Building Processing on Ubuntu

Manindra29

Building Processing on Ubuntu

in Integration and Hardware • 1 year ago

I downloaded Processing's source from the trunk and got it to build on windows 7(jdk 1.7). But when I tried to build it on Ubuntu 11.04 (running on a Virtual Machine, with Windows 7 as host os) with jdk 1.7, javac gave an error.

javac: target release 1.5 conflicts with default source release 1.7

The target was set to jdk 1.5 in build.xml, and it refused to compile at all, unlike on windows. I then changed the target version variable inside all build.xml files of the source folders to 1.7 from 1.5. This got it to build successfully using "ant build". But the processing application inside \build\linux\work doesn't run. When I tried "ant linux-run", I got an IO Exception of file not found:

Exception: Cannot run program "./processing" (in directory "/home/quark/processing-read-only/build/linux/work"): error=2, No such file or directory

Is editing the build.xml files a bad idea? I've set java_home, and also added the ant's bin folder to system path. Could it be the VM? Or do I need to downgrade my jdk? Please help me out.

Replies(9)

monkstone

Re: Building Processing on Ubuntu

1 year ago

I don't know about your particular setup, I regularly build and run with jdk-1.7.0, however I don't mess with with the build files (64 bit Kubuntu 11.10 and aptosid), it is probably a bad idea.

Manindra29

Re: Building Processing on Ubuntu

1 year ago

Thanks for replying monkstone, I think you're right. I shouldn't mess with build files. I'm very new to linux, so I might have messed my java installation too. I've decided to try again from scratch. I've reinstalled Ubuntu 11.04(32 bit) again. Can you please guide me in what way to proceed, in order to build Processing on linux? Can I use the processing-read-only(source) I downloaded on my windows system?

monkstone

Re: Building Processing on Ubuntu

1 year ago

In principle I don't think there should be an issue using svn download from windows, but I think it would be simpler to svn download on linux. I have to make the assumption you really are interested in exploring the latest build. Are there network issues with your linux setup? Otherwise you should stick with version 1.5.1 (lots of stuff is broken in version 2.0).

Manindra29

Re: Building Processing on Ubuntu

1 year ago

Yes, I've been doing some tweaking with the latest source on windows and wanted to test in on linux. There are no network issues with my setup.

I've installed jdk 1.7, java -version confirms it:

java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) Client VM (build 21.0-b17, mixed mode)
I set JAVA_HOME and added the location of bin folder of the jdk to PATH, in environment variables.
I installed ant with sudo apt-get install ant. ant -version confirms it with version 1.8.1

When I built it from the source I'd downloaded before hand, I got this error:

Buildfile: /home/quark/Documents/processing-read-only/build/build.xml

run:

revision-check:

linux-checkos:

subprojects-build:

compile:
[methods] No changes to PApplet API.
[javac] Compiling 15 source files to /home/quark/Documents/processing-read-only/core/bin
[javac] javac: target release 1.5 conflicts with default source release 1.7

BUILD FAILED
/home/quark/Documents/processing-read-only/build/build.xml:45: The following error occurred while executing this line:
/home/quark/Documents/processing-read-only/build/build.xml:90: The following error occurred while executing this line:
/home/quark/Documents/processing-read-only/core/build.xml:19: Compile failed; see the compiler error output for details.

What could be the fix?

monkstone

Re: Re: Building Processing on Ubuntu

1 year ago

The safest fix would probably be to downgrade to a version 1.6.0 jdk (probably 1.6.0_29).

Personally I never bother to set JAVA_HOME, that seems to be something of a relic and perhaps only required by eclipse (I use Netbeans). I do get complaint when compiling processing using ant of a source mismatch but it compiles and runs OK.

Other things I do, I don't know whether it will make any difference to you, is to use update-alternatives to create virtual links for java, javac etc . Here is what I get when I call

sudo update-alternatives java

There are 2 choices for the alternative java (providing /usr/bin/java).

Selection Path Priority Status

------------------------------------------------------------

* 0 /opt/jdk1.7.0/bin/java 501 auto mode

1 /opt/jdk1.6.0_26/bin/java 500 manual mode

2 /opt/jdk1.7.0/bin/java 501 manual mode

sudo update-alternatives javac

There are 2 choices for the alternative javac (providing /usr/bin/javac).

Selection Path Priority Status

------------------------------------------------------------

* 0 /opt/jdk1.7.0/bin/javac 1000 auto mode

1 /opt/jdk1.6.0_26/bin/javac 500 manual mode

2 /opt/jdk1.7.0/bin/javac 1000 manual mode

Press enter to keep the current choice[*], or type selection number:

This means that on my system /usr/bin/java and /usr/bin/javac are currently pointing to the jdk1.7.0 version.

This is the recommended way of dealing with alternatives on debian (and hence ubuntu systems).

To create these links:-

sudo update-alternatives --install /usr/bin/java java /opt/jdk1.7.0/bin/java 100

Where 100 is the priority level, if you have more than one alternative installed the highest priority is used unless chosen using the update alternatives --config **** command.

By the way I always install jdk manually, in the past various linux distros made a pigs ear of configuring java, I don't know the situation today but I presume since you installed jdk-1.7.0, you did the same.

Manindra29

Re: Building Processing on Ubuntu

1 year ago

Thanks for replying back..

I downgraded it to JDK 1.6.0_26, from steps provided here .

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quark@ubuntu:~$ java -version
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) Server VM (build 20.1-b02, mixed mode)
quark@ubuntu:~$ javac -version
javac 1.6.0_26
quark@ubuntu:~$ ant -version
Apache Ant version 1.8.1 compiled on October 13 2010

I built it with

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ant build

The build was successful. I had used the unedited build.xml files.

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...(lots of build output)
[unzip] Expanding: /home/quark/processing-read-only/java/reference.zip into /home/quark/processing-read-only/build/linux/work/modes/java
[copy] Copying 1 file to /home/quark/processing-read-only/build/linux/work
BUILD SUCCESSFUL
Total time: 1 minute 8 seconds

When I tried to run the app

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quark@ubuntu:~/processing-read-only/build/linux/work$ ./processing
bash: ./processing: /bin/sh^M: bad interpreter: No such file or directory

I couldn't get to run it from the file explorer either.
I also tried

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ant run

I got this error:

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...(lots of regular build output)
assemble:
[unzip] Expanding: /home/quark/processing-read-only/java/reference.zip into /home/quark/processing-read-only/build/linux/work/modes/java
linux-run:
BUILD FAILED
/home/quark/processing-read-only/build/build.xml:45: The following error occurred while executing this line:
/home/quark/processing-read-only/build/build.xml:484: Execute failed: java.io.IOException: Cannot run program "./processing" (in directory "/home/quark/processing-read-only/build/linux/work"): java.io.IOException: error=2, No such file or directory
...(stack trace part of the error)

I'm stuck badly around here. I've been trying to get to to build from last two days and now I really want to get it done. Is there anything else that I could try? Should I try downloading the code fresh from svn checkout?

monkstone

Re: Re: Building Processing on Ubuntu

1 year ago

I'm not 100% sure whether what the answer is, I always use

ant linux-run

Or ant run from the build folder (ie I never try to build first then run), just doing svn update should clean up the code (or might give clues where there is a problem if there are conflicts)? To clean out old work files

cd processing-read-only/processing/build/linux
rm -Rf work

This is the only warning I get when compiling/running which of course I ignore as the ide runs for me

actually this is obviously not a clean build, so cleaning out old work files doesn't seem to be required.

compile:

[javac] Compiling 3 source files to /home/sid/processing-read-only/processing/java/libraries/opengl/bin

[javac]

[javac] WARNING

[javac]

[javac] The -source switch defaults to 1.7 in JDK 1.7.

[javac] If you specify -target 1.5 you now must also specify -source 1.5.

[javac] Ant will implicitly add -source 1.5 for you. Please change your build file.

[javac] warning: [options] bootstrap class path not set in conjunction with -source 1.5

[javac] 1 warning

Also I'm not building android.

I just looked at your link for downgrading java, and it seems as though you might be relying on ubuntu to do the configure for you (this may be the problem) they possibly don't believe you can use native graphics drivers with linux/java and do some silly emulation, which was always the problem in the past. I now remember why I always do a manual install of java on linux.

Manindra29

Re: Building Processing on Ubuntu

1 year ago

Great news! I FINALLY GOT IT WORKING! I owe you big time dude! :D Had been stuck at this for days!

Here's how it finally worked:

Manually installed jdk 1.6.0_25
Downloaded entire source again using svn checkout.
"ant run" from inside /build

and voila! Processing fired up! \m/

Thanks once again! :)

I think the problem had been that I was using the windows version of the source and maybe I'd built it once and then copied it over to linux.

Manindra29

Re: Building Processing on Ubuntu

1 year ago

Update:

After creating sym-links and creating the workspace(I'm on Eclipse), when I ran Base.java, I got this error:

Exception in thread "main" java.lang.ExceptionInInitializerError

Caused by: java.awt.HeadlessException

at sun.awt.HeadlessToolkit.getMenuShortcutKeyMask(HeadlessToolkit.java:231)

at processing.app.Base.<clinit>(Base.java:541)

Could not find the main class: processing.app.Base. Program will exit.

Referring to the solution you'd provided in this older post, I went to Window->Preferences, then to Installed JREs under Java option, and added jdk 1.6.0_25. Intially java-6-openjdk was selected.

Base.java now runs fine. :)

Cheers!

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