[M3devel] Error in building cm3

[Tony Hosking]

I've just updated m3-sys/cm3 and now get the following error when  
building.  What gives?

--- building in SOLgnu ---

ignoring ../src/m3overrides

"/.gollum/u110/u86/hosking/cm3/m3-sys/cm3/src/m3makefile", line 12:  
quake runtime error: undefined variable: ROOT

--procedure--  -line-  -file---
include_dir        12  /.gollum/u110/u86/hosking/cm3/m3-sys/cm3/src/ 
m3makefile
include_dir        12  /.gollum/u110/u86/hosking/cm3/m3-sys/cm3/src/ 
m3makefile
                     5  /.gollum/u110/u86/hosking/cm3/m3-sys/cm3/ 
SOLgnu/m3make.args

Fatal Error: package build failed

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