We are having some difficulty using Xerces C 2.7.0 under cygwin 1.5.24.
We've successfully built
Xerces as a shared library under cygwin. We are using it from a library
called libsbml
(http://sbml.org/software/libsbml). libsbml also successfully builds;
however when we attempt to
compile the examples, we get errors regarding undefined symbols:
gcc -Wall -I//home/jlegato/SOSlibWIn/xerces/include -I../../include
-L//home/jlegato/SOSlibWIn/xerces/lib -L../../src -o convertSBML
convertSBML.c util.c -lxerces-c -l
sbml -lstdc++ -lm
../../src/libsbml.a(SBMLWriter.o): In function
`_ZN11xercesc_2_710XMLDeleterD1Ev':
//home/jlegato/SOSlibWIn/xerces/include/xercesc/util/PlatformUtils.hpp:847:
undefined reference to
`xercesc_2_7::XMLUni::fgXercescDefaultLocale'
//home/jlegato/SOSlibWIn/xerces/include/xercesc/util/PlatformUtils.hpp:847:
undefined reference to
`xercesc_2_7::XMLPlatformUtils::Initialize(char const*, char const*,
xercesc_2
_7::PanicHandler*, xercesc_2_7::MemoryManager*, bool)'
//home/jlegato/SOSlibWIn/xerces/include/xercesc/util/PlatformUtils.hpp:847:
undefined reference to
`xercesc_2_7::XMemory::operator new(unsigned int)'
//home/jlegato/SOSlibWIn/xerces/include/xercesc/util/PlatformUtils.hpp:847:
undefined reference to
`xercesc_2_7::XMemory::operator delete(void*)'
../../src/libsbml.a(SBMLWriter.o): In function
`_ZN10SBMLWriter13writeToStringERK12SBMLDocument':
//home/jlegato/SOSlibWIn/libsbml-2.3.4/src/sbml/SBMLWriter.cpp:224:
undefined reference to
`xercesc_2_7::XMLUni::fgXercescDefaultLocale'
//home/jlegato/SOSlibWIn/libsbml-2.3.4/src/sbml/SBMLWriter.cpp:224:
undefined reference to
`xercesc_2_7::XMLPlatformUtils::Initialize(char const*, char const*,
xercesc_2_7::Pani
cHandler*, xercesc_2_7::MemoryManager*, bool)'
//home/jlegato/SOSlibWIn/libsbml-2.3.4/src/sbml/SBMLWriter.cpp:226:
undefined reference to
`xercesc_2_7::XMemory::operator new(unsigned int)'
//home/jlegato/SOSlibWIn/libsbml-2.3.4/src/sbml/SBMLWriter.cpp:226:
undefined reference to
`xercesc_2_7::XMLPlatformUtils::fgMemoryManager'
//home/jlegato/SOSlibWIn/libsbml-2.3.4/src/sbml/SBMLWriter.cpp:226:
undefined reference to
`xercesc_2_7::MemBufFormatTarget::MemBufFormatTarget(int,
xercesc_2_7::MemoryManager*)
'
I did some reading on the cygwin site and found a section regarding dlls,
that leads me to believe I
need to add the following options when building Xerces under cygwin in
order to resolve symbols when
other libraries link to it:
"However, if you are building a dll as an export library, you will
probably want to use the complete
syntax:
gcc -shared -o cyg${module}.dll \
-Wl,--out-implib=lib${module}.dll.a \
-Wl,--export-all-symbols \
-Wl,--enable-auto-import \
-Wl,--whole-archive ${old_libs} \
-Wl,--no-whole-archive ${dependency_libs}" from
http://cygwin.com/cygwin-ug-net/dll.html
I do not see these options in the Xerces C build setup for Cygwin. Are
they neccessary? If so how do
I go about adding them?
Thanks
John
