------- Comment #3 from manu at gcc dot gnu dot org 2008-08-25 20:41 ------- I think this is a great idea. A good error with a long explanation will save a lot of time for a lot of people. I don't think you even need the configure option to allow it. I cannot see why anyone would need to build in the source directory.
Care to provide a patch? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37210