[R] loading fortran with Redhat 5.1

[Martin Maechler]

Contrary to S[-plus], dyn.load(.) in R  only allows the dynamic loading
of shared libraries.

Insofar, dyn.load(.) maybe should have been called
	 dyn.load.shared()  instead.

>>>>> "J" == J Andy Royle <jar at oriole.er.usgs.gov> writes:

    J> I'm running R 0.63 on Redhat 5.1 and when I attempt to load a
    J> fortran routine I get:

    >> dyn.load("/home/royle/Rstuff/varna.o")

    J> Error in dyn.load(x) : unable to load shared library
    J> "/home/royle/Rstuff/varna.o"

    J> this function varna.o was compiled with:

    J>  gcc -c varna.f

    J> with no errors or warnings.

You have to add (to the above)

	R SHLIB varna.o -o varna.so

or even do this at once:

	R SHLIB varna.c


and then

	dyn.load("....../varna.so")

----
In addition to  
	help(dyn.load),
	help(SHLIB),
see also in  RHOME/demos/dynload  and look at the Makefile.

Martin Maechler <maechler at stat.math.ethz.ch>	http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum SOL G1;	Sonneggstr.33
ETH (Federal Inst. Technology)	8092 Zurich	SWITZERLAND
phone: x-41-1-632-3408		fax: ...-1086			<><
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