On 2 March 2011 20:24, kevin diggs wrote: > Hi, > > If a pre-processor macro, say __m68k__ is defined shouldn't it show up > in gcc -v? gcc version is 3.4.6. Are you asking if you should expect to see -D__m68k__ in the commands displayed by gcc -v? No, it's probably defined automatically, or failing that defined by a system header.