.text will not fit in region iram1_0_seg

Looking at the following merged pull request:

https://github.com/espruino/Espruino/pull/925

My assumption is that we now support SDK 2.0.0. patch 1.

On a fresh environment, I cloned the latest committed Espruino (https://github.com/espruino/Espruino.git) and set the environment variables:

• ESP8266_BOARD=1
  
• FLASH_4MB=1
  
• ESP8266_SDK_ROOT= // Path to SDK 2.0.0 root
  
  

When I try and run a make, it fails at the end with:

... other succesfull output ...
CC /esp8266/Espruino/gen/jswrapper.o
LD espruino_esp8266_partial.o
LD espruino_esp8266_user2.elf
LD espruino_esp8266_user1.elf
/opt/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld: espruino_esp8266_user1.elf section `.text' will not fit in region `iram1_0_seg'
collect2: error: ld returned 1 exit status
Makefile:1947: recipe for target 'espruino_esp8266_user1.elf' failed
make: *** [espruino_esp8266_user1.elf] Error 1
make: *** Waiting for unfinished jobs....
/opt/xtensa-lx106-elf/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld: espruino_esp8266_user2.elf section `.text' will not fit in region `iram1_0_seg'
collect2: error: ld returned 1 exit status
Makefile:1955: recipe for target 'espruino_esp8266_user2.elf' failed
make: *** [espruino_esp8266_user2.elf] Error 1

Can anyone spot what I might be doing wrong?