Ant 1.8.1 showing incorrect java version? - ant

I'm running Ant 1.8.1 under Win 7. And my Java version is 1.7_17.
I add the following 2 lines in my build file for diagnosing.
<echo message="java.version = ${ant.java.version}" />
<echo message="java.home = ${java.home}" />
And the result is
[echo] java.version = 1.6
[echo] java.home = C:\Program Files\Java\jre7
Any idea on what's going on?
Is it hardcoded in Ant 1.8.1 that the highest java version it can show is 1.6?

I found this from Ant website. It's hardcoded actually.
ant.java.version the JVM version Ant detected; currently it can hold
the values "1.2", "1.3",
"1.4", "1.5" and "1.6".
After I update my Ant to 1.9.0, the issue is solved.
[echo] java.version = 1.7
[echo] java.home = C:\Program Files\Java\jdk1.7.0_17\jre
It's kind of funny. :)

It looks like you have JAVA_HOME set correctly, but do you have %JAVA_HOME%\bin included in your PATH environment variable ? It looks like you're currently picking up the java.exe from a Java 6 installation.

I think ant.java.version shows the Java version your Ant was built with. The actual version of your java installation is stored in java.version.

Related

log4j.ConfigurationFile configuration in ant build for jetty

We trigger jetty through ant target as below
<target name="jettysh" depends="init">
<exec executable="${JETTY_HOME}/bin/jetty.sh" failonerror="true">
<env key="JAVA_OPTIONS"
value="-server -d64 ${x} ${y} ${z} ${l} -Dsettings.path=${p.path} -Dlog4j.configuration=file:///${dpath}/conf/sample.xml -Djetty.secure.port=${JETTY_SECURE_PORT} -Dapp.dir=${app.dir}"/>
</exec>
</target>
In this we pass -Dlog4j.configuration path in the older log4j 1.X version as we are migrating to newer version we are passing the new configuration -Dlog4j2.configurationFile but the logs are not getting generated .
And also we are not seeing any log files getting generated that means that log configuration itself is not picked
Help is very much appreciated as it is a time bound one.
Jetty Hightide 7.x does not have support for log4j2 at the server level.
Using that ancient EOL version of Jetty, you only have support for log4j2 within your webapps.
That means you have to put the log4j2 jars and it's configuration files in your WAR file.

Keep backward compatibility for Maven assembly plugin from 2.4 to 2.4.1

The project has the following structure:
M
+---A
+---B
| +---B1
| +---B2
|
+---C
+---D
Every folder (M,A,B,B1,B2,C,D) contains a pom.xml file.
The pom.xml file from B1 contains the following lines:
<configuration>
<filters>
<filter>B/B1/PATH_TO_FILE_X</filter>
</filters>
</configuration>
Running
mvn clean install -Px -Dy -X
from the M folder:
using assembly plugin 2.4, everything works fine. It looks for path\M\B\B1\PATH_FO_FILE_X and it exists. (absolute path = project path + specified path)
using assembly plugin 2.4.1 (or 2.5.3), the file is not found. It looks for path\M\B\B1\B\B1\PATH_TO_FILE_X and there is a java.io.FileNotFoundException. (absolute path = submodule path + specified path)
I can manually change every path that cannot be resolved, but it's too risky because some paths can be resolved in a wrong way. If there is B\B1\PATH_TO_ANOTHER_FILE_X in B\B1\ it could cause problems.
Is there a generic method to solve this problem (keeping backward compatibility from 2.4 to 2.4.1)?
Details:
Maven 3.2.1
Java 7
Windows 7
Update:
It seems to be related to maven-filtering 1.2 that was introduced in 2.4.1:
http://maven.40175.n5.nabble.com/Apache-Maven-Assembly-Plugin-Version-2-4-1-Released-td5801647.html
https://jira.codehaus.org/browse/MASSEMBLY-686
https://jira.codehaus.org/browse/MSHARED-161
http://jira.codehaus.org/browse/MWAR-301
http://mail-archives.apache.org/mod_mbox/maven-announce/201211.mbox/%3C1791127681.01353276825400.JavaMail.Dennis#Dennis-Dator%3E
The following line from 2.4:
<mavenFilteringVersion>1.1</mavenFilteringVersion>
was replaced by
<mavenFilteringVersion>1.2</mavenFilteringVersion>
in 2.4.1.

Ant: failed to create task or type runtarget

I am running into the following error when trying to run ant:
Problem: failed to create task or type runtarget
I am building on a mac 10.8.3.
Prior research has suggested that I add ant-contrib-0.3.jar to my ANT_HOME installation directory, which I have done (that had actually gotten rid of another 'failed to create task or type' error)
I used ant-contrib-0.3.jar because research suggested that this jar is mapped to the line:
< taskdef resource="net/sf/antcontrib/antcontrib.properties" />
which is in the build.xml file I am using.
The project builds on windows machines ( I even got it to build using https://code.google.com/p/winant/ ) but am trying to get it built on a mac. I am thus not looking to change the build.xml file.
An example of the run target line is:
<target name="setPASProps" depends="" description="setup the properties">
<property name="systemname" value="PAS"/>
<runtarget target="setSystemProps"/>
</target>
Here is some info from running ant -diagnostics
-------------------------------------------
ANT PROPERTIES
-------------------------------------------
ant.version: Apache Ant(TM) version 1.8.2 compiled on June 20 2012
ant.java.version: 1.7
Is this the Apache Harmony VM? no
Is this the Kaffe VM? no
Is this gij/gcj? no
ant.core.lib: /usr/share/ant/lib/ant.jar
ant.home: /usr/share/ant
-------------------------------------------
ANT_HOME/lib jar listing
-------------------------------------------
ant.home: /usr/share/ant
ant-antlr.jar (5756 bytes)
ant-contrib-0.3.jar (17708 bytes)
ant-jmf.jar (6745 bytes)
ant-junit.jar (102350 bytes)
ant-junit4.jar (7126 bytes)
ant-launcher.jar (12321 bytes)
ant-swing.jar (7563 bytes)
ant-testutil.jar (15198 bytes)
ant.jar (1937098 bytes)
Thanks !
It would be helpful if you posted your build.xml too.
You usually get this error if Ant sees a task, but there's a problem with the definition.
Here's my recommendation:
In your project create a directory antlib/ant-contrib.
Download this zip file. Ant-contrib is a wee bit strange is that there is a separate jar for C compiling and for all of the other Ant tasks. The latest version is 1.0b3. When you unzip this zip file, you will see ant-contrib-1.0b3.jar inside this folder.
Put that ant-contrib-1.0b3.jar inside the antlib/ant-contrib folder.
Now, in your build.xml, use the following <taskdef/>:
<taskdef resource="net/sf/antcontrib/antlib.xml">
<classpath>
<fileset dir="${basedir}/antlib/ant-contrib"/>
</classpath>
</taskdef>
Make sure this is not inside a target. You want this to be executed before any targets are executed.
I like doing the definition this way because the Ant Contrib jar file becomes part of my project, and anyone who needs to run my project will not have to manually install the Ant Contrib jar before they can use my project.
Take a look at your build.xml and see where that <Runtarget> task is being used. I've never used it, and the documentation for this task is so clear and helpful. Actually, I'm not even sure if it works. If you are still having problems, you try to see if you can remove the defined <target/> that contains this task, and see if that gets rid of the issue.
Removed ant-contrib-0.3.jar and added ant-contrib-1.0b3.jar and ant-contrib.jar to my ANT_HOME directory since these are the jars installed with https://code.google.com/p/winant/ (and it was working on windows machines).
This did the trick.

Including SVN head revision number in the manifest.mf

I am creating a WAR file using Ant. When WAR is created it has MANIFEST.MF file with the default content :
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.8.4
Created-By: 1.7.0_07-b10 (Oracle Corporation).
So, when the WAR is created it should also have Build Revision Number/Head revision number of SVN and the MANIFEST.MF in the WAR should look like this:
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.8.4
Created-By: 1.7.0_07-b10 (Oracle Corporation)
Revision: #Head Revision number
I would recommend to use buildnumber-maven-plugin. See this article for more details: http://manifests.jcabi.com/versioning.html
Also, see this post for more details: http://www.yegor256.com/2014/07/03/how-to-read-manifest-mf.html

CruiseControl.net ndk-build on Windows 64bit without Cygwin

Latest Android NDK (version 8) allows to call ndk-build without additional cygwin installed.
My question is: can I plug this into CruiseControl.Net for periodical native build?
I assume that most likely I would need to use Ant as a build method and then add it to ccnet server config.
So the questions are:
How to call ndk-build.cmd from an Ant command
How to configure build.xml file?
I tried several approaches, but all of those failed. Could you give me some clues if it is possible at all?
I ran into the same problem (the CreateProcess failures, etc) when trying to invoke "ndk-build.cmd" directly from build.xml, using CC.net on Windows. I figured out how to get this to work, and so I felt compelled to share my solution.
First, create a 1-line Windows command file as follows (I named it "ndkwrapper.cmd"):
sh ndkwrap.sh %1 %2 %3
Next, create a simple bash shell script as follows (named "ndkwrap.sh"):
#!/usr/bin/sh
# Wrapper around ndk-build script for Windows
#
NDK_PROJECT_PATH=/cygdrive/c/workspace/agnc_android
export NDK_PROJECT_PATH
/cygdrive/c/Android/android-ndk-r8b/ndk-build $1 $2 $3
Of course, your exact paths (for your workspace and NDK directories) may be different, but note, in particular, that "/cygdrive/c" refers to "C:".
One very important step here, after you create the script above, is to convert the line endings from Windows to UNIX. You can do this with a utility called "dos2unix.exe" which is freely available. I don't remember where I got it, but it was part of some open source package of GNU/Linux tools ported to Windows. (Google on "UNIX file utilities for Windows".) If you don't convert the line endings, then sh or bash will have trouble reading the script, and you'll get all kinds of erros about "\r" ...
So, to invoke the equivalent of "ndk-build.cmd clean", for example, you'd type "ndkwrapper.cmd clean" to delete your intermediate and output NDK-related build files, in preparation for a full NDK build.
In your build.xml file for CC.net on Windows, you can invoke the NDK makefile as follows:
<tasks>
<exec>
<executable>cmd.exe</executable>
<baseDirectory>C:\Android</baseDirectory>
<buildArgs>/C ndkwrapper.cmd clean</buildArgs>
</exec>
Hope this helps!
Ben
i observed problems with running ndk-build as an CCNET task as well.
It took me a while, but at the end i noticed, that you have to provide HOST_OS and HOST_ARCH as ndk-build parameters to let it run.
<exec>
<executable>cmd</executable>
<buildArgs>/C ndk-build HOST_OS=windows HOST_ARCH=x86 -B NDK_PROJECT_PATH=[PROJECT] APP_BUILD_SCRIPT=[ANDROIDMKFILE] NDK_APPLICATION_MK=[APPLICATIONMKFILE] NDK_LOG=1</buildArgs>
<buildTimeoutSeconds>120</buildTimeoutSeconds>
</exec>
hope it helps anyone to save time.
Ok I got some progress, I am able to build the jni code via ant or nant but in both cases plugging it to the cc.net server config gives me strane error:
but now CC.net gives me strange errors:
<builderror>
<type>NAnt.Core.BuildException</type>
<message><![CDATA[External Program Failed: G:\\android-ndk-r8b\\ndk-build.cmd (return code was 2)]]></message>
<location>
<filename>G:/MYPath/project.build</filename>
<linenumber>7</linenumber>
<columnnumber>4</columnnumber>
</location>
<stacktrace><![CDATA[ at NAnt.Core.Tasks.ExternalProgramBase.ExecuteTask()
at NAnt.Core.Tasks.ExecTask.ExecuteTask()
at NAnt.Core.Task.Execute()
at NAnt.Core.Target.Execute()
at NAnt.Core.Project.Execute(String targetName, Boolean forceDependencies)
at NAnt.Core.Project.Execute()
at NAnt.Core.Project.Run()]]></stacktrace>
</builderror>
</failure>
<duration>296.40000000000003</duration>
</buildresults>Buildfile: file:///G:/MYPath/project.build
Target framework: Microsoft .NET Framework 4.0
Target(s) specified: build
clean:
[echo] Starting Android ndk CLEAN ...
[exec] Android NDK: Unable to determine HOST_OS from uname -s:
[exec] Android NDK: Please define HOST_OS in your environment.
[exec] process_begin: CreateProcess(NULL, uname -s, ...) failed.
[exec] G:/android-ndk-r8b/build/core/init.mk:131: *** Android NDK: Aborting. . Stop.
BUILD FAILED - 0 non-fatal error(s), 2 warning(s)
My project in cc.net config:
<project>
<name>MY_PROJECT_NAME</name>
<workingDirectory>PATH_TO_MY_PROJECT</workingDirectory>
<tasks>
<nant>
<executable>G:\nant-0.92\bin\Nant.exe</executable>
<baseDirectory>PATH_TO_MY_PROJECT</baseDirectory>
<buildFile>MYPROJECTNAME.build</buildFile>
<buildArgs>build</buildArgs>
<buildTimeoutSeconds>1200</buildTimeoutSeconds>
</nant>
</tasks>
</project>
And my NAnt build file:
<project name="my name" default="build" basedir=".">
<description>My project Build Files.</description>
<target name="clean" description="remove all generated files">
<echo message="Starting Android ndk CLEAN ..."/>
<exec program="G:\\android-ndk-r8b\\ndk-build.cmd" failonerror="true"
basedir="MY PROJECT PATH">
<arg value="clean" />
</exec>
<echo message="Android ndk CLEAN done."/>
</target>
<target name="build" description="remove all generated files" depends="clean">
<echo message="Starting Android ndk BUILD ..."/>
<exec program="G:/android-ndk-r8b/ndk-build.cmd" failonerror="true" />
<echo message="Android ndk BUILD done."/>
</target>
</project>
As I said I can run a Nant.exe for my project and it cleans and build correctly.
It looks like the cc.net tries to run the other ndk-build commend which is used for linux and is missing some commands as uname.
Do you have any idea what cI could be doing wrong ?
The original question is asking about ant builds. This answer is related to a problem in CC.NET and ant and gradle builds are going to be affected in the same way.
We are using gradle and with some custom gradle tasks it is possible to compile the native code of your project as well by calling ndk-build.cmd (from a path that has no spaces in it).
After the gradle file is prepared properly shell initiated gradle builds will work but cc.net initiated builds will fail.
Our CC.NET task is defined as follows:
<exec executable=".\gradlew.bat">
<baseDirectory>$(projSrcDir)</baseDirectory>
<buildArgs>clean assemblePlayRelease assembleProRelease</buildArgs>
<buildTimeoutSeconds>900</buildTimeoutSeconds>
</exec>
The problem is related to a CC.NET bug that causes the shell variable names to be in lower case. Windows shell scripts do not care about the case of shell variable names but because the NDK fires up make variable case becomes an issue. The init.mk make file that is part of the build process relies on shell variable names to identify the host OS type. In particular the shell variable OS. Normally the OS value is defined like this:
OS=Windows_NT
But when the variable is passed to gradle from CC.NET it gets transformed into this:
os=Windows_NT
This causes the detection mechanism in init.mk to fail and tries to execute the unix detection sequence and looks for the Unix uname utility that is not present on Windows resulting in:
Android NDK: Unable to determine HOST_OS from uname -s:
Android NDK: Please define HOST_OS in your environment.
make.exe: Entering directory `D:/CC.NET/svncheckout/pes/src/project/src/main/jni'
make.exe: Leaving directory `D:/CC.NET/svncheckout/pes/src/project/src/main/jni'
And ultimately:
process_begin: CreateProcess(NULL, uname -s, ...) failed.
c:/ndk/build/core/init.mk:160: *** Android NDK: Aborting. . Stop.
FAILURE: Build failed with an exception.
The workaround is less then ideal but it gets the job done. The idea is to edit the ndk-build.cmd and change the case of the passed variables only when we are building from CC.NET.
Simply insert this code after the #echo off line in ndk-build.cmd:
IF DEFINED ccnetproject (
ECHO Applying Environment variable hack for CC.NET.
SET OS2=%os%
SET OS=
REM SET PATH=%path%
SET TEMP2=%temp%
SET TEMP=
)
IF DEFINED ccnetproject (
SET OS=%OS2%
SET OS2=
SET TEMP=%TEMP2%
SET TEMP2=
)
This script first makes temporary copies of values in the lower case OS and TEMP variables. Next it undefines them by clearing their values. An finally the reverse is done.
Two steps are needed because just saying
SET OS=%os%
doesn't do much since scripts are case insensitive. It first locates the OS variable, finds a lower case version and assigns its own value back to itself.
This was tested on CC.NET v1.6.7981.1, gradle v1.1.0 and Android NDK v10 (64bit).

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