Undefined references for SWT

Sun Feb 11 17:14:00 GMT 2007

Harpal Grover wrote:
> Okay, I stated in my first post I am using GCJ for MingW GCC/GCJ 4.3
> (gcj-eclipse-merge-branch) on Windows XP, AMD 2.1 GHZ 512 MB
>> What I did not state I guess is I am using gcjbuilder, an eclipse
> plugin to automate the build process :p It creates a make file for
> you. So I have included the make file:
>>> # 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)/./gface_0.9.1.jar.o $(BINOUT)/./swt.jar.o
>> #jar so
> CPSO=
>> #project classpath
> CP="--classpath=C:/projects/java/TSCN/Desktop/lib/h2.jar;C:/projects/java/TSCN/Desktop/lib/nebula_grid_ALPHA.jar;C:/projects/java/TSCN/Desktop/lib/ktable_2.1.3.jar;gface_0.9.1.jar;C:/thisiscool-gcc/swt/win32/3218/swt.jar;./;" 
>>> #main class (or so output)
> MAINCLASS=--main=App -fjni
>> #binary name (exe or so)
> BIN=$(BINOUT)/scnlm.exe
>> #library path list
> LIBRARYPATH=-L$(BINOUT)
>> #libraries (so) list
> LIBRARIES=
>> #resource objects list
> RESOB=
>> #compiler optimization level
> OPTLEVEL= -O1
>> #compiler debug level
> DEBUGLEVEL= -g0
>>> #object targets
> %.o: %.java
> $(GCJ) $(CP) -c $? -o $@
>> ##################
> #dummy targets (depend on config)
>> #classpath objects target
> $(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)
>> So, the way this is executed is by the following line in MSYS :
>> $ make
> mkdir -p release/resource

Ok...
> gcj -O1 -g0 -c
> --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;./;" 
> C:/thisiscool-gcc/swt/win32/3218/swt.jar -orelease/swt.jar.o
> --main=App -fjni release/./gface_0.9.1.jar.o release/./swt.jar.o
> App.o -orelease/scnlm.exe -Lrelease

This is one command? I assume these are multiple commands but don't see 
them clearly... Did you set them up yourself manually or does the 
eclipse gcj builder help?
Can you try to compile your app manually? And report what errors happen 
where? Something like:
gcj -c -fjni swt.jar -o swt.jar.o
gcj -s --main=App App.java swt.jar.o -Iswt.jar -o scnlm.exe
I really can't help you with these informations... Maybe someone else can...
Marco
>> Is this more helpful? :)
>>> On 2/11/07, Marco Trudel <mtrudel@gmx.ch> wrote:
>> Harpal Grover wrote:
>> > I think I figured out what may be the swt,
>>>> I don't understand that....
>>>>>> > 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.
>>>> I don't understand tha
>>> >> 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.
>> >> >>
>> >> >
>> >> >
>> >>
>> >>
>> >
>> >
>>>>>>