Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com X-Injected-Via-Gmane: http://gmane.org/ To: cygwin AT cygwin DOT com From: David Abrahams Subject: Cygwin GCC linking Python extensions issue Date: Fri, 23 May 2003 08:20:38 -0400 Lines: 56 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Complaints-To: usenet AT main DOT gmane DOT org User-Agent: Gnus/5.1002 (Gnus v5.10.2) Emacs/21.3.50 (windows-nt) Cancel-Lock: sha1:Cr56vSYLIM02fPaMpcutIoQz+2s= Hi, Recently I've begun to see the following link errors when building some of the Boost.Python test suite extension modules using Cygwin gcc (version 2 or 3, doesn't matter) and Python 2.2.2 release or Python 2.3 debug. This error happens only on some of the extension modules, but all of them use the symbol boost::python::scope::current_scope which is defined in libboost_python.dll. Regardless, even if that's somehow my bug, there's the matter of `__head_boost_python_dll'... Does anyone have an explanation/workaround for this? To reproduce, get the latest Boost CVS and the latest Cygwin installs from any mirror. Go to $BOOST_ROOT/libs/python/test and do bjam -sTOOLS=gcc args.run Thanks, --- g++ -fmessage-length=0 -Wl, --export-all-symbols -Wl, --exclude-symbols, _bss_end__: _bss_start__:_data_end__:_data_start__ -Wl, --out-implib, c:\build\libs\python\test\bin\ args_ext.pyd\gcc\debug-python\runtime-link-dynamic\args_ext.lib -g -shared -o "c:\build\ libs\python\test\bin\args_ext.pyd\gcc\debug-python\runtime-link-dynamic\args_ext.dll" - L"/usr/local/pydebug/lib/python2.3/config" -L"c:/build/libs/python/build/bin/boost_python. dll/gcc/debug-python/runtime-link-dynamic" "c:\build\libs\python\test\bin\args_ext.pyd\ gcc\debug-python\runtime-link-dynamic\args.obj" "c:\build\libs\python\build\bin\ boost_python.dll\gcc\debug-python\runtime-link-dynamic\boost_python.lib" "c:\build\libs\ python\build\bin\boost_python.dll\gcc\debug-python\runtime-link-dynamic\boost_python.lib" -lpython2.3.dll -lboost_python d000000.o(.idata$2+0x0): multiple definition of `__head_boost_python_dll' c:\build\libs\python\build\bin\boost_python.dll\gcc\debug-python\runtime-link-dynamic\ boost_python.lib(d000000.o)(.idata$2+0x0): first defined here d000001.o(.idata$5+0x0): multiple definition of `__imp___ZN5boost6python5scope13current_scope E' c:\build\libs\python\build\bin\boost_python.dll\gcc\debug-python\runtime-link-dynamic\ boost_python.lib(d000716.o)(.idata$5+0x0): first defined here d000001.o(.idata$6+0x0): multiple definition of `__nm___ZN5boost6python5scope13current_scopeE' c:\build\libs\python\build\bin\boost_python.dll\gcc\debug-python\runtime-link-dynamic\ boost_python.lib(d000716.o)(.idata$6+0x0): first defined here d000002.o(.idata$7+0x0): multiple definition of `_boost_python_dll_iname' c:\build\libs\python\build\bin\boost_python.dll\gcc\debug-python\runtime-link-dynamic\ boost_python.lib(d002399.o)(.idata$7+0x0): first defined here Creating library file: c:\build\libs\python\test\bin\args_ext.pyd\gcc\debug-python\runtime- link-dynamic\args_ext.lib Info: resolving boost::python::scope::current_scope by linking to __imp___ZN5boost6python5scope13current_scopeE (auto-import) collect2: ld returned 1 exit status -- Dave Abrahams Boost Consulting www.boost-consulting.com -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/