From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from localhost (localhost [127.0.0.1]) by olra.theworths.org (Postfix) with ESMTP id 6AE89431FAF for ; Wed, 11 Apr 2012 11:47:38 -0700 (PDT) X-Virus-Scanned: Debian amavisd-new at olra.theworths.org X-Spam-Flag: NO X-Spam-Score: 0 X-Spam-Level: X-Spam-Status: No, score=0 tagged_above=-999 required=5 tests=[none] autolearn=disabled Received: from olra.theworths.org ([127.0.0.1]) by localhost (olra.theworths.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ObFShJJbQywQ for ; Wed, 11 Apr 2012 11:47:37 -0700 (PDT) Received: from guru.guru-group.fi (guru-group.fi [87.108.86.66]) by olra.theworths.org (Postfix) with ESMTP id 31974431FAE for ; Wed, 11 Apr 2012 11:47:37 -0700 (PDT) Received: by guru.guru-group.fi (Postfix, from userid 501) id B744F68055; Wed, 11 Apr 2012 21:47:32 +0300 (EEST) From: Tomi Ollila To: Vladimir Marek , Notmuch Mail Subject: Re: [PATCH 1/4] Make configure use /bin/bash instead of /bin/sh In-Reply-To: <20120411084342.GL10554@pub.czech.sun.com> References: <1333966665-10469-1-git-send-email-Vladimir.Marek@oracle.com> <1333966665-10469-2-git-send-email-Vladimir.Marek@oracle.com> <20120409121930.GA10554@pub.czech.sun.com> <20120411084342.GL10554@pub.czech.sun.com>User-Agent: Notmuch/0.12+77~gee11800 (http://notmuchmail.org) Emacs/23.3.1 (x86_64-unknown-linux-gnu) X-Face: HhBM'cA~ MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-BeenThere: notmuch@notmuchmail.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: "Use and development of the notmuch mail system." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Apr 2012 18:47:38 -0000 On Wed, Apr 11 2012, Vladimir Marek wrote: > Hi, > [ ... ] > >> Does the configure script work if you replace /bin/sh with /bin/ksh >> in your Solaris box > > yes, it does work if executed by /bin/bash or /bin/ksh > > >> If yes, something like the following could be added to the beginning >> of 'configure' >> >> option=option=value >> if test ! x"${option$*=}" = x"value" 2>/dev/null; then >> if test x"${PREVENT_LOOPING-}" = x; then >> PREVENT_LOOPING=true; export PREVENT_LOOPING >> test ! -x /bin/ksh || exec /bin/ksh "$0" "$@" >> test ! -x /bin/bash || exec /bin/bash "$0" "$@" >> fi >> echo "Cannot find compatible shell for '$0'" >&2 >> exit 1 >> fi > > Unfortunately, no. The /bin/sh says "bad substitution" and does not run > the script at all. I also tried > > eval 'echo ${A%%1}'; echo ok > > but that does not run the 'echo ok' and fails also. You're right! I tested this stuff using heirloom-sh from http://heirloom.sourceforge.net/sh.html It is interesting that the shell stops executing when it finds this syntax (instead of contnuing, even without -e) > I can see three possible solutions > > 1) use bash or ksh in the shebang line Cannot do there are systems lacking /bin/bash & /bin/ksh > 2) rewrite the script as I gave the overview Some work todo; case construct can do option key matching to get identical interface and then cut or sed to get just option value. > 3) declare that solaris 10 /bin/sh is not compatible with configure > script > > Frankly even 3) is viable option, one just have to remember to run > 'bash configure'. If everything else would work, I would be happy :) Option 4) use the following heuristics: case ~ in '~') if test x"${PREVENT_LOOPING-}" = x; then PREVENT_LOOPING=true; export PREVENT_LOOPING for x in /bin/ksh /bin/bash /usr/bin/bash do test ! -x "$x" || exec "$x" "$0" "$@" done fi echo "Cannot find compatible shell for '$0'" >&2 exit 1 esac i.e. if tilde expansion is not done guess this shell is not compatible enough Option 5) do substitution check in subshell: ( option=option=value; : ${option$*=} ) 2>/dev/null || { if test x"${PREVENT_LOOPING-}" = x; then PREVENT_LOOPING=true; export PREVENT_LOOPING for x in /bin/ksh /bin/bash /usr/bin/bash do test ! -x "$x" || exec "$x" "$0" "$@" done fi echo "Cannot find compatible shell for '$0'" >&2 exit 1 } > > Thank you > -- > Vlad Tomi