make error

[alyeldegwy]

make all-recursive
make[1]: Entering directory '/home/aly/zzz/xserver-xorg-input-synaptics'
Making all in include
make[2]: Entering directory '/home/aly/zzz/xserver-xorg-input-synaptics/include'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/aly/zzz/xserver-xorg-input-synaptics/include'
Making all in src
make[2]: Entering directory '/home/aly/zzz/xserver-xorg-input-synaptics/src'
CC synproto.lo
In file included from /usr/include/string.h:630:0,
from /usr/include/xorg/os.h:53,
from /usr/include/xorg/misc.h:116,
from /usr/include/xorg/xf86str.h:37,
from /usr/include/xorg/xf86.h:44,
from /usr/include/xorg/xf86Xinput.h:54,
from synproto.h:36,
from synproto.c:24:
/usr/include/xorg/os.h:590:1: error: expected identifier or ‘(’ before ‘extension’
strndup(const char str, size_t n);
^
Makefile:515: recipe for target 'synproto.lo' failed
make[2]: ** [synproto.lo] Error 1
make[2]: Leaving directory '/home/aly/zzz/xserver-xorg-input-synaptics/src'
Makefile:511: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/aly/zzz/xserver-xorg-input-synaptics'
Makefile:420: recipe for target 'all' failed
make: *** [all] Error 2