From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,11d39408e66ea211 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-03-20 16:42:04 PST Path: supernews.google.com!sn-xit-03!supernews.com!news-out.usenetserver.com!news-out-sjo.usenetserver.com!europa.netcrusader.net!4.1.16.34!cpk-news-hub1.bbnplanet.com!cambridge1-snf1.gtei.net!news.gtei.net!homer.alpha.net!not-for-mail From: "Randy Brukardt" Newsgroups: comp.lang.ada References: <7wLt6.19470$bL.1855137@news6-win.server.ntlworld.com> Subject: Re: GNAT Question X-Newsreader: Microsoft Outlook Express 4.72.3612.1700 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3719.2500 Message-ID: Date: Tue, 20 Mar 2001 18:39:42 -0600 NNTP-Posting-Host: 156.46.62.124 X-Complaints-To: abuse@alpha.net X-Trace: homer.alpha.net 985135245 156.46.62.124 (Tue, 20 Mar 2001 18:40:45 CST) NNTP-Posting-Date: Tue, 20 Mar 2001 18:40:45 CST Xref: supernews.google.com comp.lang.ada:5949 Date: 2001-03-20T18:39:42-06:00 List-Id: Robert A Duff wrote in message ... >cts@kampong.aedinc.net ((null)) writes: > >> Just curious, does anyone out there know about how many man-years >> it might take to write an Ada compiler? > >If you have people who really know Ada well, and know how to write >compilers, I'd guess about 10 person-years to get something minimal >working (not much optimization, not many optional extras). I would have said double that. Janus/Ada 83 took about 18 person-years, and Ada 95 is a lot larger. Sure, *I* could write an Ada 95 compiler from scratch in less time than that (having done it already), but why would I want to? I'd rather improve the current one. Randy.