Re: Trouble with create_cairo_context

["Mark Tilford" <ralphmerridew gmail com>]

On Tue, Oct 7, 2008 at 10:24 AM, Jonathon Jongsma
<jonathon quotidian org> wrote:
> Mark Tilford wrote:
>>
>> On Sun, Sep 28, 2008 at 7:43 PM, Jonathon Jongsma
>> <jonathon quotidian org> wrote:
>>>
>>> Mark Tilford wrote:
>>>>
>>>> On Sat, Sep 27, 2008 at 1:55 PM, Mark Tilford <ralphmerridew gmail com>
>>>> wrote:
>>>>>
>>>>> Anybody ever figure out what caused this problem?  I can't get the
>>>>> clock example to work:
>>>>>
>>>>> ~/src/gtk/clock$ g++ `pkg-config --cflags --libs gtkmm-2.4`
>>>>> `pkg-config --cflags --libs cairomm-1.0` -g clock.cc main.cc
>>>>> ~/src/gtk/clock$ ./a.out
>>>>> ./a.out: symbol lookup error: ./a.out: undefined symbol:
>>>>> _ZN3Gdk8Drawable20create_cairo_contextEv
>>>>>
>>>> I found a workaround:
>>>> Instead of
>>>> m_cairo_context = widget.get_window()->create_cairo_context();
>>>> Use
>>>> m_cairo_context = Cairo::RefPtr<Cairo::Context>(new
>>>> Cairo::Context(gdk_cairo_create(widget.get_window()->gobj())));
>>>>
>>>> In case anybody else runs into the same problem.
>>>> _______________________________________________
>>>> gtkmm-list mailing list
>>>> gtkmm-list gnome org
>>>> http://mail.gnome.org/mailman/listinfo/gtkmm-list
>>>
>>> You're probably trying to link against a too-old version of gtkmm (?)  I
>>> believe the gdk_cairo_create() function was added in GTK+ 2.6, but it
>>> wasn't
>>> wrapped until the next release of gtkmm (due to the fact that cairomm
>>> wasn't
>>> yet stable in time for gtkmm-2.6)
>>>
>>> * I might not have the version numbers exactly correct, but I know for
>>> sure
>>> that there was a 1-version gap between when cairo support was added to
>>> GTK+
>>> and when it was added to gtkmm.
>>>
>>> --
>>> jonner
>>>
>>
>>
>> Exactly which version do I have / which file do I need to upgrade?
>> (gtkmm numbering has me completely confused.)
>>
>> ii  libgtkmm-2.4-1c2a           1:2.12.5-2                  C++
>> wrappers for GTK+ 2.4 (shared libraries)
>> ii  libgtkmm-2.4-dev            1:2.12.5-2                  C++
>> wrappers for GTK+ 2.4 (development files)
>> ii  libgtkmm-2.4-doc            1:2.12.5-2                  C++
>> wrappers for GTK+ 2.4 (documentation)
>> ii  libcairomm-1.0-1            1.4.2-1                     C++
>> wrappers for Cairo (shared libraries)
>> ii  libcairomm-1.0-dev          1.4.2-1                     C++
>> wrappers for Cairo (development files)
>> ii  libcairomm-1.0-doc          1.4.2-1                     C++
>> wrappers for Cairo (documentation)
>
> Those versions should all be plenty new.  I just double-checked and
> create_cairo_context() was added in gtkmm 2.10 and you have 2.12 (you can be
> more sure about what version you're linking against by running `pkg-config
> --modversion gtkmm-2.4`)
>
> btw, the second pkg-config invocation (the one for cairomm-1.0) is not
> necessary since gtkmm will pull that in automatically.
>
> Also, I just noticed that this error is not occurring at link time, but
> instead at runtime.  that seems very strange... maybe your environment is
> broken and you need to set LD_LIBRARY_PATH or something?

$ echo "($LD_LIBRARY_PATH)"
()

$ ldd clock | grep cairo
	libcairomm-1.0.so.1 => /usr/lib/libcairomm-1.0.so.1 (0xb7829000)
	libpangocairo-1.0.so.0 => /usr/lib/libpangocairo-1.0.so.0 (0xb77b7000)
	libcairo.so.2 => /usr/lib/libcairo.so.2 (0xb7712000)

$ ls -l /usr/lib/*cairo*
-rw-r--r-- 1 root root 617510 2008-06-04 11:45 /usr/lib/libcairo.a
-rw-r--r-- 1 root root    875 2008-06-04 11:45 /usr/lib/libcairo.la
-rw-r--r-- 1 root root 126960 2007-10-23 14:50 /usr/lib/libcairomm-1.0.a
-rw-r--r-- 1 root root    924 2007-10-23 14:50 /usr/lib/libcairomm-1.0.la
lrwxrwxrwx 1 root root     23 2008-04-29 05:30
/usr/lib/libcairomm-1.0.so -> libcairomm-1.0.so.1.1.0
lrwxrwxrwx 1 root root     23 2008-04-29 05:30
/usr/lib/libcairomm-1.0.so.1 -> libcairomm-1.0.so.1.1.0
-rw-r--r-- 1 root root 103332 2007-10-23 14:50 /usr/lib/libcairomm-1.0.so.1.1.0
lrwxrwxrwx 1 root root     18 2008-07-05 21:49 /usr/lib/libcairo.so ->
libcairo.so.2.17.3
lrwxrwxrwx 1 root root     18 2008-07-05 21:49 /usr/lib/libcairo.so.2
-> libcairo.so.2.17.3
-rw-r--r-- 1 root root 396284 2008-06-04 11:45 /usr/lib/libcairo.so.2.17.3
-rw-r--r-- 1 root root  44602 2008-07-09 11:23 /usr/lib/libpangocairo-1.0.a
-rw-r--r-- 1 root root    846 2008-07-09 11:23 /usr/lib/libpangocairo-1.0.la
lrwxrwxrwx 1 root root     29 2008-07-19 22:00
/usr/lib/libpangocairo-1.0.so -> libpangocairo-1.0.so.0.2002.3
lrwxrwxrwx 1 root root     29 2008-07-19 22:00
/usr/lib/libpangocairo-1.0.so.0 -> libpangocairo-1.0.so.0.2002.3
-rw-r--r-- 1 root root  34904 2008-07-09 11:23
/usr/lib/libpangocairo-1.0.so.0.2002.3

$ ldd clock | grep gtkmm
	libgtkmm-2.4.so.1 => /usr/local/lib/libgtkmm-2.4.so.1 (0xb7cac000)

$ ls -l /usr/local/lib/libgtkmm*
lrwxrwxrwx 1 root root       22 2007-11-14 13:02
/usr/local/lib/libgtkmm-2.4.so.1 -> libgtkmm-2.4.so.1.0.29
-rwxr-xr-x 1 root root 12550005 2006-08-06 06:27
/usr/local/lib/libgtkmm-2.4.so.1.0.29

$ locate libgtkmm | grep -v "/usr/share/doc" | grep -v "/var/lib/dpkg"
| xargs ls -lrd
-rw-r--r-- 1 root    root     2130756 2008-02-27 13:04
/var/cache/apt/archives/libgtkmm-2.4-dev_1%3a2.12.5-2_i386.deb
-rw-r--r-- 1 root    root     1107262 2008-02-27 13:04
/var/cache/apt/archives/libgtkmm-2.4-1c2a_1%3a2.12.5-2_i386.deb
-rwxr-xr-x 1 root    root    12550005 2006-08-06 06:27
/usr/local/lib/libgtkmm-2.4.so.1.0.29
lrwxrwxrwx 1 root    root          22 2007-11-14 13:02
/usr/local/lib/libgtkmm-2.4.so.1 -> libgtkmm-2.4.so.1.0.29
-rw-r--r-- 1 root    root     3406504 2008-02-27 12:59
/usr/lib/libgtkmm-2.4.so.1.0.30
lrwxrwxrwx 1 root    root          22 2008-09-27 12:53
/usr/lib/libgtkmm-2.4.so.1 -> libgtkmm-2.4.so.1.0.30
lrwxrwxrwx 1 root    root          22 2008-09-27 12:53
/usr/lib/libgtkmm-2.4.so -> libgtkmm-2.4.so.1.0.30
-rw-r--r-- 1 root    root         823 2008-02-27 12:58 /usr/lib/libgtkmm-2.4.la
-rw-r--r-- 1 root    root     5288526 2008-02-27 12:58 /usr/lib/libgtkmm-2.4.a

$ dpkg-query -S libgtkmm-2.4.so.1.0.29
dpkg: *libgtkmm-2.4.so.1.0.29* not found.
$ dpkg-query -S libgtkmm-2.4.so.1.0.30
libgtkmm-2.4-1c2a: /usr/lib/libgtkmm-2.4.so.1.0.30


So, could having 1.0.29 and 1.0.30 be confusing it?  Can I just delete
the 1.0.29 files, or do I need to do anything else?