Antonio.
2006/5/26, Duncan Temple Lang <duncan at 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
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
compiled from the GNU sources (to help track down a bug in code
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 at 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 at hawk0:/data5/ost/R/R-2.3.0/tests/Embedding> cd
/autofs/tewa_data5/ost/R/R-2.3.0/lib
ost at 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 at 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
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
ost at hawk0:/autofs/tewa_data5/ost/R/R-2.3.0/lib> arch
x86_64
ost at hawk0:/autofs/tewa_data5/ost/R/R-2.3.0/lib>