[Madwifi-devel] #include error in ieee80211_wireless.c

[Vinod <gee...@ya...>]

Hi All,

This is a sort of newbie question encountered during
some code I was modifying with the madwifi driver.

I wanted to do some modifications to the
net80211/ieee80211_wireless.c file which required
usage of standard C headers like unistd.h and stdio.h.

When I add these headers in the file 
#include <unistd.h>

and run make I get errors saying it can't find these
files. The errors with unistd.h are shown below.

Checking requirements... ok.
Checking kernel configuration... ok.
make -C /lib/modules/2.6.22-14-generic/build
SUBDIRS=/home/vin/Install/madwifi-0.9.3.3 modules
make[1]: Entering directory
`/usr/src/linux-headers-2.6.22-14-generic'
  CC [M] 
/home/vin/Install/madwifi-0.9.3.3/net80211/ieee80211_wireless.o
/home/vin/Install/madwifi-0.9.3.3/net80211/ieee80211_wireless.c:47:20:
error: unistd.h: No such file or directory

Is there any reason I cannot include this file in this
manner? I can see similar #include directives in the
same file. Further the tools directory seems to allow
similar directives with unistd.h

grep unistd.h */*

tools/80211stats.c:#include <unistd.h>
tools/athstats.c:#include <unistd.h>
tools/wlanconfig.c:#include <unistd.h>

So what am I missing? Why is the same directive not
processed in the ieee80211_wireless.c file? 

I am new to working at the driver level and linux in
general and that might be one reason I cannot
understand the above error.

Thanks for your time,

Vinod


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