On 31/10/12 07:23, John Steele Scott wrote: > This code has quite a few places where __LINE__ is used when building error > messages. The frmat change results in some line numbers changing, and so I still > need to eyeball the diff t ensure that only line numbers are different. > > I tried forcing __LINE__ to be a constant on the command line (with > -D__LINE__=0), but thatfails with '<command-line>: error: "__LINE__" redefined'. You could replace all uses of __LINE__ with LINE, and then use -DLINE=__LINE__ in the normal build, and -DLINE=123 in the comparison one. Note however that in some cases __LINE__ is used to force macro-generated identifiers to be different, so if your code base does that you could end up with symbols defined multiple times when setting it to a constant. Regards
