1 files changed, 21 insertions, 0 deletions
diff --git a/numpy/_build_utils/gcc_build_bitness.py b/numpy/_build_utils/gcc_build_bitness.py
new file mode 100644
index 000000000..fcad237e9
--- /dev/null
+++ b/numpy/_build_utils/gcc_build_bitness.py
@@ -0,0 +1,21 @@
+#!python
+""" Detect bitness (32 or 64) of Mingw-w64 gcc build target on Windows.
+"""
+
+import re
+from subprocess import run, PIPE
+
+
+def main():
+    res = run(['gcc', '-v'], check=True, text=True, capture_output=True)
+    target = re.search(r'^Target: (.*)$', res.stderr, flags=re.M).groups()[0]
+    if target.startswith('i686'):
+        print('32')
+    elif target.startswith('x86_64'):
+        print('64')
+    else:
+        raise RuntimeError('Could not detect Mingw-w64 bitness')
+
+
+if __name__ == "__main__":
+    main()