On Thu, Nov 10, 2005 at 02:19:19PM +0100, Julien Claassen wrote:
> In Nov 10 A.D. 2005 Michael Koch scripsit:
>
> > On Thu, Nov 10, 2005 at 02:06:34PM +0100, Julien Claassen wrote:
> > > Hello all!
> > > I wanted to compile a helloworld program with selfcompiled gcc-3.4.3 (see
> > > below for more info). It had linking problems. Compile only works fine.
> > > The program was:
> > > // Begin of Test.java
> > >
> > > import java.lang.*;
> > >
> > > class Test
> > > {
> > > public static void main(String args[])
> > > {
> > > System.out.println("Hello world.\n");
> > > }
> > > };
> > >
> > > // EOF
> > > The gcj call and output was:
> > > gcj Test.java
> > >
> > > /usr/lib/crt1.o: In function `_start':
> > > /usr/lib/crt1.o(.text+0x18): undefined reference to `main'
> > > collect2: ld returned 1 exit status
> > > I tried gcc, which gave some additional info:
> > > gcc Test.java
> >
> > use this:
> >
> > gcj --main=Test Test.java -o test
> Will
> gcj --main=Test -c Test.java
> Then generate code, that can be interpreted with gij?
> Thanks for this solution so far!
No. -c generated native code, -C generates bytecode. gcj is not
commandline compatible to javac.
Cheers,
Michael
> Kindest regards
> Julien
> >
> > That is all well described in the gcj documentation.
> >
> >
> > Cheers,
> > Michael
> > >
> > > /usr/lib/crt1.o: In function `_start':
> > > /usr/lib/crt1.o(.text+0x18): undefined reference to `main'
> > > /tmp/ccq72aMH.o: In function `Test::main(JArray<java::lang::String*>*)':
> > > /tmp/ccq72aMH.o(.text+0x8): undefined reference to `java::lang::System::class$'
> > > /tmp/ccq72aMH.o(.text+0x1b): undefined reference to `_Jv_InitClass'
> > > /tmp/ccq72aMH.o(.text+0x28): undefined reference to `java::lang::System::class$'
> > > /tmp/ccq72aMH.o(.text+0x2d): undefined reference to `_Jv_InitClass'
> > > /tmp/ccq72aMH.o(.text+0x37): undefined reference to `java::lang::System::out'
> > > /tmp/ccq72aMH.o: In function `Test::Test()':
> > > /tmp/ccq72aMH.o(.text+0x5f): undefined reference to `java::lang::Object::Object()'
> > > /tmp/ccq72aMH.o(.data+0x50): undefined reference to `java::lang::Object::finalize()'
> > > /tmp/ccq72aMH.o(.data+0x54): undefined reference to `java::lang::Object::hashCode()'
> > > /tmp/ccq72aMH.o(.data+0x58): undefined reference to `java::lang::Object::equals(java::lang::Object*)'
> > > /tmp/ccq72aMH.o(.data+0x5c): undefined reference to `java::lang::Object::toString()'
> > > /tmp/ccq72aMH.o(.data+0x60): undefined reference to `java::lang::Object::clone()'
> > > /tmp/ccq72aMH.o(.data+0xa0): undefined reference to `vtable for java::lang::Class'
> > > /tmp/ccq72aMH.o(.data+0xb4): undefined reference to `java::lang::Object::class$'
> > > /tmp/ccq72aMH.o(.eh_frame+0x11): undefined reference to `__gcj_personality_v0'
> > > collect2: ld returned 1 exit status
> > > My gcc was compiled with this config:
> > > gcc -v
> > > Reading specs from /usr/local/gcc343/lib/gcc/i686-pc-linux-gnu/3.4.3/specs
> > > Configured with: ../gcc-3.4.3/configure --prefix=/usr/local/gcc343 --enable-threads=posix --enable-__cxa_atexit --enable-version-specific-runtime-libs --enable-languages=c,c++,f77,objc,java --enable-gather-detailed-mem-stats --enable-nls --with-included-gettext --enable-interpreter --enable-libgcj-multifile --with-x --enable-java-awt=xlib
> > > Thread model: posix
> > > gcc version 3.4.3
> > > I've got an i686 athlon (k7) machine with SuSE 8.1 glibc-2.2.5 (the crt1.o
> > > is in that package).
> > > I looked into the crt1.o with nm, here's the small output:
> > > nm /usr/lib/crt1.o
> > >
> > > 00000004 R _IO_stdin_used
> > > 00000000 D __data_start
> > > U __libc_start_main
> > > U _fini
> > > 00000000 R _fp_hw
> > > U _init
> > > 00000000 T _start
> > > 00000000 W data_start
> > > U main
> > > Can anyone help me? Did I forget to install/update something? How about
> > > environment variables anything SPECIAL I need?
> > > Kindest regards and thanks for any help
> > > Julien
> > >
> > > --------
> > > Music was my first love and it will be my last (John Miles)
> > >
> > > ======== FIND MY WEB-PROJECT AT: ========
> > > http://ltsb.sourceforge.net - the Linux TextBased Studio guide
> > >
> >
> > --
> > Escape the Java Trap with GNU Classpath!
> > http://www.gnu.org/philosophy/java-trap.html
> >
> > Join the community at http://planet.classpath.org/
> >
>
> --------
> Music was my first love and it will be my last (John Miles)
>
> ======== FIND MY WEB-PROJECT AT: ========
> http://ltsb.sourceforge.net - the Linux TextBased Studio guide
>
--
Escape the Java Trap with GNU Classpath!
http://www.gnu.org/philosophy/java-trap.html
Join the community at http://planet.classpath.org/
