Re: adding an Existing Framework to a JNI library

• Subject: Re: adding an Existing Framework to a JNI library
• From: Ken Hawkins <email@hidden>
• Date: Thu, 29 Apr 2004 15:21:33 -0700

Ken Hawkins wrote:
| i have a Framework that is in Obj C and i would like to load it into a
| JNI library for calling in java. In XCode i created a JNI target
| application and let it default all the settings. i have:
|
| foo.c now that holds the NON java calls that will be implemented. if i
| include bar.Framework it builds fine. trying to include or import any
| files from my framework however causes a spew of errors with @ tokens
| in files like NSObject.h!!!
|
| ...
|
| In file included from
| /System/Library/Frameworks/Foundation.framework/Headers/Foundation.h: 9,
| from
| /Developer/projects/Rosewoodblues/BroadJam/Software/Frameworks/
| BroadjamCD/build/BroadjamCD.framework/Headers/CDRipper.h:12,
| from MacRipperjnilib.c:10:
| /System/Library/Frameworks/Foundation.framework/Headers/
| NSObjCRuntime.h:56: error: syntax error at '@' token
|
| ...
|
| anyone have a sampling of how you can add existing Frameworks and wrap
| them with JNI calls?

Unsurprisingly, all the standard Cocoa headers (NSWhatever.h) use Objective-C syntax. However, if the compiler thinks it's compiling a vanilla C file, all the Objective-Cisms will cause exactly the problems you're seeing.

Try naming the file "MacRipperjnilib.m" (as opposed to ".c"), to tell the compiler that you're including Objective-C code.

Glen Fisher
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