In article <4e49b196.7050...@gmail.com>,
"precipice.development" <precipice.developm...@gmail.com> wrote:
> ImportError:
> dlopen(/Users/jph/Public/hello.app/Contents/Resources/lib/python2.7/lib-dynloa
> d/_mysql.so,
> 2): Symbol not found: _strnlen
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Referenced from:
> /Users/jph/Public/hello.app/Contents/MacOS/../Frameworks/libmysqlclient_r.16.d
> ylib
>
> Background
> Did a Hello World type test app on Lion. Used py2app to bundle it into
> an OSX app. Works fine. Copied over to a fresh install of Snow Leopard
> 10.6.8 and works fine. Bundle is standalone.
>
> Now, added MySQLdb and made a database connection on Lion - works as
> expected - result returned from simple query. MySQL database is on a
> third machine. Now copied bundle over to Snow Leopard machine (again a
> fresh install) and received the following error:
>
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Traceback (most
> recent call last):
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] File
> "/Users/jph/Public/hello.app/Contents/Resources/__boot__.py", line 57,
> in <module>
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] _run('hello.py')
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] File
> "/Users/jph/Public/hello.app/Contents/Resources/__boot__.py", line 54,
> in _run
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] execfile(path,
> globals(), globals())
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] File
> "/Users/jph/Public/hello.app/Contents/Resources/hello.py", line 9, in
> <module>
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] import MySQLdb
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] File
> "MySQLdb/__init__.pyc", line 19, in <module>
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] ImportError:
> dlopen(/Users/jph/Public/hello.app/Contents/Resources/lib/python2.7/lib-dynloa
> d/_mysql.so,
> 2): Symbol not found: _strnlen
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Referenced from:
> /Users/jph/Public/hello.app/Contents/MacOS/../Frameworks/libmysqlclient_r.16.d
> ylib
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Expected in:
> /usr/lib/libSystem.B.dylib
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] in
> /Users/jph/Public/hello.app/Contents/MacOS/../Frameworks/libmysqlclient_r.16.d
> ylib
> 8/15/11 4:30:09 PM hello[716] hello Error
> 8/15/11 4:30:10 PM com.apple.launchd.peruser.501[102]
> ([0x0-0x2e02e].org.pythonmac.unspecified.hello[716]) Exited with exit
> code: 255
>
> The key line seems to be ImportError:
> dlopen(/Users/jph/Public/hello.app/Contents/Resources/lib/python2.7/lib-dynloa
> d/_mysql.so,
> 2): Symbol not found: _strnlen
> 8/15/11 4:30:08 PM
> [0x0-0x2e02e].org.pythonmac.unspecified.hello[716] Referenced from:
> /Users/jph/Public/hello.app/Contents/MacOS/../Frameworks/libmysqlclient_r.16.d
> ylib
>
> Python on Lion is from MacPorts.
>
> Python 2.7.1 (r271:86832, Jun 16 2011, 16:59:05)
> [GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on
> darwin
> Type "help", "copyright", "credits" or "license" for more information.
>
> /opt/local/bin/python: Mach-O 64-bit executable x86_64
>
> MySQLdb is also from MacPorts
>
> mysql5/mysql/libmysqlclient.16.dylib: Mach-O 64-bit dynamically linked
> shared library x86_64
> mysql5/mysql/libmysqlclient_r.16.dylib: Mach-O 64-bit dynamically linked
> shared library x86_64
> Py2App script
>
> setup.py
> from setuptools import setup
>
> setup(
> app = ['hello.py'],
> options = {
> 'py2app': {
> 'argv_emulation': 0,
> #'plist': {
> #plist'LSPrefersPPC':
> False,
> #},
> 'includes': ['PySide.QtCore',
> 'PySide.QtGui', 'PySide.QtWebKit', 'PySide.QtNetwork', 'MySQLdb'],
> 'site_packages': 1
> }
> },
> data_files = ['copying.txt'],
> setup_requires = ['py2app'],
> )
>
> Does anyone have any ideas of how to correct this.
On 10.7, did you build all of the installed MacPorts MySQL packages with
MACOSX_DEPLOYMENT_TARGET=10.6 and the 10.6 SDK? (I'm not sure how well
that is supported with MacPorts.) It's always dicey building something
on release n (10.7 in this case) and using it on release n-1 (10.6)
unless you use the appropriate SDK and deployment target. It is
generally safe to do the reverse, though: build on 10.6 to deploy on
10.7.
--
Ned Deily,
n...@acm.org
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