$NetBSD: patch-src_Makefile.in,v 1.3 2020/05/31 14:11:42 mef Exp $

/usr/pkg/bin/swig -c++ -python -Ipython -o pysim ...
...
pysimulavr_wrap.cpp:146:20: fatal error: Python.h: No such file or directory

--- src/Makefile.in.orig	2013-07-07 10:12:33.000000000 +0900
+++ src/Makefile.in	2013-07-07 10:31:40.000000000 +0900
@@ -395,7 +395,7 @@
 @USE_SWIG_TRUE@@USE_TCL_TRUE@TCL_LIB = @AVR_TCL_LIB@
 @USE_SWIG_TRUE@@USE_TCL_TRUE@TCL_INCLUDE = @AVR_TCL_INCLUDE@
 @PYTHON_USE_TRUE@@USE_SWIG_TRUE@PYTHON_MODUL_LIB = _pysimulavr@PYTHON_MODULE_EXTENSION@
-@PYTHON_USE_TRUE@@USE_SWIG_TRUE@PYTHON_XTRA_INC = -Ipython
+@PYTHON_USE_TRUE@@USE_SWIG_TRUE@PYTHON_XTRA_INC = -I@PREFIX@/include/@PY_VER_SUFFIX@ -Ipython
 @PYTHON_USE_TRUE@@USE_SWIG_TRUE@PYTHON_MODUL_INTERFACE = $(srcdir)/python/pysimulavr.i
 @PYTHON_USE_TRUE@@USE_SWIG_TRUE@nodist_lib_pysimulavr_la_SOURCES = pysimulavr_wrap.cpp
 @PYTHON_USE_TRUE@@USE_SWIG_TRUE@lib_pysimulavr_la_CPPFLAGS = $(PYTHON_CPPFLAGS) $(PYTHON_XTRA_INC)