Thanks to Chuck Wilson: In order for this to work, the --add-stdcall-alias option has to be passed to the linker on the gcc command line. So, referring to http://www.inonit.com/cygwin/jni/helloWorld/c.html, the gcc command line would need to be changed to:
gcc -mno-cygwin -I$jdk/include -I$jdk/include/win32 -Wl,--add-stdcall-alias -shared -o HelloWorld.dll HelloWorld.c I'll update the online version of the tutorial as soon as I can. -- David. David P. Caldwell wrote: > I was having trouble figuring out how to build Java/JNI programs with > Cygwin. There were a number of threads in the mailing list about it, and > some were helpful, but it still took a great deal of slogging. > > After I got it working, I put a tutorial on the web > (http://www.inonit.com/cygwin/) on how to do it. > > If you are an expert on these matters (and don't feel like reading the > tutorial), one question came up. I was unable to link my examples into DLLs > using gcc. (Or, more properly, I was able to link it into a DLL, but the > Java virtual machine would invariably complain that the function it was > looking for did not exist.) I ended up using LCC-Win32. There's some more > information about what occurred (and my cygcheck -s output) at > http://www.inonit.com/cygwin/jni/helloWorld/c.html. I don't have Java installed on this machine so I can't test this myself. But, try the following additional options to gcc: -Wl,--export-all-symbols If that doesn't work, then try again with the above option, but in addition: -Wl,--add-stdcall-alias Does any of that help? --Chuck -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
