7
ho una semplice applicazione PyGObject:cx_freeze applicazione PyGObject su Linux
from gi.repository import Gtk
class Window(Gtk.Window):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.set_border_width(5)
self.button = Gtk.Button('Test')
self.box = Gtk.Box()
self.box.pack_start(self.button, True, True, 0)
self.add(self.box)
self.connect('delete-event', Gtk.main_quit)
self.show_all()
win = Window()
Gtk.main()
sto cercando di congelare utilizzando cx_freeze su Linux usando seguente setup.py script:
from cx_Freeze import setup, Executable
setup(name="GUI Test",
description="GUITest",
version="0.1",
options={"build_exe": {"build_exe": "Bin/pygobject",
"create_shared_zip": False,
}},
executables=[Executable(script="hello_pygobject.py",
targetName="hello",
appendScriptToExe=True,
)]
)
E io sono in esecuzione come this: python3 setup_pygobject.py build
Quando si tenta di eseguire l'applicazione bloccata, viene visualizzato il seguente messaggio di errore:
(process:22538): Gtk-CRITICAL **: gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
Segmentation fault (core dumped)
Probabilmente mi manca un sacco di librerie nella directory, come ad esempio they have explained for Windows. Ho provato pmap per trovare le librerie mancanti. Come ultima risorsa ho anche provato a copiare tutte le librerie in /usr/lib64/ (+ alcune altre che non ricordo) nella directory di lavoro.
C'è un buon modo su come trovare le librerie di cui ho bisogno o un modo migliore per risolverlo?
questione connessa, ma per Windows:Python3 + PyGobject + GTK3 and cx_freeze missing DLLs
EDIT:
ho cercato di usare dbg per investigare core dump. Ho ottenuto questo:
...
Core was generated by `./hello'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007fd3d009d4ef in _gtk_settings_get_style_cascade() from /lib64/libgtk-3.so.0
Quando ho installato debuginfos separati ho ottenuto questo:
...
Core was generated by `./hello'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 _gtk_settings_get_style_cascade (settings=0x0, [email protected]=1) at gtksettings.c:1764
1764 GtkSettingsPrivate *priv = settings->priv;
Quando si esegue l'applicazione attraverso gdb ho ottenuto questo:
...
(process:21699): Gtk-CRITICAL **: gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
Program received signal SIGSEGV, Segmentation fault.
_gtk_settings_get_style_cascade (settings=0x0, [email protected]=1) at gtksettings.c:1764
1764 GtkSettingsPrivate *priv = settings->priv;
traccia stack:
(gdb) backtrace
#0 0x00007fffed62c4ef in _gtk_settings_get_style_cascade (settings=0x0, [email protected]=1) at gtksettings.c:1764
#1 0x00007fffed6422d0 in gtk_style_context_init (style_context=0x904080 [GtkStyleContext]) at gtkstylecontext.c:425
#2 0x00007fffef86556b in g_type_create_instance (type=9442240) at gtype.c:1870
#3 0x00007fffef8480ab in g_object_new_internal ([email protected]=0x901490, [email protected]=0x0, [email protected]=0) at gobject.c:1774
#4 0x00007fffef849991 in g_object_newv ([email protected]=9442240, [email protected]=0, [email protected]=0x0) at gobject.c:1921
#5 0x00007fffef84a2c4 in g_object_new (object_type=9442240, [email protected]=0x0) at gobject.c:1614
#6 0x00007fffed63f709 in gtk_style_context_new() at gtkstylecontext.c:994
#7 0x00007fffed46086f in _gtk_style_new_for_path (screen=0x0, [email protected]=0x83dd70) at deprecated/gtkstyle.c:853
#8 0x00007fffed4608ee in gtk_style_new() at deprecated/gtkstyle.c:887
#9 0x00007fffed463569 in gtk_widget_get_default_style() at deprecated/gtkstyle.c:4057
#10 0x00007fffed6dfde5 in gtk_widget_init (widget=<optimized out>) at gtkwidget.c:4510
#11 0x00007fffef865527 in g_type_create_instance (type=9319840) at gtype.c:1864
#12 0x00007fffef8480ab in g_object_new_internal ([email protected]=0x900b90, [email protected]=0x0, [email protected]=0) at gobject.c:1774
#13 0x00007fffef849991 in g_object_newv (object_type=9319840, n_parameters=0, parameters=0x0) at gobject.c:1921
#14 0x00007fffefece19c in pygobject_constructv() at /home/skontar/Python/Examples/GUI/Bin/pygobject/gi._gi.so
#15 0x00007fffefed57c1 in pygobject_init() at /home/skontar/Python/Examples/GUI/Bin/pygobject/gi._gi.so
#16 0x00007ffff79fec4c in wrap_init() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#17 0x00007ffff79adf31 in PyObject_Call() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#18 0x00007ffff7a60a9f in PyEval_EvalFrameEx() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#19 0x00007ffff7a65de6 in PyEval_EvalCodeEx() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#20 0x00007ffff79d65f8 in function_call() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#21 0x00007ffff79adf31 in PyObject_Call() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#22 0x00007ffff79c3344 in method_call() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#23 0x00007ffff79adf31 in PyObject_Call() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#24 0x00007ffff7a057e0 in slot_tp_init() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#25 0x00007ffff7a03276 in type_call() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#26 0x00007ffff79adf31 in PyObject_Call() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#27 0x00007ffff7a5de0a in PyEval_EvalFrameEx() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#28 0x00007ffff7a65de6 in PyEval_EvalCodeEx() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#29 0x00007ffff7a65e8b in PyEval_EvalCode() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#30 0x00007ffff7a5936a in builtin_exec() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#31 0x00007ffff7a64f1f in PyEval_EvalFrameEx() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#32 0x00007ffff7a65de6 in PyEval_EvalCodeEx() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#33 0x00007ffff7a65e8b in PyEval_EvalCode() at /home/skontar/Python/Examples/GUI/Bin/pygobject/libpython3.4m.so.1.0
#34 0x000000000040192c in ()
#35 0x00007ffff738f700 in __libc_start_main (main=0x4011e0, argc=1, argv=0x7fffffffe598, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe588)
at libc-start.c:289
#36 0x0000000000401c69 in ()
EDIT 2:
pacchetti rilevanti:
python3.x86_64 3.4.2-6.fc22
python3-gobject.x86_64 3.16.2-1.fc22
cx-Freeze (4.3.4)
Si può provare a correre attraverso '' gdb'' per avere maggiori dettagli sulla natura del guasto di segmentazione (o ispezionare il core dump con gdb). – proycon
@proycon Ho provato (mai fatto prima). Ma non trovo l'uscita utile. – Fenikso
È vero, sebbene almeno tu ora sappia che il segfault è causato da un puntatore nullo nella libreria gtk3 ('' settings == NULL'' quindi '' settings-> priv'' segfaults). Io purtroppo non ho familiarità con cx_Freeze me stesso. Questo potrebbe essere difficile da decifrare. – proycon