Re: [platform-swt-dev] Compiling of GCJ and SWT under MacOS X

[<cyberdeth@xxxxxxxxxx>]

hmmm well AFAIK only ld has any references to frameworks but some of the 
command line arguments for gcc might have been modified to send the extra cmd 
line parameters through to ld.  
 
Well I know they are different but I was jsut about to try anything just to get a java 
program to compile with gcj and SWT. 
 
As for searching on Apple's Developer's pages, I have not tried that, but I have 
tried Google and I get a lot of references of how to compile a native application 
using gcj and SWT on linux and windows but absolutely none on compiling native 
applications on MacOS X. 
 
I just need one concrete example of how to build a native MacOS X application 
using gcj and SWT. Just one. Someone, somewhere must have done it. 
 
I can't think that I am the first one to struggle with this. 
 
Any help will be appreciated. 
 
Thanks 
 
On Wed Feb  9  7:37 , Greg Watson <gwatson@xxxxxxxx> sent: 
 
>I don't know the exact answer to your question, but here are a few   
>pointers: 
> 
>1. The Apple distributed gcc is modified from the standard version, so   
>the standard gnu version may not work correctly with frameworks, etc. 
> 
>2. jnilib's and dylib's are very different things. See the following   
>URL's for more information: 
> 
>http://developer.apple.com/documentation/Java/Conceptual/  
>Java14Development/Core_APIs/chapter_6_section_4.html 
>http://developer.apple.com/documentation/DeveloperTools/Conceptual/  
>MachORuntime/Overview/chapter_2_section_4.html 
> 
>3. MacOSX has a library management tool called 'libtool'. You probably   
>want to take a look at the man page. 
> 
>Searching for 'java', 'jnilib' and 'dylib' on   
>http://developer.apple.com might provide you with more information. 
> 
>Regards, 
> 
>Greg 
> 
>On Feb 9, 2005, at 1:02 AM, cyberdeth@xxxxxxxxxx> wrote: 
> 
>> Hi. 
>> 
>> I have downloaded gnu gcc 3.4.3 and compiled it with the following   
>> command line 
>> parameters : 
>> 
>> configure --prefix=/usr --enable-languages=c,c++,java,f77,objc 
>> --enable-threads=posix --enable-shared 
>> 
>> make bootstrap 
>> 
>> make install 
>> 
>> Now this compiles everything fine under MacOS X.3 using the gcc   
>> compiler that 
>> comes with the Developer Tools ie. gcc 3.3 
>> 
>> When I compile a Hello World program using gcj, like so : 
>> 
>> gcj Test.java -o Test --classpath   
>> /usr/share/java/libgcjxxx.jar:$CLASSPATH 
>> --main=Test -lgcj 
>> 
>> Then it compiles fine and the output from the program is as expected. 
>> 
>> But. When I try to link against the libswt-carbon-xxxx.jnilib all hell   
>> breaks loose. I 
>> have tried to make a symlink from *.jnilib to *.dylib and even to .a.   
>> When I do a file 
>> on the jnilib it says it's a bundle. 
>> 
>> I have tried to copy the jnilib files 
>> into /System/Library/Frameworks/JavaVM.framework/Libraries and linking   
>> the 
>> program as follows. 
>> 
>> gcj Test.java -o Test --classpath   
>> /usr/share/java/libgcjxxx.jar:$CLASSPATH 
>> --main=Test -lgcj -framework JavaVM 
>> 
>> which fails. 
>> 
>> When I do an ld style 
>> 
>> ld Test.o -o Test -lgcj -framework JavaVM then it gives me an error   
>> that no __main is 
>> found hence the --main=Test option. 
>> 
>> when doing a gcj Test.o -o Test -lgcj libswt-carbon-xxxx.jnilib it   
>> fails as well telling 
>> me that i can't call a static link editor using a dynamic link editor   
>> or something like 
>> this. And this is where I'm struggling with. 
>> 
>> I mean if I link against any other jnilib in the JavaVM framework it   
>> compiles 
>> correctly. Maybe the jnilibs shouldn't be bundles ??? 
>> 
>> 
>> My long winded questions is : 
>> 
>> 1) Is my gcc configuration flags correct ? 
>> 2) How do you compile a program natively using the   
>> swt-carbon-xxxx.jnilib's ? If 
>> you have a MacOS specific example could you please supply me with it. 
>> 
>> I have been struggling with it for over a week now and I'm lost.... 
>> 
>> 
>> PLEASE....... Help me. 
>> 
>> 
>> Francois Hensley 
>> _______________________________________________ 
>> platform-swt-dev mailing list 
>> platform-swt-dev@xxxxxxxxxxx 
>> http://dev.eclipse.org/mailman/listinfo/platform-swt-dev 
>> 
> 
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