我无法在GTK+应用程序中使用#include <errno.h>标头。我已经尝试了GTK+2和3，仍然错误。
如果我不包括errno.h，它会说它不包括在内。然而，如果我这样做，ld将失败，因为没有包含GTK库中的函数。
gtk3的编译日志(无错误(
gcc `pkg-config --cflags --libs gtk+-3.0` -o winopa_launcher winopa_launcher.cwinopa_launcher.c: In function ‘on_set_btn_clicked’:
winopa_launcher.c:21:15: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
21 | entry_value = gtk_entry_get_text(entry);
| ^
winopa_launcher.c:24:37: warning: passing argument 1 of ‘gtk_message_dialog_new’ from incompatible pointer type [-Wincompatible-pointer-types]
24 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, ""%s" is not a valid integer", entry_value);
| ^~~~~~
| |
| GtkWidget * {aka struct _GtkWidget *}
In file included from /usr/include/gtk-3.0/gtk/gtk.h:150,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkmessagedialog.h:99:12: note: expected ‘GtkWindow *’ {aka ‘struct _GtkWindow *’} but argument is of type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’}
99 | GtkWidget* gtk_message_dialog_new (GtkWindow *parent,
| ^~~~~~~~~~~~~~~~~~~~~~
winopa_launcher.c:24:12: warning: assignment to ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’} from incompatible pointer type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} [-Wincompatible-pointer-types]
24 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, ""%s" is not a valid integer", entry_value);
| ^
winopa_launcher.c:26:24: warning: passing argument 1 of ‘gtk_widget_destroy’ from incompatible pointer type [-Wincompatible-pointer-types]
26 | gtk_widget_destroy(dialog);
| ^~~~~~
| |
| GtkMessageDialog * {aka struct _GtkMessageDialog *}
In file included from /usr/include/gtk-3.0/gtk/gtkapplication.h:27,
from /usr/include/gtk-3.0/gtk/gtkwindow.h:33,
from /usr/include/gtk-3.0/gtk/gtkdialog.h:32,
from /usr/include/gtk-3.0/gtk/gtkaboutdialog.h:30,
from /usr/include/gtk-3.0/gtk/gtk.h:31,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkwidget.h:619:50: note: expected ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} but argument is of type ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’}
619 | void gtk_widget_destroy (GtkWidget *widget);
| ~~~~~~~~~~~~~~~~~~^~~~~~
winopa_launcher.c:32:37: warning: passing argument 1 of ‘gtk_message_dialog_new’ from incompatible pointer type [-Wincompatible-pointer-types]
32 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Expected a percentage between 5 and 100");
| ^~~~~~
| |
| GtkWidget * {aka struct _GtkWidget *}
In file included from /usr/include/gtk-3.0/gtk/gtk.h:150,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkmessagedialog.h:99:12: note: expected ‘GtkWindow *’ {aka ‘struct _GtkWindow *’} but argument is of type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’}
99 | GtkWidget* gtk_message_dialog_new (GtkWindow *parent,
| ^~~~~~~~~~~~~~~~~~~~~~
winopa_launcher.c:32:12: warning: assignment to ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’} from incompatible pointer type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} [-Wincompatible-pointer-types]
32 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Expected a percentage between 5 and 100");
| ^
winopa_launcher.c:34:24: warning: passing argument 1 of ‘gtk_widget_destroy’ from incompatible pointer type [-Wincompatible-pointer-types]
34 | gtk_widget_destroy(dialog);
| ^~~~~~
| |
| GtkMessageDialog * {aka struct _GtkMessageDialog *}
In file included from /usr/include/gtk-3.0/gtk/gtkapplication.h:27,
from /usr/include/gtk-3.0/gtk/gtkwindow.h:33,
from /usr/include/gtk-3.0/gtk/gtkdialog.h:32,
from /usr/include/gtk-3.0/gtk/gtkaboutdialog.h:30,
from /usr/include/gtk-3.0/gtk/gtk.h:31,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkwidget.h:619:50: note: expected ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} but argument is of type ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’}
619 | void gtk_widget_destroy (GtkWidget *widget);
| ~~~~~~~~~~~~~~~~~~^~~~~~
winopa_launcher.c:41:156: error: ‘g_errno’ undeclared (first use in this function); did you mean ‘g_error’?
41 | GE_ERROR, GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", g_errno);
| ^~~~~~~
| g_error
winopa_launcher.c:41:156: note: each undeclared identifier is reported only once for each function it appears in
winopa_launcher.c:41:37: warning: passing argument 1 of ‘gtk_message_dialog_new’ from incompatible pointer type [-Wincompatible-pointer-types]
41 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", g_errno);
| ^~~~~~
| |
| GtkWidget * {aka struct _GtkWidget *}
In file included from /usr/include/gtk-3.0/gtk/gtk.h:150,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkmessagedialog.h:99:12: note: expected ‘GtkWindow *’ {aka ‘struct _GtkWindow *’} but argument is of type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’}
99 | GtkWidget* gtk_message_dialog_new (GtkWindow *parent,
| ^~~~~~~~~~~~~~~~~~~~~~
winopa_launcher.c:43:24: warning: passing argument 1 of ‘gtk_widget_destroy’ from incompatible pointer type [-Wincompatible-pointer-types]
43 | gtk_widget_destroy(dialog);
| ^~~~~~
| |
| GtkMessageDialog * {aka struct _GtkMessageDialog *}
In file included from /usr/include/gtk-3.0/gtk/gtkapplication.h:27,
from /usr/include/gtk-3.0/gtk/gtkwindow.h:33,
from /usr/include/gtk-3.0/gtk/gtkdialog.h:32,
from /usr/include/gtk-3.0/gtk/gtkaboutdialog.h:30,
from /usr/include/gtk-3.0/gtk/gtk.h:31,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkwidget.h:619:50: note: expected ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} but argument is of type ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’}
619 | void gtk_widget_destroy (GtkWidget *widget);
| ~~~~~~~~~~~~~~~~~~^~~~~~
winopa_launcher.c: In function ‘main’:
winopa_launcher.c:59:3: warning: ‘gtk_vbox_new’ is deprecated: Use 'gtk_box_new' instead [-Wdeprecated-declarations]
59 | vbox = gtk_vbox_new(TRUE, 5);
| ^~~~
In file included from /usr/include/gtk-3.0/gtk/gtk.h:286,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/deprecated/gtkvbox.h:61:13: note: declared here
61 | GtkWidget * gtk_vbox_new (gboolean homogeneous,
| ^~~~~~~~~~~~
winopa_launcher.c:64:3: warning: ‘gtk_hbox_new’ is deprecated: Use 'gtk_box_new' instead [-Wdeprecated-declarations]
64 | hbox = gtk_hbox_new(TRUE, 5);
| ^~~~
In file included from /usr/include/gtk-3.0/gtk/gtk.h:262,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/deprecated/gtkhbox.h:63:13: note: declared here
63 | GtkWidget * gtk_hbox_new (gboolean homogeneous,
| ^~~~~~~~~~~~
mattia@mattia-ThinkPad-E595:~/lab$ gtk3-gcc -o winopa_launcher winopa_launcher.c
winopa_launcher.c: In function ‘on_set_btn_clicked’:
winopa_launcher.c:25:12: warning: assignment to ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’} from incompatible pointer type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} [-Wincompatible-pointer-types]
25 | dialog = gtk_message_dialog_new(GTK_WINDOW(widget), GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, ""%s" is not a valid integer", entry_value);
| ^
winopa_launcher.c:33:37: warning: passing argument 1 of ‘gtk_message_dialog_new’ from incompatible pointer type [-Wincompatible-pointer-types]
33 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Expected a percentage between 5 and 100");
| ^~~~~~
| |
| GtkWidget * {aka struct _GtkWidget *}
In file included from /usr/include/gtk-3.0/gtk/gtk.h:150,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkmessagedialog.h:99:12: note: expected ‘GtkWindow *’ {aka ‘struct _GtkWindow *’} but argument is of type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’}
99 | GtkWidget* gtk_message_dialog_new (GtkWindow *parent,
| ^~~~~~~~~~~~~~~~~~~~~~
winopa_launcher.c:33:12: warning: assignment to ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’} from incompatible pointer type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} [-Wincompatible-pointer-types]
33 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Expected a percentage between 5 and 100");
| ^
winopa_launcher.c:39:12: warning: passing argument 1 of ‘snprintf’ from incompatible pointer type [-Wincompatible-pointer-types]
39 | snprintf(hexvalue, 10, "0x%x", 0xffffffff * value / 100);
| ^~~~~~~~
| |
| char **
In file included from /usr/include/pango-1.0/pango/pango-utils.h:25,
from /usr/include/pango-1.0/pango/pango.h:47,
from /usr/include/gtk-3.0/gdk/gdktypes.h:35,
from /usr/include/gtk-3.0/gdk/gdkapplaunchcontext.h:30,
from /usr/include/gtk-3.0/gdk/gdk.h:32,
from /usr/include/gtk-3.0/gtk/gtk.h:30,
from winopa_launcher.c:1:
/usr/include/stdio.h:354:39: note: expected ‘char * restrict’ but argument is of type ‘char **’
354 | extern int snprintf (char *__restrict __s, size_t __maxlen,
| ~~~~~~~~~~~~~~~~~^~~
winopa_launcher.c:42:156: error: ‘errno’ undeclared (first use in this function)
42 | GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", errno);
| ^~~~~
winopa_launcher.c:2:1: note: ‘errno’ is defined in header ‘<errno.h>’; did you forget to ‘#include <errno.h>’?
1 | #include <gtk/gtk.h>
+++ |+#include <errno.h>
2 |
winopa_launcher.c:42:156: note: each undeclared identifier is reported only once for each function it appears in
42 | GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", errno);
| ^~~~~
winopa_launcher.c:42:37: warning: passing argument 1 of ‘gtk_message_dialog_new’ from incompatible pointer type [-Wincompatible-pointer-types]
42 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", errno);
| ^~~~~~
| |
| GtkWidget * {aka struct _GtkWidget *}
In file included from /usr/include/gtk-3.0/gtk/gtk.h:150,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkmessagedialog.h:99:12: note: expected ‘GtkWindow *’ {aka ‘struct _GtkWindow *’} but argument is of type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’}
99 | GtkWidget* gtk_message_dialog_new (GtkWindow *parent,
| ^~~~~~~~~~~~~~~~~~~~~~
winopa_launcher.c: In function ‘main’:
winopa_launcher.c:60:3: warning: ‘gtk_vbox_new’ is deprecated: Use 'gtk_box_new' instead [-Wdeprecated-declarations]
60 | vbox = gtk_vbox_new(TRUE, 5);
| ^~~~
In file included from /usr/include/gtk-3.0/gtk/gtk.h:286,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/deprecated/gtkvbox.h:61:13: note: declared here
61 | GtkWidget * gtk_vbox_new (gboolean homogeneous,
| ^~~~~~~~~~~~
winopa_launcher.c:65:3: warning: ‘gtk_hbox_new’ is deprecated: Use 'gtk_box_new' instead [-Wdeprecated-declarations]
65 | hbox = gtk_hbox_new(TRUE, 5);
| ^~~~
In file included from /usr/include/gtk-3.0/gtk/gtk.h:262,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/deprecated/gtkhbox.h:63:13: note: declared here
63 | GtkWidget * gtk_hbox_new (gboolean homogeneous,
| ^~~~~~~~~~~~
mattia@mattia-ThinkPad-E595:~/lab$ gtk3-gcc -o winopa_launcher winopa_launcher.c
winopa_launcher.c: In function ‘on_set_btn_clicked’:
winopa_launcher.c:25:12: warning: assignment to ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’} from incompatible pointer type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} [-Wincompatible-pointer-types]
25 | dialog = gtk_message_dialog_new(GTK_WINDOW(widget), GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, ""%s" is not a valid integer", entry_value);
| ^
winopa_launcher.c:33:37: warning: passing argument 1 of ‘gtk_message_dialog_new’ from incompatible pointer type [-Wincompatible-pointer-types]
33 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Expected a percentage between 5 and 100");
| ^~~~~~
| |
| GtkWidget * {aka struct _GtkWidget *}
In file included from /usr/include/gtk-3.0/gtk/gtk.h:150,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkmessagedialog.h:99:12: note: expected ‘GtkWindow *’ {aka ‘struct _GtkWindow *’} but argument is of type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’}
99 | GtkWidget* gtk_message_dialog_new (GtkWindow *parent,
| ^~~~~~~~~~~~~~~~~~~~~~
winopa_launcher.c:33:12: warning: assignment to ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’} from incompatible pointer type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} [-Wincompatible-pointer-types]
33 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Expected a percentage between 5 and 100");
| ^
winopa_launcher.c:39:12: warning: passing argument 1 of ‘snprintf’ from incompatible pointer type [-Wincompatible-pointer-types]
39 | snprintf(hexvalue, 10, "0x%x", 0xffffffff * value / 100);
| ^~~~~~~~
| |
| char **
In file included from /usr/include/pango-1.0/pango/pango-utils.h:25,
from /usr/include/pango-1.0/pango/pango.h:47,
from /usr/include/gtk-3.0/gdk/gdktypes.h:35,
from /usr/include/gtk-3.0/gdk/gdkapplaunchcontext.h:30,
from /usr/include/gtk-3.0/gdk/gdk.h:32,
from /usr/include/gtk-3.0/gtk/gtk.h:30,
from winopa_launcher.c:1:
/usr/include/stdio.h:354:39: note: expected ‘char * restrict’ but argument is of type ‘char **’
354 | extern int snprintf (char *__restrict __s, size_t __maxlen,
| ~~~~~~~~~~~~~~~~~^~~
winopa_launcher.c:42:156: error: ‘errno’ undeclared (first use in this function)
42 | GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", errno);
| ^~~~~
winopa_launcher.c:2:1: note: ‘errno’ is defined in header ‘<errno.h>’; did you forget to ‘#include <errno.h>’?
1 | #include <gtk/gtk.h>
+++ |+#include <errno.h>
2 |
winopa_launcher.c:42:156: note: each undeclared identifier is reported only once for each function it appears in
42 | GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", errno);
| ^~~~~
winopa_launcher.c:42:37: warning: passing argument 1 of ‘gtk_message_dialog_new’ from incompatible pointer type [-Wincompatible-pointer-types]
42 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", errno);
| ^~~~~~
| |
| GtkWidget * {aka struct _GtkWidget *}
In file included from /usr/include/gtk-3.0/gtk/gtk.h:150,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkmessagedialog.h:99:12: note: expected ‘GtkWindow *’ {aka ‘struct _GtkWindow *’} but argument is of type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’}
99 | GtkWidget* gtk_message_dialog_new (GtkWindow *parent,
| ^~~~~~~~~~~~~~~~~~~~~~
winopa_launcher.c: In function ‘main’:
winopa_launcher.c:60:3: warning: ‘gtk_vbox_new’ is deprecated: Use 'gtk_box_new' instead [-Wdeprecated-declarations]
60 | vbox = gtk_vbox_new(TRUE, 5);
| ^~~~
In file included from /usr/include/gtk-3.0/gtk/gtk.h:286,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/deprecated/gtkvbox.h:61:13: note: declared here
61 | GtkWidget * gtk_vbox_new (gboolean homogeneous,
| ^~~~~~~~~~~~
winopa_launcher.c:65:3: warning: ‘gtk_hbox_new’ is deprecated: Use 'gtk_box_new' instead [-Wdeprecated-declarations]
65 | hbox = gtk_hbox_new(TRUE, 5);
| ^~~~
In file included from /usr/include/gtk-3.0/gtk/gtk.h:262,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/deprecated/gtkhbox.h:63:13: note: declared here
63 | GtkWidget * gtk_hbox_new (gboolean homogeneous,
| ^~~~~~~~~~~~
gtk3的编译日志(带错误号(:
$ gcc `pkg-config --cflags --libs gtk+-3.0` -o winopa_launcher winopa_launcher.c
winopa_launcher.c: In function ‘on_set_btn_clicked’:
winopa_launcher.c:26:12: warning: assignment to ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’} from incompatible pointer type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} [-Wincompatible-pointer-types]
26 | dialog = gtk_message_dialog_new(GTK_WINDOW(widget), GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, ""%s" is not a valid integer", entry_value);
| ^
winopa_launcher.c:34:37: warning: passing argument 1 of ‘gtk_message_dialog_new’ from incompatible pointer type [-Wincompatible-pointer-types]
34 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Expected a percentage between 5 and 100");
| ^~~~~~
| |
| GtkWidget * {aka struct _GtkWidget *}
In file included from /usr/include/gtk-3.0/gtk/gtk.h:150,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkmessagedialog.h:99:12: note: expected ‘GtkWindow *’ {aka ‘struct _GtkWindow *’} but argument is of type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’}
99 | GtkWidget* gtk_message_dialog_new (GtkWindow *parent,
| ^~~~~~~~~~~~~~~~~~~~~~
winopa_launcher.c:34:12: warning: assignment to ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’} from incompatible pointer type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} [-Wincompatible-pointer-types]
34 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Expected a percentage between 5 and 100");
| ^
winopa_launcher.c:40:12: warning: passing argument 1 of ‘snprintf’ from incompatible pointer type [-Wincompatible-pointer-types]
40 | snprintf(hexvalue, 10, "0x%x", 0xffffffff * value / 100);
| ^~~~~~~~
| |
| char **
In file included from /usr/include/pango-1.0/pango/pango-utils.h:25,
from /usr/include/pango-1.0/pango/pango.h:47,
from /usr/include/gtk-3.0/gdk/gdktypes.h:35,
from /usr/include/gtk-3.0/gdk/gdkapplaunchcontext.h:30,
from /usr/include/gtk-3.0/gdk/gdk.h:32,
from /usr/include/gtk-3.0/gtk/gtk.h:30,
from winopa_launcher.c:1:
/usr/include/stdio.h:354:39: note: expected ‘char * restrict’ but argument is of type ‘char **’
354 | extern int snprintf (char *__restrict __s, size_t __maxlen,
| ~~~~~~~~~~~~~~~~~^~~
winopa_launcher.c:43:37: warning: passing argument 1 of ‘gtk_message_dialog_new’ from incompatible pointer type [-Wincompatible-pointer-types]
43 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", errno);
| ^~~~~~
| |
| GtkWidget * {aka struct _GtkWidget *}
In file included from /usr/include/gtk-3.0/gtk/gtk.h:150,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/gtkmessagedialog.h:99:12: note: expected ‘GtkWindow *’ {aka ‘struct _GtkWindow *’} but argument is of type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’}
99 | GtkWidget* gtk_message_dialog_new (GtkWindow *parent,
| ^~~~~~~~~~~~~~~~~~~~~~
winopa_launcher.c:43:12: warning: assignment to ‘GtkMessageDialog *’ {aka ‘struct _GtkMessageDialog *’} from incompatible pointer type ‘GtkWidget *’ {aka ‘struct _GtkWidget *’} [-Wincompatible-pointer-types]
43 | dialog = gtk_message_dialog_new(widget, GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "Could not execute command. [Errno %d]", errno);
| ^
winopa_launcher.c: In function ‘main’:
winopa_launcher.c:61:3: warning: ‘gtk_vbox_new’ is deprecated: Use 'gtk_box_new' instead [-Wdeprecated-declarations]
61 | vbox = gtk_vbox_new(TRUE, 5);
| ^~~~
In file included from /usr/include/gtk-3.0/gtk/gtk.h:286,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/deprecated/gtkvbox.h:61:13: note: declared here
61 | GtkWidget * gtk_vbox_new (gboolean homogeneous,
| ^~~~~~~~~~~~
winopa_launcher.c:66:3: warning: ‘gtk_hbox_new’ is deprecated: Use 'gtk_box_new' instead [-Wdeprecated-declarations]
66 | hbox = gtk_hbox_new(TRUE, 5);
| ^~~~
In file included from /usr/include/gtk-3.0/gtk/gtk.h:262,
from winopa_launcher.c:1:
/usr/include/gtk-3.0/gtk/deprecated/gtkhbox.h:63:13: note: declared here
63 | GtkWidget * gtk_hbox_new (gboolean homogeneous,
| ^~~~~~~~~~~~
/usr/bin/ld: /tmp/ccrQ0vyC.o: in function `destroy':
winopa_launcher.c:(.text+0x21): undefined reference to `g_print'
/usr/bin/ld: winopa_launcher.c:(.text+0x26): undefined reference to `gtk_main_quit'
/usr/bin/ld: /tmp/ccrQ0vyC.o: in function `on_set_btn_clicked':
winopa_launcher.c:(.text+0x6c): undefined reference to `gtk_entry_get_text'
/usr/bin/ld: winopa_launcher.c:(.text+0xad): undefined reference to `g_print'
/usr/bin/ld: winopa_launcher.c:(.text+0xb2): undefined reference to `gtk_window_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0xc7): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0xf1): undefined reference to `gtk_message_dialog_new'
/usr/bin/ld: winopa_launcher.c:(.text+0xfa): undefined reference to `gtk_dialog_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x10c): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x114): undefined reference to `gtk_dialog_run'
/usr/bin/ld: winopa_launcher.c:(.text+0x119): undefined reference to `gtk_widget_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x12b): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x133): undefined reference to `gtk_widget_destroy'
/usr/bin/ld: winopa_launcher.c:(.text+0x162): undefined reference to `g_print'
/usr/bin/ld: winopa_launcher.c:(.text+0x18c): undefined reference to `gtk_message_dialog_new'
/usr/bin/ld: winopa_launcher.c:(.text+0x195): undefined reference to `gtk_dialog_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x1a7): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x1af): undefined reference to `gtk_dialog_run'
/usr/bin/ld: winopa_launcher.c:(.text+0x1b4): undefined reference to `gtk_widget_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x1c6): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x1ce): undefined reference to `gtk_widget_destroy'
/usr/bin/ld: winopa_launcher.c:(.text+0x291): undefined reference to `gtk_message_dialog_new'
/usr/bin/ld: winopa_launcher.c:(.text+0x29a): undefined reference to `gtk_dialog_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x2ac): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x2b4): undefined reference to `gtk_dialog_run'
/usr/bin/ld: winopa_launcher.c:(.text+0x2b9): undefined reference to `gtk_widget_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x2cb): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x2d3): undefined reference to `gtk_widget_destroy'
/usr/bin/ld: /tmp/ccrQ0vyC.o: in function `main':
winopa_launcher.c:(.text+0x316): undefined reference to `gtk_init'
/usr/bin/ld: winopa_launcher.c:(.text+0x320): undefined reference to `gtk_window_new'
/usr/bin/ld: winopa_launcher.c:(.text+0x34f): undefined reference to `g_signal_connect_data'
/usr/bin/ld: winopa_launcher.c:(.text+0x362): undefined reference to `gtk_window_set_title'
/usr/bin/ld: winopa_launcher.c:(.text+0x371): undefined reference to `gtk_vbox_new'
/usr/bin/ld: winopa_launcher.c:(.text+0x381): undefined reference to `gtk_label_new'
/usr/bin/ld: winopa_launcher.c:(.text+0x38a): undefined reference to `gtk_box_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x39c): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x3bb): undefined reference to `gtk_box_pack_end'
/usr/bin/ld: winopa_launcher.c:(.text+0x3ca): undefined reference to `gtk_hbox_new'
/usr/bin/ld: winopa_launcher.c:(.text+0x3d3): undefined reference to `gtk_entry_new'
/usr/bin/ld: winopa_launcher.c:(.text+0x3dc): undefined reference to `gtk_entry_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x3ee): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x3fd): undefined reference to `gtk_entry_set_text'
/usr/bin/ld: winopa_launcher.c:(.text+0x402): undefined reference to `gtk_box_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x414): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x433): undefined reference to `gtk_box_pack_end'
/usr/bin/ld: winopa_launcher.c:(.text+0x43f): undefined reference to `gtk_button_new_with_label'
/usr/bin/ld: winopa_launcher.c:(.text+0x448): undefined reference to `gtk_box_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x45a): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x479): undefined reference to `gtk_box_pack_end'
/usr/bin/ld: winopa_launcher.c:(.text+0x47e): undefined reference to `gtk_box_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x490): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x4af): undefined reference to `gtk_box_pack_end'
/usr/bin/ld: winopa_launcher.c:(.text+0x4b4): undefined reference to `gtk_container_get_type'
/usr/bin/ld: winopa_launcher.c:(.text+0x4c6): undefined reference to `g_type_check_instance_cast'
/usr/bin/ld: winopa_launcher.c:(.text+0x4d8): undefined reference to `gtk_container_add'
/usr/bin/ld: winopa_launcher.c:(.text+0x4e4): undefined reference to `gtk_widget_show_all'
/usr/bin/ld: winopa_launcher.c:(.text+0x4e9): undefined reference to `gtk_main'
collect2: error: ld returned 1 exit status
gtk2也是如此。
我在互联网上找不到解决方案。我运行的是Ubuntu 20.04和gcc 9.3.0，以及刚安装的Ubuntu apt主存储库中的GTK。
EDIT：在注释掉包含errno的代码段后，我发现errno.h没有问题。问题出在gtk本身。但是仍然收到了很多可怕的警告，而且我懒得插入所有足够的类型转换。
已解决
问题出在命令行参数中。我本末倒置。标志必须始终跟在所有其他参数后面。
移动
$ gcc `pkg-config --libs --cflags gtk+-3.0` -o winopa_launcher winopa_launcher.c
至
$ gcc -o winopa_launcher winopa_launcher.c `pkg-config --libs --cflags gtk+-3.0`
可以解决问题。