#71 configure error: Bluetooth header files not found

[prt3]

./configure ends with:
checking bluetooth/bluetooth.h usability... no
checking bluetooth/bluetooth.h presence... no
checking for bluetooth/bluetooth.h... no
configure: error: Bluetooth header files not found

config.log says:
configure:3708: checking bluetooth/bluetooth.h usability
configure:3720: gcc -c -Wall -O2 conftest.c >&5
conftest.c:55:33: error: bluetooth/bluetooth.h: No such
file or directory

I'm on Fedora Core 4 with kernel-devel installed,
<bluetooth.h> is in the "standard" Fedora location:
/usr/src/kernels/`uname -r`-`uname -p`/include...

I have tried to force it with a CPPFLAGS="-I..." but to
no avail; see attached config.log.

(I have tried older kernels and got the same result.)

Cheers.

[prt3]

config.log resulting of CPPFLAGS="-I..."