[asterisk-users] dahdi: Unknown symbol kasprintf

[Vieri]

When I compile dahdi I see these warnings:

WARNING: "kasprintf" [dahdi-linux-2.5.0.2/drivers/dahdi/wctdm24xxp/wctdm24xxp.ko] undefined!
WARNING: "kasprintf" [dahdi-linux-2.5.0.2/drivers/dahdi/dahdi.ko] undefined!
 
And "modinfo dahdi" shows that the driver was built for a 2.6.17 kernel,  SMP mod_unload 586 4KSTACKS gcc-4.1

If I "modprobe -a dahdi", I get the following in dmesg:

dahdi: Unknown symbol kasprintf

Could this be a gcc/glibc or kernel headers issue?

Thanks

Vieri