Re: Custom linking for MinGW gives unwanted dependency on cygwin1.dll

Alain Frisch confirms this as a problem that can be removed with a
slight adjustment to the library search order in FlexDLL.  It will be
solved in the next release of OCaml.

-- Mike

Mike Spivey wrote:
> I'm using the MinGW port of OCaml under Cygwin and trying to build a
> self-contained native windows application that uses lablgtk2.  What I
> find is that linking with 'ocamlc -custom' results in an executable that
> depends on cygwin1.dll.  Further investigation reveals that cygwin1.dll
> is being used for some math functions, and that adding '-ccopt
> -L/lib/mingw' solves the problem.
> 
> For example, in the /examples directory of lablgtk2, try
> 
> 	ocamlc -custom -o about.exe -I ../src lablgtk2.cma about.ml
> 	cygcheck ./about.exe
> 
> and see the dependency on cygwin1.dll.  Then try
> 
> 	ocamlc -custom -o about.exe -I ../src lablgtk2.cma about.ml \
>  		-ccopt -L/lib/mingw
> 	cygcheck ./about.exe
> 
> and the dependency is gone.  It must have something to do with the way
> flexdll searches for libraries; other OCaml programs that don't use GTK
> find the MinGW math library without problem.
> 
> I don't call this a bug, but it is something that it is useful to know
> about.
> 
> Best wishes for 2009,
> 
> -- Mike
> 
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