Undefined references for SWT

Sun Feb 11 15:26:00 GMT 2007

I think I figured out what may be the swt, I guess it's because the
the swt.jar wasn't the first jar being compiled in the command, so the
other jar's that relied on the swt library were failing.
Yeah I understand, this may be a bit difficult to read because of all
of the parameters being defined.
All the optimization parameters are being appended to the main line as
required at runtime (This is what it looks like without including the
swt.jar):
mkdir -p release/resource
gcj -O3 -g0 --main=App -fjni release/./gface_0.9.1.jar.o App.o
When I do include the swt.jar to compile to swt.jar.o, the compilation
of the swt.jar seems to take forever, and does not ever compile
(compilation was taken well over 9 hours before I decided to kill the
process)... I really don't know what else to try at this point.
On 2/11/07, Marco Trudel <mtrudel@gmx.ch> wrote:
> 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.
> >>
> >
> >
>>
-- 
Harpal Grover
President
Harpal Grover Consulting Inc