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From: "Tim Beuman" <timb AT cdvinc DOT com>
To: "Cygwin AT Cygwin. Com" <cygwin AT cygwin DOT com>
Subject: Error: symbol `_D' is already defined
Date: Thu, 5 Dec 2002 15:39:30 -0800
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Hi,

I am getting the following error when compiling a c++ source:

/d/Temp/ccuwCNBi.s: Assembler messages:
/d/Temp/ccuwCNBi.s:11: Error: symbol `_D' is already defined

The relevant portion of code is (preprocessor output):

#define Void_t    void

typedef struct _dtmethod_s  Dtmethod_t;
typedef Void_t*     (*Dtsearch_f)_ARG_((Dt_t*,Void_t*,int));

/* method to manipulate dictionary structure */
struct _dtmethod_s
{ Dtsearch_f  searchf; /* search function */
  int   type; /* type of operation  */
};

extern "C" {
__attribute__((dllimport)) Dtmethod_t* Dtset;
__attribute__((dllimport)) Dtmethod_t* Dtbag;
}

compiler invocation (using libtool):

c++ -DHAVE_CONFIG_H -I. -O2 -Wall -Wno-unknown-pragmas -Wp,-MD,.deps/$1.pp -
c $1.cpp \
 -DDLL_EXPORT -o .libs/$1.o -E

Removing _DDLL_EXPORT doesn't make a difference.

I know someone else has reported this problem also but there were no
follow-ups:

http://www.geocrawler.com/archives/3/6013/2002/8/0/9468006/

Might be a compiler backend problem. I don't know.

The compiler version should be 3.2.3 (I downloaded and installed this
version today again,  although gcc --version reports:

gcc (GCC) 3.2 20020927 (prerelease)
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

The date of gcc.exe is 11/14/2002.

Tim Beuman


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