http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46986
--- Comment #15 from Anders F Björklund <afb at users dot sourceforge.net> 2011-09-04 18:14:48 UTC --- The whole patch is Darwin-centric, in that it's only applied on Darwin. You are right that it first needs to be conditionalized to go upstream. afaik, $(OTOOL) would be something like "missing-otool" on e.g. Linux ? (just as we now get $(OBJCOPY) set to "missing-objcopy" on Mac OS X...)