help,c++ kernel link error

[aninggo]

i I download Quark-0.1 http://sarovar.org/projects/quark
i try make the kernel(in FC6,G++ 4.0.1)
but show link error

ld --oformat=binary -N -emain -Ttext 0x7400 -o kernel.bin main.o GDT.o IDT.o Exceptions.o PIC.o PIT.o PortIO.o Bios.o VGA.o Console.o Debug.o Keyboard.o Speaker.o Shutdown.o Delay.o DeviceQueue.o Shell.o Time.o exception.o DMA.o ../lib/libc.o
PIT.o: In function `initTimeArea()':
PIT.cpp:(.text+0x34): undefined reference to `memcpy'

[JamesM]

Did all the files compile correctly? If one didn't (containing memcpy) the symbols in it won't be generated, and you'll get that error.
Alternatively check all files are included in the linker command.

[pcmattman]

'memcpy' must be defined as extern "C".

[aninggo]

ok, make success, thanks JamesM and pcmattman.