Hi all.
The same compiler problem appears on my gcc-4.0.2 shipped with ubuntu
breezy. Well fixed with B.R. indication.

Antonio.

2006/5/26, Duncan Temple Lang <duncan@wald.ucdavis.edu>:
>
>
> In addition to the compiler issues, the test should also be changed.
> It should use R_tryEval() directly rather than Test_tryEval().  The test
> preceeds the existence
> of that exported routine that was motivated by the same
> usage that gave rise to this test.
>
> I'll commit an update when I get a few minutes.
>
>   D.
>
> Prof Brian Ripley wrote:
> > What system is this?
> >
> > It should work under gcc-3.3.4, as the issue is visibility attributes
> and
> > they are not supposed to be supported on that compiler.  (I suspect from
> > the message that this is not a version of gcc released by GNU, a common
> > source of problems.)  I happen to have an i686 FC3 system with a gcc
> 3.3.5
> > compiled from the GNU sources (to help track down a bug in code
> generated
> > by that compiler), and that does work in tests/Embedding.
> >
> > In src/main/context.c you will find
> >
> > context.c:Rboolean attribute_hidden R_ToplevelExec(void (*fun)(void *),
> > void *data)
> >
> > and you need to remove 'attribute_hidden' and recompile.
> >
> > (There is a known problem here with gcc >= 4.0.0, with this fix in the
> > pre-2.3.1 sources.  We know that certain RedHat systems have gcc3's that
> > support visibility, not always completely.)

>
> >
> > On Thu, 25 May 2006, George Ostrouchov wrote:
> >
> >> I am compiling the Embedding examples in the tests directory and get an
> >> undefined reference. I include the make output as well as grep'd output
> >> of nm on libR.so and compiler and arch information. Do I have an
> >> improperly built R shared library or is there a problem with the
> >> Embedding tests or something else I am not seeing?
> >>
> >> Thanks for any help!
> >> George
> >>
> >>
> >> ost@hawk0:/data5/ost/R/R-2.3.0/tests/Embedding> make
> >> ../../bin/R CMD LINK gcc -o Rtest Rtest.o embeddedRCall.o -L`cd ../..
> &&
> >> /bin/pwd`/lib -lR
> >> gcc -o Rtest Rtest.o embeddedRCall.o
> >> -L/autofs/tewa_data5/ost/R/R-2.3.0/lib -lR -Wl,--rpath
> >> -Wl,/data5/ost/R/R-2.3.0/lib
> >> embeddedRCall.o(.text+0x1e): In function `Test_tryEval':
> >> /autofs/tewa_data5/ost/R/R-2.3.0/tests/Embedding/embeddedRCall.c:81:
> >> undefined reference to `R_ToplevelExec'
> >> collect2: ld returned 1 exit status
> >> make: *** [Rtest] Error 1
> >> ost@hawk0:/data5/ost/R/R-2.3.0/tests/Embedding> cd
> >> /autofs/tewa_data5/ost/R/R-2.3.0/lib
> >> ost@hawk0:/autofs/tewa_data5/ost/R/R-2.3.0/lib> nm libR.so | grep R_Top
> >> 000000000042c920 B R_Toplevel
> >> 000000000042cae8 B R_ToplevelContext
> >> 000000000007a7b0 t R_ToplevelExec
> >> ost@hawk0:/autofs/tewa_data5/ost/R/R-2.3.0/lib> gcc --version
> >> gcc (GCC) 3.3.4 (pre 3.3.5 20040809)
> >> Copyright (C) 2003 Free Software Foundation, Inc.
> >> This is free software; see the source for copying conditions.  There is
> NO
> >> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
> PURPOSE.
> >>
> >> ost@hawk0:/autofs/tewa_data5/ost/R/R-2.3.0/lib> arch
> >> x86_64
> >> ost@hawk0:/autofs/tewa_data5/ost/R/R-2.3.0/lib>
> >>
> >>
> >>
> >
>
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>

Antonio, Fabio Di Narzo.

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