On Fri, 8 Oct 2010, Steve Pederson wrote:
Hi,
I'm trying to write a function in C for implementation with .Call. When
compiling using R CMD SHLIB characters seem to be added to the function name.
Here's the complete C code from the file summariseMCMC.c:
#include<R.h>
#include<Rdefines.h>
#include<Rinternals.h>
void summariseMCMC(SEXP data) {
PROTECT(data=AS_NUMERIC(data));
UNPROTECT(1);
}
Then after compiling (R CMD SHLIB summariseMCMC.c) & loading the .dll
dyn.load("C:/R/R-2.11.1/bin/summariseMCMC.dll")
is.loaded("_Z13summariseMCMCP7SEXPREC")
[1] TRUE
is.loaded("summariseMCMC")
[1] FALSE
Just wondering if anyone had any pointers for getting rid of this, or have I
missed something outrageously obvious?
You have. This was not done by'R CMD SHLIB', but by a C++ compiler --
it is called 'name mangling'. Unfortunately you didn't show us the
output from that command, when the cause would probably have been
'outrageously obvious'.
The fix is to make sure you use a C compiler to compile C code, and
we've almost no idea why that is not being done on your system.
But as a guess, check that the environment variable CC is not set.
Thanks,
Steve
sessionInfo()
R version 2.11.1 (2010-05-31)
i386-pc-mingw32
locale:
[1] LC_COLLATE=English_Australia.1252 LC_CTYPE=English_Australia.1252
[3] LC_MONETARY=English_Australia.1252 LC_NUMERIC=C
[5] LC_TIME=English_Australia.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] limma_3.4.4 Biobase_2.8.0 aroma.affymetrix_1.7.0
[4] aroma.apd_0.1.7 affxparser_1.20.0 R.huge_0.2.0
[7] aroma.core_1.7.0 aroma.light_1.16.0 matrixStats_0.2.1
[10] R.rsp_0.3.6 R.cache_0.3.0 R.filesets_0.8.3
[13] digest_0.4.2 R.utils_1.4.4 R.oo_1.7.3
[16] R.methodsS3_1.2.0
loaded via a namespace (and not attached):
[1] tools_2.11.1
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--
Brian D. Ripley, [email protected]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
