Porting FreeRTOS/lwIP/HTTPD for NXP1769 from CodeRed

I'm porting a CodeRed/Eclipse project to Crossworks. I have reused the FreeRTOS/uip project from FreeRTOS.org as the template. Thus we have LP1700_Startup.s and thumb_crt0.s for the start up files. I can upload the project if that is helpful.

Issue 1: 

THUMB Flash Debug/RTOSDemo.elf section `.text.NVIC_SetPriorityGrouping' will not fit in region `UNPLACED_SECTIONS'

First is to do with sections, is UNPLACED_SECTIONS the default?

region `UNPLACED_SECTIONS' overflowed by 140745 bytes

I'm guessing the overflow error is for real, but that can wait until the next round

Issue 2: 

THUMB Flash Debug/main.o: In function `prvManuallyPlaceLargeDataInAHBRAM':

undefined reference to `__top_RamAHB32'
undefined reference to `__top_RamAHB32'

In a CodeRed project this is found in the linker file - what is the Crossworks equivalent?

Issue 3:

THUMB Flash Debug/thumb_crt0.o: In function `__putchar':
undefined reference to `__stack_end__'
undefined reference to `__data_load_start__'
undefined reference to `__data_start__'
undefined reference to `__data_end__'
undefined reference to `__text_load_start__'
undefined reference to `__text_start__'
undefined reference to `__text_end__'
undefined reference to `__fast_load_start__'
undefined reference to `__fast_start__'
undefined reference to `__fast_end__'
undefined reference to `__ctors_load_start__'
undefined reference to `__ctors_start__'
undefined reference to `__ctors_end__'
undefined reference to `__dtors_load_start__'
undefined reference to `__dtors_start__'
undefined reference to `__dtors_end__'
undefined reference to `__rodata_load_start__'
undefined reference to `__rodata_start__'
undefined reference to `__rodata_end__'
undefined reference to `__bss_start__'
undefined reference to `__bss_end__'
undefined reference to `__heap_start__'
undefined reference to `__heap_end__'
THUMB Flash Debug/LPC1700_Startup.o:(.vectors+0x0): undefined reference to `__stack_end__'

This is puzzling as the startup code in thumb_crt0 is identical. Any thoughts?

Many thanks.