On 21 March 2013 01:44, B.S.J.W. Stephenson wrote: > Dear sir/madam This is a mailing list, you're not addressing an individual. > 3) Why didn't you acknoledge my last email ? (please send confirmation of > receipt) Who are you asking this question of? It's not usual to acknowledge receipt of an email to a mailing list, do you want every one of hundreds of subscribers to reply? You can check it was received for yourself by looking in the archives at http://gcc.gnu.org/ml/gcc-help/2013-03/ If you didn't receive a reply it's probably because noone knew the answer. I have no idea how to respond to your email, I can't tell what you're asking, what the problem is with GCC, or how the information you provided is in any way relevant to GCC.