Date: Sat, 24 Nov 2012 14:48:18 -0500 (EST) From: Benjamin Kaduk <kaduk@MIT.EDU> To: Nikos Vassiliadis <nvass@gmx.com> Cc: freebsd-current@FreeBSD.org, Dimitry Andric <dim@FreeBSD.org> Subject: Re: strange buildworld failure Message-ID: <alpine.GSO.1.10.1211241445110.2164@multics.mit.edu> In-Reply-To: <50B0EC5B.1080104@gmx.com> References: <50AF3509.7070402@gmx.com> <CAE-mSO%2BD-KCbJrYrV4c%2BST4Jz0YNRKWnZD6gode2dMGP33=qWA@mail.gmail.com> <50AFED32.5020005@gmx.com> <alpine.GSO.1.10.1211232138030.2164@multics.mit.edu> <50B0B33F.4060802@FreeBSD.org> <50B0EC5B.1080104@gmx.com>
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On Sat, 24 Nov 2012, Nikos Vassiliadis wrote: > On 11/24/2012 1:45 PM, Dimitry Andric wrote: >> On 2012-11-24 03:38, Benjamin Kaduk wrote: >>> >>> Hmm, buildworld is supposed to be parallel-make-safe. >>> Perhaps a full log of the failing buildworld (e.g., with script(1)) could >>> be posted for analysis? >> >> Well, either a full log, or the tail of the log, as long as it contains >> the actual command(s) that failed. Sometimes it can help to search >> backwards with less, or your favorite editor, for the string "error:", >> or if there is no such string, searching for other problem indicators. >> >> Also, copies of make.conf and src.conf are often essential in finding >> the cause of the problem. Many build issues are caused by erroneous >> settings. :) > > By the way, I tried to add some debugging info with the help of make -d A > or -d g2 but the amount of logging was excessive(the build was ran in a tmux > terminal and the tmux process was using more CPU time than the build itself, > so I canceled). What should I use with "make -d" in order to get some basic > debugging? Or is there another way? Most cases I know of where a parallel make fails and a serial make succeeds are due to incomplete specification of dependencies. This can usually be chased down with just a build log, without extra debugging information. I have only needed to resort to the make debugging outputs when doing more interesting things like custom suffix rules or using the SRCS+OBJS magic provided by the system makefiles in unusual ways. -Ben Kaduk
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