Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT sourceware DOT cygnus DOT com Delivered-To: mailing list cygwin AT sourceware DOT cygnus DOT com Message-ID: <389A2B15.C54FA158@WorkTechnologies.com> Date: Thu, 03 Feb 2000 18:27:49 -0700 From: Ben Groeneveld X-Mailer: Mozilla 4.7 [en] (WinNT; I) X-Accept-Language: en MIME-Version: 1.0 To: Jgreenfield AT RSA DOT com, cygwin AT sourceware DOT cygnus DOT com Subject: Timestamps in GNU make aren't checked when relying on VPATH Content-Type: multipart/mixed; boundary="------------3038FFC5504B62786E212C44" --------------3038FFC5504B62786E212C44 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Jason, did you ever get a response to this? I am using this nearly exactly the way you described, i.e., java compiles with -d $(CODEBASE). Timestamps do not seem to be checked. If I change VPATH to GPATH, then recompiles *always* occur. Not what I expected. -- > Timestamps in GNU make aren't checked when relying > on VPATH > > To: "'cygwin AT sourceware DOT cygnus DOT com'" > Subject: Timestamps in GNU make aren't checked when relying on VPATH > From: Jason Greenfield > Date: Wed, 19 May 1999 16:13:38 -0700 > > > > Hi, > > I hope someone can help me with this problem because I'm stumped at this > point. > > I have an automated build system for a java product that makes use of > VPATH heavily. The reason for this is that I need to keep 4 separate > builds of the .class files -- release full version, release partial > version, debug full version, and debug partial version. In other words, > when I build I deposit the .class files in four separate directories. > I set VPATH for each different version to ensure that make can find the > proper .class files for a given build. > > At this point, if a .class file is not found in the current directory or > VPATH, make correctly rebuilds the needed .class files. However, the problem > comes when I update the .java file (edit or touch the file changing the > timestamp). Make never realizes this and says that everything is up-to-date. > This problem takes much of make's usefulness away, as I have to remember > which .class files to delete to have make re-build them. > > I'm not sure if this is a bug with make, with VPATH, or with my > understanding of make (most likely), but I'm hoping someone out there > might have some good advice to resolve this problem. I couldn't find > anything > close in the FAQ and the stuff about VPATH in the mailing list archives > didn't > help any either. > > Thanks in advance, > > -- Jason Greenfield -- Ben Groeneveld @Work Technologies, Inc., 775 Lindsay Blvd., Idaho Falls, ID 83402 Mailto:BenG AT WorkTechnologies DOT com, phone:208.529.2640, fax:208.522.4202 --------------3038FFC5504B62786E212C44 Content-Type: text/html; charset=us-ascii; name="msg00478.html" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="msg00478.html" Content-Base: "http://sourceware.cygnus.com/ml/cygwin /1999-05/msg00478.html" Content-Location: "http://sourceware.cygnus.com/ml/cygwin /1999-05/msg00478.html" Timestamps in GNU make aren't checked when relying on VPATH

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Timestamps in GNU make aren't checked when relying on VPATH

To: "'cygwin AT sourceware DOT cygnus DOT com'" <cygwin AT sourceware DOT cygnus DOT com>
Subject: Timestamps in GNU make aren't checked when relying on VPATH
From: Jason Greenfield <Jgreenfield AT RSA DOT com>
Date: Wed, 19 May 1999 16:13:38 -0700

Hi,

I hope someone can help me with this problem because I'm stumped at this
point.

I have an automated build system for a java product that makes use of
VPATH heavily. The reason for this is that I need to keep 4 separate
builds of the .class files -- release full version, release partial
version, debug full version, and debug partial version. In other words,
when I build I deposit the .class files in four separate directories.
I set VPATH for each different version to ensure that make can find the
proper .class files for a given build.

At this point, if a .class file is not found in the current directory or
VPATH, make correctly rebuilds the needed .class files. However, the problem
comes when I update the .java file (edit or touch the file changing the
timestamp). Make never realizes this and says that everything is up-to-date.
This problem takes much of make's usefulness away, as I have to remember
which .class files to delete to have make re-build them.

I'm not sure if this is a bug with make, with VPATH, or with my
understanding of make (most likely), but I'm hoping someone out there
might have some good advice to resolve this problem. I couldn't find
anything
close in the FAQ and the stuff about VPATH in the mailing list archives
didn't
help any either.

Thanks in advance,

-- Jason Greenfield
Release Engineer
RSA Data Security, Inc.

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