DOC: Add help string for F2PY

From https://github.com/HaoZeke/f2py_skel/commit/39a0849b16206e0201e89e12233e5a871a3a71a1

2 files changed, 7 insertions, 0 deletions

diff --git a/doc/source/f2py/usage.rst b/doc/source/f2py/usage.rst
index 596148799..1bf406ff2 100644
--- a/doc/source/f2py/usage.rst
+++ b/doc/source/f2py/usage.rst
@@ -220,6 +220,10 @@ Other options
   Do [not] lower the cases in ``<fortran files>``.  By default,
   ``--lower`` is assumed with ``-h`` switch, and ``--no-lower``
   without the ``-h`` switch.
+``-include<header>``
+  Writes additional headers in the C wrapper, can be passed multiple times,
+  generates #include <header> each time. Note that this is meant to be passed in
+  single quotes and without spaces, for example ``'-include<stdbool.h>'``
 ``--build-dir <dirname>``
   All F2PY generated files are created in ``<dirname>``.  Default is
   ``tempfile.mkdtemp()``.
diff --git a/numpy/f2py/f2py2e.py b/numpy/f2py/f2py2e.py
index 4d79c304a..bb5b32878 100755
--- a/numpy/f2py/f2py2e.py
+++ b/numpy/f2py/f2py2e.py
@@ -82,6 +82,9 @@ Options:
                    file <modulename>module.c or extension module <modulename>.
                    Default is 'untitled'.
 
+  '-include<header>'  Writes additional headers in the C wrapper, can be passed
+                      multiple times, generates #include <header> each time.
+
   --[no-]lower     Do [not] lower the cases in <fortran files>. By default,
                    --lower is assumed with -h key, and --no-lower without -h key.