XkbQueryExtension: symbol not found (musl C) #820

totaam · 2015-03-02T19:34:16Z

Issue migrated from trac ticket # 820

component: packaging | priority: major | resolution: fixed | keywords: musl

2015-03-02 19:34:16: itoffshore created the issue

I've successfully built packages for xpra / cython & pgen under Alpine Linux (which uses Musl C not Glibc) & have the following dependencies installed:

>>> xpra*: Tracing dependencies...
	py-gobject
	py-gtk
	xf86-video-dummy
	so:libX11.so.6
	so:libXcomposite.so.1
	so:libXdamage.so.1
	so:libXext.so.6
	so:libXfixes.so.3
	so:libXrandr.so.2
	so:libXtst.so.6
	so:libavcodec.so.56
	so:libavutil.so.54
	so:libc.musl-x86.so.1
	so:libgdk-x11-2.0.so.0
	so:libpython2.7.so.1.0
	so:libswscale.so.3
	so:libvpx.so.1
	so:libwebp.so.5
	so:libx264.so.142
	so:libxkbfile.so.1

But crash with the following runtime relocation error under 64 bit:

musl64 [~/aports/testing/xpra]$ cat /home/stuart/.xpra/:100.log
could not determine ld path for x86_64, please file an xpra bug

X.Org X Server 1.16.3
Release Date: 2014-12-20
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.10.33-0-grsec x86_64 
Current Operating System: Linux musl64 3.16-0.bpo.3-amd64 #1 SMP Debian 3.16.5-1~bpo70+1 (2014-11-02) x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-3.16-0.bpo.3-amd64 root=/dev/mapper/vg0-root ro quiet cgroup_enable=memory,namespace
Build Date: 23 December 2014  10:23:51AM
 
Current version of pixman: 0.32.6
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(++) Log file: "/home/stuart/.xpra/Xorg.:100.log", Time: Sat Feb 28 02:44:44 2015
(++) Using config file: "/etc/xpra/xorg.conf"
(==) Using config directory: "/etc/X11/xorg.conf.d"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"

-* (Xpra:319): WARNING **: Trying to register gtype 'GMountMountFlags' as enum when in fact it is of type 'GFlags'

-* (Xpra:319): WARNING **: Trying to register gtype 'GDriveStartFlags' as enum when in fact it is of type 'GFlags'

-* (Xpra:319): WARNING **: Trying to register gtype 'GSocketMsgFlags' as enum when in fact it is of type 'GFlags'
xpra main error:
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/xpra/scripts/main.py", line 103, in main
    return run_mode(script_file, err, options, args, mode, defaults)
  File "/usr/lib/python2.7/site-packages/xpra/scripts/main.py", line 760, in run_mode
    return run_server(error_cb, options, mode, script_file, args)
  File "/usr/lib/python2.7/site-packages/xpra/scripts/server.py", line 948, in run_server
    from xpra.x11.gtk_x11 import gdk_display_source
  File "/usr/lib/python2.7/site-packages/xpra/x11/gtk_x11/__init__.py", line 7, in <module>
    from xpra.x11.gtk_x11.gdk_bindings import *
ImportError: Error relocating /usr/lib/python2.7/site-packages/xpra/x11/gtk_x11/gdk_bindings.so: XkbQueryExtension: symbol not found

2015-02-28 02:44:45,008 removing socket /home/stuart/.xpra/musl64-100

(Alpine has /usr/lib on 64 bit not /usr/lib64) - but I also get exactly the same error on 32 bit:

** (Xpra:319): WARNING **: Trying to register gtype 'GMountMountFlags' as enum when in fact it is of type 'GFlags'

-* (Xpra:319): WARNING **: Trying to register gtype 'GDriveStartFlags' as enum when in fact it is of type 'GFlags'

-* (Xpra:319): WARNING **: Trying to register gtype 'GSocketMsgFlags' as enum when in fact it is of type 'GFlags'
Xlib:  extension "RANDR" missing on display ":100".
Xlib:  extension "RANDR" missing on display ":100".
xpra main error:
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/xpra/scripts/main.py", line 103, in main
    return run_mode(script_file, err, options, args, mode, defaults)
  File "/usr/lib/python2.7/site-packages/xpra/scripts/main.py", line 760, in run_mode
    return run_server(error_cb, options, mode, script_file, args)
  File "/usr/lib/python2.7/site-packages/xpra/scripts/server.py", line 948, in run_server
    from xpra.x11.gtk_x11 import gdk_display_source
  File "/usr/lib/python2.7/site-packages/xpra/x11/gtk_x11/__init__.py", line 7, in <module>
    from xpra.x11.gtk_x11.gdk_bindings import *
ImportError: Error relocating /usr/lib/python2.7/site-packages/xpra/x11/gtk_x11/gdk_bindings.so: XkbQueryExtension: symbol not found

2015-03-01 15:40:05,283 removing socket /home/stuart/.xpra/musl32-100

The 2 systems are Alpine LXC Guests. Any clues where I should be looking to fix this this ?

The text was updated successfully, but these errors were encountered:

totaam · 2015-03-03T02:31:46Z

2015-03-03 02:31:46: antoine changed owner from antoine to itoffshore

totaam · 2015-03-03T02:31:46Z

2015-03-03 02:31:46: antoine commented

What do you see with:
ldd /usr/lib/python2.7/site-packages/xpra/x11/gtk_x11/gdk_bindings.so
Please also post the compilation output, the lines that compile and link the gdk bindings.

XkbQueryExtension is defined in libX11, so I don't understand why your library would be missing this symbol. Works on every other platform we build for (of which there are many).

See:
$ nm -D /usr/lib64/libX11.so* | grep -i XkbQueryExtension

totaam · 2015-03-04T14:25:55Z

2015-03-04 14:25:55: itoffshore uploaded file `build.log` (139.7 KiB)

32 bit build log

totaam · 2015-03-04T14:44:45Z

2015-03-04 14:44:45: itoffshore commented

Sorry for the delay in replying - I did not receive an email with your reply.

32 Bit:

musl32 [~]$ ldd /usr/lib/python2.7/site-packages/xpra/x11/gtk_x11/gdk_bindings.so
	ldd (0xf7690000)
	libgdk-x11-2.0.so.0 => /usr/lib/libgdk-x11-2.0.so.0 (0xf75a0000)
	libXdamage.so.1 => /usr/lib/libXdamage.so.1 (0xf7598000)
	libXfixes.so.3 => /usr/lib/libXfixes.so.3 (0xf7590000)
	libpython2.7.so.1.0 => /usr/lib/libpython2.7.so.1.0 (0xf73f8000)
	libc.musl-x86.so.1 => ldd (0xf7690000)
	libpangocairo-1.0.so.0 => /usr/lib/libpangocairo-1.0.so.0 (0xf73e8000)
	libpango-1.0.so.0 => /usr/lib/libpango-1.0.so.0 (0xf7398000)
	libgio-2.0.so.0 => /usr/lib/libgio-2.0.so.0 (0xf7218000)
	libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0xf71d8000)
	libXrender.so.1 => /usr/lib/libXrender.so.1 (0xf71c8000)
	libXi.so.6 => /usr/lib/libXi.so.6 (0xf71b8000)
	libXrandr.so.2 => /usr/lib/libXrandr.so.2 (0xf71a8000)
	libXcursor.so.1 => /usr/lib/libXcursor.so.1 (0xf7198000)
	libXcomposite.so.1 => /usr/lib/libXcomposite.so.1 (0xf7190000)
	libgdk_pixbuf-2.0.so.0 => /usr/lib/libgdk_pixbuf-2.0.so.0 (0xf7170000)
	libgobject-2.0.so.0 => /usr/lib/libgobject-2.0.so.0 (0xf7128000)
	libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0xf7000000)
	libintl.so.8 => /usr/lib/libintl.so.8 (0xf6ff0000)
	libcairo.so.2 => /usr/lib/libcairo.so.2 (0xf6ee8000)
	libX11.so.6 => /usr/lib/libX11.so.6 (0xf6db8000)
	libXext.so.6 => /usr/lib/libXext.so.6 (0xf6da0000)
	libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0xf6d80000)
	libpangoft2-1.0.so.0 => /usr/lib/libpangoft2-1.0.so.0 (0xf6d68000)
	libgmodule-2.0.so.0 => /usr/lib/libgmodule-2.0.so.0 (0xf6d60000)
	libgthread-2.0.so.0 => /usr/lib/libgthread-2.0.so.0 (0xf6d58000)
	libharfbuzz.so.0 => /usr/lib/libharfbuzz.so.0 (0xf6d08000)
	libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0xf6c68000)
	libffi.so.6 => /usr/lib/libffi.so.6 (0xf6c60000)
	libz.so.1 => /lib/libz.so.1 (0xf6c48000)
	libexpat.so.1 => /usr/lib/libexpat.so.1 (0xf6c20000)
	libpng16.so.16 => /usr/lib/libpng16.so.16 (0xf6be8000)
	libpixman-1.so.0 => /usr/lib/libpixman-1.so.0 (0xf6b40000)
	libxcb-shm.so.0 => /usr/lib/libxcb-shm.so.0 (0xf6b38000)
	libxcb-render.so.0 => /usr/lib/libxcb-render.so.0 (0xf6b28000)
	libxcb.so.1 => /usr/lib/libxcb.so.1 (0xf6b00000)
	libgraphite2.so.3 => /usr/lib/libgraphite2.so.3 (0xf6ae0000)
	libXau.so.6 => /usr/lib/libXau.so.6 (0xf6ad8000)
	libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0xf6ad0000)

64 bit:

musl64 [~]$ ldd /usr/lib/python2.7/site-packages/xpra/x11/gtk_x11/gdk_bindings.so
	ldd (0x7fa8982e8000)
	libgdk-x11-2.0.so.0 => /usr/lib/libgdk-x11-2.0.so.0 (0x7fa897e08000)
	libXdamage.so.1 => /usr/lib/libXdamage.so.1 (0x7fa897c00000)
	libXfixes.so.3 => /usr/lib/libXfixes.so.3 (0x7fa8979f8000)
	libpython2.7.so.1.0 => /usr/lib/libpython2.7.so.1.0 (0x7fa897668000)
	libc.musl-x86_64.so.1 => ldd (0x7fa8982e8000)
	libpangocairo-1.0.so.0 => /usr/lib/libpangocairo-1.0.so.0 (0x7fa897458000)
	libpango-1.0.so.0 => /usr/lib/libpango-1.0.so.0 (0x7fa897208000)
	libgio-2.0.so.0 => /usr/lib/libgio-2.0.so.0 (0x7fa896e88000)
	libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x7fa896c48000)
	libXrender.so.1 => /usr/lib/libXrender.so.1 (0x7fa896a38000)
	libXi.so.6 => /usr/lib/libXi.so.6 (0x7fa896828000)
	libXrandr.so.2 => /usr/lib/libXrandr.so.2 (0x7fa896618000)
	libXcursor.so.1 => /usr/lib/libXcursor.so.1 (0x7fa896408000)
	libXcomposite.so.1 => /usr/lib/libXcomposite.so.1 (0x7fa896200000)
	libgdk_pixbuf-2.0.so.0 => /usr/lib/libgdk_pixbuf-2.0.so.0 (0x7fa895fe0000)
	libgobject-2.0.so.0 => /usr/lib/libgobject-2.0.so.0 (0x7fa895d90000)
	libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x7fa895a68000)
	libintl.so.8 => /usr/lib/libintl.so.8 (0x7fa895858000)
	libcairo.so.2 => /usr/lib/libcairo.so.2 (0x7fa895558000)
	libX11.so.6 => /usr/lib/libX11.so.6 (0x7fa895220000)
	libXext.so.6 => /usr/lib/libXext.so.6 (0x7fa895008000)
	libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x7fa894df0000)
	libpangoft2-1.0.so.0 => /usr/lib/libpangoft2-1.0.so.0 (0x7fa894bd8000)
	libgmodule-2.0.so.0 => /usr/lib/libgmodule-2.0.so.0 (0x7fa8949d0000)
	libgthread-2.0.so.0 => /usr/lib/libgthread-2.0.so.0 (0x7fa8947c8000)
	libharfbuzz.so.0 => /usr/lib/libharfbuzz.so.0 (0x7fa894580000)
	libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x7fa8942e8000)
	libffi.so.6 => /usr/lib/libffi.so.6 (0x7fa8940e0000)
	libz.so.1 => /lib/libz.so.1 (0x7fa893ec8000)
	libexpat.so.1 => /usr/lib/libexpat.so.1 (0x7fa893ca0000)
	libpng16.so.16 => /usr/lib/libpng16.so.16 (0x7fa893a70000)
	libpixman-1.so.0 => /usr/lib/libpixman-1.so.0 (0x7fa8937c8000)
	libxcb-shm.so.0 => /usr/lib/libxcb-shm.so.0 (0x7fa8935c0000)
	libxcb-render.so.0 => /usr/lib/libxcb-render.so.0 (0x7fa8933b0000)
	libxcb.so.1 => /usr/lib/libxcb.so.1 (0x7fa893188000)
	libgraphite2.so.3 => /usr/lib/libgraphite2.so.3 (0x7fa892f70000)
	libXau.so.6 => /usr/lib/libXau.so.6 (0x7fa892d68000)
	libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x7fa892b60000)

(there is no /usr/lib64 in Alpine Linux)

musl32 [~]$ nm -D /usr/lib/libX11.so* | grep -i XkbQueryExtension
00080010 T XkbQueryExtension
00080010 T XkbQueryExtension

musl64 [~]$ nm -D /usr/lib/libX11.so* | grep -i XkbQueryExtension
0000000000085e4c T XkbQueryExtension
0000000000085e4c T XkbQueryExtension

Compilation of the GDK Bindings (32 bit build log also attached):

building 'xpra.x11.gtk_x11.gdk_display_source' extension
creating build/temp.linux-i686-2.7/xpra/x11/gtk_x11
gcc -DNDEBUG -Os -fomit-frame-pointer -Os -fomit-frame-pointer -Os -fomit-frame-pointer -fPIC -I/usr/include/pygtk-2.0 -I/usr/lib/libffi-3.2.1/include -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/python2.7 -c xpra/x11/gtk_x11/gdk_display_source.c -o build/temp.linux-i686-2.7/xpra/x11/gtk_x11/gdk_display_source.o -Wall -Werror=implicit-function-declaration -fPIC
gcc -shared -Wl,--as-needed -Wl,--as-needed -Os -fomit-frame-pointer -Os -fomit-frame-pointer build/temp.linux-i686-2.7/xpra/x11/gtk_x11/gdk_display_source.o -L/usr/lib -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lintl -lfontconfig -lfreetype -lpython2.7 -o build/lib.linux-i686-2.7/xpra/x11/gtk_x11/gdk_display_source.so -pthread -Wall
building 'xpra.x11.gtk_x11.gdk_bindings' extension
gcc -DNDEBUG -Os -fomit-frame-pointer -Os -fomit-frame-pointer -Os -fomit-frame-pointer -fPIC -I/usr/include/pygtk-2.0 -I/usr/lib/libffi-3.2.1/include -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/python2.7 -c xpra/x11/gtk_x11/gdk_bindings.c -o build/temp.linux-i686-2.7/xpra/x11/gtk_x11/gdk_bindings.o -Wall -Werror=implicit-function-declaration -fPIC
xpra/x11/gtk_x11/gdk_bindings.c: In function '__pyx_f_4xpra_3x11_7gtk_x11_12gdk_bindings_x_event_filter':
xpra/x11/gtk_x11/gdk_bindings.c:12780:15: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
               __pyx_t_1 # __Pyx_PyBool_FromLong((!(!__pyx_t_11))); if (unlikely(!__pyx_t_1)) {__pyx_filename__pyx_f[0]; __pyx_lineno # 1038; __pyx_clineno__LINE__; goto __pyx_L17_error;}
               ^
xpra/x11/gtk_x11/gdk_bindings.c:12780:15: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
xpra/x11/gtk_x11/gdk_bindings.c: In function '__pyx_pf_4xpra_3x11_7gtk_x11_12gdk_bindings_32init_x11_filter':
xpra/x11/gtk_x11/gdk_bindings.c:13427:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
     __Pyx_INCREF(Py_False);
     ^
xpra/x11/gtk_x11/gdk_bindings.c:13469:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
   __Pyx_INCREF(Py_True);
   ^
xpra/x11/gtk_x11/gdk_bindings.c: In function '__pyx_pf_4xpra_3x11_7gtk_x11_12gdk_bindings_34cleanup_x11_filter':
xpra/x11/gtk_x11/gdk_bindings.c:13547:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
     __Pyx_INCREF(Py_False);
     ^
xpra/x11/gtk_x11/gdk_bindings.c:13575:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
   __Pyx_INCREF(Py_True);
   ^
gcc -shared -Wl,--as-needed -Wl,--as-needed -Os -fomit-frame-pointer -Os -fomit-frame-pointer build/temp.linux-i686-2.7/xpra/x11/gtk_x11/gdk_bindings.o -L/usr/lib -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lintl -lfontconfig -lfreetype -lXdamage -lXfixes -lpython2.7 -o build/lib.linux-i686-2.7/xpra/x11/gtk_x11/gdk_bindings.so -pthread -Wall
building 'xpra.codecs.argb.argb' extension
creating build/temp.linux-i686-2.7/xpra/codecs/argb
gcc -DNDEBUG -Os -fomit-frame-pointer -Os -fomit-frame-pointer -Os -fomit-frame-pointer -fPIC -I/usr/include/python2.7 -c xpra/codecs/argb/argb.c -o build/temp.linux-i686-2.7/xpra/codecs/argb/argb.o
gcc -DNDEBUG -Os -fomit-frame-pointer -Os -fomit-frame-pointer -Os -fomit-frame-pointer -fPIC -I/usr/include/python2.7 -c xpra/codecs/buffers/old_buffers.c -o build/temp.linux-i686-2.7/xpra/codecs/buffers/old_buffers.o
gcc -shared -Wl,--as-needed -Wl,--as-needed -Os -fomit-frame-pointer -Os -fomit-frame-pointer build/temp.linux-i686-2.7/xpra/codecs/argb/argb.o build/temp.linux-i686-2.7/xpra/codecs/buffers/old_buffers.o -L/usr/lib -lpython2.7 -o build/lib.linux-i686-2.7/xpra/codecs/argb/argb.so
building 'xpra.gtk_common.gdk_atoms' extension
creating build/temp.linux-i686-2.7/xpra/gtk_common
gcc -DNDEBUG -Os -fomit-frame-pointer -Os -fomit-frame-pointer -Os -fomit-frame-pointer -fPIC -I/usr/include/pygtk-2.0 -I/usr/lib/libffi-3.2.1/include -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/python2.7 -c xpra/gtk_common/gdk_atoms.c -o build/temp.linux-i686-2.7/xpra/gtk_common/gdk_atoms.o -Wall -Werror=implicit-function-declaration -fPIC
gcc -shared -Wl,--as-needed -Wl,--as-needed -Os -fomit-frame-pointer -Os -fomit-frame-pointer build/temp.linux-i686-2.7/xpra/gtk_common/gdk_atoms.o -L/usr/lib -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lintl -lfontconfig -lfreetype -lpython2.7 -o build/lib.linux-i686-2.7/xpra/gtk_common/gdk_atoms.so -pthread -Wall

I am sending a patch in to Alpine to update 'setxkbmap' to 1.3.0 so it has the '-query' option

totaam · 2015-03-04T16:59:31Z

2015-03-04 16:59:31: itoffshore commented

I updated setxkbmap to version 1.3.0

& tried adding '-fno-strict-aliasing' to setup.py:
--- xpra-0.14.19/setup.py
+++ xpra-0.14.19/setup.py.new
@@ -619,7 +619,7 @@
             eifd = "-Werror-implicit-function-declaration"
         add_to_keywords(kw, 'extra_compile_args', eifd)
     if PIC_ENABLED and not is_msvc():
-        add_to_keywords(kw, 'extra_compile_args', "-fPIC")
+        add_to_keywords(kw, 'extra_compile_args', "-fno-strict-aliasing")
     if debug_ENABLED:
         if is_msvc():
             add_to_keywords(kw, 'extra_compile_args', '/Zi')
& this removed the gdk strict anti-aliasing warnings (see attached build2.log) - but the runtime relocation error still persists.

totaam · 2015-03-04T17:00:41Z

2015-03-04 17:00:41: itoffshore uploaded file `build2.log` (126.6 KiB)

32 bit build with strict anti-aliasing disabled

totaam · 2015-03-05T05:01:50Z

2015-03-05 05:01:50: totaam commented

Sorry, but this is beyond me.
A shot in the dark: maybe you would need to link against libX11 directly?
As in, adding -lX11 to the linker stage?
If not, best to ask someone who understands linking better than I do.. sorry.

totaam · 2015-03-23T22:45:17Z

2015-03-23 22:45:17: itoffshore commented

Explicitly linking to libX11 :

building 'xpra.x11.gtk_x11.gdk_bindings' extension
gcc -DNDEBUG -Os -fomit-frame-pointer -Os -fomit-frame-pointer -Os -fomit-frame-pointer -fPIC -I/usr/include/pygtk-2.0 -I/usr/lib/libffi-3.2.1/include -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/python2.7 -c xpra/x11/gtk_x11/gdk_bindings.c -o build/temp.linux-i686-2.7/xpra/x11/gtk_x11/gdk_bindings.o -Wall -Werror=implicit-function-declaration -fPIC
xpra/x11/gtk_x11/gdk_bindings.c: In function '__pyx_f_4xpra_3x11_7gtk_x11_12gdk_bindings_x_event_filter':
xpra/x11/gtk_x11/gdk_bindings.c:12780:15: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
               __pyx_t_1 # __Pyx_PyBool_FromLong((!(!__pyx_t_11))); if (unlikely(!__pyx_t_1)) {__pyx_filename__pyx_f[0]; __pyx_lineno # 1038; __pyx_clineno__LINE__; goto __pyx_L17_error;}
               ^
xpra/x11/gtk_x11/gdk_bindings.c:12780:15: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
xpra/x11/gtk_x11/gdk_bindings.c: In function '__pyx_pf_4xpra_3x11_7gtk_x11_12gdk_bindings_32init_x11_filter':
xpra/x11/gtk_x11/gdk_bindings.c:13427:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
     __Pyx_INCREF(Py_False);
     ^
xpra/x11/gtk_x11/gdk_bindings.c:13469:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
   __Pyx_INCREF(Py_True);
   ^
xpra/x11/gtk_x11/gdk_bindings.c: In function '__pyx_pf_4xpra_3x11_7gtk_x11_12gdk_bindings_34cleanup_x11_filter':
xpra/x11/gtk_x11/gdk_bindings.c:13547:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
     __Pyx_INCREF(Py_False);
     ^
xpra/x11/gtk_x11/gdk_bindings.c:13575:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
   __Pyx_INCREF(Py_True);
   ^
gcc -shared -Wl,--as-needed -Wl,--as-needed -lX11 -Os -fomit-frame-pointer -Os -fomit-frame-pointer build/temp.linux-i686-2.7/xpra/x11/gtk_x11/gdk_bindings.o -L/usr/lib -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lintl -lfontconfig -lfreetype -lXdamage -lXfixes -lpython2.7 -o build/lib.linux-i686-2.7/xpra/x11/gtk_x11/gdk_bindings.so -pthread -Wall

unfortunately did not solve the gdk relocation error:

ImportError: Error relocating /usr/lib/python2.7/site-packages/xpra/x11/gtk_x11/gdk_bindings.so: XkbQueryExtension: symbol not found

setxkbmap is now version 1.3.0 in Alpine & has -query

totaam · 2015-04-14T16:55:03Z

2015-04-14 16:55:03: antoine changed status from new to closed

totaam · 2015-04-14T16:55:03Z

2015-04-14 16:55:03: antoine set resolution to needinfo

totaam · 2015-04-14T16:55:03Z

2015-04-14 16:55:03: antoine commented

I am closing this as needinfo because this looks like a toolchain issue and I am not going to install yet another distribution to investigate.

If you do find out the answer, please post it here.

totaam · 2015-04-14T19:48:14Z

2015-04-14 19:48:14: itoffshore commented

I will keep investigating. An Alpine LXC container is 10 meg:
lxc-create -n guest1 -f /etc/lxc/lxc.conf -t alpine

totaam · 2016-04-22T21:11:39Z

2016-04-22 21:11:39: urzds changed status from closed to reopened

totaam · 2016-04-22T21:11:39Z

2016-04-22 21:11:39: urzds removed resolution (was needinfo)

totaam · 2016-04-22T21:11:39Z

2016-04-22 21:11:39: urzds commented

This is a simple case of underlinking, which there are more instances of:

ImportError: Error relocating /usr/lib/python2.7/site-packages/xpra/x11/gtk_x11/gdk_bindings.so: XkbQueryExtension: symbol not found
ImportError: Error relocating /usr/lib/python2.7/site-packages/xpra/x11/gtk2/gdk_bindings.so: XShapeQueryExtension: symbol not found
ImportError: Error relocating /usr/lib/python2.7/site-packages/xpra/x11/bindings/window_bindings.so: XInternAtom: symbol not found
ImportError: Error relocating /usr/lib/python2.7/site-packages/xpra/x11/bindings/ximage.so: XGetImage: symbol not found

It's mostly just a missing dependency on libX11.so, but gdk_bindings.so also needs libXext.so in addition.

The following sed snippet fixes it:

        sed -i setup.py \
                -e '/GDK_BINDINGS_PACKAGES = PYGTK_PACKAGES/s/"xfixes"/"x11", "xext", "xfixes"/' \
                -e 's/pkgconfig("xtst", "xfixes", "xcomposite", "xdamage", "xext")/pkgconfig("x11", "xtst", "xfixes", "xcomposite", "xdamage", "xext")/' \
                -e 's/pkgconfig("xcomposite", "xdamage", "xext")/pkgconfig("x11", "xcomposite", "xdamage", "xext")/'

Before:

/ # scanelf -n /usr/lib/python2.7/site-packages/xpra/x11/gtk2/gdk_bindings.so
 TYPE   NEEDED FILE 
ET_DYN libgdk-x11-2.0.so.0,libXdamage.so.1,libXfixes.so.3,libpython2.7.so.1.0,libc.musl-x86_64.so.1 /usr/lib/python2.7/site-packages/xpra/x11/gtk2/gdk_bindings.so 
/ # scanelf -n /usr/lib/python2.7/site-packages/xpra/x11/bindings/window_bindings.so
 TYPE   NEEDED FILE 
ET_DYN libXcomposite.so.1,libXdamage.so.1,libXfixes.so.3,libXext.so.6,libpython2.7.so.1.0,libc.musl-x86_64.so.1 /usr/lib/python2.7/site-packages/xpra/x11/bindings/window_bindings.so 
/ # scanelf -n /usr/lib/python2.7/site-packages/xpra/x11/bindings/ximage.so
 TYPE   NEEDED FILE 
ET_DYN libXcomposite.so.1,libXext.so.6,libpython2.7.so.1.0,libc.musl-x86_64.so.1 /usr/lib/python2.7/site-packages/xpra/x11/bindings/ximage.so

After:

/ # scanelf -n /usr/lib/python2.7/site-packages/xpra/x11/gtk2/gdk_bindings.so
 TYPE   NEEDED FILE 
ET_DYN libgdk-x11-2.0.so.0,libX11.so.6,libXext.so.6,libXdamage.so.1,libXfixes.so.3,libpython2.7.so.1.0,libc.musl-x86_64.so.1 /usr/lib/python2.7/site-packages/xpra/x11/gtk2/gdk_bindings.so 
/ # scanelf -n /usr/lib/python2.7/site-packages/xpra/x11/bindings/window_bindings.so
 TYPE   NEEDED FILE 
ET_DYN libX11.so.6,libXcomposite.so.1,libXdamage.so.1,libXfixes.so.3,libXext.so.6,libpython2.7.so.1.0,libc.musl-x86_64.so.1 /usr/lib/python2.7/site-packages/xpra/x11/bindings/window_bindings.so 
/ # scanelf -n /usr/lib/python2.7/site-packages/xpra/x11/bindings/ximage.so
 TYPE   NEEDED FILE 
ET_DYN libX11.so.6,libXcomposite.so.1,libXext.so.6,libpython2.7.so.1.0,libc.musl-x86_64.so.1 /usr/lib/python2.7/site-packages/xpra/x11/bindings/ximage.so

totaam · 2016-04-23T01:45:58Z

2016-04-23 01:45:58: itoffshore commented

Building with the sed fix above (thank you urzds) now shows output from xorg in the xpra logs & asks to file a bug for ld path not being found:

could not determine ld path for x86_64, please file an xpra bug
2016-04-23 00:45:57,353 Warning: failed to load the mdns avahi publisher: No module named avahi
2016-04-23 00:45:57,354  either fix your installation or use the 'mdns=no' option

X.Org X Server 1.18.0
Release Date: 2015-11-09
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.18.20-1-grsec x86_64 
Current Operating System: Linux alpine64-kvm 4.1.20-0-grsec #1-Alpine SMP Mon Mar 21 15:49:51 GMT 2016 x86_64
Build Date: 10 November 2015  03:35:56PM
 
Current version of pixman: 0.32.8
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(++) Log file: "/home/stuart/.xpra/Xorg.:100.log", Time: Sat Apr 23 00:45:57 2016
(++) Using config file: "/etc/xpra/xorg.conf"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(EE) 
Fatal server error:
(EE) no screens found(EE) 
(EE) 
Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
(EE) Please also check the log file at "/home/stuart/.xpra/Xorg.:100.log" for additional information.
(EE) 
(EE) Server terminated with error (1). Closing log file.
could not connect to X server on display ':100' after 3 seconds
2016-04-23 00:46:00,359 removing socket /home/stuart/.xpra/alpine64-kvm-100

totaam · 2016-04-23T04:34:00Z

2016-04-23 04:34:00: antoine commented

@urzds: thanks, applied in r12471. (not sure why pkgconfig doesn't list those libraries if we are supposed to link against them)

@itoffshore: the [/browser/xpra/trunk/src/scripts/xpra_Xdummy xpra_Xdummy] launch script needs to locate ld-linux.so to run Xorg nosuid, where is it located in your case? (you can try adding your location to that script to see if that works)

totaam · 2016-04-23T14:12:53Z

2016-04-23 14:12:53: devurandom commented

not sure why pkgconfig doesn't list those libraries if we are supposed to link against them

You yourself are using functions from those libraries. It's not caused by the libraries you link to, but by your own code. (At least in the cases I checked...)

@itoffshore: I ran into the same issue. There seems to be some case of underlinking in dummy_drv.so -- or maybe XOrg drivers are not supposed to link against XOrg modules by design... You can workaround the issue by placing the following in etc/xpra/xorg.conf:
Section "Module"
  Load "fb"
EndSection
Since I am not yet sure what the appropriate fix is, I first reported a bug against Alpine to get their XOrg maintainers into the boat: https://bugs.alpinelinux.org/issues/5478

totaam · 2016-04-23T14:37:11Z

2016-04-23 14:37:11: antoine commented

You yourself are using functions from those libraries.
[[BR]]
@devurandom: indeed we are. Not sure how I missed that, or how it built properly until now!

@itoffshore: I would fix the ld path suid problem before trying to load other X11 modules. Xdummy should not run as root.

totaam · 2016-04-23T14:58:29Z

2016-04-23 14:58:29: itoffshore commented

The underlinking is probably caused by Musl C not supporting lazy loading of modules in xorg.

Here is a patch for Xdummy to detect ld-musl-*.so
--- xpra-0.16.3/scripts/xpra_Xdummy
+++ xpra-0.16.3/scripts/xpra_Xdummy.new
@@ -2,7 +2,7 @@
 #@PydevCodeAnalysisIgnore
 
 find_ld_linux() {
-	arch=$(uname -m)
+	local arch=$(uname -m) ldmusl=$(ls /lib | grep ^ld-musl)
 
 	if [ $arch = "x86_64" ]; then
 		LD_LINUX='/lib64/ld-linux-x86-64.so.2'
@@ -27,6 +27,10 @@
 	else
 		#suitable for: powerpc/ppc, mips/mipsel, s390 and others:
 		LD_LINUX='/lib/ld.so.1'
+	fi
+		# Musl C / Alpine Linux
+	if [ -n "$ldmusl" ]; then
+		LD_LINUX="/lib/$ldmusl"
 	fi
 
 	if [ ! -x "$LD_LINUX" ]; then
@devurandom - I am revising the xpra 0.16.3 patch in Alpine to include the above fixes. I am also adding some more python depends for lz4 gtkglext / rencode.

totaam · 2016-04-23T15:13:31Z

2016-04-23 15:13:31: antoine commented

@itoffshore: thanks for the patch.
I'm not sure about the use of "local" here, is this going to be supported by all posix shells? (even the very limited ones)

Also, I would rather avoid the "ls" subshell command since it isn't needed for 99.9% of users, can we do something like this instead:
	if [ ! -x "$LD_LINUX" ]; then
		# Musl C / Alpine Linux
		ldmusl=$(ls /lib | grep ^ld-musl)
		if [ -n "$ldmusl" ]; then
			LD_LINUX="/lib/$ldmusl"
		else
			LD_LINUX=''
			echo "could not determine ld path for $arch, please file an xpra bug"
		fi
	fi

totaam · 2016-04-23T15:26:23Z

2016-04-23 15:26:23: itoffshore commented

Yes - a patch without local

--- xpra-0.16.3/scripts/xpra_Xdummy
+++ xpra-0.16.3/scripts/xpra_Xdummy.new
@@ -30,8 +30,14 @@
 	fi
 
 	if [ ! -x "$LD_LINUX" ]; then
-		LD_LINUX=''
-		echo "could not determine ld path for $arch, please file an xpra bug"
+		# Musl C / Alpine Linux
+		ldmusl=$(ls /lib | grep ^ld-musl)
+		if [ -n "$ldmusl" ]; then
+			LD_LINUX="/lib/$ldmusl"
+		else
+			LD_LINUX=''
+			echo "could not determine ld path for $arch, please file an xpra bug"
+		fi
 	fi
 }

totaam · 2016-04-23T15:28:42Z

2016-04-23 15:28:42: antoine commented

Thanks, applied in r12475.

totaam · 2016-04-23T18:08:25Z

2016-04-23 18:08:25: devurandom commented

@devurandom: indeed we are. Not sure how I missed that, or how it built properly until now!

You probably were lucky that on the more bloated distros (no offence intended) some of the other libraries you use linked against e.g. libX11.

The underlinking is probably caused by Musl C not supporting lazy loading of modules in xorg.

So you say that there probably no good fix for https://bugs.alpinelinux.org/issues/5478 ?

@devurandom - I am revising the xpra 0.16.3 patch in Alpine to include the above fixes. I am also adding some more python depends for lz4 gtkglext / rencode.

py-lz4: https://bugs.alpinelinux.org/issues/5480
py-rencode: https://bugs.alpinelinux.org/issues/5481
py-opencl: https://bugs.alpinelinux.org/issues/5482
py-opengl: https://bugs.alpinelinux.org/issues/5483
py-gtkglext: https://bugs.alpinelinux.org/issues/5484
py-numpy-dev missing dep on py-numpy: https://bugs.alpinelinux.org/issues/5485

totaam · 2016-08-10T03:26:47Z

2016-08-10 03:26:47: antoine changed status from reopened to closed

totaam · 2016-08-10T03:26:47Z

2016-08-10 03:26:47: antoine set resolution to fixed

totaam · 2016-08-10T03:26:47Z

2016-08-10 03:26:47: antoine commented

I think this is all fixed and the backport was in 12476.

Feel free to re-open if I've missed something.

totaam · 2017-07-15T11:05:33Z

2017-07-15 11:05:33: antoine commented

Just a heads up as I got reminded of this ticket when I made some changes to the way some gtk extensions are built, which tested fine on the more bloated distros I have here, but may cause problems elsewhere: r16349, r16350, r16351, r16352, r16353.

totaam closed this as completed Aug 10, 2016

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XkbQueryExtension: symbol not found (musl C) #820

XkbQueryExtension: symbol not found (musl C) #820

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totaam commented Mar 2, 2015

2015-03-02 19:34:16: itoffshore created the issue

totaam commented Mar 3, 2015

2015-03-03 02:31:46: antoine changed owner from antoine to itoffshore

totaam commented Mar 3, 2015

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totaam commented Mar 4, 2015

2015-03-04 14:25:55: itoffshore uploaded file build.log (139.7 KiB)

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2015-03-04 17:00:41: itoffshore uploaded file build2.log (126.6 KiB)

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2015-03-23 22:45:17: itoffshore commented

totaam commented Apr 14, 2015

2015-04-14 16:55:03: antoine changed status from new to closed

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2015-04-14 16:55:03: antoine set resolution to needinfo

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2016-04-22 21:11:39: urzds changed status from closed to reopened

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2016-04-22 21:11:39: urzds removed resolution (was needinfo)

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2015-03-04 14:25:55: itoffshore uploaded file `build.log` (139.7 KiB)

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