GCJ and JDBC

Tue May 17 13:51:00 GMT 2005

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.