3 files changed, 5 insertions, 5 deletions
diff --git a/mesonbuild/mesonlib/posix.py b/mesonbuild/mesonlib/posix.py
index 1d8ba8c..67f9a44 100644
--- a/mesonbuild/mesonlib/posix.py
+++ b/mesonbuild/mesonlib/posix.py
@@ -27,7 +27,7 @@ __all__ = ['BuildDirLock']
 class BuildDirLock(BuildDirLockBase):
 
     def __enter__(self) -> None:
-        self.lockfile = open(self.lockfilename, 'w')
+        self.lockfile = open(self.lockfilename, 'w', encoding='utf-8')
         try:
             fcntl.flock(self.lockfile, fcntl.LOCK_EX | fcntl.LOCK_NB)
         except (BlockingIOError, PermissionError):
diff --git a/mesonbuild/mesonlib/universal.py b/mesonbuild/mesonlib/universal.py
index 0ed99a5..c500e15 100644
--- a/mesonbuild/mesonlib/universal.py
+++ b/mesonbuild/mesonlib/universal.py
@@ -1359,7 +1359,7 @@ def expand_arguments(args: T.Iterable[str]) -> T.Optional[T.List[str]]:
 
         args_file = arg[1:]
         try:
-            with open(args_file) as f:
+            with open(args_file, encoding='utf-8') as f:
                 extended_args = f.read().split()
             expended_args += extended_args
         except Exception as e:
@@ -1854,11 +1854,11 @@ def get_wine_shortpath(winecmd: T.List[str], wine_paths: T.Sequence[str]) -> str
     wine_paths = list(OrderedSet(wine_paths))
 
     getShortPathScript = '%s.bat' % str(uuid.uuid4()).lower()[:5]
-    with open(getShortPathScript, mode='w') as f:
+    with open(getShortPathScript, mode='w', encoding='utf-8') as f:
         f.write("@ECHO OFF\nfor %%x in (%*) do (\n echo|set /p=;%~sx\n)\n")
         f.flush()
     try:
-        with open(os.devnull, 'w') as stderr:
+        with open(os.devnull, 'w', encoding='utf-8') as stderr:
             wine_path = subprocess.check_output(
                 winecmd +
                 ['cmd', '/C', getShortPathScript] + wine_paths,
diff --git a/mesonbuild/mesonlib/win32.py b/mesonbuild/mesonlib/win32.py
index 0919ef7..bc0caec 100644
--- a/mesonbuild/mesonlib/win32.py
+++ b/mesonbuild/mesonlib/win32.py
@@ -27,7 +27,7 @@ __all__ = ['BuildDirLock']
 class BuildDirLock(BuildDirLockBase):
 
     def __enter__(self) -> None:
-        self.lockfile = open(self.lockfilename, 'w')
+        self.lockfile = open(self.lockfilename, 'w', encoding='utf-8')
         try:
             msvcrt.locking(self.lockfile.fileno(), msvcrt.LK_NBLCK, 1)
         except (BlockingIOError, PermissionError):