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From siss...@insession.com
Subject Re: Build Errors (building Derby under Eclipse)
Date Thu, 14 Apr 2005 01:43:15 GMT
sissonj@insession.com wrote on 14/04/2005 10:00:39 AM:

Missed an additional step required between steps i & j in my instructions. 
 See below for details..

> "Jean T. Anderson" <jta@bristowhill.com> wrote on 18/01/2005 06:25:03 
AM:
> 
> > Irum Godil wrote:
> > 
> > >  Hi Andrew,
> > >
> > >  Yes you are right. Eclipse is looking for tools.jar in a different 
> > directory vs. the command line. The program build after I copied 
> > tools.jar in the right place.
> > ...
> > 
> > 
> > Before everyone forgets this problem, I'd like to attempt to summarize 

> > how to build Derby with Eclipse on Windows with information from these 

> > messages from Rajesh and Andrew:
> > 
> > http://mail-archives.apache.org/eyebrowse/ReadMsg?listName=derby-
> > user@db.apache.org&msgNo=519
> > http://mail-archives.apache.org/eyebrowse/ReadMsg?listName=derby-
> > user@db.apache.org&msgNo=547
> > 
> > 1) Setup everything as per the Derby build doc "How to build Derby" 
> > section at http://incubator.apache.org/derby/derby_downloads.html. If 
> > you can build Derby from the command line, you're ready to set up 
> Eclipse.
> > 
> > 2) Derby uses jdk14 and jdk13 for its builds. So using the default 
> > Eclipse building (which uses only one jdk ) may not a good idea.
> > 
> >    un-check the  Preferences for auto building.
> >    Window - Preferences - Workbench - Build automatically
> >    Window - Preferences - Run/Debug - Launching - Build (if required)
> >    before launching
> > 
> > 3) The rest of these instructions assume that you checked out the 
Derby 
> > 10.0 codeline in this subdirectory:
> > 
> >    C:\derby10_0\10.0
> > 
> >    svn co 
> > http://svn.apache.org/repos/asf/incubator/derby/code/branches/10.0/
> > 
> > 4) The Eclipse project workspace is pointed to C:\derby10_0,  if you 
try 
> 
> > creating a project with the same name '10.0' as above Eclipse 
identifies 
> 
> > the all the required subdirectories including the sources and the 
> > classes (will take some time) since the checked out Derby 10.0 has 
same 
> > name.
> > 
> > 5) Setup Eclipse to recognize the 'classes' directory as the output 
> folder.
> > 
> >    Right click on the build.xml (most external)  - Run  -  the first 
> 'Ant
> >    Build' uses the default "buildsource"
> > 
> >    The second  'Ant Build'  gives you the choices of the ant target.
> > 
> > 6) The java executable that runs Ant from Eclipse needs to be able to 
> > find the JDK tools.jar file -- and it might not be able to find it if 
> > Ant is running from a JRE installation.
> > 
> > For the taglet build, Ant tries to pick tools.jar up from the JDK 
> > relative to the setting of the Java system property java.home, to 
avoid 
> > having to make a copy of the JDK's tools.jar to another location. On 
> > most systems, java.home is set to the *jre* directory of the JDK 
> > installation. So, relative to this directory, tools.jar is in 
> > ${java.home}/../lib/tools.jar.
> > 
> > However, if Ant is running from a JRE installation instead of a JDK 
> > installation, this directory will not exist.  If you add the -verbose 
> > property to the Ant command line (inside Eclipse) and capture the 
> > output, the 4th line of the output will give you the location of the 
> > java.home. Once you know the location of java.home, you can copy 
> > tools.jar to where the build expects it to be (${java.home}/../lib).
> 
> Rather than copying the tools.jar file (as discussed in the paragraph 
> above), you can do the following (tested on eclipse 3.1M6):
> 
> a) Right click on the build.xml file.
> b) Select "Run As..." -> "2 Ant Build ..."
> c) Click on the "JRE" tab
> d) Select the "Separate JRE" radio button
> e) Click the "Installed JREs..." button 
> f) Click Add (We are going to add a JRE entry that is actually going to 
> point to the JDK)
> g) In the "JRE name" field, specify something like "JDK1.4.2_06"
> h) In the "JRE home directory " field, specify the JDK directory, e.g. 
> "C:\j2sdk1.4.2_06"
> i) Click OK 

Pull down the list of JREs (on the right of the "Separate JRE" radio 
button) and select the JRE config you just created (the one pointing to 
the JDK).

> j) Click OK 
> h) Click Apply
> 
> Hope it works for others..
> 
> John.
> 
> > 
> > 
> > Corrections? Additions? When we have it "right", I'll add a link to 
the 
> > instructions from the Derby FAQ.
> > 
> > thanks!
> > 
> >  -jean
> > 
> > 
> > 
> 
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