Hacking iptables 1.3.5 for 2.6.17

[Amin Azez <azez@ufomechanic.net>]

Whats the official way to add extra extensions targets extensions/Makefile?

I generally patch extensions/Makefile to add to PF_EXT_SLIB, like
PF_EXT_SLIB+=new_extension

but then I get complaints about it being listed twice. Is there a neater
way to express extra extensions to the Makefile?

Also;

I don't think this problem is specific to iptables, but general to
building anything against a kernel.

If a kernel is built with the -O=dir option to place build files outside
of the source tree, then version.h, autoconf.h and compile.h are written
to dir/include/linux instead of src/include/linux

This means that
make KERNEL_DIR=src
is not enough, as dir also needs to be in the search path (or dir/include)

Probably it needs to be before KERNEL_DIR in the search path.



Sam