R help - May 2001 - gcc.exe: unrecognized option `-shared' encountered (building R on Windows)

Dear All,

I've followed all the instructions in the documentation for building
a Windows Port of R (1.2.2). I have almost managed to get it to
build. but it falls over at the end - when its creating (I think)
the R.dll.

I'm using the MINGW binaries in conjunction with the extracted binaries from
the latest tools.zip archive.

I am running on Windows 2000

Any ideas as to what I may be doing wrong: ?


Output from console on running <make>

gcc  --shared -s -mwindows -o R.dll  R.def R1.a libmain.a libappl.a
libmath.a ga.a gl.a xdr.a em.a dllversion.o -L. -lg2
c -lwsock32 -lcomctl32 -lversion
gcc.exe: unrecognized option `-shared'
ld:R.def: file format not recognized; treating as linker script
ld:R.def:1: parse error
make: *** [R.dll] Error 1


PS: Once I have managed to build R, I would like to embed it in a Java 
application (the R engine that is) - using OMEGAHAT's Java extension. I 
would be very grateful in hearing from anyone who has already done this (or 
something similar), as its not clear to me how to build the shared R library 
(is it any different from the Dll that is built when I ran make in the 
gnuwin32 directory ?)

Thanks in advance for your help.


Regards

Neil

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On Wed, 30 May 2001, Neil Osborne wrote:
> Dear All,
>
> I've followed all the instructions in the documentation for building
It seems you haven't. The recommended compiler (see file INSTALL) does use
--shared.  Also, MkRules does contain a flag HAVE_SHARED which you can
comment out if you have a non-recommended compiler.

You also sent the comments to the maintainers (as documented) _and_ to
R-help (not in the documentation).
> a Windows Port of R (1.2.2). I have almost managed to get it to
> build. but it falls over at the end - when its creating (I think)
> the R.dll.
>
> I'm using the MINGW binaries in conjunction with the extracted binaries
from
> the latest tools.zip archive.
There are lots of sets of Mingw compilers, and you have too ancient a set.

[...]

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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