Re: Undefined references for SWT

[Marco Trudel <mtrudel at gmx dot ch>]

Harpal Grover wrote:
> Here is my makefile, which shows all of the gcj runtime parameters
> (org.eclipse.swt.windgets.Control is in the swt.jar):
>
> # Generated by Eclipse GCJ Builder
> # http://gcjbuilder.sf.net
>
> #global targets
> ALL:    main
> all:    main
>
> #gcj variable
> GCJ=gcj  $(OPTLEVEL) $(DEBUGLEVEL) $(COMPILER_OPTIONS)
>
> #binary output folder
> BINOUT= release
>
> #compiler options
> COMPILER_OPTIONS=
>
> #linker options
> LINKER_OPTIONS=
>
> #object list
> OBJ=App.o
>
> #custom objects
> CUSTOM_OBJ=
>
> #jar objects
> CPOBJ=$(BINOUT)/./nebula_grid_ALPHA.jar.o
> $(BINOUT)/./gface_0.9.1.jar.o $(BINOUT)/./swt.jar.o
>
> #jar so
> CPSO=
>
> #project classpath
> CP="--classpath=C:/projects/java/TSCN/Desktop/lib/h2.jar;C:/projects/java/TSCN/Desktop/lib/nebula_grid_ALPHA.jar;C:/projects/java/TSCN/Desktop/lib/ktable_2.1.3.jar;gface_0.9.1.jar;C:/thisiscool-gcc/swt/win32/3218/swt.jar;./;" 
>
>
> #main class (or so output)
> MAINCLASS=--main=App -fjni

I only see -fjni here for the main compilation.


> #binary name (exe or so)
> BIN=$(BINOUT)/scnlm.exe
>
> #library path list
> LIBRARYPATH=-L$(BINOUT)
>
> #libraries (so) list
> LIBRARIES=
>
> #resource objects list
> RESOB=
>
> #compiler optimization level
> OPTLEVEL= -O3
>
> #compiler debug level
> DEBUGLEVEL= -g0
>
>
> #object targets
> %.o:    %.java
>     $(GCJ) $(CP)  -c $? -o $@

Here -fjni is missing if this compiles swt to an object. But I was too 
lazy to take a close look at this huge (in comparison to some little 
short manual commands which would have been a good alternative) 
makefile. So I might be wrong...


Marco

> ##################
> #dummy targets (depend on config)
>
> #classpath objects target
> $(BINOUT)/./nebula_grid_ALPHA.jar.o
> :C:/projects/java/TSCN/Desktop/lib/nebula_grid_ALPHA.jar
>     $(GCJ) -c $(CP)
> C:/projects/java/TSCN/Desktop/lib/nebula_grid_ALPHA.jar
> -o$(BINOUT)/nebula_grid_ALPHA.jar.o
> $(BINOUT)/./gface_0.9.1.jar.o :gface_0.9.1.jar
>     $(GCJ) -c $(CP) gface_0.9.1.jar -o$(BINOUT)/gface_0.9.1.jar.o
> $(BINOUT)/./swt.jar.o :C:/thisiscool-gcc/swt/win32/3218/swt.jar
>     $(GCJ) -c $(CP) C:/thisiscool-gcc/swt/win32/3218/swt.jar 
> -o$(BINOUT)/swt.jar.o
>
>
> #classpath so target
>
>
> #resource objects target
>
>
>
> #################
>
>     
> #main target
>
> main: setup $(CPOBJ) $(RESOB) $(OBJ) $(CPSO)
>     $(GCJ) $(LINKER_OPTIONS) $(MAINCLASS) $(CPOBJ) $(CUSTOM_OBJ) $(RESOB)
> $(OBJ) -o$(BIN)   $(LIBRARYPATH) $(LIBRARIES) $(CPSO)
>
> #setup output folders
> setup:
>     mkdir -p $(BINOUT)/resource
>
> #clean target
> clean:
>     rm -f `find . -name "*.o"`
>     rm -r $(BINOUT)
>
> On 2/11/07, Andrew Haley <aph@redhat.com> wrote:
> > Harpal Grover writes:
> >  > Hi,
> >  >
> >  > I am using GCJ for MingW  GCC/GCJ 4.3 (gcj-eclipse-merge-branch).
> >  >
> >  > I am getting the following errors when I attempt to compile not only
> >  > my java code, but referenced jars as well:
> >  >
> >  >
> >  >
> >  > org/vafada/swtcalendar/SWTCalendar.o:SWTCalendar.java:(.data+0xc28):
> >  > undefined reference to
> >  > `org::eclipse::swt::widgets::Control::isActive()'
> >  >
> >  > org/vafada/swtcalendar/SWTCalendar.o:SWTCalendar.java:(.data+0xc2c):
> >  > undefined reference to
> >  > `org::eclipse::swt::widgets::Control::isEnabled()'
> >  >
> >  > org/vafada/swtcalendar/SWTCalendar.o:SWTCalendar.java:(.data+0xc30):
> >  > undefined reference to
> >  > `org::eclipse::swt::widgets::Control::isFocusControl()'
> >  >
> >  > org/vafada/swtcalendar/SWTCalendar.o:SWTCalendar.java:(.data+0xc34):
> >  > undefined reference to
> >  > 
> > `org::eclipse::swt::widgets::Control::isFocusAncestor(org::eclipse::swt::widgets::Control*)' 
> >
> >  >
> >  > org/vafada/swtcalendar/SWTCalendar.o:SWTCalendar.java:(.data+0xc38):
> >  > undefined reference to
> >  > `org::eclipse::swt::widgets::Control::isReparentable()'
> >  >
> >  > org/vafada/swtcalendar/SWTCalendar.o:SWTCalendar.java:(.data+0xc3c):
> >  > undefined reference to
> >  > `org::eclipse::swt::widgets::Control::isShowing()'
> >  > I have included the swt.jar that MingW provides in the classpath. I
> >  > have also used the -fjni flag. I must be missing something here. Can
> >  > anyone give me any pointers?
> >
> > You haven't give us enough information.  In which jar is
> > org.eclipse.swt.windgets.Control?  Did you compile it?  What compile
> > args did you use?
> >
> > Andrew.