Re: How to build MXE Octave-4.0.0 64 bits with Java support?

[Rafael Monteiro]

Hi again,

I've installed the JDK and did a rebuild. I tried doing that in two different virtual machines: one using --enable-64 and the other using --enable-windows-64. Both builds worked fine and they both have Java support now.

So far everything is working fine, thanks everyone for the support! :)

Perhaps it's a good idea to add that info on the wiki.

Best regards,

Rafael Monteiro

2015-06-07 20:02 GMT-03:00 Tatsuro MATSUOKA <address@hidden>:

----- Original Message -----
>From: Rafael Monteiro 
>To: Philip Nienhuis 
>Cc: address@hidden
>Date: 2015/6/8, Mon 07:37
>Subject: Re: How to build MXE Octave-4.0.0 64 bits with Java support?
>
>
>Philip,
>
>
>Actually it does matter: I wasn't aware of that option! I thought there was only one option to build a 64-bit octave. This "intermediate" option seem to suit my needs perfectly! I'm glad you mentioned that, I'll give it a try, thank you very much! :)
>
>
>As for 64-bit JDK, apparently it's not installed. All I have is 64-bit JRE. This Debian system was installed (on VMware) only to build Octave, so it doesn't have many packages (only the ones suggested on the tutorial).
>
>
>If I run "java -version", this is what I get:
>
>
>$ java -version
>>java version "1.7.0_79"
>>OpenJDK Runtime Environment (IcedTea 2.5.5) (7u79-2.5.5-1~deb8u1)
>>OpenJDK 64-Bit Server VM (build 24.79-b02Java , mixed mode)
>
>
>NOTE: there is no javac installed
>
>
>Regarding the steps:
>
>
>First step:
>=========
>
>I found a stable-octave file under ~/mxe-octave/log. Here are the relevant lines, I guess:
>
>
>configure: WARNING: JAVA_HOME environment variable not initialized.  Auto-detection will proceed but is unreliable.
>>checking for java... /usr/bin/java
>>checking for javac... no
>>checking for jar... no
>>configure: WARNING: No javac compiler or jar executable found.  Octave will not be able to call Java methods.
>...
>  Java home:                   /usr/lib/jvm/java-7-openjdk-amd64
>>  Java JVM path:               
>>  Java CPPFLAGS:               /home/rafael/mxe-octave/usr/x86_64-w64-mingw32/include/java
>>  Java libraries:              
>
>
>Second step:
>==========
>
>I'll install the JDK and try this step. Only one more question: do you recommend a specific JDK version? On Debian, I have this package available: openjdk-7-jdk.
>
>
>Thanks again!
>
>
>Rafael Monteiro
>

Hello

I am not familiar with java compiling but I guess from the above messages.  
The javac is not included in JRE. 
Please install also JDK. JDK, which includes javac, perhaps is required to compile java codes in build process.

Tatsuro