[R] gcc.exe: unrecognized option `-shared' encountered (building R on Windows)

Neil Osborne nc_osborne at hotmail.com
Wed May 30 23:04:54 CEST 2001


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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