Hi I'm trying to run the C++ dlopen example from http://www.linux.org/docs/ldp/howto/C++-dlopen/thesolution.html. but I always get the error message "Cannot load library: .libs/libtriangle.so: undefined symbol: _ZTI7Polygon" I see that the compiler renames the >Polygon< class, the >Polygon< class is defined in a header file and included in main-program and plugin-lib. But it seems that the compiler creates different symbol names each time. The compile lines attached below. thx in advance Thomas
-- build of main program -- cd '<cpp-dlopentest>/debug/./src' && WANT_AUTOCONF_2_5="1" WANT_AUTOMAKE_1_6="1" make -j2 cpp_dlopentest if g++ -DHAVE_CONFIG_H -I. -I<cpp-dlopentest>/src -I.. -O0 -g3 -MT cpp_dlopentest.o -MD -MP -MF ".deps/cpp_dlopentest.Tpo" -c -o cpp_dlopentest.o <cpp-dlopentest>/src/cpp_dlopentest.cpp; then mv -f ".deps/cpp_dlopentest.Tpo" ".deps/cpp_dlopentest.Po"; else rm -f ".deps/cpp_dlopentest.Tpo"; exit 1; fi /bin/sh ../libtool --tag=CXX --mode=link g++ -O0 -g3 -o cpp_dlopentest -ldl cpp_dlopentest.o mkdir .libs g++ -O0 -g3 -o cpp_dlopentest cpp_dlopentest.o -ldl -- END -- -- build of libtriangle.so -- cd '<cpp-dlopentest>/debug/./src' && WANT_AUTOCONF_2_5="1" WANT_AUTOMAKE_1_6="1" make -j2 libtriangle.la if /bin/sh ../libtool --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I. -I<cpp-dlopentest>/src -I.. -fPIC -O0 -g3 -MT libtriangle_la-triangle.lo -MD -MP -MF ".deps/libtriangle_la-triangle.Tpo" -c -o libtriangle_la-triangle.lo `test -f 'triangle.cpp' || echo '<cpp-dlopentest>/src/'`triangle.cpp; then mv -f ".deps/libtriangle_la-triangle.Tpo" ".deps/libtriangle_la-triangle.Plo"; else rm -f ".deps/libtriangle_la-triangle.Tpo"; exit 1; fi mkdir .libs g++ -DHAVE_CONFIG_H -I. -I<cpp-dlopentest>/src -I.. -fPIC -O0 -g3 -MT libtriangle_la-triangle.lo -MD -MP -MF .deps/libtriangle_la-triangle.Tpo -c <cpp-dlopentest>/src/triangle.cpp -fPIC -DPIC -o .libs/libtriangle_la-triangle.o <cpp-dlopentest>/src/triangle.cpp:36:2: warning: no newline at end of file g++ -DHAVE_CONFIG_H -I. -I<cpp-dlopentest>/src -I.. -fPIC -O0 -g3 -MT libtriangle_la-triangle.lo -MD -MP -MF .deps/libtriangle_la-triangle.Tpo -c <cpp-dlopentest>/src/triangle.cpp -o libtriangle_la-triangle.o >/dev/null 2>&1 /bin/sh ../libtool --tag=CXX --mode=link g++ -O0 -g3 -o libtriangle.la -rpath /usr/local/lib -module -shared libtriangle_la-triangle.lo g++ -shared -nostdlib /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../lib64/crti.o /usr/lib/gcc/x86_64-linux-gnu/4.1.2/crtbeginS.o .libs/libtriangle_la-triangle.o -L/usr/lib/gcc/x86_64-linux-gnu/4.1.2 -L/usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -lstdc++ -lm -lc -lgcc_s /usr/lib/gcc/x86_64-linux-gnu/4.1.2/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../lib64/crtn.o -Wl,-soname -Wl,libtriangle.so.0 -o .libs/libtriangle.so.0.0.0 (cd .libs && rm -f libtriangle.so.0 && ln -s libtriangle.so.0.0.0 libtriangle.so.0) (cd .libs && rm -f libtriangle.so && ln -s libtriangle.so.0.0.0 libtriangle.so) -- END --- _______________________________________________ help-gplusplus mailing list help-gplusplus@gnu.org http://lists.gnu.org/mailman/listinfo/help-gplusplus
