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From: "jim" <jamesmc AT localnet DOT com>
To: <cygwin AT cygwin DOT com>
Subject: little help with dll 
Date: Tue, 21 Oct 2003 11:52:22 -0400
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Hi -

i'm a newbie trying to create a dll for cygwin with gcc mingw for swig so i
can convert c++ into a tcl module.  $LIBS and $LIBPATH are 2 settings that i
dont where/what to specify.

is this quote true also?

"Note that if you build your DLL as a Cygwin-linked DLL, you should really
load it from a Cygwin-linked Tcl/Tk shell as well to avoid certain
problems. If you're using Cygwin b20.x, it already comes with tclsh/wish
etc, and it's a non-issue then."

below is documentation from swig tutorial to help clarify
any input/examples and links you can provide to help me come up with a
solution would be great.

thank you, marvin

Q: How do I create DLLs using Cygwin?
When creating DLLs in Windows there cannot be any unresolved symbols. Thus
all the libraries you need to link against must be specified using the -l
commandline option. Most of the SWIG target languages will need linking
against the language library. In general use:
For C,
$ gcc -c $SRCS
$ gcc -shared $OBJS $LIBPATH $LIBS -o module.dll
For C++
$ c++ -c $SRCS
$ c++ -shared $OBJS $LIBPATH $LIBS -o module.dll
where,
$SRCS: C/C++ sources
$OBJS: compiled .o files
$LIBPATH: Path to language library, e.g. -L/usr/lib/python2.2/config. Use
the path to the .a file in preference to the .dll file.
$LIBS: Language library, e.g. -lpython2.2




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