[CMake] CMake Java Support

[Andreas Schneider]

On Wednesday 12 January 2011 15:32:08 Allen D Byrne wrote:
> Andreas,
> Thanks for providing these files! I have finally been able to progress on
> converting our java product to cmake. I have one suggestion:
> 
> Add to the add_java function the classpath for the target;
> 
>     set(${_TARGET_NAME}_CLASSPATH
> ".${CMAKE_JAVA_INCLUDE_PATH_FINAL}/${_TARGET_NAME}.jar" PARENT_SCOPE)
> 
> I needed this on linux (uses ':' in classpath not ';' ) to do an add_test.
> 
> Also two questions:
> How do I get the jar files into an output folder for build/test (not
> install task)?
> 
> After I build my JNI Library with normal C process how do I connect the
> java JAR  to use the library? I'm not sure how to use INSTALL_JNI_SYMLINK?
> 
> Allen
> 
> > Hello CMake,
> > 
> > my name is Andreas Schneider and I'm working for Red Hat. At the end of
> > last year I've worked on Dogtag PKI [1]. The Dogtag Certificate System
> > [2] is an enterprise-class open source Certificate Authority.
> > 
> > The project is written in serveral different laguages (C, C++ and Java),
> > so I've used CMake as the new build system. To be able to build the java
> > project I needed Java support in CMake. So I've started to write
> > functions to compile java files, find jar files, bundle jar files and
> > generate javadoc.
> > 
> > It should provide everything to build java and jni projects. You find the
> > files here:
> > 
> > http://git.cryptomilk.org/projects/cmake-tools.git/tree/language/java
> > 
> > FindJNI.cmake:
> > 	Find JNI libraries and headers. I think this is the file from CMake
> > 	itself.
> > 
> > FindJava.cmake:
> > 	Find all needed Java tools like javac, javadoc, jar, etc.
> > 
> > UseJava.cmake:
> > 	This file provides all needed function to support creating java
> > 	projects in CMake. Most of the function are documented in detail.
> > 	There is some documentation missing. I will add this soon.
> > 
> > UseJavaClassFilelist.cmake:
> > 	This is needed to find the class files in the build directory. One
> > 	.java file can create multiple .class files. So you have to glob for
> > 	these file. There is support to only look for certain .class files.
> > 
> > UseJavaSymlinks.cmake:
> > 	This is a helper to create symlinks for versioned jar files.
> > 
> > git clone git://git.cryptomilk.org/projects/cmake-tools.git
> > 
> > 
> > It would be nice if this would be included into the CMake distribution,
> > but at the moment there is still documentation missing. I hope that this
> > will help some people to get their Java project built with CMake.
> > 
> > Comments, suggestions and patches are welcome!
> > 
> > Best regards,
> > 
> > 	-- andreas
> > 
> > [1] https://fedorahosted.org/pki/browser/trunk/pki
> > [2] http://pki.fedoraproject.org/wiki/PKI_Main_Page

-- 
Andreas Schneider                   GPG-ID: 8B7EB4B8
Red Hat                               asn at redhat.com
Samba Team                             asn at samba.org