From c5b2a96bc9bf8332dc9026de7713e448df75e987 Mon Sep 17 00:00:00 2001
From: Alessandro Decina <alessandro.decina@collabora.co.uk>
Date: Thu, 26 Aug 2010 12:09:31 +0200
Subject: [PATCH 1/3] plugin: refactor the initialization code.

Remove references to global python objects from the initialization code. This
makes it possible to avoid linking to libpython.
---
 plugin/gstpythonplugin.c | 58 ++++++++++++++++++++++++----------------
 1 file changed, 35 insertions(+), 23 deletions(-)

diff --git a/plugin/gstpythonplugin.c b/plugin/gstpythonplugin.c
index f8b0d0d78f..0134f19457 100644
--- a/plugin/gstpythonplugin.c
+++ b/plugin/gstpythonplugin.c
@@ -25,6 +25,7 @@
 /* include this first, before NO_IMPORT_PYGOBJECT is defined */
 #include <pygobject.h>
 #include <gst/gst.h>
+#include <Python.h>
 
 PyTypeObject *_PyGstElement_Type;
 #define PyGstElement_Type (*_PyGstElement_Type)
@@ -40,35 +41,46 @@ static PyObject *element;
 static inline gboolean
 np_init_pygobject (void)
 {
-  PyObject *gobject = PyImport_ImportModule ("gobject");
-  gboolean res = TRUE;
+  gboolean res = FALSE;
+  PyObject *gobject = NULL;
+  PyObject *main_module = NULL;
+  PyObject *mdict = NULL;
 
-  if (gobject != NULL) {
-    PyObject *mdict = PyModule_GetDict (gobject);
-    PyObject *cobject = PyDict_GetItemString (mdict, "_PyGObject_API");
-    if (PyCObject_Check (cobject)) {
-      _PyGObject_API =
-          (struct _PyGObject_Functions *) PyCObject_AsVoidPtr (cobject);
-    } else {
-      PyErr_SetString (PyExc_RuntimeError,
-          "could not find _PyGObject_API object");
-      PyErr_Print ();
-      res = FALSE;
-      goto beach;
-    }
-    if (!(PyObject_CallMethod (gobject, "threads_init", NULL, NULL))) {
-      PyErr_SetString (PyExc_RuntimeError, "Could not initialize threads");
-      PyErr_Print ();
-      res = FALSE;
-      goto beach;
-    }
-  } else {
+  gobject = PyImport_ImportModule ("gobject");
+  if (gobject == NULL) {
     PyErr_Print ();
     GST_WARNING ("could not import gobject");
-    res = FALSE;
+    goto beach;
   }
 
+  main_module = PyImport_AddModule ("__main__");
+  mdict = PyModule_GetDict (gobject);
+
+  PyObject *cobject = PyDict_GetItemString (mdict, "_PyGObject_API");
+  if (cobject == NULL) {
+    GST_WARNING ("could not find _PyGObject_API");
+    goto beach;
+  }
+
+  _PyGObject_API =
+      (struct _PyGObject_Functions *) PyCObject_AsVoidPtr (cobject);
+  if (_PyGObject_API == NULL) {
+    PyErr_Print ();
+    GST_WARNING ("_PyGObject_API is not a valid CObject");
+    goto beach;
+  }
+
+  if (!(PyObject_CallMethod (gobject, "threads_init", NULL, NULL))) {
+    PyErr_Print ();
+    GST_WARNING ("could not initialize threads");
+    goto beach;
+  }
+
+  res = TRUE;
+
 beach:
+  Py_XDECREF (gobject);
+
   return res;
 }
 

From 9ee33ad3014b751ead5a1b0aa44b9c74458dac6d Mon Sep 17 00:00:00 2001
From: Alessandro Decina <alessandro.decina@collabora.co.uk>
Date: Thu, 26 Aug 2010 12:13:34 +0200
Subject: [PATCH 2/3] acinclude.m4: use a better way to find the correct
 PYTHON_LIB_LOC.

---
 acinclude.m4 | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/acinclude.m4 b/acinclude.m4
index 4b9972c6ff..25f27e66b3 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -73,8 +73,15 @@ AC_DEFUN([AM_CHECK_PYTHON_LIBS],
 AC_MSG_CHECKING(for libraries required to embed python)
 dnl deduce PYTHON_LIBS
 py_exec_prefix=`$PYTHON -c "import sys; print sys.exec_prefix"`
-PYTHON_LIBS="-L${py_prefix}/lib -lpython${PYTHON_VERSION}"
-PYTHON_LIB_LOC="${py_prefix}/lib" 
+if $PYTHON-config --help 2>/dev/null; then
+  PYTHON_LIBS=`$PYTHON-config --ldflags 2>/dev/null`
+  PYTHON_LIB=`$PYTHON -c "import distutils.sysconfig as s; print s.get_python_lib(standard_lib=1)"`
+  PYTHON_LIB_LOC=$PYTHON_LIB/config
+else
+  asd
+  PYTHON_LIBS="-L${py_prefix}/lib -lpython${PYTHON_VERSION}"
+  PYTHON_LIB_LOC="${py_prefix}/lib"
+fi
 AC_SUBST(PYTHON_LIBS)
 AC_SUBST(PYTHON_LIB_LOC)
 dnl check if the headers exist:

From 53e5a77f527f40e4a16e1a00d574fb9f4f1c3c9e Mon Sep 17 00:00:00 2001
From: Alessandro Decina <alessandro.decina@collabora.co.uk>
Date: Thu, 26 Aug 2010 12:14:33 +0200
Subject: [PATCH 3/3] plugin: don't link to libpython

---
 plugin/Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugin/Makefile.am b/plugin/Makefile.am
index a8b63428fc..fc961a0541 100644
--- a/plugin/Makefile.am
+++ b/plugin/Makefile.am
@@ -7,4 +7,4 @@ INCLUDES = $(PYGOBJECT_CFLAGS) $(GST_CFLAGS)\
 
 libgstpython_la_SOURCES = gstpythonplugin.c
 libgstpython_la_LDFLAGS = -module -avoid-version
-libgstpython_la_LIBADD = $(GST_LIBS) $(PYTHON_LIBS)
+libgstpython_la_LIBADD = $(GST_LIBS)