Buildroot compilation error

Hello All,

I am using BuildRoot to compile my embedded linux and tool-chain.
After compiling most of the packages and tool-chain I am getting
following error. This occurs when compiling libnl-3.0

make[3]: Entering directory
`/home/sriram/buildroot/buildroot-2011.11/output/build/libnl-3.0/lib'
  CC     route/pktloc.lo

route/pktloc.c: In function ‘read_pktlocs’:
route/pktloc.c:127:34: error: ‘YY_BUF_SIZE’ undeclared (first use in
this function)
route/pktloc.c:127:34: note: each undeclared identifier is reported
only once for each function it appears in
make[3]: *** [route/pktloc.lo] Error 1
make[3]: Leaving directory
`/home/sriram/buildroot/buildroot-2011.11/output/build/libnl-3.0/lib'
make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/sriram/buildroot/buildroot-2011.11/output/build/libnl-3.0/lib'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory
`/home/sriram/buildroot/buildroot-2011.11/output/build/libnl-3.0'
make: *** [/home/sriram/buildroot/buildroot-2011.11/output/build/libnl-3.0/.stamp_built]
Error 2

Can anyone please help me what is going on in compilation. Do I need
to specify sysroot or path to lib.
Thanks in advance for the help.



-- 
Regards,
Sri.