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-rw-r--r--mesonbuild/interpreter.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/mesonbuild/interpreter.py b/mesonbuild/interpreter.py
index 2fd835f..51c40c9 100644
--- a/mesonbuild/interpreter.py
+++ b/mesonbuild/interpreter.py
@@ -1993,7 +1993,9 @@ class Interpreter():
raise InterpreterException('Argument "configuration" is not of type configuration_data')
ofile_abs = os.path.join(self.environment.build_dir, self.subdir, output)
if inputfile is not None:
- conffile = os.path.join(self.subdir, inputfile)
+ # Normalize the path of the conffile to avoid duplicates
+ # This is especially important to convert '/' to '\' on Windows
+ conffile = os.path.normpath(os.path.join(self.subdir, inputfile))
if conffile not in self.build_def_files:
self.build_def_files.append(conffile)
os.makedirs(os.path.join(self.environment.build_dir, self.subdir), exist_ok=True)