add SG_ORIGIN macro that expands to a string  __FILE__":"__LINE__ Note that __LINE__ is a number and can't be directly used in string context, which makes the macro worthwhile. (IMHO :-)
add SG_ORIGIN macro that expands to a string  __FILE__":"__LINE__
Note that __LINE__ is a number and can't be directly used in string
context, which makes the macro worthwhile. (IMHO :-)

slowriot/simgear,slowriot/simgear