Javier Sedano wrote: > /home/jsedano/prj/uc3m/ao/Labs_J/LibAO/testBypass.c:26: undefined > reference to `_testBP_1' > /home/jsedano/prj/uc3m/ao/Labs_J/LibAO/testBypass.c:26: undefined > reference to `___aoAsBypassCall' > jsedano@ender:~/prj/uc3m/ao/Labs_J/LibAO> nm libao-g.a | grep _testBP_1 > jsedano@ender:~/prj/uc3m/ao/Labs_J/LibAO> nm libao-g.a | grep testBP_1 > 00000166 T testBP_1 You're trying to use a library binary that was originally compiled on Linux, aren't you? That can't work, sorry; you need to recompile the library from source on Cygwin. cheers, DaveK -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple