From wl2776 at gmail.com  Mon Feb  5 10:28:24 2007
From: wl2776 at gmail.com (Vladimir Eremeev)
Date: Mon, 5 Feb 2007 01:28:24 -0800 (PST)
Subject: [Rd] How to customize the list of exported functions in a shared
	library
Message-ID: <8803194.post@talk.nabble.com>


Dear R users,

I am writing binding from C library to R.
I use R 2.4.1, windows XP, and MinGW.

commands

set PKG_CPPFLAGS="-I../sources" "-I." 
set PKG_LIBS="-Lc:/mingw/lib" -lfl -liberty
set DEBUG=T

R CMD SHLIB -d --output=Rsnns.dll  [ list of all C sources]

produce the DLL having all defined functions in the export list.
This doesn't satisfy me, as I would like to hide most of defined functions
and export only a couple of functions from the library and interface
functions which I have written in order to call them from R.

The ../sources directory contains also two compiled libraries, created with
ar. 
If I try to link my DLL with them,  that is

R CMD SHLIB -d --output Rsnns.dll Rsnns.c
-Wl,-Lc:/mingw/lib,-lfl,-L../sources,-lkernel,-lfunc

desired functions from the library are not exported, export list gets only
interface functions in the C file.

And GCC seems to ignore the .def file, which I create.

Thank you.
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[Rd] How to customize the list of exported functions in a shared library
Vladimir Eremeev