dyn.load (PR#9364)

here is the output

 > source("run.R")

gcc-4.0 -arch ppc -I/Library/Frameworks/R.framework/Resources/include  
-I/Library/Frameworks/R.framework/Resources/include/ppc  -I/usr/local/ 
include    -fPIC  -g -O2 -std=gnu99 -c code.c -o code.o
gcc-4.0 -arch ppc -dynamiclib -Wl,-macosx_version_min -Wl,10.3 - 
undefined dynamic_lookup -single_module -multiply_defined suppress -L/ 
usr/local/lib -o foo.so code.o   -L/Library/Frameworks/R.framework/ 
Resources/lib/ppc -lR -dylib_file libRblas.dylib:/Library/Frameworks/ 
R.framework/Resources/lib/ppc/libRblas.dylib
loaded DLL/SO
first attempt
gcc-4.0 -arch ppc -I/Library/Frameworks/R.framework/Resources/include  
-I/Library/Frameworks/R.framework/Resources/include/ppc  -I/usr/local/ 
include    -fPIC  -g -O2 -std=gnu99 -c other.c -o other.o
gcc-4.0 -arch ppc -dynamiclib -Wl,-macosx_version_min -Wl,10.3 - 
undefined dynamic_lookup -single_module -multiply_defined suppress -L/ 
usr/local/lib -o foo.so other.o   -L/Library/Frameworks/R.framework/ 
Resources/lib/ppc -lR -dylib_file libRblas.dylib:/Library/Frameworks/ 
R.framework/Resources/lib/ppc/libRblas.dylib
loaded DLL/SO
first attempt
[1] "Failed"


On 16/nov/06, at 00:07, Duncan Temple Lang wrote:



I was just testing this myself on various machines.
And it behaves on Linux, Windows and also on
my Intel Mac (OS X 10.4.8).

Stefano, is this restriction on OS X still in effect?
(Unfortunately I can't test this on any of my Power PC macs
just at the moment. Just building R-2.4-0 one one of them.)

There is test code available at
  www.omegahat.org/Misc/Rdynunload.tar.gz

The script run.R does the builds and load and unloads
and runs the entire test. Without a programmatic test
it is easy to test the wrong thing.

 D.

stefano iacus wrote:

In OS X you cannot "unload" dynamically linked code. This is a known
"feature" of OS X :(
This is not an R bug.

stefano

On 15/nov/06, at 15:27, tuke at senet.com.au wrote:

Full_Name: Jonathan Tuke
Version: 2.4.0
OS: Mac OS X 10.4.8
Submission from: (NULL) (203.173.46.189)

I am writing C code to implement in R. I am using R CMD SHLIB and  
then
dyn.load("file.so"). The function I then call with .C("function").
Since I
installed the latest R version, I have found that if I alter my C
code and
recompile, then use dyn.load("file.so"), the function in R is not
updated but
remains as the previous code. I have tried dyn.unload, but when I
use dyn.load()
the initially loaded code is used. The only way to load the updated
c code is to
quit R and then reopen.

Thanks,
Jono

--
Duncan Temple Lang                    duncan at wald.ucdavis.edu
Department of Statistics              work:  (530) 752-4782
4210 Mathematical Sciences Building   fax:   (530) 752-7099
One Shields Ave.
University of California at Davis
Davis,
CA 95616,
USA