Not sure what you really mean. If you mean build 2.4 modules for 2.4 on
a machine running 2.6, that's OK as there's no dependency between the
running kernel and the one you're building. However, you should be
careful about two things :
- gcc: it tends to be too recent for 2.4. gcc 4.1 is the highest version
supported.
- modutils: most recent distros only ship module-init-tools without the
old depmod. If you intend to "make modules_install INSTALL_MOD_PATH=..."
then get prepared to see some errors from depmod at the end. The easiest
solution consists in getting a depmod from an old machine an installing
it in /tmp for instance.
Hoping this helps,
Willy
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