how does depmod find dependency

saajii · 09-16-2004, 06:33 AM

hi guys;

i was wondering how does depmod find dependency among modules inorder to create the modules.dep file?

rjlee · 09-16-2004, 07:57 AM

It's not very complicated. Each module exports a list of symbols that it provides (i.e. are defined in the module) and that it requires (i.e. used in the module but not defined there).

depmod just goes through the modules and builds up a tree of these symbols. If a module A exports a symbol that is required by another module B, it will mark A as a dependency of B.

saajii · 09-19-2004, 09:34 PM

the problem i have is,my module uses the crc32_le function in crc32 module which exports this functions for other modules to use.
however when i do a depmod on my module, it returns with unresolved symbol:crc32_le.why does'nt depmod f'nd the dependency and
load the crc32 module automatically?