C++ Gtk和gstreamer链接器错误_C++_Gtk_Gstreamer

C++ Gtk和gstreamer链接器错误

c++ gtk gstreamer

C++ Gtk和gstreamer链接器错误,c++,gtk,gstreamer,C++,Gtk,Gstreamer,我正在尝试从谷歌代码编译这个简单的代码。我已经修复并安装了丢失的库，现在我收到一个链接器错误 vickey@tb:~/work/gst-player-0.0.0$ make gcc -ggdb -Wall -W -Wformat-nonliteral -Wcast-align -Wpointer-arith -Wbad-function-cast -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -Winline -W

我正在尝试从谷歌代码编译这个简单的代码。我已经修复并安装了丢失的库，现在我收到一个链接器错误

vickey@tb:~/work/gst-player-0.0.0$ make
gcc -ggdb -Wall -W -Wformat-nonliteral -Wcast-align -Wpointer-arith -Wbad-function-cast -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -Winline -Wundef -Wnested-externs -Wcast-qual -Wshadow -Wwrite-strings -Wno-unused-parameter -Wfloat-equal -pedantic -ansi -std=c99 `pkg-config --cflags gtk+-2.0` `pkg-config --libs gtk+-2.0` `pkg-config --cflags gstreamer-0.10` `pkg-config --libs gstreamer-0.10` -lgstinterfaces-0.10 ui.c gst-backend.c -o gst-player
In file included from /usr/include/gtk-2.0/gtk/gtk.h:236:0,
                 from ui.c:19:
/usr/include/gtk-2.0/gtk/gtkitemfactory.h:47:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
ui.c: In function ‘toggle_fullscreen’:
ui.c:60:9: warning: passing argument 1 of ‘gtk_window_unfullscreen’ from incompatible pointer type [enabled by default]
/usr/include/gtk-2.0/gtk/gtkwindow.h:340:10: note: expected ‘struct GtkWindow *’ but argument is of type ‘struct GtkWidget *’
ui.c:65:9: warning: passing argument 1 of ‘gtk_window_fullscreen’ from incompatible pointer type [enabled by default]
/usr/include/gtk-2.0/gtk/gtkwindow.h:339:10: note: expected ‘struct GtkWindow *’ but argument is of type ‘struct GtkWidget *’
gst-backend.c: In function ‘backend_query_position’:
gst-backend.c:164:5: warning: pointer targets in passing argument 3 of ‘gst_element_query_position’ differ in signedness [-Wpointer-sign]
/usr/include/gstreamer-0.10/gst/gstutils.h:1047:25: note: expected ‘gint64 *’ but argument is of type ‘guint64 *’
gst-backend.c: In function ‘backend_query_duration’:
gst-backend.c:177:5: warning: pointer targets in passing argument 3 of ‘gst_element_query_duration’ differ in signedness [-Wpointer-sign]
/usr/include/gstreamer-0.10/gst/gstutils.h:1049:25: note: expected ‘gint64 *’ but argument is of type ‘guint64 *’
/tmp/cckH1GSv.o: In function `toggle_paused':
/home/vickey/work/gst-player-0.0.0/ui.c:43: undefined reference to `gtk_button_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:43: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:43: undefined reference to `gtk_button_set_label'
/home/vickey/work/gst-player-0.0.0/ui.c:49: undefined reference to `gtk_button_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:49: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:49: undefined reference to `gtk_button_set_label'
/tmp/cckH1GSv.o: In function `toggle_fullscreen':
/home/vickey/work/gst-player-0.0.0/ui.c:60: undefined reference to `gtk_window_unfullscreen'
/home/vickey/work/gst-player-0.0.0/ui.c:65: undefined reference to `gtk_window_fullscreen'
/tmp/cckH1GSv.o: In function `destroy':
/home/vickey/work/gst-player-0.0.0/ui.c:96: undefined reference to `gtk_main_quit'
/    tmp/cckH1GSv.o: In function `key_press':
/home/vickey/work/gst-player-0.0.0/ui.c:127: undefined reference to `gtk_main_quit'
/tmp/cckH1GSv.o: In function `start':
/home/vickey/work/gst-player-0.0.0/ui.c:167: undefined reference to `gtk_window_new'
/home/vickey/work/gst-player-0.0.0/ui.c:169: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:169: undefined reference to `g_signal_connect_data'
/home/vickey/work/gst-player-0.0.0/ui.c:172: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:172: undefined reference to `g_signal_connect_data'
/home/vickey/work/gst-player-0.0.0/ui.c:175: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:175: undefined reference to `g_signal_connect_data'
/home/vickey/work/gst-player-0.0.0/ui.c:178: undefined reference to `gtk_container_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:178: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:178: undefined reference to `gtk_container_set_border_width'
/home/vickey/work/gst-player-0.0.0/ui.c:180: undefined reference to `gtk_vbox_new'
/home/vickey/work/gst-player-0.0.0/ui.c:182: undefined reference to `gtk_container_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:182: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:182: undefined reference to `gtk_container_add'
/home/vickey/work/gst-player-0.0.0/ui.c:184: undefined reference to `gtk_widget_show'
/home/vickey/work/gst-player-0.0.0/ui.c:186: undefined reference to `gtk_hbox_new'
/home/vickey/work/gst-player-0.0.0/ui.c:188: undefined reference to `gtk_box_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:188: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:188: undefined reference to `gtk_box_pack_end'
/home/vickey/work/gst-player-0.0.0/ui.c:190: undefined reference to `gtk_widget_show'
/home/vickey/work/gst-player-0.0.0/ui.c:193: undefined reference to `gtk_drawing_area_new'
/home/vickey/work/gst-player-0.0.0/ui.c:195: undefined reference to `gtk_box_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:195: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:195: undefined reference to `gtk_box_pack_start'
/home/vickey/work/gst-player-0.0.0/ui.c:197: undefined reference to `gtk_widget_set_size_request'
/home/vickey/work/gst-player-0.0.0/ui.c:199: undefined reference to `gtk_widget_show'
/home/vickey/work/gst-player-0.0.0/ui.c:203: undefined reference to `gtk_button_new_with_label'
/home/vickey/work/gst-player-0.0.0/ui.c:205: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:205: undefined reference to `g_signal_connect_data'
/home/vickey/work/gst-player-0.0.0/ui.c:208: undefined reference to `gtk_box_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:208: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:208: undefined reference to `gtk_box_pack_start'
/home/vickey/work/gst-player-0.0.0/ui.c:210: undefined reference to `gtk_widget_show'
/home/vickey/work/gst-player-0.0.0/ui.c:216: undefined reference to `gtk_button_new_with_label'
/home/vickey/work/gst-player-0.0.0/ui.c:218: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:218: undefined reference to `g_signal_connect_data'
/home/vickey/work/gst-player-0.0.0/ui.c:221: undefined reference to `gtk_box_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:221: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:221: undefined reference to `gtk_box_pack_start'
/home/vickey/work/gst-player-0.0.0/ui.c:223: undefined reference to `gtk_widget_show'
/home/vickey/work/gst-player-0.0.0/ui.c:228: undefined reference to `gtk_adjustment_new'
/home/vickey/work/gst-player-0.0.0/ui.c:229: undefined reference to `gtk_adjustment_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:229: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:229: undefined reference to `gtk_hscale_new'
/home/vickey/work/gst-player-0.0.0/ui.c:231: undefined reference to `gtk_box_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:231: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:231: undefined reference to `gtk_box_pack_end'
/home/vickey/work/gst-player-0.0.0/ui.c:233: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:233: undefined reference to `g_signal_connect_data'
/home/vickey/work/gst-player-0.0.0/ui.c:236: undefined reference to `gtk_widget_show'
/home/vickey/work/gst-player-0.0.0/ui.c:239: undefined reference to `gtk_widget_show'
/tmp/cckH1GSv.o: In function `init':
/    home/vickey/work/gst-player-0.0.0/ui.c:245: undefined reference to `gdk_x11_drawable_get_xid'
/tmp/cckH1GSv.o: In function `timeout':
/home/vickey/work/gst-player-0.0.0/ui.c:275: undefined reference to `gtk_range_get_type'
/home/vickey/work/gst-player-0.0.0/ui.c:275: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/ui.c:275: undefined reference to `gtk_range_set_value'
/tmp/cckH1GSv.o: In function `main':
/home/vickey/work/gst-player-0.0.0/ui.c:285: undefined reference to `gtk_init'
/home/vickey/work/gst-player-0.0.0/ui.c:293: undefined reference to `g_strdup'
/home/vickey/work/gst-player-0.0.0/ui.c:295: undefined reference to `g_strdup_printf'
/home/vickey/work/gst-player-0.0.0/ui.c:299: undefined reference to `g_idle_add'
/home/vickey/work/gst-player-0.0.0/ui.c:300: undefined reference to `g_timeout_add'
/home/vickey/work/gst-player-0.0.0/ui.c:302: undefined reference to `gtk_main'
/home/vickey/work/gst-player-0.0.0/ui.c:304: undefined reference to `g_free'
/tmp/cc9cDvJS.o: In function `bus_cb':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:39: undefined reference to `g_log'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:47: undefined reference to `gst_message_parse_error'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:48: undefined reference to `g_free'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:50: undefined reference to `g_log'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:51: undefined reference to `g_error_free'
/tmp/cc9cDvJS.o: In function `backend_init':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:65: undefined reference to `gst_init'
/tmp/cc9cDvJS.o: In function `backend_play':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:79: undefined reference to `gst_pipeline_new'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:81: undefined reference to `gst_element_factory_make'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:82: undefined reference to `gst_element_factory_make'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:84: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:84: undefined reference to `g_object_set'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:86: undefined reference to `gst_bin_get_type'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:86: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:86: undefined reference to `gst_bin_add'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:90: undefined reference to `gst_pipeline_get_type'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:90: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:90: undefined reference to `gst_pipeline_get_bus'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:91: undefined reference to `gst_bus_add_watch'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:92: undefined reference to `gst_object_unref'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:95: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:95: undefined reference to `g_object_set'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:97: undefined reference to `gst_x_overlay_get_type'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:97: undefined reference to `gst_implements_interface_check'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:99: undefined reference to `gst_x_overlay_get_type'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:99: undefined reference to `gst_implements_interface_cast'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:99: undefined reference to `gst_x_overlay_set_xwindow_id'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:102: undefined reference to `gst_element_set_state'
/tmp/cc9cDvJS.o: In function `backend_stop':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:110: undefined reference to `gst_element_set_state'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:111: undefined reference to `gst_object_get_type'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:111: undefined reference to `g_type_check_instance_cast'
/home/vickey/work/gst-player-0.0.0/gst-backend.c:111: undefined reference to `gst_object_unref'
/tmp/cc9cDvJS.o: In function `backend_pause':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:119: undefined reference to `gst_element_set_state'
/tmp/cc9cDvJS.o: In function `backend_resume':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:125: undefined reference to `gst_element_set_state'
/tmp/cc9cDvJS.o: In function `backend_reset':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:131: undefined reference to `gst_element_seek'
/tmp/cc9cDvJS.o: In function `backend_seek':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:141: undefined reference to `gst_element_seek'
/tmp/cc9cDvJS.o: In function `backend_seek_absolute':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:151: undefined reference to `gst_element_seek'
/tmp/cc9cDvJS.o: In function `backend_query_position':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:164: undefined reference to `gst_element_query_position'
/tmp/cc9cDvJS.o: In function `backend_query_duration':
/home/vickey/work/gst-player-0.0.0/gst-backend.c:177: undefined reference to `gst_element_query_duration'
collect2: ld returned 1 exit status
make: *** [gst-player] Error 1

我想我可能错过了一些库导入，但我无法弄清楚。谢谢

这个问题最有可能是因为链接器在编译过程中看到库中的任何符号之前都不会链接库，因为编译过程中链接到库之后会出现源代码。由于链接器在遇到源代码库中的符号之前不会链接库，因此需要在编译命令开始时移动源代码。当前，

Makefile

在源链接构建中提供如下内容：

 19 gst-player: ui.c gst-backend.c
 20     $(CC) $(CFLAGS) $(GTK_CFLAGS) $(GTK_LIBS) $(GST_CFLAGS) $(GST_LIBS) $+ -o $@

改为：

 19 gst-player: ui.c gst-backend.c
 20     $(CC) $+ $(CFLAGS) $(GTK_CFLAGS) $(GTK_LIBS) $(GST_CFLAGS) $(GST_LIBS) -o $@

（请注意，现在源代码就在

$（CC）

之后）。或者，您可以要求链接器使用

-Wl，-no-as-needed

选项链接库，而不考虑遇到库中的符号。在这种情况下，

Makefile

更改可能如下所示：

 19 gst-player: ui.c gst-backend.c
 20     $(CC) -Wl,--no-as-needed $(CFLAGS) $(GTK_CFLAGS) $(GTK_LIBS) $(GST_CFLAGS) $(GST_LIBS) $+ -o $@

希望这有帮助

问题最有可能是因为链接器在编译过程中看到库中的任何符号之前没有针对库进行链接，因为源代码在编译过程中链接到库之后出现。由于链接器在遇到源代码库中的符号之前不会链接库，因此需要在编译命令开始时移动源代码。当前，

Makefile

在源链接构建中提供如下内容：

 19 gst-player: ui.c gst-backend.c
 20     $(CC) $(CFLAGS) $(GTK_CFLAGS) $(GTK_LIBS) $(GST_CFLAGS) $(GST_LIBS) $+ -o $@

改为：

 19 gst-player: ui.c gst-backend.c
 20     $(CC) $+ $(CFLAGS) $(GTK_CFLAGS) $(GTK_LIBS) $(GST_CFLAGS) $(GST_LIBS) -o $@

（请注意，现在源代码就在

$（CC）

之后）。或者，您可以要求链接器使用

-Wl，-no-as-needed

选项链接库，而不考虑遇到库中的符号。在这种情况下，

Makefile

更改可能如下所示：

 19 gst-player: ui.c gst-backend.c
 20     $(CC) -Wl,--no-as-needed $(CFLAGS) $(GTK_CFLAGS) $(GTK_LIBS) $(GST_CFLAGS) $(GST_LIBS) $+ -o $@

希望这有帮助

这个命令打印什么？-pthread-lgtk-x11-2.0-lgdk-x11-2.0-latk-1.0-lgio-2.0-lpangoft2-1.0-lpangocaro-1.0-lgdk-pixbuf-2.0-lcairo-lpango-1.0-lfreetype-lfontconfig-lgobject-2.0-lgmodule-2.0-lgthread-2.0-lrt-lglib-2.0Hmm，看起来不错。哪里是

libgtk-x11-2.0.so

？命令“

nm-D/path/to/libgtk-x11-2.0.so | grep gtk_button_get_type

pkg config--libs gtk+-2.0

print.-pthread-lgtk-x11-2.0-lgdk-x11-2.0-latk-1.0-lgio-2.0-lpangoft2-1.0-lpangocao-1.0-lgdk pixbuf-2.0-lcairo-lpango-1.0-lfreetype-lfontconfig-lgobject-2.0-2.0-thread-2.0-2.0-lrt-lrt-lgt-1hmm，我觉得不错。哪里是

libgtk-x11-2.0.so

？命令“

nm-D/path/to/libgtk-x11-2.0.so | grep gtk_button_get_type

”显示了什么？（显然，您必须替换libgtk-x11-2.0的路径。因此）@MichaelWild:下面是命令的输出<代码>vickey@tb：/usr/lib/x86_64-linux-gnu$nm-D libgtk-x11-2.0。因此，grep gtk_button_get_type 00000008cc90 T gtk_button_get_type正如下面的解决方案中指出的，源文件是在库之后指定的。当在库之前提到源文件时，它可以很好地编译。太棒了，它工作了！：D但遗憾的是，它并没有正确编译<代码>vickey@tb：~/work/gst-player-0.0.0$。/gst-player打开\u Music.ogg**（gst-player:8342）：警告**：错误：无法打开资源进行读取该文件可以与MPlayer配合使用。我想知道现在可能有什么问题。谢谢你，另一个，一个懦夫！你为我节省了很多时间！但我有一些问题要问维汉·维尔玛。我使用了GStreamer1.0，并对代码进行了一些重构。它在编译和链接后是否工作？我有一个错误，看起来好像没有加载媒体源等…很好，它工作了！：D但遗憾的是，它并没有正确编译<代码>vickey@tb：~/work/gst-player-0.0.0$。/gst-player打开\u Music.ogg**（gst-player:8342）：警告**：错误：无法打开资源进行读取该文件可以与MPlayer配合使用。我想知道现在可能有什么问题。谢谢你，另一个，一个懦夫！你为我节省了很多时间！但我有一些问题要问维汉·维尔玛。我使用了GStreamer1.0，并对代码进行了一些重构。它在编译和链接后是否工作？我有一个错误，看起来好像没有加载媒体源等。。。