Build problem introduced in 2.4.22-pre3 -> 2.4.22-pre3-ac1 (+config+analysis)

Bas Mevissen (bas@basmevissen.nl)
Wed, 9 Jul 2003 23:36:59 +0200


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Hi Alan, all,

The attached .config fails to build on 2.4.22-pre3-ac1, but builds (and
runs) fine on 2.4.22-pre3. The build error (during linkage) is:

(make bzImage)

ld -m elf_i386 -T /usr/src/linux-2.4.22-pre3-ac1/arch/i386/vmlinux.lds -e
stext arch/i386/kernel/head.o arch/i386/kernel/init_task.o init/main.o
init/version.o init/do_mounts.o \
--start-group \
arch/i386/kernel/kernel.o arch/i386/mm/mm.o kernel/kernel.o mm/mm.o
fs/fs.o ipc/ipc.o \
drivers/acpi/acpi.o drivers/cpufreq/cpufreq.o drivers/char/char.o
drivers/block/block.o drivers/misc/misc.o drivers/net/net.o
drivers/char/drm/drm.o
drivers/ide/idedriver.o drivers/cdrom/driver.o drivers/pci/driver.o
drivers/net/pcmcia/pcmcia_net.o drivers/net/wireless/wireless_net.o
drivers/pnp/pnp.o drivers/video/video.o drivers/media/media.o \
net/network.o \
/usr/src/linux-2.4.22-pre3-ac1/arch/i386/lib/lib.a
/usr/src/linux-2.4.22-pre3-ac1/lib/lib.a
/usr/src/linux-2.4.22-pre3-ac1/arch/i386/lib/lib.a \
--end-group \
-o vmlinux
arch/i386/kernel/kernel.o(.text.init+0x7dae): In function
`setup_ioapic_ids_from_mpc':
: undefined reference to `xapic_support'
arch/i386/kernel/kernel.o(.text.init+0x7fe5): In function
`setup_ioapic_ids_from_mpc':
: undefined reference to `xapic_support'
make: *** [vmlinux] Error 1

The symbol xapic_support is defined in arch/i386/kernel/io_apic.c as
"extern unsigned int xapic_support;"
But it is declared nowhere. Note that the symbol is new in -ac1.

this is some unfinished work and not a typo. What probably is missing is some
change to another file that should decare (and set) xapic_support.

Sorry for not being able to submit a patch, but I hope my analyses helps.

Regards,

Bas.
(Dell Inspiron 8500 with 2.4.22-pre3)

(Note: I'm not on the list, so please always CC me)

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