From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Q312461) Description of problem: When using "menuconfig" to configure the kernel, and I enable "APIC support on uniprocessors", without having SMP enabled, when I go to compile (make bzImage), the make errors out with: arch/i386/kernel/kernel.o(.text.init+0x472f): undefined reference to `have_acpi_tables' arch/i386/kernel/kernel.o(.text.init+0x4761): undefined reference to `have_acpi_tables' arch/i386/kernel/kernel.o: In function `get_smp_config': arch/i386/kernel/kernel.o(.text.init+0x498e): undefined reference to `config_acpi_tables' make[1]: *** [kallsyms] Error 1 make[1]: Leaving directory `/usr/src/linux-2.4.9-31' make: *** [vmlinux] Error 2 I'm not too familiar with kernel making, but it LOOKS like that in the SMP section, it's looking for ACPI information, when it SHOULD be looking for APCI. (I don't even have ACPI (Power Management) enabled.) Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: Make menuconfig, set your options up as normal. If you have an SMP machine, turn SMP off (for purpose of this test.) Turn ON the new option "APIC support on uniprocessors". Then compile the kernel as necessary (make dep/clean/bzImage). It should error out. Actual Results: > make[1]: *** [kallsyms] Error 1 > make[1]: Leaving directory `/usr/src/linux-2.4.9-31' > make: *** [vmlinux] Error 2 I dont get a kernel.. If I disable the ACPI, it builds fine. Expected Results: To build the kernel with ACPI support on non SMP machines.. Additional info: Can supply configuration file, and output to make bzImage if necessary. Have NOT tried it with make config or make xconfig, may or may not be present there.