2.4.0-prerelease-ac5 : 'make dep' error

[Frank Davis]

Hello,        I received the following make dep error while compiling prerelease-ac5 . Regards, Frank   make -C acpi fastdep make[4]: Entering directory `/usr/src/linux/drivers/acpi' /usr/src/linux/Rules.make:224: *** Recursive variable `CFLAGS' references itself (eventually).  Stop. make[4]: Leaving directory `/usr/src/linux/drivers/acpi' make[3]: *** [_sfdep_acpi] Error 2 make[3]: Leaving directory `/usr/src/linux/drivers' make[2]: *** [fastdep] Error 2 make[2]: Leaving directory `/usr/src/linux/drivers' make[1]: *** [_sfdep_drivers] Error 2 make[1]: Leaving directory `/usr/src/linux' make: *** [dep-files] Error 2