RE: GCJ and JDBC

["Amir Bukhari" <ufz6 at rz dot uni-karlsruhe dot de>]

I have installed a binary from this site:
http://www.thisiscool.com/gcc_mingw.htm

and copied all files to my MinGW installation DIR.

Here is my makefile:

######## BEGIN of Makefile ############
# 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= bin

#	compiler options
COMPILER_OPTIONS=

#	linker options
LINKER_OPTIONS=

#	object list
OBJ=.... a lot of files

#	jar objects
CPOBJ=

#	jar so
CPSO=

#	project classpath 
CP="--classpath=./;"

#	main class (or so output)
MAINCLASS=--main=com.khsitecafe.gui.MySWT

#	binary name (exe or so)
BIN=$(BINOUT)/swtExample

#	library path list
LIBRARYPATH=-L $(BINOUT) 

#	libraries (so) list
LIBRARIES=

#	resource objects list
RESOB=

#	compiler optimization level
OPTLEVEL= -O0

#	compiler debug level
DEBUGLEVEL= -g


#	object targets
%.o:	%.java
	$(GCJ) $(CP)  -c $? -o $@
	
##################
#	dummy targets (depend on config)

#	classpath objects target


#	classpath so target


#	resource objects target



#################

	
#	main target

main: setup $(CPOBJ) $(RESOB) $(OBJ) $(CPSO)
	$(GCJ) $(LINKER_OPTIONS) $(MAINCLASS) $(CPOBJ) $(RESOB) $(OBJ)
-o$(BIN)   $(LIBRARYPATH) $(LIBRARIES)

#	setup output folders
setup:
	mkdir -p $(BINOUT)/resource

#	clean target    
clean:
	rm -f `find . -name "*.o"`
	rm -r $(BINOUT)

######## END of Makefile ############

-----Original Message-----
From: Andrew Haley [mailto:aph@redhat.com] 
Sent: Tuesday, May 17, 2005 3:27 PM
To: Amir Bukhari
Cc: java@gcc.gnu.org
Subject: Re: GCJ and JDBC

Amir Bukhari writes:
 > I have successfully compiled HSQLDB as part of my project (based on SWT).
It
 > run without problem in JVM. But when I run the executable I get
 > SEGV. Here is the trace of the program:
 > 
 > Program received signal SIGSEGV, Segmentation fault.
 > 0x005480b7 in _Jv_CheckAccess(java::lang::Class*, java::lang::Class*,
int)
 > ()
 > (gdb) backtrace 20
 > #0? 0x005480b7 in _Jv_CheckAccess(java::lang::Class*, java::lang::Class*,
 > int)
 > ??? ()
 > #1? 0x0061ad18 in
 > java::lang::reflect::Constructor::newInstance(JArray<java::la??
 > g::Object*>*) ()

This is very weird.  It looks like your libgcj is perhaps missing
debug information -- you should be able to see some arguments for the
method newInstance.

This should work.  Tell us more about how you installed gcj.

Andrew.