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When I compile driver for a wifi module, it works well under kernel 2.6.x, after I upgrade my Ubuntu to 3.8.x, it can not be compiled anymore, the errors are all like this:

    gcc -I/mlan -DLINUX -I/lib/modules/3.8.0-26-generic/build/include -DFPNUM='"62"' -DDEBUG_LEVEL1 -DPROC_DEBUG -DSTA_SUPPORT -DREASSOCIATION -DUAP_SUPPORT -DWIFI_DIRECT_SUPPORT -DMFG_CMD_SUPPORT   -c -o mlanconfig.o mlanconfig.c
    In file included from /usr/include/linux/if.h:22:0,
                     from mlanconfig.h:41,
                     from mlanconfig.c:34:
    /lib/modules/3.8.0-26-generic/build/include/linux/types.h:14:26: error: conflicting types for ‘fd_set’
    In file included from /usr/include/i386-linux-gnu/sys/types.h:219:0,
                     from /usr/include/stdlib.h:314,
                     from mlanconfig.h:37,
                     from mlanconfig.c:34:
    /usr/include/i386-linux-gnu/sys/select.h:75:5: note: previous declaration of ‘fd_set’ was here

The error-compiled modules are apps included in the driver packages, but not the driver itself, so I guess it use the standard C library and the kernel library, which cause the conflicts.

The question is, first, I am confused what is /usr/include/i386-linux-gnu/ for, it doesn't exist under my 2.6.x system. Why there is no conflicts under the 2.6.x system, what has changed between the update.

Also, my system is 32-bit ubuntu 13.04 on a 64-bit arch machine, the $uname -m -p -i output i686 i686 i686, is there anything to do with this?

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There are many important differences between the 2.6.xx kernel and 3.8.0-xx included in Ubuntu 13.04. I am not surprised it won't compile. Let's start at the beginning. What wireless driver do you need? What does this tell us? lspci -nn | grep 0280 also lsusb –  chili555 Jul 15 '13 at 13:09
A Marvell 8782 USB wireless driver, according to its README, it supports up to 2.6.39. lsusb shows: Bus 001 Device 006: ID 1286:2040 Marvell Semiconductor, Inc. –  platinor Jul 16 '13 at 2:23
I can find almost nothing about this device. Are you able to provide a link to the driver? –  chili555 Jul 16 '13 at 12:47
My friend get it from a device provider, but according to its src, it's under the GPL. So maybe I can share it with the following link src –  platinor Jul 16 '13 at 13:19
I'm sorry, I have no further suggestions aside from emailing Marvell to ask for a current driver or instructions. –  chili555 Jul 16 '13 at 14:43
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