FWIW, here's the warnings:
/home/user/widelands/src/ai/defaultai.cc: In member function ‘bool DefaultAI::check_mines(int32_t)’:
/home/user/widelands/src/ai/defaultai.cc:1794: warning: unused variable ‘en_bo’
/home/user/widelands/src/scripting/lua_game.cc: In member function ‘int LuaGame::L_Player::add_objective(lua_State*)’:
/home/user/widelands/src/scripting/lua_game.cc:573: warning: unused variable ‘p’
The warning concerned bld appeared once I had removed en_bo, since it was the only place where it was used.
FWIW, here's the warnings: widelands/ src/ai/ defaultai. cc: In member function ‘bool DefaultAI: :check_ mines(int32_ t)’: widelands/ src/ai/ defaultai. cc:1794: warning: unused variable ‘en_bo’ widelands/ src/scripting/ lua_game. cc: In member function ‘int LuaGame: :L_Player: :add_objective( lua_State* )’: widelands/ src/scripting/ lua_game. cc:573: warning: unused variable ‘p’
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The warning concerned bld appeared once I had removed en_bo, since it was the only place where it was used.