[Vm-dev] Compiling Newspeak Cog VM on Ubuntu 12.10 64bit
Eliot Miranda
eliot.miranda at gmail.com
Mon Feb 25 17:52:59 UTC 2013
Hi Philip,
yes, those undefined warnings are the things to attack. Things like
warning: undefined reference to `xcb_get_file_descriptor'
/lib32/libpthread.so.0: warning: undefined reference to
`_dl_deallocate_tls at GLIBC_PRIVATE'
/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
warning: undefined reference to `xcb_connect'
I think indicate that both the 32-bit xcb library is wrong or not
installed, and perhaps that the 32-bit C library is wrong
(_dl_deallocate_tls at GLIBC_PRIVATE). Unfortunately how to fix this, e.g. by
installing the right libraries is not something I can help with; I only
have a 32-bit VM to experiment with.
One thing that might get you going is to use vm-display-X11 from my site,
e.g. from
http://www.mirandabanda.org/files/Cog/VM/VM.r2693/nsvmlinux-13.07.2692.tgz.
By the way, why are you compiling your own VM instead of using one from my
site? Sounds interesting!!
Cheers
Eliot
On Mon, Feb 25, 2013 at 7:26 AM, Philipp Tessenow <philipp at tessenow.org>
wrote:
>
> Hi,
>
> I am trying to compile the Newspeak Cog VM on Ubuntu (12.10) 64bit, but
> fate is not on my side ;) I'd higly appreciate any help, so here is my
> story:
>
> The VM seems to compile correctly, but the newly build nsvm binary
> complains about a missing vm-display-X11 plugin.
>
> Using strace, as suggested here
> (
http://forum.world.st/Cannot-load-vm-display-X11-module-after-build-from-latest-SVN-and-VMM-td104726.html
)
> shows, that nsvm actually finds vm-display-X11:
>
> <code>
> ...
>
open("/home/philipp/stud/masterarbeit/build/squeak/nscogbuild/unixbuild/bld/../../../nsvmlinux/lib/nsvm/4.0-/vm-display-X11",
> O_RDONLY|O_CLOEXEC) = 3
> ...
> open("/usr/lib/i386-linux-gnu/libX11.so.6", O_RDONLY|O_CLOEXEC) = 3
> ...
> open("/usr/lib/i386-linux-gnu/libxcb.so.1", O_RDONLY|O_CLOEXEC) = 3
> ...
> open("/usr/lib/i386-linux-gnu/libXau.so.6", O_RDONLY|O_CLOEXEC) = 3
> ...
> open("/usr/lib/i386-linux-gnu/libXdmcp.so.6", O_RDONLY|O_CLOEXEC) = 3
> read(3,
> "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240\16\0\0004\0\0\0"...,
512)
> = 512
> fstat64(3, {st_mode=S_IFREG|0644, st_size=21888, ...}) = 0
> mmap2(NULL, 24692, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
> = 0xfffffffff7198000
> mmap2(0xf719d000, 8192, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4) = 0xfffffffff719d000
> close(3) = 0
> mprotect(0xf719d000, 4096, PROT_READ) = 0
> mprotect(0xf71a1000, 4096, PROT_READ) = 0
> mprotect(0xf71c3000, 4096, PROT_READ) = 0
> mprotect(0xf72f7000, 4096, PROT_READ) = 0
> munmap(0xf72fb000, 108384) = 0
> munmap(0xf71c5000, 1268568) = 0
> munmap(0xf71a3000, 135468) = 0
> munmap(0xf719f000, 12424) = 0
> munmap(0xf7198000, 24692) = 0
>
stat64("/home/philipp/stud/masterarbeit/build/squeak/nscogbuild/unixbuild/bld/../../../nsvmlinux/lib/nsvm/4.0-/vm-display-X11.so",
> 0xffe7562c) = -1 ENOENT (No such file or dir
> ectory)
> ...
> </code>
>
> Unfortunately, after finding vm-display-X11 and loading some additional
> libraries nsvm aborts and continues searching for other vm-disply-X11
> plugins elsewhere.
>
> ldd gives the following output (which seems to be OK for me):
> <code>
> ldd
>
/home/philipp/stud/masterarbeit/build/squeak/nsvmlinux/lib/nsvm/4.0-//vm-display-X11
> linux-gate.so.1 => (0xf77d0000)
> libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0
(0xf776d000)
> libX11.so.6 => /usr/lib/i386-linux-gnu/libX11.so.6 (0xf7637000)
> libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xf748c000)
> /lib/ld-linux.so.2 (0xf77d1000)
> libxcb.so.1 => /usr/lib/i386-linux-gnu/libxcb.so.1 (0xf746a000)
> libdl.so.2 => /lib/i386-linux-gnu/libdl.so.2 (0xf7465000)
> libXau.so.6 => /usr/lib/i386-linux-gnu/libXau.so.6 (0xf7461000)
> libXdmcp.so.6 => /usr/lib/i386-linux-gnu/libXdmcp.so.6
(0xf745a000)
> </code>
>
> Reading the unixbuild/HowToBuild file I found the following:
> <cite>
> Testing an external plugin has completely linked
> -------------------------------
> You may find that an external plugin compiles and links but does not load.
> This is usually because it contans undefined symbols. To find undefined
> symbols, remake the plugin, capturing the link step and then supply
> -Wl,--warn-unresolved-symbols -Wl,--no-allow-shlib-undefined
> when manually repeating the link command
> </cite>
>
> So I tried to link vm-display-X11 again with warnings enabled:
>
> <code>
> gcc -m32 -shared sqUnixX11.lo sqUnixMozilla.lo -ldl -lpthread -lm
> -lnsl -lX11 -lxcb -lpthread -lc -L/usr/lib32
> -Wl,--warn-unresolved-symbols -Wl,--no-allow-shlib-undefined -Wl,-soname
> -Wl,vm-display-X11 -o .libs/vm-display-X11
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_get_file_descriptor'
> /lib32/libpthread.so.0: warning: undefined reference to
> `_dl_deallocate_tls at GLIBC_PRIVATE'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_connect'
> /lib32/libc.so.6: warning: undefined reference to `_dl_argv at GLIBC_PRIVATE'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_generate_id'
> /lib32/libpthread.so.0: warning: undefined reference to
> `_dl_allocate_tls at GLIBC_PRIVATE'
> /lib32/libpthread.so.0: warning: undefined reference to
> `_dl_get_tls_static_info at GLIBC_PRIVATE'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_connect_to_display_with_auth_info'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_writev'
> /lib32/libpthread.so.0: warning: undefined reference to
> `__libc_stack_end at GLIBC_2.1'
> /lib32/libc.so.6: warning: undefined reference to
> `__libc_enable_secure at GLIBC_PRIVATE'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `dlsym at GLIBC_2.0'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `dlopen at GLIBC_2.1'
> /lib32/libpthread.so.0: warning: undefined reference to
> `_dl_make_stack_executable at GLIBC_PRIVATE'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_wait_for_reply'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_poll_for_event'
> /lib32/libpthread.so.0: warning: undefined reference to
> `_dl_allocate_tls_init at GLIBC_PRIVATE'
> /lib32/libpthread.so.0: warning: undefined reference to
> `_rtld_global at GLIBC_PRIVATE'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_get_maximum_request_length'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_poll_for_reply'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_take_socket'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_wait_for_event'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_disconnect'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_connection_has_error'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_get_setup'
> /lib32/libpthread.so.0: warning: undefined reference to
> `___tls_get_addr at GLIBC_2.3'
> /lib32/libpthread.so.0: warning: undefined reference to
> `_rtld_global_ro at GLIBC_PRIVATE'
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../i386-linux-gnu/libX11.so:
> warning: undefined reference to `xcb_parse_display'
> </code>
>
> That is a lot of warnings. For my unexperienced eyes this looks like
> libX11.so cannot find xcb, albeit I installed every x11/xcb library I
> can think of (to name them: libx11-xcb-dev:i386, libx11-xcb1:i386,
> libx11-6:i386, libx11-dev:i386, xcb-proto:i386, xcb:i386, libxcb1:i386,
> libxcb1-dev:i386).
>
> I also tried the above steps on a Ubuntu 12.10 32bit VM with similar
> results. Am I missing something? Do I need a special setup to compile a
> CogVM? Any other ideas?
>
> Thanks,
> Philipp
--
best,
Eliot
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