fast_data_types.so: undefined symbol: XCreateIC

[wtjcn]

on ubuntu 16.04 , x86-64bit OS, after build, run then error: /kitty-0.5.0$ python3 . Traceback (most recent call last): File "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main "main", mod_spec) File "/usr/lib/python3.5/runpy.py", line 85, in _run_code exec(code, run_globals) File "./main.py", line 14, in from kitty.main import main File "./kitty/main.py", line 13, in from .boss import Boss File "./kitty/boss.py", line 8, in from .config import MINIMUM_FONT_SIZE File "./kitty/config.py", line 14, in from . import fast_data_types as defines ImportError: ./kitty/fast_data_types.so: undefined symbol: XCreateIC

[kovidgoyal]

You are missing the x11 xim library (dont remember what it is called exectly) which is one of the dependencies of glfw. Install it and you should be fine.

[kovidgoyal]

Actually that symbol is in libx11 itself, so you appear to be missing that entirely.

readelf --syms /usr/lib/libX11.so| grep XCreateIC                                                   
   716: 000000000004eed0   339 FUNC    GLOBAL DEFAULT   12 XCreateIC

[wtjcn]

I of cause have libX11.so,and see XCreateIC in it with readelf, and have other program use glfw library, and have input function in such as nanogui(it use glfw), they run without error. I installed uim-xim package, but the error is still there.

[kovidgoyal]

Then I am out of ideas, sorry. You can try using LD_DEBUG to get more information.

[wtjcn]

LD_DEBUG show: 31550: binding file ./kitty/fast_data_types.so [0] to python3 [0]: normal symbol `PyModule_AddObject' 31550: symbol=XCreateIC; lookup in file=python3 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libpthread.so.0 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libc.so.6 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libdl.so.2 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libutil.so.1 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libexpat.so.1 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libz.so.1 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libm.so.6 [0] 31550: symbol=XCreateIC; lookup in file=/lib64/ld-linux-x86-64.so.2 [0] 31550: symbol=XCreateIC; lookup in file=./kitty/fast_data_types.so [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/librt.so.1 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libc.so.6 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libpthread.so.0 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libdl.so.2 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libm.so.6 [0] 31550: symbol=XCreateIC; lookup in file=/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0 [0] 31550: symbol=XCreateIC; lookup in file=/usr/lib/x86_64-linux-gnu/libfontconfig.so.1 [0] 31550: symbol=XCreateIC; lookup in file=/usr/lib/x86_64-linux-gnu/libfreetype.so.6 [0] 31550: symbol=XCreateIC; lookup in file=/usr/local/lib/libharfbuzz.so.0 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libpng12.so.0 [0] 31550: symbol=XCreateIC; lookup in file=/usr/lib/x86_64-linux-gnu/libunistring.so.0 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libz.so.1 [0] 31550: symbol=XCreateIC; lookup in file=/lib64/ld-linux-x86-64.so.2 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libexpat.so.1 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libutil.so.1 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libglib-2.0.so.0 [0] 31550: symbol=XCreateIC; lookup in file=/lib/x86_64-linux-gnu/libpcre.so.3 [0] 31550: ./kitty/fast_data_types.so: error: symbol lookup error: undefined symbol: XCreateIC (fatal)

is this because there is not '-lX11' in setup.py? I add ldflags.append('-lX11') in setup.py, and see gcc use it in last link step, but the error is still there.

[kovidgoyal]

XCreateIC is not used in kitty code anywhere. The only place it is used that I know of is in glfw. Why ld on your system is trying to resolve it when loading fast_data_types.so I have no idea. For instance doing

readelf --syms kitty/fast_data_types.so | grep XCreate

has no matches

[wtjcn]

I have matches: $ readelf --syms fast_data_types.so | grep XCreate 3: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND XCreateIC 14: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND XCreateFontCursor 106: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND XCreateWindow 116: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND XCreateColormap 2030: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND XCreateIC 2046: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND XCreateFontCursor 2194: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND XCreateWindow 2208: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND XCreateColormap

[wtjcn]

I have a warning in the last link step, I don't know if this have some relation with the problem inlined from ‘io_loop’ at /home/wtj/src/kitty-0.5.0/kitty/child-monitor.c:785:13: /usr/include/x86_64-linux-gnu/bits/poll2.h:41:9: warning: call to ‘poll_chk_warn’ declared with attribute warning: poll called with fds buffer too small file nfds entries return poll_chk (fds, nfds, timeout, bos (__fds)); ^

[kovidgoyal]

No it does not. And if you are getting symbol linkages in fast_data_types then some pkg-config file on your system is specifying -lX11 in the libs. Probably glfw or gl.

[wtjcn]

I use 'readelf' test on every fast_data_types-*.c.o , not find any XCreate

[wtjcn]

I fixed it by change setup.py at line 195: ldpaths = pylib + font_libs + glfw_ldflags + libpng + [ '-lunistring','-lX11', '-lXrandr','-lXinerama','-lXxf86vm','-lXcursor' ]

I copy this librarys from glfw example's make file

[kovidgoyal]

That's just weird, there should be absolutely no need to linka gainst X11 libraries, as kitty code does not use anything from X11 libraries.