shadowm@reicore:~/src/wesnoth$ ./wesnoth -p data/campaigns/Heir_To_The_Throne/scenarios/04_The_Bay_of_Pearls.cfg foo.out
Battle for Wesnoth v1.9.7+svn (50093L)
Started on Sun Jul  3 06:07:05 2011

Automatically found a possible data directory at /home/shadowm/src/wesnoth
added 0 defines.
preprocessing common macros from 'data/core' ...
acquired 1509 'data/core' defines.
preprocessing specified resource: data/campaigns/Heir_To_The_Throne/scenarios/04_The_Bay_of_Pearls.cfg ...
20110703 06:07:05 warning filesystem: Trying to open file with relative path: 'data/campaigns/Heir_To_The_Throne/scenarios/04_The_Bay_of_Pearls.cfg'.
20110703 06:07:05 error config: Macro/file 'BIGMAP_BAY_OF_PEARLS' is missing at data/campaigns/Heir_To_The_Throne/scenarios/04_The_Bay_of_Pearls.cfg:43