I am trying to learn how to do module stacking. I have a module named providesexport that exports the symbol "some_exported_symbol" which is a function. In another module called usesexport I call the exported function. The code compiles and runs as expected, however I get the following warning when compiling the module that uses the exported symbol. make[1]: Entering directory `/lib/modules/2.6.10-1.770_FC3/build' CC [M] /home/tony/learnexport/user/user.o LD [M] /home/tony/learnexport/user/usesexport.o Building modules, stage 2. MODPOST *** Warning: "some_exported_symbol" [/home/tony/learnexport/user/usesexport.ko] undefined! CC /home/tony/learnexport/user/usesexport.mod.o LD [M] /home/tony/learnexport/user/usesexport.ko I am developing in my home directory and have a make file for each module that uses the kernel header files from /lib/modules/<kernel version>. What do I need to change to allow the module to resolve the exported symbol from the other kernel module so that I won't get the warning? I like clean builds so that I don't start overlooking _real_ issues, like when I really am missing a symbol that won't be resolved from another module. Thanks! -Tony Example code is available here: http://webpages.charter.net/origin2k/public/learnexport.tar.gz -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
