-w64-mingw32'
diff --git a/interpreter.py b/interpreter.py
index 4297633ed..8c165184a 100644
--- a/interpreter.py
+++ b/interpreter.py
@@ -503,12 +503,16 @@ class CompilerHolder(InterpreterObject):
                              'has_function' : self.has_function_method,
                              'has_member' : self.has_member_method,
                              'alignment' : self.alignment_method,
-                             'version' : self.version_method
+                             'version' : self.version_method,
+                             'cmd_array' : self.cmd_array_method,
                              })
 
     def version_method(self, args, kwargs):
         return self.compiler.version
 
+    def cmd_array_method(self, args, kwargs):
+        return self.compiler.exelist
+
     def alignment_method(self, args, kwargs):
         if len(args) != 1:
             raise InterpreterException('Alignment method takes exactly one positional argument.')
@@ -1682,7 +1686,7 @@ class Interpreter():
             index = args[0]
             if not isinstance(index, int):
                 raise InvalidArguments('Array index must be a number.')
-            if index < 0 or index >= len(obj):
+            if index < -len(obj) or index >= len(obj):
                 raise InvalidArguments('Array index %s is out of bounds for array of size %d.' % (index, len(obj)))
             return obj[index]
         raise InterpreterException('Arrays do not have a method called "%s".' % method_name)
diff --git a/meson_test.py b/meson_test.py
index d4a5b6251..2807ddeac 100755
--- a/meson_test.py
+++ b/meson_test.py
@@ -41,7 +41,10 @@ class TestRun():
 def write_log(logfile, test_name, result_str, result):
     logfile.write(result_str + '\n\n')
     logfile.write('--- command ---\n')
-    logfile.write(' '.join(result.cmd))
+    if result.cmd is None:
+        logfile.write('NONE')
+    else:
+        logfile.write(' '.join(result.cmd))
     logfile.write('\n--- "%s" stdout ---\n' % test_name)
     logfile.write(result.stdo)
     logfile.write('\n--- "%s" stderr ---\n' % test_name)
diff --git a/mparser.py b/mparser.py
index b7fb5195b..e8f20a5dc 100644
--- a/mparser.py
+++ b/mparser.py
@@ -41,7 +41,7 @@ class Lexer:
             # Need to be sorted longest to shortest.
             ('ignore', re.compile(r'[ \t]')),
             ('id', re.compile('[_a-zA-Z][_0-9a-zA-Z]*')),
-            ('number', re.compile(r'\d+')),
+            ('number', re.compile(r'-?\d+')),
             ('eol_cont', re.compile(r'\\\n')),
             ('eol', re.compile(r'\n')),
             ('multiline_string', re.compile(r"'''(.|\n)*?'''", re.M)),
diff --git a/run_cross_test.py b/run_cross_test.py
index 60263369c..7355c2830 100755
--- a/run_cross_test.py
+++ b/run_cross_test.py
@@ -45,7 +45,7 @@ def run_test(testdir, should_succeed=True):
     os.mkdir(test_build_dir)
     os.mkdir(install_dir)
     print('Running test: ' + testdir)
-    gen_command = [sys.executable, meson_command, '--prefix', install_dir, '--libdir', 'lib', testdir, test_build_dir] + extra_flags
+    gen_command = [sys.executable, meson_command, '--prefix', '/usr', '--libdir', 'lib', testdir, test_build_dir] + extra_flags
     p = subprocess.Popen(gen_command)
     p.wait()
     if not should_succeed:
@@ -62,7 +62,9 @@ def run_test(testdir, should_succeed=True):
     pt.wait()
     if pt.returncode != 0:
         raise RuntimeError('Running unit tests failed.')
-    pi = subprocess.Popen(install_commands, cwd=test_build_dir)
+    install_env = os.environ.copy()
+    install_env['DESTDIR'] = install_dir
+    pi = subprocess.Popen(install_commands, cwd=test_build_dir, env=install_env)
     pi.wait()
     if pi.returncode != 0:
         raise RuntimeError('Running install failed.')
diff --git a/test cases/common/59 object generator/meson.build b/test cases/common/59 object generator/meson.build
index 04d7d8b08..d2c8afb6c 100644
--- a/test cases/common/59 object generator/meson.build	
+++ b/test cases/common/59 object generator/meson.build	
@@ -12,10 +12,11 @@ else
   outputname = '@BASENAME@.o'
 endif
 
-# Generate a header file that needs to be included.
+cc = meson.get_compiler('c').cmd_array().get(0-1)
+# Generate an object file manually.
 gen = generator(python,
  output : outputname,
- arguments : [comp, '@INPUT@', '@OUTPUT@'])
+ arguments : [comp, cc, '@INPUT@', '@OUTPUT@'])
 
 generated = gen.process('source.c')
 
diff --git a/test cases/common/59 object generator/obj_generator.py b/test cases/common/59 object generator/obj_generator.py
index f64484342..6f98f3986 100755
--- a/test cases/common/59 object generator/obj_generator.py	
+++ b/test cases/common/59 object generator/obj_generator.py	
@@ -5,14 +5,15 @@
 import sys, shutil, subprocess
 
 if __name__ == '__main__':
-    if len(sys.argv) != 3:
-        print(sys.argv[0], 'input_file output_file')
+    if len(sys.argv) != 4:
+        print(sys.argv[0], 'compiler input_file output_file')
         sys.exit(1)
-    ifile = sys.argv[1]
-    ofile = sys.argv[2]
-    if shutil.which('cl'):
-        cmd = ['cl', '/nologo', '/Fo'+ofile, '/c', ifile]
+    compiler = sys.argv[1]
+    ifile = sys.argv[2]
+    ofile = sys.argv[3]
+    if compiler.endswith('cl'):
+        cmd = [compiler, '/nologo', '/Fo'+ofile, '/c', ifile]
     else:
-        cmd = ['cc', '-c', ifile, '-o', ofile]
+        cmd = [compiler, '-c', ifile, '-o', ofile]
     sys.exit(subprocess.call(cmd))