On 14/04/2011, kevin diggs wrote: > Hi, > > Recent compiler versions seem to need these. Are there configurations > where they are not needed? Like would they be needed for C and C++ > only? They're always needed. For a simple recipe to build gc with them: http://advogato.org/person/redi/diary/240.html Or http://advogato.org/person/redi/diary/229.html