[Rd] Re: [R] Newbie questions

[Peter Dalgaard BSA]

Zsombor Cseres-Gergely <z.cseres-gergely@ucl.ac.uk> writes:

> There is something with the hurd ld.so, but I do not know, what. But I 
> 
> 1) run 'make test' with --gui=none. It went up till dies with
>  
> > library("eda") # returns invisibly
> Error in dyn.load(x, as.logical(local), as.logical(now)) : 
> 	unable to load shared library "/home/zs/R-1.1.1/library/eda/libs/eda.so":
>   /home/zs/R-1.1.1/library/eda/libs/eda.so: undefined symbol: R_rsort
> Error in library("eda") : .First.lib failed
> Execution halted

OK, so that shows that dynamic loading doesn't work.

> 3) sent a message to the Hurd folks. One reply was this:
> 
> <quote on>
> 
> The correct linker options for this sort of issue are the same as on Linux.
> Perhaps their build scripts behave differently on Linux than on Hurd.  It
> sounds like they expect to link the main executable with --export-dynamic
> (aka -E).  Use nm --dynamic or objdump --dynamic-syms to see what symbols
> are defined in the executable on Linux and on Hurd.
> 
> <quote off>

Aha... Actually watching the link step during make would probably show
that -export-dynamic is not among the options. The codes that inserts
that flag during configure would seem to be (in configure or configure.in)

  *linux*)
    main_ldflags="-export-dynamic"
    ;;

which likely will not trigger on the Hurd... In the longer run we
should fix configure, but on a short term, you can fix this by setting

MAIN_LDFLAGS = -export-dynamic

in Makeconf. (It would seem to be spelled with a single hyphen, for
some oddball reason).
-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
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