[avr-libc-dev] question about setting section sizes for linking

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Hello,
we are building a avr application. We are trying to
build  our application with some home grown makefiles
which were not generated by avr studio. When we get to
the link phase we get the following errors which i
think are due to some error in defining some text
ranges. We are building for the AtMega325.
I dont believe the size is the problem as i have run
avr-size on all the modules and the total is under 27K
bytes. Can anyone point me in the right direction on
how to describe the linker commands?
Thanks SS

vr-gcc -Wl,-section-start=.bootloader=0x7800 adc.o
handheld.o keyboard.o led.o ports.o
zw_serialapi_extended.o sleep.o timers.o uart_hw.o
uart_hw_switch.o ../vwave/car_boot/car_boot.a
../../wave/controller/car_wavelib.a -o car
C:\WinAVR\bin\..\lib\gcc\avr\3.4.6\..\..\..\..\avr\bin\ld.exe:
region text is full (car section .text)
make[1]: *** [../../proj_bin/car.hex] Error 1
make[1]: Leaving directory `C:/ca/dev_gcc/car'
make: *** [ca5500r.hex] Error 2