diff --git a/config/python.m4 b/config/python.m4
index baa7136f3674e5963f01f2208d194993d4cbea85..663ccf9d30983a5417a7cbf0b423d4749a0dd550 100644
--- a/config/python.m4
+++ b/config/python.m4
@@ -33,14 +33,23 @@ AC_MSG_CHECKING([Python configuration directory])
 python_majorversion=`${PYTHON} -c "import sys; print(sys.version[[0]])"`
 python_version=`${PYTHON} -c "import sys; print(sys.version[[:3]])"`
 python_configdir=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBPL'))))"`
-python_includespec=`${PYTHON} -c "import distutils.sysconfig; print('-I'+distutils.sysconfig.get_python_inc())"`
+AC_MSG_RESULT([$python_configdir])
+
+AC_MSG_CHECKING([Python include directories])
+python_includespec=`${PYTHON} -c "
+import distutils.sysconfig
+a = '-I' + distutils.sysconfig.get_python_inc(False)
+b = '-I' + distutils.sysconfig.get_python_inc(True)
+if a == b:
+    print(a)
+else:
+    print(a + ' ' + b)"`
+AC_MSG_RESULT([$python_includespec])
 
 AC_SUBST(python_majorversion)[]dnl
 AC_SUBST(python_version)[]dnl
 AC_SUBST(python_configdir)[]dnl
 AC_SUBST(python_includespec)[]dnl
-# This should be enough of a message.
-AC_MSG_RESULT([$python_configdir])
 ])# _PGAC_CHECK_PYTHON_DIRS
 
 
diff --git a/configure b/configure
index 5fd76518129df987800df7bb17782beef3d9db7f..6a89cca1f63e0aac88e1ad8b034dc00fbfff218b 100755
--- a/configure
+++ b/configure
@@ -7454,12 +7454,23 @@ $as_echo_n "checking Python configuration directory... " >&6; }
 python_majorversion=`${PYTHON} -c "import sys; print(sys.version[0])"`
 python_version=`${PYTHON} -c "import sys; print(sys.version[:3])"`
 python_configdir=`${PYTHON} -c "import distutils.sysconfig; print(' '.join(filter(None,distutils.sysconfig.get_config_vars('LIBPL'))))"`
-python_includespec=`${PYTHON} -c "import distutils.sysconfig; print('-I'+distutils.sysconfig.get_python_inc())"`
-
-# This should be enough of a message.
 { $as_echo "$as_me:$LINENO: result: $python_configdir" >&5
 $as_echo "$python_configdir" >&6; }
 
+{ $as_echo "$as_me:$LINENO: checking Python include directories" >&5
+$as_echo_n "checking Python include directories... " >&6; }
+python_includespec=`${PYTHON} -c "
+import distutils.sysconfig
+a = '-I' + distutils.sysconfig.get_python_inc(False)
+b = '-I' + distutils.sysconfig.get_python_inc(True)
+if a == b:
+    print(a)
+else:
+    print(a + ' ' + b)"`
+{ $as_echo "$as_me:$LINENO: result: $python_includespec" >&5
+$as_echo "$python_includespec" >&6; }
+
+
 
 { $as_echo "$as_me:$LINENO: checking how to link an embedded Python application" >&5
 $as_echo_n "checking how to link an embedded Python application... " >&6; }