From e96bf13c71ec0dc6d75245352ee414ca3e8253db Mon Sep 17 00:00:00 2001
From: Rohit Goswami <rog32@hi.is>
Date: Mon, 21 Mar 2022 03:15:39 +0000
Subject: MAINT: Add a future warning for --empty-gen

---
 numpy/f2py/f2py2e.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'numpy')

diff --git a/numpy/f2py/f2py2e.py b/numpy/f2py/f2py2e.py
index ed5d529cf..90aea7705 100755
--- a/numpy/f2py/f2py2e.py
+++ b/numpy/f2py/f2py2e.py
@@ -325,6 +325,16 @@ def scaninputline(inputline):
     options['buildpath'] = buildpath
     options['include_paths'] = include_paths
     options.setdefault('f2cmap_file', None)
+    if not emptygen:
+        import warnings
+        warnings.warn("\n --empty-gen is false"
+                      " this will default to true"
+                      " in subsequent releases"
+                      " for build uniformity\n"
+                      " see: "
+                      "https://numpy.org/devdocs/f2py/buildtools/index.html"
+                      "\n Pass --empty-gen to silence this warning\n",
+                      FutureWarning, stacklevel=2)
     return files, options
 
 
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