open call and conflicting headers

[Geert Fannes <geert.fannes@esat.kuleuven.ac.be>]

hello, i want to use the "open" systemcall, but i get conflicting 
headers when i use the header that 'man open' suggests (these are 
<sys/types.h>, <sys/stat.h> and <fcntl.h>):

In file included from GEye.cpp:6:
/usr/include/sys/types.h:61: conflicting types for `typedef __dev_t dev_t'
/usr/include/linux/types.h:14: previous declaration as `typedef 
__kernel_dev_t
  dev_t'
/usr/include/sys/types.h:66: conflicting types for `typedef __gid_t gid_t'
/usr/include/linux/types.h:41: previous declaration as `typedef 
__kernel_gid_t
  gid_t'
/usr/include/sys/types.h:71: conflicting types for `typedef __mode_t mode_t'
/usr/include/linux/types.h:16: previous declaration as `typedef 
__kernel_mode_t
  mode_t'
/usr/include/sys/types.h:76: conflicting types for `typedef __nlink_t 
nlink_t'
/usr/include/linux/types.h:17: previous declaration as `typedef
  __kernel_nlink_t nlink_t'
/usr/include/sys/types.h:81: conflicting types for `typedef __uid_t uid_t'
/usr/include/linux/types.h:40: previous declaration as `typedef 
__kernel_uid_t
  uid_t'

i am not sure where the "/usr/include/linux/types.h" comes from, i use 
gtk2.0 also in this program (and v4l). can anyone help me to determine 
which of the two types.h is deprecated, or how i can solve this problem.

thank you,
geert.

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