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Re: GCJ Error: undefined reference to `InterlockedIncrement@4'
- To: "Gust, Micron" <MGust at rfc dot com>
- Subject: Re: GCJ Error: undefined reference to `InterlockedIncrement@4'
- From: Mumit Khan <khan at NanoTech dot Wisc dot EDU>
- Date: Wed, 09 Feb 2000 10:33:01 -0600
- cc: "Cygwin at Sourceware dot Cygnus dot Com" <cygwin at sourceware dot cygnus dot com>, jb7216 at bristol dot ac dot uk
"Gust, Micron" <MGust@RFC.com> writes:
> I am having problems getting a very simple "Hello World" java class to
> compile with gcj.
>
> When I try to compile the class file it gives me the error message below.
> I've also tried compiling the .java file and I got the same error. Can
> anyone tell me what I'm doing wrong?
>
> FYI: I have installed:
> 1) The full version of Cygwin B20.1
> 2) GCC version 2.95.2 for Cygwin B20.x
> 3) Libgcj for Win32
>
> Error Messages:
> ----------------------------------------------------------------------------
> -----------------
> bash-2.02$ gcj -mno-cygwin --main=Hello -o Hello Hello.class
> /usr/local/lib/libgccgcj.a(_eh.o): In function `eh_context_initialize':
> /usr/local/build/gcc-2.95.2/gcc/../../../src/gcc-2.95.2/gcc/libgcc2.c(.text+
> 0x142): undefined reference to `InterlockedIncrement@4'
> /usr/local/lib/libgccgcj.a(frame.o): In function `init_object_mutex_once':
> /usr/local/build/gcc-2.95.2/gcc/../../../src/gcc-2.95.2/gcc/frame.c(.text+0x
> 4a): undefined reference to `InterlockedIncrement@4'
> collect2: ld returned 1 exit status
> ----------------------------------------------------------------------------
Looks like the gcj specs is incorrect, and not linking in libkernel32.a
which contains the missing symbol.
Make sure you read up on Jon Beniston's web page on libgcj:
Linkname: Libgcj for Win32
URL: http://www.cs.bris.ac.uk/~jb7216/libgcj/
He mentions some problems with the specs, and possibly also with
libkernel32.a, and provides an alternative/fixed one.
Jon, can you elaborate on the problem with libkernel32.a so I can
fix it? Note that there is no GetFileAttributeEx exported by the
kernel interface, but rather GetFileAttributeEx{A,W} for ASCII
and Unicode.
Regards,
Mumit
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